From 463dc947b4f9bc4137c9919ee72b896403926474 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Thu, 12 Jun 2014 13:48:47 -0700 Subject: Get rid of nptl/sysdeps/pthread/ subdirectory --- ChangeLog | 78 ++ include/list.h | 117 +++ nptl/createthread.c | 259 ++++++ nptl/pt-longjmp.c | 28 + nptl/sysdeps/pthread/Makefile | 41 - nptl/sysdeps/pthread/Subdirs | 2 - nptl/sysdeps/pthread/aio_misc.h | 74 -- nptl/sysdeps/pthread/allocalim.h | 29 - nptl/sysdeps/pthread/bits/libc-lock.h | 187 ----- nptl/sysdeps/pthread/bits/libc-lockP.h | 424 ---------- nptl/sysdeps/pthread/bits/sigthread.h | 43 - nptl/sysdeps/pthread/bits/stdio-lock.h | 110 --- nptl/sysdeps/pthread/configure | 89 -- nptl/sysdeps/pthread/configure.ac | 49 -- nptl/sysdeps/pthread/createthread.c | 259 ------ nptl/sysdeps/pthread/flockfile.c | 32 - nptl/sysdeps/pthread/ftrylockfile.c | 32 - nptl/sysdeps/pthread/funlockfile.c | 32 - nptl/sysdeps/pthread/gai_misc.h | 121 --- nptl/sysdeps/pthread/librt-cancellation.c | 24 - nptl/sysdeps/pthread/list.h | 117 --- nptl/sysdeps/pthread/malloc-machine.h | 73 -- nptl/sysdeps/pthread/posix-timer.h | 196 ----- nptl/sysdeps/pthread/pt-longjmp.c | 28 - nptl/sysdeps/pthread/pthread-functions.h | 117 --- nptl/sysdeps/pthread/pthread.h | 1163 --------------------------- nptl/sysdeps/pthread/pthread_sigmask.c | 57 -- nptl/sysdeps/pthread/setxid.h | 62 -- nptl/sysdeps/pthread/sigfillset.c | 20 - nptl/sysdeps/pthread/tcb-offsets.h | 1 - nptl/sysdeps/pthread/timer_create.c | 169 ---- nptl/sysdeps/pthread/timer_delete.c | 69 -- nptl/sysdeps/pthread/timer_getoverr.c | 44 - nptl/sysdeps/pthread/timer_gettime.c | 76 -- nptl/sysdeps/pthread/timer_routines.c | 577 ------------- nptl/sysdeps/pthread/timer_settime.c | 136 ---- nptl/sysdeps/pthread/tst-mqueue8x.c | 1 - nptl/sysdeps/pthread/tst-timer.c | 159 ---- nptl/sysdeps/pthread/unwind-forcedunwind.c | 151 ---- nptl/sysdeps/unix/sysv/linux/Implies | 1 - nptl/sysdeps/unix/sysv/linux/createthread.c | 2 +- sysdeps/nptl/Implies | 1 + sysdeps/nptl/Makefile | 35 + sysdeps/nptl/Subdirs | 2 + sysdeps/nptl/aio_misc.h | 74 ++ sysdeps/nptl/bits/libc-lock.h | 187 +++++ sysdeps/nptl/bits/libc-lockP.h | 424 ++++++++++ sysdeps/nptl/bits/stdio-lock.h | 110 +++ sysdeps/nptl/configure | 89 ++ sysdeps/nptl/configure.ac | 49 ++ sysdeps/nptl/gai_misc.h | 121 +++ sysdeps/nptl/librt-cancellation.c | 24 + sysdeps/nptl/malloc-machine.h | 73 ++ sysdeps/nptl/pthread-functions.h | 117 +++ sysdeps/nptl/pthread.h | 1163 +++++++++++++++++++++++++++ sysdeps/nptl/setxid.h | 62 ++ sysdeps/nptl/sigfillset.c | 20 + sysdeps/nptl/tcb-offsets.h | 1 + sysdeps/nptl/tst-mqueue8x.c | 1 + sysdeps/nptl/unwind-forcedunwind.c | 151 ++++ sysdeps/pthread/Makefile | 23 + sysdeps/pthread/allocalim.h | 29 + sysdeps/pthread/bits/sigthread.h | 43 + sysdeps/pthread/flockfile.c | 32 + sysdeps/pthread/ftrylockfile.c | 32 + sysdeps/pthread/funlockfile.c | 32 + sysdeps/pthread/posix-timer.h | 196 +++++ sysdeps/pthread/timer_create.c | 169 ++++ sysdeps/pthread/timer_delete.c | 69 ++ sysdeps/pthread/timer_getoverr.c | 44 + sysdeps/pthread/timer_gettime.c | 76 ++ sysdeps/pthread/timer_routines.c | 577 +++++++++++++ sysdeps/pthread/timer_settime.c | 136 ++++ sysdeps/pthread/tst-timer.c | 159 ++++ sysdeps/unix/sysv/linux/Implies | 3 + sysdeps/unix/sysv/linux/pthread_sigmask.c | 57 ++ 76 files changed, 4864 insertions(+), 4766 deletions(-) create mode 100644 include/list.h create mode 100644 nptl/createthread.c create mode 100644 nptl/pt-longjmp.c delete mode 100644 nptl/sysdeps/pthread/Makefile delete mode 100644 nptl/sysdeps/pthread/Subdirs delete mode 100644 nptl/sysdeps/pthread/aio_misc.h delete mode 100644 nptl/sysdeps/pthread/allocalim.h delete mode 100644 nptl/sysdeps/pthread/bits/libc-lock.h delete mode 100644 nptl/sysdeps/pthread/bits/libc-lockP.h delete mode 100644 nptl/sysdeps/pthread/bits/sigthread.h delete mode 100644 nptl/sysdeps/pthread/bits/stdio-lock.h delete mode 100644 nptl/sysdeps/pthread/configure delete mode 100644 nptl/sysdeps/pthread/configure.ac delete mode 100644 nptl/sysdeps/pthread/createthread.c delete mode 100644 nptl/sysdeps/pthread/flockfile.c delete mode 100644 nptl/sysdeps/pthread/ftrylockfile.c delete mode 100644 nptl/sysdeps/pthread/funlockfile.c delete mode 100644 nptl/sysdeps/pthread/gai_misc.h delete mode 100644 nptl/sysdeps/pthread/librt-cancellation.c delete mode 100644 nptl/sysdeps/pthread/list.h delete mode 100644 nptl/sysdeps/pthread/malloc-machine.h delete mode 100644 nptl/sysdeps/pthread/posix-timer.h delete mode 100644 nptl/sysdeps/pthread/pt-longjmp.c delete mode 100644 nptl/sysdeps/pthread/pthread-functions.h delete mode 100644 nptl/sysdeps/pthread/pthread.h delete mode 100644 nptl/sysdeps/pthread/pthread_sigmask.c delete mode 100644 nptl/sysdeps/pthread/setxid.h delete mode 100644 nptl/sysdeps/pthread/sigfillset.c delete mode 100644 nptl/sysdeps/pthread/tcb-offsets.h delete mode 100644 nptl/sysdeps/pthread/timer_create.c delete mode 100644 nptl/sysdeps/pthread/timer_delete.c delete mode 100644 nptl/sysdeps/pthread/timer_getoverr.c delete mode 100644 nptl/sysdeps/pthread/timer_gettime.c delete mode 100644 nptl/sysdeps/pthread/timer_routines.c delete mode 100644 nptl/sysdeps/pthread/timer_settime.c delete mode 100644 nptl/sysdeps/pthread/tst-mqueue8x.c delete mode 100644 nptl/sysdeps/pthread/tst-timer.c delete mode 100644 nptl/sysdeps/pthread/unwind-forcedunwind.c delete mode 100644 nptl/sysdeps/unix/sysv/linux/Implies create mode 100644 sysdeps/nptl/Implies create mode 100644 sysdeps/nptl/Makefile create mode 100644 sysdeps/nptl/Subdirs create mode 100644 sysdeps/nptl/aio_misc.h create mode 100644 sysdeps/nptl/bits/libc-lock.h create mode 100644 sysdeps/nptl/bits/libc-lockP.h create mode 100644 sysdeps/nptl/bits/stdio-lock.h create mode 100644 sysdeps/nptl/configure create mode 100644 sysdeps/nptl/configure.ac create mode 100644 sysdeps/nptl/gai_misc.h create mode 100644 sysdeps/nptl/librt-cancellation.c create mode 100644 sysdeps/nptl/malloc-machine.h create mode 100644 sysdeps/nptl/pthread-functions.h create mode 100644 sysdeps/nptl/pthread.h create mode 100644 sysdeps/nptl/setxid.h create mode 100644 sysdeps/nptl/sigfillset.c create mode 100644 sysdeps/nptl/tcb-offsets.h create mode 100644 sysdeps/nptl/tst-mqueue8x.c create mode 100644 sysdeps/nptl/unwind-forcedunwind.c create mode 100644 sysdeps/pthread/Makefile create mode 100644 sysdeps/pthread/allocalim.h create mode 100644 sysdeps/pthread/bits/sigthread.h create mode 100644 sysdeps/pthread/flockfile.c create mode 100644 sysdeps/pthread/ftrylockfile.c create mode 100644 sysdeps/pthread/funlockfile.c create mode 100644 sysdeps/pthread/posix-timer.h create mode 100644 sysdeps/pthread/timer_create.c create mode 100644 sysdeps/pthread/timer_delete.c create mode 100644 sysdeps/pthread/timer_getoverr.c create mode 100644 sysdeps/pthread/timer_gettime.c create mode 100644 sysdeps/pthread/timer_routines.c create mode 100644 sysdeps/pthread/timer_settime.c create mode 100644 sysdeps/pthread/tst-timer.c create mode 100644 sysdeps/unix/sysv/linux/pthread_sigmask.c diff --git a/ChangeLog b/ChangeLog index 0f66198d68..cff531567b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,83 @@ 2014-06-12 Roland McGrath + * sysdeps/nptl/Makefile: Move tst-timer bits to ... + * sysdeps/pthread/Makefile: ... here, new file. + + * nptl/sysdeps/unix/sysv/linux/Implies: Moved ... + * sysdeps/nptl/Implies: ... here. + * sysdeps/unix/sysv/linux/Implies: Add nptl. + * nptl/sysdeps/pthread/list.h: Moved ... + * include/list.h: ... here. + * nptl/sysdeps/pthread/createthread.c: Moved ... + * nptl/createthread.c: ... here. + * nptl/sysdeps/unix/sysv/linux/createthread.c: Update #include. + * nptl/sysdeps/pthread/pt-longjmp.c: Moved ... + * nptl/pt-longjmp.c: ... here. + * nptl/sysdeps/pthread/Makefile: Moved ... + * sysdeps/nptl/Makefile: ... here. + * nptl/sysdeps/pthread/Subdirs: Moved ... + * sysdeps/nptl/Subdirs: ... here. + * nptl/sysdeps/pthread/aio_misc.h: Moved ... + * sysdeps/nptl/aio_misc.h: ... here. + * nptl/sysdeps/pthread/bits/libc-lock.h: Moved ... + * sysdeps/nptl/bits/libc-lock.h: ... here. + * nptl/sysdeps/pthread/bits/libc-lockP.h: Moved ... + * sysdeps/nptl/bits/libc-lockP.h: ... here. + * nptl/sysdeps/pthread/bits/stdio-lock.h: Moved ... + * sysdeps/nptl/bits/stdio-lock.h: ... here. + * nptl/sysdeps/pthread/configure: Moved ... + * sysdeps/nptl/configure: ... here. + * nptl/sysdeps/pthread/configure.ac: Moved ... + * sysdeps/nptl/configure.ac: ... here. + * nptl/sysdeps/pthread/gai_misc.h: Moved ... + * sysdeps/nptl/gai_misc.h: ... here. + * nptl/sysdeps/pthread/librt-cancellation.c: Moved ... + * sysdeps/nptl/librt-cancellation.c: ... here. + * nptl/sysdeps/pthread/malloc-machine.h: Moved ... + * sysdeps/nptl/malloc-machine.h: ... here. + * nptl/sysdeps/pthread/pthread-functions.h: Moved ... + * sysdeps/nptl/pthread-functions.h: ... here. + * nptl/sysdeps/pthread/pthread.h: Moved ... + * sysdeps/nptl/pthread.h: ... here. + * nptl/sysdeps/pthread/setxid.h: Moved ... + * sysdeps/nptl/setxid.h: ... here. + * nptl/sysdeps/pthread/sigfillset.c: Moved ... + * sysdeps/nptl/sigfillset.c: ... here. + * nptl/sysdeps/pthread/tcb-offsets.h: Moved ... + * sysdeps/nptl/tcb-offsets.h: ... here. + * nptl/sysdeps/pthread/tst-mqueue8x.c: Moved ... + * sysdeps/nptl/tst-mqueue8x.c: ... here. + * nptl/sysdeps/pthread/unwind-forcedunwind.c: Moved ... + * sysdeps/nptl/unwind-forcedunwind.c: ... here. + * nptl/sysdeps/pthread/allocalim.h: Moved ... + * sysdeps/pthread/allocalim.h: ... here. + * nptl/sysdeps/pthread/bits/sigthread.h: Moved ... + * sysdeps/pthread/bits/sigthread.h: ... here. + * nptl/sysdeps/pthread/flockfile.c: Moved ... + * sysdeps/pthread/flockfile.c: ... here. + * nptl/sysdeps/pthread/ftrylockfile.c: Moved ... + * sysdeps/pthread/ftrylockfile.c: ... here. + * nptl/sysdeps/pthread/funlockfile.c: Moved ... + * sysdeps/pthread/funlockfile.c: ... here. + * nptl/sysdeps/pthread/posix-timer.h: Moved ... + * sysdeps/pthread/posix-timer.h: ... here. + * nptl/sysdeps/pthread/timer_create.c: Moved ... + * sysdeps/pthread/timer_create.c: ... here. + * nptl/sysdeps/pthread/timer_delete.c: Moved ... + * sysdeps/pthread/timer_delete.c: ... here. + * nptl/sysdeps/pthread/timer_getoverr.c: Moved ... + * sysdeps/pthread/timer_getoverr.c: ... here. + * nptl/sysdeps/pthread/timer_gettime.c: Moved ... + * sysdeps/pthread/timer_gettime.c: ... here. + * nptl/sysdeps/pthread/timer_routines.c: Moved ... + * sysdeps/pthread/timer_routines.c: ... here. + * nptl/sysdeps/pthread/timer_settime.c: Moved ... + * sysdeps/pthread/timer_settime.c: ... here. + * nptl/sysdeps/pthread/tst-timer.c: Moved ... + * sysdeps/pthread/tst-timer.c: ... here. + * nptl/sysdeps/pthread/pthread_sigmask.c: Moved ... + * sysdeps/unix/sysv/linux/pthread_sigmask.c: ... here. + * sysdeps/unix/sysv/linux/sigprocmask.c: Include . * nptl/sysdeps/pthread/sigprocmask.c: File removed. diff --git a/include/list.h b/include/list.h new file mode 100644 index 0000000000..749c727175 --- /dev/null +++ b/include/list.h @@ -0,0 +1,117 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef _LIST_H + +#ifndef __need_list_t +# define _LIST_H 1 +#endif + +/* The definitions of this file are adopted from those which can be + found in the Linux kernel headers to enable people familiar with + the latter find their way in these sources as well. */ + + +#if defined __need_list_t || defined _LIST_H +# ifndef __list_t_defined +# define __list_t_defined +/* Basic type for the double-link list. */ +typedef struct list_head +{ + struct list_head *next; + struct list_head *prev; +} list_t; +# endif +# undef __need_list_t +#endif + +#ifdef _LIST_H + +# include + +/* Define a variable with the head and tail of the list. */ +# define LIST_HEAD(name) \ + list_t name = { &(name), &(name) } + +/* Initialize a new list head. */ +# define INIT_LIST_HEAD(ptr) \ + (ptr)->next = (ptr)->prev = (ptr) + + +/* Add new element at the head of the list. */ +static inline void +list_add (list_t *newp, list_t *head) +{ + newp->next = head->next; + newp->prev = head; + head->next->prev = newp; + atomic_write_barrier (); + head->next = newp; +} + + +/* Remove element from list. */ +static inline void +list_del (list_t *elem) +{ + elem->next->prev = elem->prev; + elem->prev->next = elem->next; +} + + +/* Join two lists. */ +static inline void +list_splice (list_t *add, list_t *head) +{ + /* Do nothing if the list which gets added is empty. */ + if (add != add->next) + { + add->next->prev = head; + add->prev->next = head->next; + head->next->prev = add->prev; + head->next = add->next; + } +} + + +/* Get typed element from list at a given position. */ +# define list_entry(ptr, type, member) \ + ((type *) ((char *) (ptr) - (unsigned long) (&((type *) 0)->member))) + + + +/* Iterate forward over the elements of the list. */ +# define list_for_each(pos, head) \ + for (pos = (head)->next; pos != (head); pos = pos->next) + + +/* Iterate forward over the elements of the list. */ +# define list_for_each_prev(pos, head) \ + for (pos = (head)->prev; pos != (head); pos = pos->prev) + + +/* Iterate backwards over the elements list. The list elements can be + removed from the list while doing this. */ +# define list_for_each_prev_safe(pos, p, head) \ + for (pos = (head)->prev, p = pos->prev; \ + pos != (head); \ + pos = p, p = pos->prev) + +#endif /* _LIST_H */ + +#endif /* list.h */ diff --git a/nptl/createthread.c b/nptl/createthread.c new file mode 100644 index 0000000000..28c1ea67d3 --- /dev/null +++ b/nptl/createthread.c @@ -0,0 +1,259 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "kernel-features.h" + + +#define CLONE_SIGNAL (CLONE_SIGHAND | CLONE_THREAD) + +/* The header should define the macro TLS_DEFINE_INIT_TP such that: + TLS_DEFINE_INIT_TP (VAR, PD); + Declares and initializes a variable VAR with the value that should + be passed to the OS thread creation function (e.g. clone) to initialize + its TLS state for the 'struct pthread *' PD. */ +#ifndef TLS_DEFINE_INIT_TP +/* For a transitional period while all the implementations are + getting updated, we define it using the old TLS_VALUE macro. */ +# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = TLS_VALUE +# ifndef TLS_VALUE +# define TLS_VALUE pd +# endif +#endif + +#ifndef ARCH_CLONE +# define ARCH_CLONE __clone +#endif + + +#ifndef TLS_MULTIPLE_THREADS_IN_TCB +/* Pointer to the corresponding variable in libc. */ +int *__libc_multiple_threads_ptr attribute_hidden; +#endif + + +static int +do_clone (struct pthread *pd, const struct pthread_attr *attr, + int clone_flags, int (*fct) (void *), STACK_VARIABLES_PARMS, + int stopped) +{ + TLS_DEFINE_INIT_TP (tp, pd); + + if (__glibc_unlikely (stopped != 0)) + /* We make sure the thread does not run far by forcing it to get a + lock. We lock it here too so that the new thread cannot continue + until we tell it to. */ + lll_lock (pd->lock, LLL_PRIVATE); + + /* One more thread. We cannot have the thread do this itself, since it + might exist but not have been scheduled yet by the time we've returned + and need to check the value to behave correctly. We must do it before + creating the thread, in case it does get scheduled first and then + might mistakenly think it was the only thread. In the failure case, + we momentarily store a false value; this doesn't matter because there + is no kosher thing a signal handler interrupting us right here can do + that cares whether the thread count is correct. */ + atomic_increment (&__nptl_nthreads); + + int rc = ARCH_CLONE (fct, STACK_VARIABLES_ARGS, clone_flags, + pd, &pd->tid, tp, &pd->tid); + + if (__glibc_unlikely (rc == -1)) + { + atomic_decrement (&__nptl_nthreads); /* Oops, we lied for a second. */ + + /* Perhaps a thread wants to change the IDs and if waiting + for this stillborn thread. */ + if (__builtin_expect (atomic_exchange_acq (&pd->setxid_futex, 0) + == -2, 0)) + lll_futex_wake (&pd->setxid_futex, 1, LLL_PRIVATE); + + /* Free the resources. */ + __deallocate_stack (pd); + + /* We have to translate error codes. */ + return errno == ENOMEM ? EAGAIN : errno; + } + + /* Now we have the possibility to set scheduling parameters etc. */ + if (__glibc_unlikely (stopped != 0)) + { + INTERNAL_SYSCALL_DECL (err); + int res = 0; + + /* Set the affinity mask if necessary. */ + if (attr->cpuset != NULL) + { + res = INTERNAL_SYSCALL (sched_setaffinity, err, 3, pd->tid, + attr->cpusetsize, attr->cpuset); + + if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (res, err))) + { + /* The operation failed. We have to kill the thread. First + send it the cancellation signal. */ + INTERNAL_SYSCALL_DECL (err2); + err_out: + (void) INTERNAL_SYSCALL (tgkill, err2, 3, + THREAD_GETMEM (THREAD_SELF, pid), + pd->tid, SIGCANCEL); + + /* We do not free the stack here because the canceled thread + itself will do this. */ + + return (INTERNAL_SYSCALL_ERROR_P (res, err) + ? INTERNAL_SYSCALL_ERRNO (res, err) + : 0); + } + } + + /* Set the scheduling parameters. */ + if ((attr->flags & ATTR_FLAG_NOTINHERITSCHED) != 0) + { + res = INTERNAL_SYSCALL (sched_setscheduler, err, 3, pd->tid, + pd->schedpolicy, &pd->schedparam); + + if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (res, err))) + goto err_out; + } + } + + /* We now have for sure more than one thread. The main thread might + not yet have the flag set. No need to set the global variable + again if this is what we use. */ + THREAD_SETMEM (THREAD_SELF, header.multiple_threads, 1); + + return 0; +} + + +static int +create_thread (struct pthread *pd, const struct pthread_attr *attr, + STACK_VARIABLES_PARMS) +{ +#if TLS_TCB_AT_TP + assert (pd->header.tcb != NULL); +#endif + + /* We rely heavily on various flags the CLONE function understands: + + CLONE_VM, CLONE_FS, CLONE_FILES + These flags select semantics with shared address space and + file descriptors according to what POSIX requires. + + CLONE_SIGNAL + This flag selects the POSIX signal semantics. + + CLONE_SETTLS + The sixth parameter to CLONE determines the TLS area for the + new thread. + + CLONE_PARENT_SETTID + The kernels writes the thread ID of the newly created thread + into the location pointed to by the fifth parameters to CLONE. + + Note that it would be semantically equivalent to use + CLONE_CHILD_SETTID but it is be more expensive in the kernel. + + CLONE_CHILD_CLEARTID + The kernels clears the thread ID of a thread that has called + sys_exit() in the location pointed to by the seventh parameter + to CLONE. + + The termination signal is chosen to be zero which means no signal + is sent. */ + int clone_flags = (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGNAL + | CLONE_SETTLS | CLONE_PARENT_SETTID + | CLONE_CHILD_CLEARTID | CLONE_SYSVSEM + | 0); + + if (__glibc_unlikely (THREAD_GETMEM (THREAD_SELF, report_events))) + { + /* The parent thread is supposed to report events. Check whether + the TD_CREATE event is needed, too. */ + const int _idx = __td_eventword (TD_CREATE); + const uint32_t _mask = __td_eventmask (TD_CREATE); + + if ((_mask & (__nptl_threads_events.event_bits[_idx] + | pd->eventbuf.eventmask.event_bits[_idx])) != 0) + { + /* We always must have the thread start stopped. */ + pd->stopped_start = true; + + /* Create the thread. We always create the thread stopped + so that it does not get far before we tell the debugger. */ + int res = do_clone (pd, attr, clone_flags, start_thread, + STACK_VARIABLES_ARGS, 1); + if (res == 0) + { + /* Now fill in the information about the new thread in + the newly created thread's data structure. We cannot let + the new thread do this since we don't know whether it was + already scheduled when we send the event. */ + pd->eventbuf.eventnum = TD_CREATE; + pd->eventbuf.eventdata = pd; + + /* Enqueue the descriptor. */ + do + pd->nextevent = __nptl_last_event; + while (atomic_compare_and_exchange_bool_acq (&__nptl_last_event, + pd, pd->nextevent) + != 0); + + /* Now call the function which signals the event. */ + __nptl_create_event (); + + /* And finally restart the new thread. */ + lll_unlock (pd->lock, LLL_PRIVATE); + } + + return res; + } + } + +#ifdef NEED_DL_SYSINFO + assert (THREAD_SELF_SYSINFO == THREAD_SYSINFO (pd)); +#endif + + /* Determine whether the newly created threads has to be started + stopped since we have to set the scheduling parameters or set the + affinity. */ + bool stopped = false; + if (attr != NULL && (attr->cpuset != NULL + || (attr->flags & ATTR_FLAG_NOTINHERITSCHED) != 0)) + stopped = true; + pd->stopped_start = stopped; + pd->parent_cancelhandling = THREAD_GETMEM (THREAD_SELF, cancelhandling); + + /* Actually create the thread. */ + int res = do_clone (pd, attr, clone_flags, start_thread, + STACK_VARIABLES_ARGS, stopped); + + if (res == 0 && stopped) + /* And finally restart the new thread. */ + lll_unlock (pd->lock, LLL_PRIVATE); + + return res; +} diff --git a/nptl/pt-longjmp.c b/nptl/pt-longjmp.c new file mode 100644 index 0000000000..09b3c7eb86 --- /dev/null +++ b/nptl/pt-longjmp.c @@ -0,0 +1,28 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include "pthreadP.h" + +void +longjmp (jmp_buf env, int val) +{ + __libc_longjmp (env, val); +} +weak_alias (longjmp, siglongjmp) diff --git a/nptl/sysdeps/pthread/Makefile b/nptl/sysdeps/pthread/Makefile deleted file mode 100644 index 60d525e9d7..0000000000 --- a/nptl/sysdeps/pthread/Makefile +++ /dev/null @@ -1,41 +0,0 @@ -# Copyright (C) 2002-2014 Free Software Foundation, Inc. -# This file is part of the GNU C Library. -# Contributed by Ulrich Drepper , 2002. - -# The GNU C Library is free software; you can redistribute it and/or -# modify it under the terms of the GNU Lesser General Public -# License as published by the Free Software Foundation; either -# version 2.1 of the License, or (at your option) any later version. - -# The GNU C Library is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# Lesser General Public License for more details. - -# You should have received a copy of the GNU Lesser General Public -# License along with the GNU C Library; if not, see -# . - -ifeq ($(subdir),nptl) -libpthread-sysdep_routines += errno-loc -endif - -ifeq ($(subdir),rt) -librt-sysdep_routines += timer_routines librt-cancellation -CFLAGS-librt-cancellation.c += -fexceptions -fasynchronous-unwind-tables - -ifeq (yes,$(build-shared)) -$(objpfx)tst-timer: $(objpfx)librt.so $(shared-thread-library) -else -$(objpfx)tst-timer: $(objpfx)librt.a $(static-thread-library) -endif - -ifeq ($(have-forced-unwind),yes) -tests += tst-mqueue8x -CFLAGS-tst-mqueue8x.c += -fexceptions -endif -endif - -ifeq ($(subdir),posix) -CFLAGS-confstr.c += -DLIBPTHREAD_VERSION='"NPTL $(version)"' -endif diff --git a/nptl/sysdeps/pthread/Subdirs b/nptl/sysdeps/pthread/Subdirs deleted file mode 100644 index 36266c1e69..0000000000 --- a/nptl/sysdeps/pthread/Subdirs +++ /dev/null @@ -1,2 +0,0 @@ -nptl -nptl_db diff --git a/nptl/sysdeps/pthread/aio_misc.h b/nptl/sysdeps/pthread/aio_misc.h deleted file mode 100644 index ac3488c57e..0000000000 --- a/nptl/sysdeps/pthread/aio_misc.h +++ /dev/null @@ -1,74 +0,0 @@ -/* Copyright (C) 2006-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -/* We define a special synchronization primitive for AIO. POSIX - conditional variables would be ideal but the pthread_cond_*wait - operations do not return on EINTR. This is a requirement for - correct aio_suspend and lio_listio implementations. */ - -#include -#include -#include - -#define DONT_NEED_AIO_MISC_COND 1 - -#define AIO_MISC_NOTIFY(waitlist) \ - do { \ - if (*waitlist->counterp > 0 && --*waitlist->counterp == 0) \ - lll_futex_wake (waitlist->counterp, 1, LLL_PRIVATE); \ - } while (0) - -#define AIO_MISC_WAIT(result, futex, timeout, cancel) \ - do { \ - volatile int *futexaddr = &futex; \ - int oldval = futex; \ - \ - if (oldval != 0) \ - { \ - pthread_mutex_unlock (&__aio_requests_mutex); \ - \ - int oldtype; \ - if (cancel) \ - oldtype = LIBC_CANCEL_ASYNC (); \ - \ - int status; \ - do \ - { \ - status = lll_futex_timed_wait (futexaddr, oldval, timeout, \ - LLL_PRIVATE); \ - if (status != -EWOULDBLOCK) \ - break; \ - \ - oldval = *futexaddr; \ - } \ - while (oldval != 0); \ - \ - if (cancel) \ - LIBC_CANCEL_RESET (oldtype); \ - \ - if (status == -EINTR) \ - result = EINTR; \ - else if (status == -ETIMEDOUT) \ - result = EAGAIN; \ - else \ - assert (status == 0 || status == -EWOULDBLOCK); \ - \ - pthread_mutex_lock (&__aio_requests_mutex); \ - } \ - } while (0) - -#include_next diff --git a/nptl/sysdeps/pthread/allocalim.h b/nptl/sysdeps/pthread/allocalim.h deleted file mode 100644 index 407d4007e7..0000000000 --- a/nptl/sysdeps/pthread/allocalim.h +++ /dev/null @@ -1,29 +0,0 @@ -/* Determine whether block of given size can be allocated on the stack or not. - Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include - - -extern __always_inline -int -__libc_use_alloca (size_t size) -{ - return (__builtin_expect (size <= PTHREAD_STACK_MIN / 4, 1) - || __builtin_expect (__libc_alloca_cutoff (size), 1)); -} diff --git a/nptl/sysdeps/pthread/bits/libc-lock.h b/nptl/sysdeps/pthread/bits/libc-lock.h deleted file mode 100644 index 532cf2c701..0000000000 --- a/nptl/sysdeps/pthread/bits/libc-lock.h +++ /dev/null @@ -1,187 +0,0 @@ -/* libc-internal interface for mutex locks. NPTL version. - Copyright (C) 1996-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#ifndef _BITS_LIBC_LOCK_H -#define _BITS_LIBC_LOCK_H 1 - -#include -#define __need_NULL -#include - - -/* Mutex type. */ -#if defined _LIBC || defined _IO_MTSAFE_IO -# if (defined NOT_IN_libc && !defined IS_IN_libpthread) || !defined _LIBC -typedef struct { pthread_mutex_t mutex; } __libc_lock_recursive_t; -# else -typedef struct { int lock; int cnt; void *owner; } __libc_lock_recursive_t; -# endif -#else -typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t; -#endif - -/* Define a lock variable NAME with storage class CLASS. The lock must be - initialized with __libc_lock_init before it can be used (or define it - with __libc_lock_define_initialized, below). Use `extern' for CLASS to - declare a lock defined in another module. In public structure - definitions you must use a pointer to the lock structure (i.e., NAME - begins with a `*'), because its storage size will not be known outside - of libc. */ -#define __libc_lock_define_recursive(CLASS,NAME) \ - CLASS __libc_lock_recursive_t NAME; - -/* Define an initialized recursive lock variable NAME with storage - class CLASS. */ -#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) -# define __libc_lock_define_initialized_recursive(CLASS, NAME) \ - CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER; -# define _LIBC_LOCK_RECURSIVE_INITIALIZER \ - { LLL_LOCK_INITIALIZER, 0, NULL } -#else -# define __libc_lock_define_initialized_recursive(CLASS,NAME) \ - CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER; -# define _LIBC_LOCK_RECURSIVE_INITIALIZER \ - {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP} -#endif - -/* Initialize a recursive mutex. */ -#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) -# define __libc_lock_init_recursive(NAME) \ - ((NAME) = (__libc_lock_recursive_t) _LIBC_LOCK_RECURSIVE_INITIALIZER, 0) -#else -# define __libc_lock_init_recursive(NAME) \ - do { \ - if (__pthread_mutex_init != NULL) \ - { \ - pthread_mutexattr_t __attr; \ - __pthread_mutexattr_init (&__attr); \ - __pthread_mutexattr_settype (&__attr, PTHREAD_MUTEX_RECURSIVE_NP); \ - __pthread_mutex_init (&(NAME).mutex, &__attr); \ - __pthread_mutexattr_destroy (&__attr); \ - } \ - } while (0) -#endif - -/* Finalize recursive named lock. */ -#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) -# define __libc_lock_fini_recursive(NAME) ((void) 0) -#else -# define __libc_lock_fini_recursive(NAME) \ - __libc_maybe_call (__pthread_mutex_destroy, (&(NAME).mutex), 0) -#endif - -/* Lock the recursive named lock variable. */ -#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) -# define __libc_lock_lock_recursive(NAME) \ - do { \ - void *self = THREAD_SELF; \ - if ((NAME).owner != self) \ - { \ - lll_lock ((NAME).lock, LLL_PRIVATE); \ - (NAME).owner = self; \ - } \ - ++(NAME).cnt; \ - } while (0) -#else -# define __libc_lock_lock_recursive(NAME) \ - __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0) -#endif - -/* Try to lock the recursive named lock variable. */ -#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) -# define __libc_lock_trylock_recursive(NAME) \ - ({ \ - int result = 0; \ - void *self = THREAD_SELF; \ - if ((NAME).owner != self) \ - { \ - if (lll_trylock ((NAME).lock) == 0) \ - { \ - (NAME).owner = self; \ - (NAME).cnt = 1; \ - } \ - else \ - result = EBUSY; \ - } \ - else \ - ++(NAME).cnt; \ - result; \ - }) -#else -# define __libc_lock_trylock_recursive(NAME) \ - __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0) -#endif - -/* Unlock the recursive named lock variable. */ -#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) -/* We do no error checking here. */ -# define __libc_lock_unlock_recursive(NAME) \ - do { \ - if (--(NAME).cnt == 0) \ - { \ - (NAME).owner = NULL; \ - lll_unlock ((NAME).lock, LLL_PRIVATE); \ - } \ - } while (0) -#else -# define __libc_lock_unlock_recursive(NAME) \ - __libc_maybe_call (__pthread_mutex_unlock, (&(NAME).mutex), 0) -#endif - -/* Note that for I/O cleanup handling we are using the old-style - cancel handling. It does not have to be integrated with C++ since - no C++ code is called in the middle. The old-style handling is - faster and the support is not going away. */ -extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer, - void (*routine) (void *), void *arg); -extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer, - int execute); - -/* Start critical region with cleanup. */ -#define __libc_cleanup_region_start(DOIT, FCT, ARG) \ - { struct _pthread_cleanup_buffer _buffer; \ - int _avail; \ - if (DOIT) { \ - _avail = PTFAVAIL (_pthread_cleanup_push_defer); \ - if (_avail) { \ - __libc_ptf_call_always (_pthread_cleanup_push_defer, (&_buffer, FCT, \ - ARG)); \ - } else { \ - _buffer.__routine = (FCT); \ - _buffer.__arg = (ARG); \ - } \ - } else { \ - _avail = 0; \ - } - -/* End critical region with cleanup. */ -#define __libc_cleanup_region_end(DOIT) \ - if (_avail) { \ - __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\ - } else if (DOIT) \ - _buffer.__routine (_buffer.__arg); \ - } - - -/* Hide the definitions which are only supposed to be used inside libc in - a separate file. This file is not present in the installation! */ -#ifdef _LIBC -# include "libc-lockP.h" -#endif - -#endif /* bits/libc-lock.h */ diff --git a/nptl/sysdeps/pthread/bits/libc-lockP.h b/nptl/sysdeps/pthread/bits/libc-lockP.h deleted file mode 100644 index ec202713d6..0000000000 --- a/nptl/sysdeps/pthread/bits/libc-lockP.h +++ /dev/null @@ -1,424 +0,0 @@ -/* Private libc-internal interface for mutex locks. NPTL version. - Copyright (C) 1996-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#ifndef _BITS_LIBC_LOCKP_H -#define _BITS_LIBC_LOCKP_H 1 - -#include -#define __need_NULL -#include - - -/* Fortunately Linux now has a mean to do locking which is realtime - safe without the aid of the thread library. We also need no fancy - options like error checking mutexes etc. We only need simple - locks, maybe recursive. This can be easily and cheaply implemented - using futexes. We will use them everywhere except in ld.so since - ld.so might be used on old kernels with a different libc.so. */ -#include -#include -#include - -/* Mutex type. */ -#if defined NOT_IN_libc && !defined IS_IN_libpthread -typedef pthread_mutex_t __libc_lock_t; -#else -typedef int __libc_lock_t; -#endif -typedef struct { pthread_mutex_t mutex; } __rtld_lock_recursive_t; -typedef pthread_rwlock_t __libc_rwlock_t; - -/* Type for key to thread-specific data. */ -typedef pthread_key_t __libc_key_t; - -/* Define a lock variable NAME with storage class CLASS. The lock must be - initialized with __libc_lock_init before it can be used (or define it - with __libc_lock_define_initialized, below). Use `extern' for CLASS to - declare a lock defined in another module. In public structure - definitions you must use a pointer to the lock structure (i.e., NAME - begins with a `*'), because its storage size will not be known outside - of libc. */ -#define __libc_lock_define(CLASS,NAME) \ - CLASS __libc_lock_t NAME; -#define __libc_rwlock_define(CLASS,NAME) \ - CLASS __libc_rwlock_t NAME; -#define __rtld_lock_define_recursive(CLASS,NAME) \ - CLASS __rtld_lock_recursive_t NAME; - -/* Define an initialized lock variable NAME with storage class CLASS. - - For the C library we take a deeper look at the initializer. For - this implementation all fields are initialized to zero. Therefore - we don't initialize the variable which allows putting it into the - BSS section. (Except on PA-RISC and other odd architectures, where - initialized locks must be set to one due to the lack of normal - atomic operations.) */ - -#if !defined NOT_IN_libc || defined IS_IN_libpthread -# if LLL_LOCK_INITIALIZER == 0 -# define __libc_lock_define_initialized(CLASS,NAME) \ - CLASS __libc_lock_t NAME; -# else -# define __libc_lock_define_initialized(CLASS,NAME) \ - CLASS __libc_lock_t NAME = LLL_LOCK_INITIALIZER; -# endif -#else -# define __libc_lock_define_initialized(CLASS,NAME) \ - CLASS __libc_lock_t NAME; -#endif - -#define __libc_rwlock_define_initialized(CLASS,NAME) \ - CLASS __libc_rwlock_t NAME = PTHREAD_RWLOCK_INITIALIZER; - -#define __rtld_lock_define_initialized_recursive(CLASS,NAME) \ - CLASS __rtld_lock_recursive_t NAME = _RTLD_LOCK_RECURSIVE_INITIALIZER; -#define _RTLD_LOCK_RECURSIVE_INITIALIZER \ - {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP} - -#define __rtld_lock_initialize(NAME) \ - (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER) - -/* If we check for a weakly referenced symbol and then perform a - normal jump to it te code generated for some platforms in case of - PIC is unnecessarily slow. What would happen is that the function - is first referenced as data and then it is called indirectly - through the PLT. We can make this a direct jump. */ -#ifdef __PIC__ -# define __libc_maybe_call(FUNC, ARGS, ELSE) \ - (__extension__ ({ __typeof (FUNC) *_fn = (FUNC); \ - _fn != NULL ? (*_fn) ARGS : ELSE; })) -#else -# define __libc_maybe_call(FUNC, ARGS, ELSE) \ - (FUNC != NULL ? FUNC ARGS : ELSE) -#endif - -/* Call thread functions through the function pointer table. */ -#if defined SHARED && !defined NOT_IN_libc -# define PTFAVAIL(NAME) __libc_pthread_functions_init -# define __libc_ptf_call(FUNC, ARGS, ELSE) \ - (__libc_pthread_functions_init ? PTHFCT_CALL (ptr_##FUNC, ARGS) : ELSE) -# define __libc_ptf_call_always(FUNC, ARGS) \ - PTHFCT_CALL (ptr_##FUNC, ARGS) -#else -# define PTFAVAIL(NAME) (NAME != NULL) -# define __libc_ptf_call(FUNC, ARGS, ELSE) \ - __libc_maybe_call (FUNC, ARGS, ELSE) -# define __libc_ptf_call_always(FUNC, ARGS) \ - FUNC ARGS -#endif - - -/* Initialize the named lock variable, leaving it in a consistent, unlocked - state. */ -#if !defined NOT_IN_libc || defined IS_IN_libpthread -# define __libc_lock_init(NAME) ((NAME) = LLL_LOCK_INITIALIZER, 0) -#else -# define __libc_lock_init(NAME) \ - __libc_maybe_call (__pthread_mutex_init, (&(NAME), NULL), 0) -#endif -#if defined SHARED && !defined NOT_IN_libc -/* ((NAME) = (__libc_rwlock_t) PTHREAD_RWLOCK_INITIALIZER, 0) is - inefficient. */ -# define __libc_rwlock_init(NAME) \ - (__builtin_memset (&(NAME), '\0', sizeof (NAME)), 0) -#else -# define __libc_rwlock_init(NAME) \ - __libc_maybe_call (__pthread_rwlock_init, (&(NAME), NULL), 0) -#endif - -/* Finalize the named lock variable, which must be locked. It cannot be - used again until __libc_lock_init is called again on it. This must be - called on a lock variable before the containing storage is reused. */ -#if !defined NOT_IN_libc || defined IS_IN_libpthread -# define __libc_lock_fini(NAME) ((void) 0) -#else -# define __libc_lock_fini(NAME) \ - __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0) -#endif -#if defined SHARED && !defined NOT_IN_libc -# define __libc_rwlock_fini(NAME) ((void) 0) -#else -# define __libc_rwlock_fini(NAME) \ - __libc_maybe_call (__pthread_rwlock_destroy, (&(NAME)), 0) -#endif - -/* Lock the named lock variable. */ -#if !defined NOT_IN_libc || defined IS_IN_libpthread -# ifndef __libc_lock_lock -# define __libc_lock_lock(NAME) \ - ({ lll_lock (NAME, LLL_PRIVATE); 0; }) -# endif -#else -# undef __libc_lock_lock -# define __libc_lock_lock(NAME) \ - __libc_maybe_call (__pthread_mutex_lock, (&(NAME)), 0) -#endif -#define __libc_rwlock_rdlock(NAME) \ - __libc_ptf_call (__pthread_rwlock_rdlock, (&(NAME)), 0) -#define __libc_rwlock_wrlock(NAME) \ - __libc_ptf_call (__pthread_rwlock_wrlock, (&(NAME)), 0) - -/* Try to lock the named lock variable. */ -#if !defined NOT_IN_libc || defined IS_IN_libpthread -# ifndef __libc_lock_trylock -# define __libc_lock_trylock(NAME) \ - lll_trylock (NAME) -# endif -#else -# undef __libc_lock_trylock -# define __libc_lock_trylock(NAME) \ - __libc_maybe_call (__pthread_mutex_trylock, (&(NAME)), 0) -#endif -#define __libc_rwlock_tryrdlock(NAME) \ - __libc_maybe_call (__pthread_rwlock_tryrdlock, (&(NAME)), 0) -#define __libc_rwlock_trywrlock(NAME) \ - __libc_maybe_call (__pthread_rwlock_trywrlock, (&(NAME)), 0) - -#define __rtld_lock_trylock_recursive(NAME) \ - __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0) - -/* Unlock the named lock variable. */ -#if !defined NOT_IN_libc || defined IS_IN_libpthread -# define __libc_lock_unlock(NAME) \ - lll_unlock (NAME, LLL_PRIVATE) -#else -# define __libc_lock_unlock(NAME) \ - __libc_maybe_call (__pthread_mutex_unlock, (&(NAME)), 0) -#endif -#define __libc_rwlock_unlock(NAME) \ - __libc_ptf_call (__pthread_rwlock_unlock, (&(NAME)), 0) - -#ifdef SHARED -# define __rtld_lock_default_lock_recursive(lock) \ - ++((pthread_mutex_t *)(lock))->__data.__count; - -# define __rtld_lock_default_unlock_recursive(lock) \ - --((pthread_mutex_t *)(lock))->__data.__count; - -# define __rtld_lock_lock_recursive(NAME) \ - GL(dl_rtld_lock_recursive) (&(NAME).mutex) - -# define __rtld_lock_unlock_recursive(NAME) \ - GL(dl_rtld_unlock_recursive) (&(NAME).mutex) -#else -# define __rtld_lock_lock_recursive(NAME) \ - __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0) - -# define __rtld_lock_unlock_recursive(NAME) \ - __libc_maybe_call (__pthread_mutex_unlock, (&(NAME).mutex), 0) -#endif - -/* Define once control variable. */ -#if PTHREAD_ONCE_INIT == 0 -/* Special case for static variables where we can avoid the initialization - if it is zero. */ -# define __libc_once_define(CLASS, NAME) \ - CLASS pthread_once_t NAME -#else -# define __libc_once_define(CLASS, NAME) \ - CLASS pthread_once_t NAME = PTHREAD_ONCE_INIT -#endif - -/* Call handler iff the first call. */ -#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \ - do { \ - if (PTFAVAIL (__pthread_once)) \ - __libc_ptf_call_always (__pthread_once, (&(ONCE_CONTROL), \ - INIT_FUNCTION)); \ - else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) { \ - INIT_FUNCTION (); \ - (ONCE_CONTROL) |= 2; \ - } \ - } while (0) - -/* Get once control variable. */ -#define __libc_once_get(ONCE_CONTROL) ((ONCE_CONTROL) != PTHREAD_ONCE_INIT) - -/* Note that for I/O cleanup handling we are using the old-style - cancel handling. It does not have to be integrated with C++ snce - no C++ code is called in the middle. The old-style handling is - faster and the support is not going away. */ -extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer, - void (*routine) (void *), void *arg); -extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer, - int execute); -extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer, - void (*routine) (void *), void *arg); -extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer, - int execute); - -/* Sometimes we have to exit the block in the middle. */ -#define __libc_cleanup_end(DOIT) \ - if (_avail) { \ - __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\ - } else if (DOIT) \ - _buffer.__routine (_buffer.__arg) - - -/* Normal cleanup handling, based on C cleanup attribute. */ -__extern_inline void -__libc_cleanup_routine (struct __pthread_cleanup_frame *f) -{ - if (f->__do_it) - f->__cancel_routine (f->__cancel_arg); -} - -#define __libc_cleanup_push(fct, arg) \ - do { \ - struct __pthread_cleanup_frame __clframe \ - __attribute__ ((__cleanup__ (__libc_cleanup_routine))) \ - = { .__cancel_routine = (fct), .__cancel_arg = (arg), \ - .__do_it = 1 }; - -#define __libc_cleanup_pop(execute) \ - __clframe.__do_it = (execute); \ - } while (0) - - -/* Create thread-specific key. */ -#define __libc_key_create(KEY, DESTRUCTOR) \ - __libc_ptf_call (__pthread_key_create, (KEY, DESTRUCTOR), 1) - -/* Get thread-specific data. */ -#define __libc_getspecific(KEY) \ - __libc_ptf_call (__pthread_getspecific, (KEY), NULL) - -/* Set thread-specific data. */ -#define __libc_setspecific(KEY, VALUE) \ - __libc_ptf_call (__pthread_setspecific, (KEY, VALUE), 0) - - -/* Register handlers to execute before and after `fork'. Note that the - last parameter is NULL. The handlers registered by the libc are - never removed so this is OK. */ -#define __libc_atfork(PREPARE, PARENT, CHILD) \ - __register_atfork (PREPARE, PARENT, CHILD, NULL) -extern int __register_atfork (void (*__prepare) (void), - void (*__parent) (void), - void (*__child) (void), - void *__dso_handle); - -/* Functions that are used by this file and are internal to the GNU C - library. */ - -extern int __pthread_mutex_init (pthread_mutex_t *__mutex, - const pthread_mutexattr_t *__mutex_attr); - -extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex); - -extern int __pthread_mutex_trylock (pthread_mutex_t *__mutex); - -extern int __pthread_mutex_lock (pthread_mutex_t *__mutex); - -extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex); - -extern int __pthread_mutexattr_init (pthread_mutexattr_t *__attr); - -extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *__attr); - -extern int __pthread_mutexattr_settype (pthread_mutexattr_t *__attr, - int __kind); - -extern int __pthread_rwlock_init (pthread_rwlock_t *__rwlock, - const pthread_rwlockattr_t *__attr); - -extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock); - -extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock); - -extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock); - -extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock); - -extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock); - -extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock); - -extern int __pthread_key_create (pthread_key_t *__key, - void (*__destr_function) (void *)); - -extern int __pthread_setspecific (pthread_key_t __key, - const void *__pointer); - -extern void *__pthread_getspecific (pthread_key_t __key); - -extern int __pthread_once (pthread_once_t *__once_control, - void (*__init_routine) (void)); - -extern int __pthread_atfork (void (*__prepare) (void), - void (*__parent) (void), - void (*__child) (void)); - - - -/* Make the pthread functions weak so that we can elide them from - single-threaded processes. */ -#ifndef __NO_WEAK_PTHREAD_ALIASES -# ifdef weak_extern -weak_extern (__pthread_mutex_init) -weak_extern (__pthread_mutex_destroy) -weak_extern (__pthread_mutex_lock) -weak_extern (__pthread_mutex_trylock) -weak_extern (__pthread_mutex_unlock) -weak_extern (__pthread_mutexattr_init) -weak_extern (__pthread_mutexattr_destroy) -weak_extern (__pthread_mutexattr_settype) -weak_extern (__pthread_rwlock_init) -weak_extern (__pthread_rwlock_destroy) -weak_extern (__pthread_rwlock_rdlock) -weak_extern (__pthread_rwlock_tryrdlock) -weak_extern (__pthread_rwlock_wrlock) -weak_extern (__pthread_rwlock_trywrlock) -weak_extern (__pthread_rwlock_unlock) -weak_extern (__pthread_key_create) -weak_extern (__pthread_setspecific) -weak_extern (__pthread_getspecific) -weak_extern (__pthread_once) -weak_extern (__pthread_initialize) -weak_extern (__pthread_atfork) -weak_extern (_pthread_cleanup_push_defer) -weak_extern (_pthread_cleanup_pop_restore) -weak_extern (pthread_setcancelstate) -# else -# pragma weak __pthread_mutex_init -# pragma weak __pthread_mutex_destroy -# pragma weak __pthread_mutex_lock -# pragma weak __pthread_mutex_trylock -# pragma weak __pthread_mutex_unlock -# pragma weak __pthread_mutexattr_init -# pragma weak __pthread_mutexattr_destroy -# pragma weak __pthread_mutexattr_settype -# pragma weak __pthread_rwlock_destroy -# pragma weak __pthread_rwlock_rdlock -# pragma weak __pthread_rwlock_tryrdlock -# pragma weak __pthread_rwlock_wrlock -# pragma weak __pthread_rwlock_trywrlock -# pragma weak __pthread_rwlock_unlock -# pragma weak __pthread_key_create -# pragma weak __pthread_setspecific -# pragma weak __pthread_getspecific -# pragma weak __pthread_once -# pragma weak __pthread_initialize -# pragma weak __pthread_atfork -# pragma weak _pthread_cleanup_push_defer -# pragma weak _pthread_cleanup_pop_restore -# pragma weak pthread_setcancelstate -# endif -#endif - -#endif /* bits/libc-lockP.h */ diff --git a/nptl/sysdeps/pthread/bits/sigthread.h b/nptl/sysdeps/pthread/bits/sigthread.h deleted file mode 100644 index 0048d7fd76..0000000000 --- a/nptl/sysdeps/pthread/bits/sigthread.h +++ /dev/null @@ -1,43 +0,0 @@ -/* Signal handling function for threaded programs. - Copyright (C) 1998-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#ifndef _BITS_SIGTHREAD_H -#define _BITS_SIGTHREAD_H 1 - -#if !defined _SIGNAL_H && !defined _PTHREAD_H -# error "Never include this file directly. Use instead" -#endif - -/* Functions for handling signals. */ - -/* Modify the signal mask for the calling thread. The arguments have - the same meaning as for sigprocmask(2). */ -extern int pthread_sigmask (int __how, - const __sigset_t *__restrict __newmask, - __sigset_t *__restrict __oldmask)__THROW; - -/* Send signal SIGNO to the given thread. */ -extern int pthread_kill (pthread_t __threadid, int __signo) __THROW; - -#ifdef __USE_GNU -/* Queue signal and data to a thread. */ -extern int pthread_sigqueue (pthread_t __threadid, int __signo, - const union sigval __value) __THROW; -#endif - -#endif /* bits/sigthread.h */ diff --git a/nptl/sysdeps/pthread/bits/stdio-lock.h b/nptl/sysdeps/pthread/bits/stdio-lock.h deleted file mode 100644 index e2678cc918..0000000000 --- a/nptl/sysdeps/pthread/bits/stdio-lock.h +++ /dev/null @@ -1,110 +0,0 @@ -/* Thread package specific definitions of stream lock type. NPTL version. - Copyright (C) 2000-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#ifndef _BITS_STDIO_LOCK_H -#define _BITS_STDIO_LOCK_H 1 - -#include -#include - - -/* The locking here is very inexpensive, even for inlining. */ -#define _IO_lock_inexpensive 1 - -typedef struct { int lock; int cnt; void *owner; } _IO_lock_t; - -#define _IO_lock_initializer { LLL_LOCK_INITIALIZER, 0, NULL } - -#define _IO_lock_init(_name) \ - ((_name) = (_IO_lock_t) _IO_lock_initializer , 0) - -#define _IO_lock_fini(_name) \ - ((void) 0) - -#define _IO_lock_lock(_name) \ - do { \ - void *__self = THREAD_SELF; \ - if ((_name).owner != __self) \ - { \ - lll_lock ((_name).lock, LLL_PRIVATE); \ - (_name).owner = __self; \ - } \ - ++(_name).cnt; \ - } while (0) - -#define _IO_lock_trylock(_name) \ - ({ \ - int __result = 0; \ - void *__self = THREAD_SELF; \ - if ((_name).owner != __self) \ - { \ - if (lll_trylock ((_name).lock) == 0) \ - { \ - (_name).owner = __self; \ - (_name).cnt = 1; \ - } \ - else \ - __result = EBUSY; \ - } \ - else \ - ++(_name).cnt; \ - __result; \ - }) - -#define _IO_lock_unlock(_name) \ - do { \ - if (--(_name).cnt == 0) \ - { \ - (_name).owner = NULL; \ - lll_unlock ((_name).lock, LLL_PRIVATE); \ - } \ - } while (0) - - - -#define _IO_cleanup_region_start(_fct, _fp) \ - __libc_cleanup_region_start (((_fp)->_flags & _IO_USER_LOCK) == 0, _fct, _fp) -#define _IO_cleanup_region_start_noarg(_fct) \ - __libc_cleanup_region_start (1, _fct, NULL) -#define _IO_cleanup_region_end(_doit) \ - __libc_cleanup_region_end (_doit) - -#if defined _LIBC && !defined NOT_IN_libc - -# ifdef __EXCEPTIONS -# define _IO_acquire_lock(_fp) \ - do { \ - _IO_FILE *_IO_acquire_lock_file \ - __attribute__((cleanup (_IO_acquire_lock_fct))) \ - = (_fp); \ - _IO_flockfile (_IO_acquire_lock_file); -# define _IO_acquire_lock_clear_flags2(_fp) \ - do { \ - _IO_FILE *_IO_acquire_lock_file \ - __attribute__((cleanup (_IO_acquire_lock_clear_flags2_fct))) \ - = (_fp); \ - _IO_flockfile (_IO_acquire_lock_file); -# else -# define _IO_acquire_lock(_fp) _IO_acquire_lock_needs_exceptions_enabled -# define _IO_acquire_lock_clear_flags2(_fp) _IO_acquire_lock (_fp) -# endif -# define _IO_release_lock(_fp) ; } while (0) - -#endif - -#endif /* bits/stdio-lock.h */ diff --git a/nptl/sysdeps/pthread/configure b/nptl/sysdeps/pthread/configure deleted file mode 100644 index 239a039e3a..0000000000 --- a/nptl/sysdeps/pthread/configure +++ /dev/null @@ -1,89 +0,0 @@ -# This file is generated from configure.ac by Autoconf. DO NOT EDIT! - -if test "x$libc_cv_gcc___thread" != xyes; then - as_fn_error $? "compiler support for __thread is required" "$LINENO" 5 -fi - -if test "x${libc_cv_visibility_attribute}" != xyes || - test "x${libc_cv_broken_visibility_attribute}" != xno; then - as_fn_error $? "working compiler support for visibility attribute is required" "$LINENO" 5 -fi - -if test "x$libc_cv_asm_cfi_directives" != xyes; then - case "$base_machine" in - i386 | x86_64 | powerpc | s390) - as_fn_error $? "CFI directive support in assembler is required" "$LINENO" 5 ;; - *) ;; - esac -fi - - -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for forced unwind support" >&5 -$as_echo_n "checking for forced unwind support... " >&6; } -if ${libc_cv_forced_unwind+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ -#include -int -main () -{ - -struct _Unwind_Exception exc; -struct _Unwind_Context *context; -_Unwind_GetCFA (context) - ; - return 0; -} -_ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - libc_cv_forced_unwind=yes -else - libc_cv_forced_unwind=no -fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_forced_unwind" >&5 -$as_echo "$libc_cv_forced_unwind" >&6; } -if test $libc_cv_forced_unwind = yes; then - $as_echo "#define HAVE_FORCED_UNWIND 1" >>confdefs.h - - old_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -Werror -fexceptions" - { $as_echo "$as_me:${as_lineno-$LINENO}: checking for C cleanup handling" >&5 -$as_echo_n "checking for C cleanup handling... " >&6; } -if ${libc_cv_c_cleanup+:} false; then : - $as_echo_n "(cached) " >&6 -else - cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ - -extern void some_function (void); -void cl (void *a) { } -int -main () -{ - - int a __attribute__ ((cleanup (cl))); - some_function () - ; - return 0; -} -_ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - libc_cv_c_cleanup=yes -else - libc_cv_c_cleanup=no -fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext -fi -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_c_cleanup" >&5 -$as_echo "$libc_cv_c_cleanup" >&6; } - CFLAGS="$old_CFLAGS" - if test $libc_cv_c_cleanup = no; then - as_fn_error $? "the compiler must support C cleanup handling" "$LINENO" 5 - fi -else - as_fn_error $? "forced unwind support is required" "$LINENO" 5 -fi diff --git a/nptl/sysdeps/pthread/configure.ac b/nptl/sysdeps/pthread/configure.ac deleted file mode 100644 index 413af96799..0000000000 --- a/nptl/sysdeps/pthread/configure.ac +++ /dev/null @@ -1,49 +0,0 @@ -dnl configure fragment for new libpthread implementation. -GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. - -if test "x$libc_cv_gcc___thread" != xyes; then - AC_MSG_ERROR(compiler support for __thread is required) -fi - -if test "x${libc_cv_visibility_attribute}" != xyes || - test "x${libc_cv_broken_visibility_attribute}" != xno; then - AC_MSG_ERROR(working compiler support for visibility attribute is required) -fi - -if test "x$libc_cv_asm_cfi_directives" != xyes; then - dnl We need this only for some architectures. - case "$base_machine" in - i386 | x86_64 | powerpc | s390) - AC_MSG_ERROR(CFI directive support in assembler is required) ;; - *) ;; - esac -fi - -dnl Iff is available, make sure it is the right one and it -dnl contains struct _Unwind_Exception. -AC_CACHE_CHECK(dnl -for forced unwind support, libc_cv_forced_unwind, [dnl -AC_TRY_COMPILE([#include ], [ -struct _Unwind_Exception exc; -struct _Unwind_Context *context; -_Unwind_GetCFA (context)], -libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)]) -if test $libc_cv_forced_unwind = yes; then - AC_DEFINE(HAVE_FORCED_UNWIND) -dnl Check for C cleanup handling. - old_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -Werror -fexceptions" - AC_CACHE_CHECK([for C cleanup handling], libc_cv_c_cleanup, [dnl - AC_TRY_COMPILE([ -extern void some_function (void); -void cl (void *a) { }], [ - int a __attribute__ ((cleanup (cl))); - some_function ()], -libc_cv_c_cleanup=yes, libc_cv_c_cleanup=no)]) - CFLAGS="$old_CFLAGS" - if test $libc_cv_c_cleanup = no; then - AC_MSG_ERROR([the compiler must support C cleanup handling]) - fi -else - AC_MSG_ERROR(forced unwind support is required) -fi diff --git a/nptl/sysdeps/pthread/createthread.c b/nptl/sysdeps/pthread/createthread.c deleted file mode 100644 index 28c1ea67d3..0000000000 --- a/nptl/sysdeps/pthread/createthread.c +++ /dev/null @@ -1,259 +0,0 @@ -/* Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 2002. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include "kernel-features.h" - - -#define CLONE_SIGNAL (CLONE_SIGHAND | CLONE_THREAD) - -/* The header should define the macro TLS_DEFINE_INIT_TP such that: - TLS_DEFINE_INIT_TP (VAR, PD); - Declares and initializes a variable VAR with the value that should - be passed to the OS thread creation function (e.g. clone) to initialize - its TLS state for the 'struct pthread *' PD. */ -#ifndef TLS_DEFINE_INIT_TP -/* For a transitional period while all the implementations are - getting updated, we define it using the old TLS_VALUE macro. */ -# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = TLS_VALUE -# ifndef TLS_VALUE -# define TLS_VALUE pd -# endif -#endif - -#ifndef ARCH_CLONE -# define ARCH_CLONE __clone -#endif - - -#ifndef TLS_MULTIPLE_THREADS_IN_TCB -/* Pointer to the corresponding variable in libc. */ -int *__libc_multiple_threads_ptr attribute_hidden; -#endif - - -static int -do_clone (struct pthread *pd, const struct pthread_attr *attr, - int clone_flags, int (*fct) (void *), STACK_VARIABLES_PARMS, - int stopped) -{ - TLS_DEFINE_INIT_TP (tp, pd); - - if (__glibc_unlikely (stopped != 0)) - /* We make sure the thread does not run far by forcing it to get a - lock. We lock it here too so that the new thread cannot continue - until we tell it to. */ - lll_lock (pd->lock, LLL_PRIVATE); - - /* One more thread. We cannot have the thread do this itself, since it - might exist but not have been scheduled yet by the time we've returned - and need to check the value to behave correctly. We must do it before - creating the thread, in case it does get scheduled first and then - might mistakenly think it was the only thread. In the failure case, - we momentarily store a false value; this doesn't matter because there - is no kosher thing a signal handler interrupting us right here can do - that cares whether the thread count is correct. */ - atomic_increment (&__nptl_nthreads); - - int rc = ARCH_CLONE (fct, STACK_VARIABLES_ARGS, clone_flags, - pd, &pd->tid, tp, &pd->tid); - - if (__glibc_unlikely (rc == -1)) - { - atomic_decrement (&__nptl_nthreads); /* Oops, we lied for a second. */ - - /* Perhaps a thread wants to change the IDs and if waiting - for this stillborn thread. */ - if (__builtin_expect (atomic_exchange_acq (&pd->setxid_futex, 0) - == -2, 0)) - lll_futex_wake (&pd->setxid_futex, 1, LLL_PRIVATE); - - /* Free the resources. */ - __deallocate_stack (pd); - - /* We have to translate error codes. */ - return errno == ENOMEM ? EAGAIN : errno; - } - - /* Now we have the possibility to set scheduling parameters etc. */ - if (__glibc_unlikely (stopped != 0)) - { - INTERNAL_SYSCALL_DECL (err); - int res = 0; - - /* Set the affinity mask if necessary. */ - if (attr->cpuset != NULL) - { - res = INTERNAL_SYSCALL (sched_setaffinity, err, 3, pd->tid, - attr->cpusetsize, attr->cpuset); - - if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (res, err))) - { - /* The operation failed. We have to kill the thread. First - send it the cancellation signal. */ - INTERNAL_SYSCALL_DECL (err2); - err_out: - (void) INTERNAL_SYSCALL (tgkill, err2, 3, - THREAD_GETMEM (THREAD_SELF, pid), - pd->tid, SIGCANCEL); - - /* We do not free the stack here because the canceled thread - itself will do this. */ - - return (INTERNAL_SYSCALL_ERROR_P (res, err) - ? INTERNAL_SYSCALL_ERRNO (res, err) - : 0); - } - } - - /* Set the scheduling parameters. */ - if ((attr->flags & ATTR_FLAG_NOTINHERITSCHED) != 0) - { - res = INTERNAL_SYSCALL (sched_setscheduler, err, 3, pd->tid, - pd->schedpolicy, &pd->schedparam); - - if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (res, err))) - goto err_out; - } - } - - /* We now have for sure more than one thread. The main thread might - not yet have the flag set. No need to set the global variable - again if this is what we use. */ - THREAD_SETMEM (THREAD_SELF, header.multiple_threads, 1); - - return 0; -} - - -static int -create_thread (struct pthread *pd, const struct pthread_attr *attr, - STACK_VARIABLES_PARMS) -{ -#if TLS_TCB_AT_TP - assert (pd->header.tcb != NULL); -#endif - - /* We rely heavily on various flags the CLONE function understands: - - CLONE_VM, CLONE_FS, CLONE_FILES - These flags select semantics with shared address space and - file descriptors according to what POSIX requires. - - CLONE_SIGNAL - This flag selects the POSIX signal semantics. - - CLONE_SETTLS - The sixth parameter to CLONE determines the TLS area for the - new thread. - - CLONE_PARENT_SETTID - The kernels writes the thread ID of the newly created thread - into the location pointed to by the fifth parameters to CLONE. - - Note that it would be semantically equivalent to use - CLONE_CHILD_SETTID but it is be more expensive in the kernel. - - CLONE_CHILD_CLEARTID - The kernels clears the thread ID of a thread that has called - sys_exit() in the location pointed to by the seventh parameter - to CLONE. - - The termination signal is chosen to be zero which means no signal - is sent. */ - int clone_flags = (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGNAL - | CLONE_SETTLS | CLONE_PARENT_SETTID - | CLONE_CHILD_CLEARTID | CLONE_SYSVSEM - | 0); - - if (__glibc_unlikely (THREAD_GETMEM (THREAD_SELF, report_events))) - { - /* The parent thread is supposed to report events. Check whether - the TD_CREATE event is needed, too. */ - const int _idx = __td_eventword (TD_CREATE); - const uint32_t _mask = __td_eventmask (TD_CREATE); - - if ((_mask & (__nptl_threads_events.event_bits[_idx] - | pd->eventbuf.eventmask.event_bits[_idx])) != 0) - { - /* We always must have the thread start stopped. */ - pd->stopped_start = true; - - /* Create the thread. We always create the thread stopped - so that it does not get far before we tell the debugger. */ - int res = do_clone (pd, attr, clone_flags, start_thread, - STACK_VARIABLES_ARGS, 1); - if (res == 0) - { - /* Now fill in the information about the new thread in - the newly created thread's data structure. We cannot let - the new thread do this since we don't know whether it was - already scheduled when we send the event. */ - pd->eventbuf.eventnum = TD_CREATE; - pd->eventbuf.eventdata = pd; - - /* Enqueue the descriptor. */ - do - pd->nextevent = __nptl_last_event; - while (atomic_compare_and_exchange_bool_acq (&__nptl_last_event, - pd, pd->nextevent) - != 0); - - /* Now call the function which signals the event. */ - __nptl_create_event (); - - /* And finally restart the new thread. */ - lll_unlock (pd->lock, LLL_PRIVATE); - } - - return res; - } - } - -#ifdef NEED_DL_SYSINFO - assert (THREAD_SELF_SYSINFO == THREAD_SYSINFO (pd)); -#endif - - /* Determine whether the newly created threads has to be started - stopped since we have to set the scheduling parameters or set the - affinity. */ - bool stopped = false; - if (attr != NULL && (attr->cpuset != NULL - || (attr->flags & ATTR_FLAG_NOTINHERITSCHED) != 0)) - stopped = true; - pd->stopped_start = stopped; - pd->parent_cancelhandling = THREAD_GETMEM (THREAD_SELF, cancelhandling); - - /* Actually create the thread. */ - int res = do_clone (pd, attr, clone_flags, start_thread, - STACK_VARIABLES_ARGS, stopped); - - if (res == 0 && stopped) - /* And finally restart the new thread. */ - lll_unlock (pd->lock, LLL_PRIVATE); - - return res; -} diff --git a/nptl/sysdeps/pthread/flockfile.c b/nptl/sysdeps/pthread/flockfile.c deleted file mode 100644 index da26824cc7..0000000000 --- a/nptl/sysdeps/pthread/flockfile.c +++ /dev/null @@ -1,32 +0,0 @@ -/* Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 2002. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include -#include - - -void -__flockfile (stream) - FILE *stream; -{ - _IO_lock_lock (*stream->_lock); -} -strong_alias (__flockfile, _IO_flockfile) -weak_alias (__flockfile, flockfile) diff --git a/nptl/sysdeps/pthread/ftrylockfile.c b/nptl/sysdeps/pthread/ftrylockfile.c deleted file mode 100644 index 7921d607ef..0000000000 --- a/nptl/sysdeps/pthread/ftrylockfile.c +++ /dev/null @@ -1,32 +0,0 @@ -/* Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 2002. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include -#include - - -int -__ftrylockfile (stream) - FILE *stream; -{ - return _IO_lock_trylock (*stream->_lock); -} -strong_alias (__ftrylockfile, _IO_ftrylockfile) -weak_alias (__ftrylockfile, ftrylockfile) diff --git a/nptl/sysdeps/pthread/funlockfile.c b/nptl/sysdeps/pthread/funlockfile.c deleted file mode 100644 index 2b367db112..0000000000 --- a/nptl/sysdeps/pthread/funlockfile.c +++ /dev/null @@ -1,32 +0,0 @@ -/* Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 2002. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include -#include - - -void -__funlockfile (stream) - FILE *stream; -{ - _IO_lock_unlock (*stream->_lock); -} -strong_alias (__funlockfile, _IO_funlockfile) -weak_alias (__funlockfile, funlockfile) diff --git a/nptl/sysdeps/pthread/gai_misc.h b/nptl/sysdeps/pthread/gai_misc.h deleted file mode 100644 index 946275ed75..0000000000 --- a/nptl/sysdeps/pthread/gai_misc.h +++ /dev/null @@ -1,121 +0,0 @@ -/* Copyright (C) 2006-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -/* We define a special synchronization primitive for AIO. POSIX - conditional variables would be ideal but the pthread_cond_*wait - operations do not return on EINTR. This is a requirement for - correct aio_suspend and lio_listio implementations. */ - -#include -#include -#include -#include - -#define DONT_NEED_GAI_MISC_COND 1 - -#define GAI_MISC_NOTIFY(waitlist) \ - do { \ - if (*waitlist->counterp > 0 && --*waitlist->counterp == 0) \ - lll_futex_wake (waitlist->counterp, 1, LLL_PRIVATE); \ - } while (0) - -#define GAI_MISC_WAIT(result, futex, timeout, cancel) \ - do { \ - volatile int *futexaddr = &futex; \ - int oldval = futex; \ - \ - if (oldval != 0) \ - { \ - pthread_mutex_unlock (&__gai_requests_mutex); \ - \ - int oldtype; \ - if (cancel) \ - oldtype = LIBC_CANCEL_ASYNC (); \ - \ - int status; \ - do \ - { \ - status = lll_futex_timed_wait (futexaddr, oldval, timeout, \ - LLL_PRIVATE); \ - if (status != -EWOULDBLOCK) \ - break; \ - \ - oldval = *futexaddr; \ - } \ - while (oldval != 0); \ - \ - if (cancel) \ - LIBC_CANCEL_RESET (oldtype); \ - \ - if (status == -EINTR) \ - result = EINTR; \ - else if (status == -ETIMEDOUT) \ - result = EAGAIN; \ - else \ - assert (status == 0 || status == -EWOULDBLOCK); \ - \ - pthread_mutex_lock (&__gai_requests_mutex); \ - } \ - } while (0) - - -#define gai_start_notify_thread __gai_start_notify_thread -#define gai_create_helper_thread __gai_create_helper_thread - -extern inline void -__gai_start_notify_thread (void) -{ - sigset_t ss; - sigemptyset (&ss); - INTERNAL_SYSCALL_DECL (err); - INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, NULL, _NSIG / 8); -} - -extern inline int -__gai_create_helper_thread (pthread_t *threadp, void *(*tf) (void *), - void *arg) -{ - pthread_attr_t attr; - - /* Make sure the thread is created detached. */ - pthread_attr_init (&attr); - pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); - - /* The helper thread needs only very little resources. */ - (void) pthread_attr_setstacksize (&attr, - __pthread_get_minstack (&attr) - + 4 * PTHREAD_STACK_MIN); - - /* Block all signals in the helper thread. To do this thoroughly we - temporarily have to block all signals here. */ - sigset_t ss; - sigset_t oss; - sigfillset (&ss); - INTERNAL_SYSCALL_DECL (err); - INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, &oss, _NSIG / 8); - - int ret = pthread_create (threadp, &attr, tf, arg); - - /* Restore the signal mask. */ - INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &oss, NULL, - _NSIG / 8); - - (void) pthread_attr_destroy (&attr); - return ret; -} - -#include_next diff --git a/nptl/sysdeps/pthread/librt-cancellation.c b/nptl/sysdeps/pthread/librt-cancellation.c deleted file mode 100644 index e512929fbe..0000000000 --- a/nptl/sysdeps/pthread/librt-cancellation.c +++ /dev/null @@ -1,24 +0,0 @@ -/* Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 2002. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include "pthreadP.h" - - -#define __pthread_enable_asynccancel __librt_enable_asynccancel -#define __pthread_disable_asynccancel __librt_disable_asynccancel -#include diff --git a/nptl/sysdeps/pthread/list.h b/nptl/sysdeps/pthread/list.h deleted file mode 100644 index 749c727175..0000000000 --- a/nptl/sysdeps/pthread/list.h +++ /dev/null @@ -1,117 +0,0 @@ -/* Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 2002. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#ifndef _LIST_H - -#ifndef __need_list_t -# define _LIST_H 1 -#endif - -/* The definitions of this file are adopted from those which can be - found in the Linux kernel headers to enable people familiar with - the latter find their way in these sources as well. */ - - -#if defined __need_list_t || defined _LIST_H -# ifndef __list_t_defined -# define __list_t_defined -/* Basic type for the double-link list. */ -typedef struct list_head -{ - struct list_head *next; - struct list_head *prev; -} list_t; -# endif -# undef __need_list_t -#endif - -#ifdef _LIST_H - -# include - -/* Define a variable with the head and tail of the list. */ -# define LIST_HEAD(name) \ - list_t name = { &(name), &(name) } - -/* Initialize a new list head. */ -# define INIT_LIST_HEAD(ptr) \ - (ptr)->next = (ptr)->prev = (ptr) - - -/* Add new element at the head of the list. */ -static inline void -list_add (list_t *newp, list_t *head) -{ - newp->next = head->next; - newp->prev = head; - head->next->prev = newp; - atomic_write_barrier (); - head->next = newp; -} - - -/* Remove element from list. */ -static inline void -list_del (list_t *elem) -{ - elem->next->prev = elem->prev; - elem->prev->next = elem->next; -} - - -/* Join two lists. */ -static inline void -list_splice (list_t *add, list_t *head) -{ - /* Do nothing if the list which gets added is empty. */ - if (add != add->next) - { - add->next->prev = head; - add->prev->next = head->next; - head->next->prev = add->prev; - head->next = add->next; - } -} - - -/* Get typed element from list at a given position. */ -# define list_entry(ptr, type, member) \ - ((type *) ((char *) (ptr) - (unsigned long) (&((type *) 0)->member))) - - - -/* Iterate forward over the elements of the list. */ -# define list_for_each(pos, head) \ - for (pos = (head)->next; pos != (head); pos = pos->next) - - -/* Iterate forward over the elements of the list. */ -# define list_for_each_prev(pos, head) \ - for (pos = (head)->prev; pos != (head); pos = pos->prev) - - -/* Iterate backwards over the elements list. The list elements can be - removed from the list while doing this. */ -# define list_for_each_prev_safe(pos, p, head) \ - for (pos = (head)->prev, p = pos->prev; \ - pos != (head); \ - pos = p, p = pos->prev) - -#endif /* _LIST_H */ - -#endif /* list.h */ diff --git a/nptl/sysdeps/pthread/malloc-machine.h b/nptl/sysdeps/pthread/malloc-machine.h deleted file mode 100644 index ad480a37d8..0000000000 --- a/nptl/sysdeps/pthread/malloc-machine.h +++ /dev/null @@ -1,73 +0,0 @@ -/* Basic platform-independent macro definitions for mutexes, - thread-specific data and parameters for malloc. - Copyright (C) 2003-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#ifndef _MALLOC_MACHINE_H -#define _MALLOC_MACHINE_H - -#undef thread_atfork_static - -#include -#include - -__libc_lock_define (typedef, mutex_t) - -#define mutex_init(m) __libc_lock_init (*(m)) -#define mutex_lock(m) __libc_lock_lock (*(m)) -#define mutex_trylock(m) __libc_lock_trylock (*(m)) -#define mutex_unlock(m) __libc_lock_unlock (*(m)) -#define MUTEX_INITIALIZER LLL_LOCK_INITIALIZER - -/* This is defined by newer gcc version unique for each module. */ -extern void *__dso_handle __attribute__ ((__weak__)); - -#include - -#define ATFORK_MEM static struct fork_handler atfork_mem - -#ifdef SHARED -# define thread_atfork(prepare, parent, child) \ - atfork_mem.prepare_handler = prepare; \ - atfork_mem.parent_handler = parent; \ - atfork_mem.child_handler = child; \ - atfork_mem.dso_handle = __dso_handle; \ - atfork_mem.refcntr = 1; \ - __linkin_atfork (&atfork_mem) -#else -# define thread_atfork(prepare, parent, child) \ - atfork_mem.prepare_handler = prepare; \ - atfork_mem.parent_handler = parent; \ - atfork_mem.child_handler = child; \ - atfork_mem.dso_handle = &__dso_handle == NULL ? NULL : __dso_handle; \ - atfork_mem.refcntr = 1; \ - __linkin_atfork (&atfork_mem) -#endif - -/* thread specific data for glibc */ - -#include - -typedef int tsd_key_t[1]; /* no key data structure, libc magic does it */ -__libc_tsd_define (static, void *, MALLOC) /* declaration/common definition */ -#define tsd_key_create(key, destr) ((void) (key)) -#define tsd_setspecific(key, data) __libc_tsd_set (void *, MALLOC, (data)) -#define tsd_getspecific(key, vptr) ((vptr) = __libc_tsd_get (void *, MALLOC)) - -#include - -#endif /* !defined(_MALLOC_MACHINE_H) */ diff --git a/nptl/sysdeps/pthread/posix-timer.h b/nptl/sysdeps/pthread/posix-timer.h deleted file mode 100644 index 1076110344..0000000000 --- a/nptl/sysdeps/pthread/posix-timer.h +++ /dev/null @@ -1,196 +0,0 @@ -/* Definitions for POSIX timer implementation on top of NPTL. - Copyright (C) 2000-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Kaz Kylheku . - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include - -/* Double linked list. */ -struct list_links -{ - struct list_links *next; - struct list_links *prev; -}; - - -/* Forward declaration. */ -struct timer_node; - - -/* Definitions for an internal thread of the POSIX timer implementation. */ -struct thread_node -{ - struct list_links links; - pthread_attr_t attr; - pthread_t id; - unsigned int exists; - struct list_links timer_queue; - pthread_cond_t cond; - struct timer_node *current_timer; - pthread_t captured; - clockid_t clock_id; -}; - - -/* Internal representation of a timer. */ -struct timer_node -{ - struct list_links links; - struct sigevent event; - clockid_t clock; - struct itimerspec value; - struct timespec expirytime; - pthread_attr_t attr; - unsigned int abstime; - unsigned int armed; - enum { - TIMER_FREE, TIMER_INUSE, TIMER_DELETED - } inuse; - struct thread_node *thread; - pid_t creator_pid; - int refcount; - int overrun_count; -}; - - -/* The limit is not published if we are compiled with kernel timer support. - But we still compiled in this implementation with its limit unless built - to require the kernel support. */ -#ifndef TIMER_MAX -# define TIMER_MAX 256 -#endif - -/* Static array with the structures for all the timers. */ -extern struct timer_node __timer_array[TIMER_MAX]; - -/* Global lock to protect operation on the lists. */ -extern pthread_mutex_t __timer_mutex; - -/* Variable to protext initialization. */ -extern pthread_once_t __timer_init_once_control; - -/* Nonzero if initialization of timer implementation failed. */ -extern int __timer_init_failed; - -/* Node for the thread used to deliver signals. */ -extern struct thread_node __timer_signal_thread_rclk; - - -/* Return pointer to timer structure corresponding to ID. */ -#define timer_id2ptr(timerid) ((struct timer_node *) timerid) -#define timer_ptr2id(timerid) ((void *) timerid) - -/* Check whether timer is valid; global mutex must be held. */ -static inline int -timer_valid (struct timer_node *timer) -{ - return timer && timer->inuse == TIMER_INUSE; -} - -/* Timer refcount functions; need global mutex. */ -extern void __timer_dealloc (struct timer_node *timer); - -static inline void -timer_addref (struct timer_node *timer) -{ - timer->refcount++; -} - -static inline void -timer_delref (struct timer_node *timer) -{ - if (--timer->refcount == 0) - __timer_dealloc (timer); -} - -/* Timespec helper routines. */ -static inline int -__attribute ((always_inline)) -timespec_compare (const struct timespec *left, const struct timespec *right) -{ - if (left->tv_sec < right->tv_sec) - return -1; - if (left->tv_sec > right->tv_sec) - return 1; - - if (left->tv_nsec < right->tv_nsec) - return -1; - if (left->tv_nsec > right->tv_nsec) - return 1; - - return 0; -} - -static inline void -timespec_add (struct timespec *sum, const struct timespec *left, - const struct timespec *right) -{ - sum->tv_sec = left->tv_sec + right->tv_sec; - sum->tv_nsec = left->tv_nsec + right->tv_nsec; - - if (sum->tv_nsec >= 1000000000) - { - ++sum->tv_sec; - sum->tv_nsec -= 1000000000; - } -} - -static inline void -timespec_sub (struct timespec *diff, const struct timespec *left, - const struct timespec *right) -{ - diff->tv_sec = left->tv_sec - right->tv_sec; - diff->tv_nsec = left->tv_nsec - right->tv_nsec; - - if (diff->tv_nsec < 0) - { - --diff->tv_sec; - diff->tv_nsec += 1000000000; - } -} - - -/* We need one of the list functions in the other modules. */ -static inline void -list_unlink_ip (struct list_links *list) -{ - struct list_links *lnext = list->next, *lprev = list->prev; - - lnext->prev = lprev; - lprev->next = lnext; - - /* The suffix ip means idempotent; list_unlink_ip can be called - * two or more times on the same node. - */ - - list->next = list; - list->prev = list; -} - - -/* Functions in the helper file. */ -extern void __timer_mutex_cancel_handler (void *arg); -extern void __timer_init_once (void); -extern struct timer_node *__timer_alloc (void); -extern int __timer_thread_start (struct thread_node *thread); -extern struct thread_node *__timer_thread_find_matching (const pthread_attr_t *desired_attr, clockid_t); -extern struct thread_node *__timer_thread_alloc (const pthread_attr_t *desired_attr, clockid_t); -extern void __timer_thread_dealloc (struct thread_node *thread); -extern int __timer_thread_queue_timer (struct thread_node *thread, - struct timer_node *insert); -extern void __timer_thread_wakeup (struct thread_node *thread); diff --git a/nptl/sysdeps/pthread/pt-longjmp.c b/nptl/sysdeps/pthread/pt-longjmp.c deleted file mode 100644 index 09b3c7eb86..0000000000 --- a/nptl/sysdeps/pthread/pt-longjmp.c +++ /dev/null @@ -1,28 +0,0 @@ -/* Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 2002. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include "pthreadP.h" - -void -longjmp (jmp_buf env, int val) -{ - __libc_longjmp (env, val); -} -weak_alias (longjmp, siglongjmp) diff --git a/nptl/sysdeps/pthread/pthread-functions.h b/nptl/sysdeps/pthread/pthread-functions.h deleted file mode 100644 index 631442585a..0000000000 --- a/nptl/sysdeps/pthread/pthread-functions.h +++ /dev/null @@ -1,117 +0,0 @@ -/* Copyright (C) 2003-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 2003. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#ifndef _PTHREAD_FUNCTIONS_H -#define _PTHREAD_FUNCTIONS_H 1 - -#include -#include -#include -#include - -struct xid_command; - -/* Data type shared with libc. The libc uses it to pass on calls to - the thread functions. */ -struct pthread_functions -{ - int (*ptr_pthread_attr_destroy) (pthread_attr_t *); - int (*ptr___pthread_attr_init_2_0) (pthread_attr_t *); - int (*ptr___pthread_attr_init_2_1) (pthread_attr_t *); - int (*ptr_pthread_attr_getdetachstate) (const pthread_attr_t *, int *); - int (*ptr_pthread_attr_setdetachstate) (pthread_attr_t *, int); - int (*ptr_pthread_attr_getinheritsched) (const pthread_attr_t *, int *); - int (*ptr_pthread_attr_setinheritsched) (pthread_attr_t *, int); - int (*ptr_pthread_attr_getschedparam) (const pthread_attr_t *, - struct sched_param *); - int (*ptr_pthread_attr_setschedparam) (pthread_attr_t *, - const struct sched_param *); - int (*ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *); - int (*ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int); - int (*ptr_pthread_attr_getscope) (const pthread_attr_t *, int *); - int (*ptr_pthread_attr_setscope) (pthread_attr_t *, int); - int (*ptr_pthread_condattr_destroy) (pthread_condattr_t *); - int (*ptr_pthread_condattr_init) (pthread_condattr_t *); - int (*ptr___pthread_cond_broadcast) (pthread_cond_t *); - int (*ptr___pthread_cond_destroy) (pthread_cond_t *); - int (*ptr___pthread_cond_init) (pthread_cond_t *, - const pthread_condattr_t *); - int (*ptr___pthread_cond_signal) (pthread_cond_t *); - int (*ptr___pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *); - int (*ptr___pthread_cond_timedwait) (pthread_cond_t *, pthread_mutex_t *, - const struct timespec *); - int (*ptr___pthread_cond_broadcast_2_0) (pthread_cond_2_0_t *); - int (*ptr___pthread_cond_destroy_2_0) (pthread_cond_2_0_t *); - int (*ptr___pthread_cond_init_2_0) (pthread_cond_2_0_t *, - const pthread_condattr_t *); - int (*ptr___pthread_cond_signal_2_0) (pthread_cond_2_0_t *); - int (*ptr___pthread_cond_wait_2_0) (pthread_cond_2_0_t *, pthread_mutex_t *); - int (*ptr___pthread_cond_timedwait_2_0) (pthread_cond_2_0_t *, - pthread_mutex_t *, - const struct timespec *); - int (*ptr_pthread_equal) (pthread_t, pthread_t); - void (*ptr___pthread_exit) (void *) __attribute__ ((__noreturn__)); - int (*ptr_pthread_getschedparam) (pthread_t, int *, struct sched_param *); - int (*ptr_pthread_setschedparam) (pthread_t, int, - const struct sched_param *); - int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *); - int (*ptr_pthread_mutex_init) (pthread_mutex_t *, - const pthread_mutexattr_t *); - int (*ptr_pthread_mutex_lock) (pthread_mutex_t *); - int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *); - pthread_t (*ptr_pthread_self) (void); - int (*ptr_pthread_setcancelstate) (int, int *); - int (*ptr_pthread_setcanceltype) (int, int *); - void (*ptr___pthread_cleanup_upto) (__jmp_buf, char *); - int (*ptr___pthread_once) (pthread_once_t *, void (*) (void)); - int (*ptr___pthread_rwlock_rdlock) (pthread_rwlock_t *); - int (*ptr___pthread_rwlock_wrlock) (pthread_rwlock_t *); - int (*ptr___pthread_rwlock_unlock) (pthread_rwlock_t *); - int (*ptr___pthread_key_create) (pthread_key_t *, void (*) (void *)); - void *(*ptr___pthread_getspecific) (pthread_key_t); - int (*ptr___pthread_setspecific) (pthread_key_t, const void *); - void (*ptr__pthread_cleanup_push_defer) (struct _pthread_cleanup_buffer *, - void (*) (void *), void *); - void (*ptr__pthread_cleanup_pop_restore) (struct _pthread_cleanup_buffer *, - int); -#define HAVE_PTR_NTHREADS - unsigned int *ptr_nthreads; - void (*ptr___pthread_unwind) (__pthread_unwind_buf_t *) - __attribute ((noreturn)) __cleanup_fct_attribute; - void (*ptr__nptl_deallocate_tsd) (void); - int (*ptr__nptl_setxid) (struct xid_command *); - void (*ptr_freeres) (void); - void (*ptr_set_robust) (struct pthread *); -}; - -/* Variable in libc.so. */ -extern struct pthread_functions __libc_pthread_functions attribute_hidden; -extern int __libc_pthread_functions_init attribute_hidden; - -#ifdef PTR_DEMANGLE -# define PTHFCT_CALL(fct, params) \ - ({ __typeof (__libc_pthread_functions.fct) __p; \ - __p = __libc_pthread_functions.fct; \ - PTR_DEMANGLE (__p); \ - __p params; }) -#else -# define PTHFCT_CALL(fct, params) \ - __libc_pthread_functions.fct params -#endif - -#endif /* pthread-functions.h */ diff --git a/nptl/sysdeps/pthread/pthread.h b/nptl/sysdeps/pthread/pthread.h deleted file mode 100644 index 40a3e215cc..0000000000 --- a/nptl/sysdeps/pthread/pthread.h +++ /dev/null @@ -1,1163 +0,0 @@ -/* Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#ifndef _PTHREAD_H -#define _PTHREAD_H 1 - -#include -#include -#include -#include - -#include -#include -#include - - -/* Detach state. */ -enum -{ - PTHREAD_CREATE_JOINABLE, -#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE - PTHREAD_CREATE_DETACHED -#define PTHREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED -}; - - -/* Mutex types. */ -enum -{ - PTHREAD_MUTEX_TIMED_NP, - PTHREAD_MUTEX_RECURSIVE_NP, - PTHREAD_MUTEX_ERRORCHECK_NP, - PTHREAD_MUTEX_ADAPTIVE_NP -#if defined __USE_UNIX98 || defined __USE_XOPEN2K8 - , - PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP, - PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP, - PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP, - PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL -#endif -#ifdef __USE_GNU - /* For compatibility. */ - , PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_TIMED_NP -#endif -}; - - -#ifdef __USE_XOPEN2K -/* Robust mutex or not flags. */ -enum -{ - PTHREAD_MUTEX_STALLED, - PTHREAD_MUTEX_STALLED_NP = PTHREAD_MUTEX_STALLED, - PTHREAD_MUTEX_ROBUST, - PTHREAD_MUTEX_ROBUST_NP = PTHREAD_MUTEX_ROBUST -}; -#endif - - -#if defined __USE_POSIX199506 || defined __USE_UNIX98 -/* Mutex protocols. */ -enum -{ - PTHREAD_PRIO_NONE, - PTHREAD_PRIO_INHERIT, - PTHREAD_PRIO_PROTECT -}; -#endif - - -#ifdef __PTHREAD_MUTEX_HAVE_PREV -# define PTHREAD_MUTEX_INITIALIZER \ - { { 0, 0, 0, 0, 0, __PTHREAD_SPINS, { 0, 0 } } } -# ifdef __USE_GNU -# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __PTHREAD_SPINS, { 0, 0 } } } -# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __PTHREAD_SPINS, { 0, 0 } } } -# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } } -# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } } - -# endif -#else -# define PTHREAD_MUTEX_INITIALIZER \ - { { 0, 0, 0, 0, 0, { __PTHREAD_SPINS } } } -# ifdef __USE_GNU -# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { __PTHREAD_SPINS } } } -# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { __PTHREAD_SPINS } } } -# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { __PTHREAD_SPINS } } } - -# endif -#endif - - -/* Read-write lock types. */ -#if defined __USE_UNIX98 || defined __USE_XOPEN2K -enum -{ - PTHREAD_RWLOCK_PREFER_READER_NP, - PTHREAD_RWLOCK_PREFER_WRITER_NP, - PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, - PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_READER_NP -}; - -/* Define __PTHREAD_RWLOCK_INT_FLAGS_SHARED to 1 if pthread_rwlock_t - has the shared field. All 64-bit architectures have the shared field - in pthread_rwlock_t. */ -#ifndef __PTHREAD_RWLOCK_INT_FLAGS_SHARED -# if __WORDSIZE == 64 -# define __PTHREAD_RWLOCK_INT_FLAGS_SHARED 1 -# endif -#endif - -/* Read-write lock initializers. */ -# define PTHREAD_RWLOCK_INITIALIZER \ - { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } } -# ifdef __USE_GNU -# ifdef __PTHREAD_RWLOCK_INT_FLAGS_SHARED -# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \ - { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ - PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP } } -# else -# if __BYTE_ORDER == __LITTLE_ENDIAN -# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \ - { { 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, \ - 0, 0, 0, 0 } } -# else -# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \ - { { 0, 0, 0, 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,\ - 0 } } -# endif -# endif -# endif -#endif /* Unix98 or XOpen2K */ - - -/* Scheduler inheritance. */ -enum -{ - PTHREAD_INHERIT_SCHED, -#define PTHREAD_INHERIT_SCHED PTHREAD_INHERIT_SCHED - PTHREAD_EXPLICIT_SCHED -#define PTHREAD_EXPLICIT_SCHED PTHREAD_EXPLICIT_SCHED -}; - - -/* Scope handling. */ -enum -{ - PTHREAD_SCOPE_SYSTEM, -#define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_SYSTEM - PTHREAD_SCOPE_PROCESS -#define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_PROCESS -}; - - -/* Process shared or private flag. */ -enum -{ - PTHREAD_PROCESS_PRIVATE, -#define PTHREAD_PROCESS_PRIVATE PTHREAD_PROCESS_PRIVATE - PTHREAD_PROCESS_SHARED -#define PTHREAD_PROCESS_SHARED PTHREAD_PROCESS_SHARED -}; - - - -/* Conditional variable handling. */ -#define PTHREAD_COND_INITIALIZER { { 0, 0, 0, 0, 0, (void *) 0, 0, 0 } } - - -/* Cleanup buffers */ -struct _pthread_cleanup_buffer -{ - void (*__routine) (void *); /* Function to call. */ - void *__arg; /* Its argument. */ - int __canceltype; /* Saved cancellation type. */ - struct _pthread_cleanup_buffer *__prev; /* Chaining of cleanup functions. */ -}; - -/* Cancellation */ -enum -{ - PTHREAD_CANCEL_ENABLE, -#define PTHREAD_CANCEL_ENABLE PTHREAD_CANCEL_ENABLE - PTHREAD_CANCEL_DISABLE -#define PTHREAD_CANCEL_DISABLE PTHREAD_CANCEL_DISABLE -}; -enum -{ - PTHREAD_CANCEL_DEFERRED, -#define PTHREAD_CANCEL_DEFERRED PTHREAD_CANCEL_DEFERRED - PTHREAD_CANCEL_ASYNCHRONOUS -#define PTHREAD_CANCEL_ASYNCHRONOUS PTHREAD_CANCEL_ASYNCHRONOUS -}; -#define PTHREAD_CANCELED ((void *) -1) - - -/* Single execution handling. */ -#define PTHREAD_ONCE_INIT 0 - - -#ifdef __USE_XOPEN2K -/* Value returned by 'pthread_barrier_wait' for one of the threads after - the required number of threads have called this function. - -1 is distinct from 0 and all errno constants */ -# define PTHREAD_BARRIER_SERIAL_THREAD -1 -#endif - - -__BEGIN_DECLS - -/* Create a new thread, starting with execution of START-ROUTINE - getting passed ARG. Creation attributed come from ATTR. The new - handle is stored in *NEWTHREAD. */ -extern int pthread_create (pthread_t *__restrict __newthread, - const pthread_attr_t *__restrict __attr, - void *(*__start_routine) (void *), - void *__restrict __arg) __THROWNL __nonnull ((1, 3)); - -/* Terminate calling thread. - - The registered cleanup handlers are called via exception handling - so we cannot mark this function with __THROW.*/ -extern void pthread_exit (void *__retval) __attribute__ ((__noreturn__)); - -/* Make calling thread wait for termination of the thread TH. The - exit status of the thread is stored in *THREAD_RETURN, if THREAD_RETURN - is not NULL. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int pthread_join (pthread_t __th, void **__thread_return); - -#ifdef __USE_GNU -/* Check whether thread TH has terminated. If yes return the status of - the thread in *THREAD_RETURN, if THREAD_RETURN is not NULL. */ -extern int pthread_tryjoin_np (pthread_t __th, void **__thread_return) __THROW; - -/* Make calling thread wait for termination of the thread TH, but only - until TIMEOUT. The exit status of the thread is stored in - *THREAD_RETURN, if THREAD_RETURN is not NULL. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int pthread_timedjoin_np (pthread_t __th, void **__thread_return, - const struct timespec *__abstime); -#endif - -/* Indicate that the thread TH is never to be joined with PTHREAD_JOIN. - The resources of TH will therefore be freed immediately when it - terminates, instead of waiting for another thread to perform PTHREAD_JOIN - on it. */ -extern int pthread_detach (pthread_t __th) __THROW; - - -/* Obtain the identifier of the current thread. */ -extern pthread_t pthread_self (void) __THROW __attribute__ ((__const__)); - -/* Compare two thread identifiers. */ -extern int pthread_equal (pthread_t __thread1, pthread_t __thread2) - __THROW __attribute__ ((__const__)); - - -/* Thread attribute handling. */ - -/* Initialize thread attribute *ATTR with default attributes - (detachstate is PTHREAD_JOINABLE, scheduling policy is SCHED_OTHER, - no user-provided stack). */ -extern int pthread_attr_init (pthread_attr_t *__attr) __THROW __nonnull ((1)); - -/* Destroy thread attribute *ATTR. */ -extern int pthread_attr_destroy (pthread_attr_t *__attr) - __THROW __nonnull ((1)); - -/* Get detach state attribute. */ -extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr, - int *__detachstate) - __THROW __nonnull ((1, 2)); - -/* Set detach state attribute. */ -extern int pthread_attr_setdetachstate (pthread_attr_t *__attr, - int __detachstate) - __THROW __nonnull ((1)); - - -/* Get the size of the guard area created for stack overflow protection. */ -extern int pthread_attr_getguardsize (const pthread_attr_t *__attr, - size_t *__guardsize) - __THROW __nonnull ((1, 2)); - -/* Set the size of the guard area created for stack overflow protection. */ -extern int pthread_attr_setguardsize (pthread_attr_t *__attr, - size_t __guardsize) - __THROW __nonnull ((1)); - - -/* Return in *PARAM the scheduling parameters of *ATTR. */ -extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr, - struct sched_param *__restrict __param) - __THROW __nonnull ((1, 2)); - -/* Set scheduling parameters (priority, etc) in *ATTR according to PARAM. */ -extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr, - const struct sched_param *__restrict - __param) __THROW __nonnull ((1, 2)); - -/* Return in *POLICY the scheduling policy of *ATTR. */ -extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict - __attr, int *__restrict __policy) - __THROW __nonnull ((1, 2)); - -/* Set scheduling policy in *ATTR according to POLICY. */ -extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy) - __THROW __nonnull ((1)); - -/* Return in *INHERIT the scheduling inheritance mode of *ATTR. */ -extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict - __attr, int *__restrict __inherit) - __THROW __nonnull ((1, 2)); - -/* Set scheduling inheritance mode in *ATTR according to INHERIT. */ -extern int pthread_attr_setinheritsched (pthread_attr_t *__attr, - int __inherit) - __THROW __nonnull ((1)); - - -/* Return in *SCOPE the scheduling contention scope of *ATTR. */ -extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr, - int *__restrict __scope) - __THROW __nonnull ((1, 2)); - -/* Set scheduling contention scope in *ATTR according to SCOPE. */ -extern int pthread_attr_setscope (pthread_attr_t *__attr, int __scope) - __THROW __nonnull ((1)); - -/* Return the previously set address for the stack. */ -extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict - __attr, void **__restrict __stackaddr) - __THROW __nonnull ((1, 2)) __attribute_deprecated__; - -/* Set the starting address of the stack of the thread to be created. - Depending on whether the stack grows up or down the value must either - be higher or lower than all the address in the memory block. The - minimal size of the block must be PTHREAD_STACK_MIN. */ -extern int pthread_attr_setstackaddr (pthread_attr_t *__attr, - void *__stackaddr) - __THROW __nonnull ((1)) __attribute_deprecated__; - -/* Return the currently used minimal stack size. */ -extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict - __attr, size_t *__restrict __stacksize) - __THROW __nonnull ((1, 2)); - -/* Add information about the minimum stack size needed for the thread - to be started. This size must never be less than PTHREAD_STACK_MIN - and must also not exceed the system limits. */ -extern int pthread_attr_setstacksize (pthread_attr_t *__attr, - size_t __stacksize) - __THROW __nonnull ((1)); - -#ifdef __USE_XOPEN2K -/* Return the previously set address for the stack. */ -extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr, - void **__restrict __stackaddr, - size_t *__restrict __stacksize) - __THROW __nonnull ((1, 2, 3)); - -/* The following two interfaces are intended to replace the last two. They - require setting the address as well as the size since only setting the - address will make the implementation on some architectures impossible. */ -extern int pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr, - size_t __stacksize) __THROW __nonnull ((1)); -#endif - -#ifdef __USE_GNU -/* Thread created with attribute ATTR will be limited to run only on - the processors represented in CPUSET. */ -extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr, - size_t __cpusetsize, - const cpu_set_t *__cpuset) - __THROW __nonnull ((1, 3)); - -/* Get bit set in CPUSET representing the processors threads created with - ATTR can run on. */ -extern int pthread_attr_getaffinity_np (const pthread_attr_t *__attr, - size_t __cpusetsize, - cpu_set_t *__cpuset) - __THROW __nonnull ((1, 3)); - -/* Get the default attributes used by pthread_create in this process. */ -extern int pthread_getattr_default_np (pthread_attr_t *__attr) - __THROW __nonnull ((1)); - -/* Set the default attributes to be used by pthread_create in this - process. */ -extern int pthread_setattr_default_np (const pthread_attr_t *__attr) - __THROW __nonnull ((1)); - -/* Initialize thread attribute *ATTR with attributes corresponding to the - already running thread TH. It shall be called on uninitialized ATTR - and destroyed with pthread_attr_destroy when no longer needed. */ -extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr) - __THROW __nonnull ((2)); -#endif - - -/* Functions for scheduling control. */ - -/* Set the scheduling parameters for TARGET_THREAD according to POLICY - and *PARAM. */ -extern int pthread_setschedparam (pthread_t __target_thread, int __policy, - const struct sched_param *__param) - __THROW __nonnull ((3)); - -/* Return in *POLICY and *PARAM the scheduling parameters for TARGET_THREAD. */ -extern int pthread_getschedparam (pthread_t __target_thread, - int *__restrict __policy, - struct sched_param *__restrict __param) - __THROW __nonnull ((2, 3)); - -/* Set the scheduling priority for TARGET_THREAD. */ -extern int pthread_setschedprio (pthread_t __target_thread, int __prio) - __THROW; - - -#ifdef __USE_GNU -/* Get thread name visible in the kernel and its interfaces. */ -extern int pthread_getname_np (pthread_t __target_thread, char *__buf, - size_t __buflen) - __THROW __nonnull ((2)); - -/* Set thread name visible in the kernel and its interfaces. */ -extern int pthread_setname_np (pthread_t __target_thread, const char *__name) - __THROW __nonnull ((2)); -#endif - - -#ifdef __USE_UNIX98 -/* Determine level of concurrency. */ -extern int pthread_getconcurrency (void) __THROW; - -/* Set new concurrency level to LEVEL. */ -extern int pthread_setconcurrency (int __level) __THROW; -#endif - -#ifdef __USE_GNU -/* Yield the processor to another thread or process. - This function is similar to the POSIX `sched_yield' function but - might be differently implemented in the case of a m-on-n thread - implementation. */ -extern int pthread_yield (void) __THROW; - - -/* Limit specified thread TH to run only on the processors represented - in CPUSET. */ -extern int pthread_setaffinity_np (pthread_t __th, size_t __cpusetsize, - const cpu_set_t *__cpuset) - __THROW __nonnull ((3)); - -/* Get bit set in CPUSET representing the processors TH can run on. */ -extern int pthread_getaffinity_np (pthread_t __th, size_t __cpusetsize, - cpu_set_t *__cpuset) - __THROW __nonnull ((3)); -#endif - - -/* Functions for handling initialization. */ - -/* Guarantee that the initialization function INIT_ROUTINE will be called - only once, even if pthread_once is executed several times with the - same ONCE_CONTROL argument. ONCE_CONTROL must point to a static or - extern variable initialized to PTHREAD_ONCE_INIT. - - The initialization functions might throw exception which is why - this function is not marked with __THROW. */ -extern int pthread_once (pthread_once_t *__once_control, - void (*__init_routine) (void)) __nonnull ((1, 2)); - - -/* Functions for handling cancellation. - - Note that these functions are explicitly not marked to not throw an - exception in C++ code. If cancellation is implemented by unwinding - this is necessary to have the compiler generate the unwind information. */ - -/* Set cancelability state of current thread to STATE, returning old - state in *OLDSTATE if OLDSTATE is not NULL. */ -extern int pthread_setcancelstate (int __state, int *__oldstate); - -/* Set cancellation state of current thread to TYPE, returning the old - type in *OLDTYPE if OLDTYPE is not NULL. */ -extern int pthread_setcanceltype (int __type, int *__oldtype); - -/* Cancel THREAD immediately or at the next possibility. */ -extern int pthread_cancel (pthread_t __th); - -/* Test for pending cancellation for the current thread and terminate - the thread as per pthread_exit(PTHREAD_CANCELED) if it has been - cancelled. */ -extern void pthread_testcancel (void); - - -/* Cancellation handling with integration into exception handling. */ - -typedef struct -{ - struct - { - __jmp_buf __cancel_jmp_buf; - int __mask_was_saved; - } __cancel_jmp_buf[1]; - void *__pad[4]; -} __pthread_unwind_buf_t __attribute__ ((__aligned__)); - -/* No special attributes by default. */ -#ifndef __cleanup_fct_attribute -# define __cleanup_fct_attribute -#endif - - -/* Structure to hold the cleanup handler information. */ -struct __pthread_cleanup_frame -{ - void (*__cancel_routine) (void *); - void *__cancel_arg; - int __do_it; - int __cancel_type; -}; - -#if defined __GNUC__ && defined __EXCEPTIONS -# ifdef __cplusplus -/* Class to handle cancellation handler invocation. */ -class __pthread_cleanup_class -{ - void (*__cancel_routine) (void *); - void *__cancel_arg; - int __do_it; - int __cancel_type; - - public: - __pthread_cleanup_class (void (*__fct) (void *), void *__arg) - : __cancel_routine (__fct), __cancel_arg (__arg), __do_it (1) { } - ~__pthread_cleanup_class () { if (__do_it) __cancel_routine (__cancel_arg); } - void __setdoit (int __newval) { __do_it = __newval; } - void __defer () { pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, - &__cancel_type); } - void __restore () const { pthread_setcanceltype (__cancel_type, 0); } -}; - -/* Install a cleanup handler: ROUTINE will be called with arguments ARG - when the thread is canceled or calls pthread_exit. ROUTINE will also - be called with arguments ARG when the matching pthread_cleanup_pop - is executed with non-zero EXECUTE argument. - - pthread_cleanup_push and pthread_cleanup_pop are macros and must always - be used in matching pairs at the same nesting level of braces. */ -# define pthread_cleanup_push(routine, arg) \ - do { \ - __pthread_cleanup_class __clframe (routine, arg) - -/* Remove a cleanup handler installed by the matching pthread_cleanup_push. - If EXECUTE is non-zero, the handler function is called. */ -# define pthread_cleanup_pop(execute) \ - __clframe.__setdoit (execute); \ - } while (0) - -# ifdef __USE_GNU -/* Install a cleanup handler as pthread_cleanup_push does, but also - saves the current cancellation type and sets it to deferred - cancellation. */ -# define pthread_cleanup_push_defer_np(routine, arg) \ - do { \ - __pthread_cleanup_class __clframe (routine, arg); \ - __clframe.__defer () - -/* Remove a cleanup handler as pthread_cleanup_pop does, but also - restores the cancellation type that was in effect when the matching - pthread_cleanup_push_defer was called. */ -# define pthread_cleanup_pop_restore_np(execute) \ - __clframe.__restore (); \ - __clframe.__setdoit (execute); \ - } while (0) -# endif -# else -/* Function called to call the cleanup handler. As an extern inline - function the compiler is free to decide inlining the change when - needed or fall back on the copy which must exist somewhere - else. */ -__extern_inline void -__pthread_cleanup_routine (struct __pthread_cleanup_frame *__frame) -{ - if (__frame->__do_it) - __frame->__cancel_routine (__frame->__cancel_arg); -} - -/* Install a cleanup handler: ROUTINE will be called with arguments ARG - when the thread is canceled or calls pthread_exit. ROUTINE will also - be called with arguments ARG when the matching pthread_cleanup_pop - is executed with non-zero EXECUTE argument. - - pthread_cleanup_push and pthread_cleanup_pop are macros and must always - be used in matching pairs at the same nesting level of braces. */ -# define pthread_cleanup_push(routine, arg) \ - do { \ - struct __pthread_cleanup_frame __clframe \ - __attribute__ ((__cleanup__ (__pthread_cleanup_routine))) \ - = { .__cancel_routine = (routine), .__cancel_arg = (arg), \ - .__do_it = 1 }; - -/* Remove a cleanup handler installed by the matching pthread_cleanup_push. - If EXECUTE is non-zero, the handler function is called. */ -# define pthread_cleanup_pop(execute) \ - __clframe.__do_it = (execute); \ - } while (0) - -# ifdef __USE_GNU -/* Install a cleanup handler as pthread_cleanup_push does, but also - saves the current cancellation type and sets it to deferred - cancellation. */ -# define pthread_cleanup_push_defer_np(routine, arg) \ - do { \ - struct __pthread_cleanup_frame __clframe \ - __attribute__ ((__cleanup__ (__pthread_cleanup_routine))) \ - = { .__cancel_routine = (routine), .__cancel_arg = (arg), \ - .__do_it = 1 }; \ - (void) pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, \ - &__clframe.__cancel_type) - -/* Remove a cleanup handler as pthread_cleanup_pop does, but also - restores the cancellation type that was in effect when the matching - pthread_cleanup_push_defer was called. */ -# define pthread_cleanup_pop_restore_np(execute) \ - (void) pthread_setcanceltype (__clframe.__cancel_type, NULL); \ - __clframe.__do_it = (execute); \ - } while (0) -# endif -# endif -#else -/* Install a cleanup handler: ROUTINE will be called with arguments ARG - when the thread is canceled or calls pthread_exit. ROUTINE will also - be called with arguments ARG when the matching pthread_cleanup_pop - is executed with non-zero EXECUTE argument. - - pthread_cleanup_push and pthread_cleanup_pop are macros and must always - be used in matching pairs at the same nesting level of braces. */ -# define pthread_cleanup_push(routine, arg) \ - do { \ - __pthread_unwind_buf_t __cancel_buf; \ - void (*__cancel_routine) (void *) = (routine); \ - void *__cancel_arg = (arg); \ - int __not_first_call = __sigsetjmp ((struct __jmp_buf_tag *) (void *) \ - __cancel_buf.__cancel_jmp_buf, 0); \ - if (__glibc_unlikely (__not_first_call)) \ - { \ - __cancel_routine (__cancel_arg); \ - __pthread_unwind_next (&__cancel_buf); \ - /* NOTREACHED */ \ - } \ - \ - __pthread_register_cancel (&__cancel_buf); \ - do { -extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf) - __cleanup_fct_attribute; - -/* Remove a cleanup handler installed by the matching pthread_cleanup_push. - If EXECUTE is non-zero, the handler function is called. */ -# define pthread_cleanup_pop(execute) \ - do { } while (0);/* Empty to allow label before pthread_cleanup_pop. */\ - } while (0); \ - __pthread_unregister_cancel (&__cancel_buf); \ - if (execute) \ - __cancel_routine (__cancel_arg); \ - } while (0) -extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf) - __cleanup_fct_attribute; - -# ifdef __USE_GNU -/* Install a cleanup handler as pthread_cleanup_push does, but also - saves the current cancellation type and sets it to deferred - cancellation. */ -# define pthread_cleanup_push_defer_np(routine, arg) \ - do { \ - __pthread_unwind_buf_t __cancel_buf; \ - void (*__cancel_routine) (void *) = (routine); \ - void *__cancel_arg = (arg); \ - int __not_first_call = __sigsetjmp ((struct __jmp_buf_tag *) (void *) \ - __cancel_buf.__cancel_jmp_buf, 0); \ - if (__glibc_unlikely (__not_first_call)) \ - { \ - __cancel_routine (__cancel_arg); \ - __pthread_unwind_next (&__cancel_buf); \ - /* NOTREACHED */ \ - } \ - \ - __pthread_register_cancel_defer (&__cancel_buf); \ - do { -extern void __pthread_register_cancel_defer (__pthread_unwind_buf_t *__buf) - __cleanup_fct_attribute; - -/* Remove a cleanup handler as pthread_cleanup_pop does, but also - restores the cancellation type that was in effect when the matching - pthread_cleanup_push_defer was called. */ -# define pthread_cleanup_pop_restore_np(execute) \ - do { } while (0);/* Empty to allow label before pthread_cleanup_pop. */\ - } while (0); \ - __pthread_unregister_cancel_restore (&__cancel_buf); \ - if (execute) \ - __cancel_routine (__cancel_arg); \ - } while (0) -extern void __pthread_unregister_cancel_restore (__pthread_unwind_buf_t *__buf) - __cleanup_fct_attribute; -# endif - -/* Internal interface to initiate cleanup. */ -extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf) - __cleanup_fct_attribute __attribute__ ((__noreturn__)) -# ifndef SHARED - __attribute__ ((__weak__)) -# endif - ; -#endif - -/* Function used in the macros. */ -struct __jmp_buf_tag; -extern int __sigsetjmp (struct __jmp_buf_tag *__env, int __savemask) __THROWNL; - - -/* Mutex handling. */ - -/* Initialize a mutex. */ -extern int pthread_mutex_init (pthread_mutex_t *__mutex, - const pthread_mutexattr_t *__mutexattr) - __THROW __nonnull ((1)); - -/* Destroy a mutex. */ -extern int pthread_mutex_destroy (pthread_mutex_t *__mutex) - __THROW __nonnull ((1)); - -/* Try locking a mutex. */ -extern int pthread_mutex_trylock (pthread_mutex_t *__mutex) - __THROWNL __nonnull ((1)); - -/* Lock a mutex. */ -extern int pthread_mutex_lock (pthread_mutex_t *__mutex) - __THROWNL __nonnull ((1)); - -#ifdef __USE_XOPEN2K -/* Wait until lock becomes available, or specified time passes. */ -extern int pthread_mutex_timedlock (pthread_mutex_t *__restrict __mutex, - const struct timespec *__restrict - __abstime) __THROWNL __nonnull ((1, 2)); -#endif - -/* Unlock a mutex. */ -extern int pthread_mutex_unlock (pthread_mutex_t *__mutex) - __THROWNL __nonnull ((1)); - - -/* Get the priority ceiling of MUTEX. */ -extern int pthread_mutex_getprioceiling (const pthread_mutex_t * - __restrict __mutex, - int *__restrict __prioceiling) - __THROW __nonnull ((1, 2)); - -/* Set the priority ceiling of MUTEX to PRIOCEILING, return old - priority ceiling value in *OLD_CEILING. */ -extern int pthread_mutex_setprioceiling (pthread_mutex_t *__restrict __mutex, - int __prioceiling, - int *__restrict __old_ceiling) - __THROW __nonnull ((1, 3)); - - -#ifdef __USE_XOPEN2K8 -/* Declare the state protected by MUTEX as consistent. */ -extern int pthread_mutex_consistent (pthread_mutex_t *__mutex) - __THROW __nonnull ((1)); -# ifdef __USE_GNU -extern int pthread_mutex_consistent_np (pthread_mutex_t *__mutex) - __THROW __nonnull ((1)); -# endif -#endif - - -/* Functions for handling mutex attributes. */ - -/* Initialize mutex attribute object ATTR with default attributes - (kind is PTHREAD_MUTEX_TIMED_NP). */ -extern int pthread_mutexattr_init (pthread_mutexattr_t *__attr) - __THROW __nonnull ((1)); - -/* Destroy mutex attribute object ATTR. */ -extern int pthread_mutexattr_destroy (pthread_mutexattr_t *__attr) - __THROW __nonnull ((1)); - -/* Get the process-shared flag of the mutex attribute ATTR. */ -extern int pthread_mutexattr_getpshared (const pthread_mutexattr_t * - __restrict __attr, - int *__restrict __pshared) - __THROW __nonnull ((1, 2)); - -/* Set the process-shared flag of the mutex attribute ATTR. */ -extern int pthread_mutexattr_setpshared (pthread_mutexattr_t *__attr, - int __pshared) - __THROW __nonnull ((1)); - -#if defined __USE_UNIX98 || defined __USE_XOPEN2K8 -/* Return in *KIND the mutex kind attribute in *ATTR. */ -extern int pthread_mutexattr_gettype (const pthread_mutexattr_t *__restrict - __attr, int *__restrict __kind) - __THROW __nonnull ((1, 2)); - -/* Set the mutex kind attribute in *ATTR to KIND (either PTHREAD_MUTEX_NORMAL, - PTHREAD_MUTEX_RECURSIVE, PTHREAD_MUTEX_ERRORCHECK, or - PTHREAD_MUTEX_DEFAULT). */ -extern int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind) - __THROW __nonnull ((1)); -#endif - -/* Return in *PROTOCOL the mutex protocol attribute in *ATTR. */ -extern int pthread_mutexattr_getprotocol (const pthread_mutexattr_t * - __restrict __attr, - int *__restrict __protocol) - __THROW __nonnull ((1, 2)); - -/* Set the mutex protocol attribute in *ATTR to PROTOCOL (either - PTHREAD_PRIO_NONE, PTHREAD_PRIO_INHERIT, or PTHREAD_PRIO_PROTECT). */ -extern int pthread_mutexattr_setprotocol (pthread_mutexattr_t *__attr, - int __protocol) - __THROW __nonnull ((1)); - -/* Return in *PRIOCEILING the mutex prioceiling attribute in *ATTR. */ -extern int pthread_mutexattr_getprioceiling (const pthread_mutexattr_t * - __restrict __attr, - int *__restrict __prioceiling) - __THROW __nonnull ((1, 2)); - -/* Set the mutex prioceiling attribute in *ATTR to PRIOCEILING. */ -extern int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *__attr, - int __prioceiling) - __THROW __nonnull ((1)); - -#ifdef __USE_XOPEN2K -/* Get the robustness flag of the mutex attribute ATTR. */ -extern int pthread_mutexattr_getrobust (const pthread_mutexattr_t *__attr, - int *__robustness) - __THROW __nonnull ((1, 2)); -# ifdef __USE_GNU -extern int pthread_mutexattr_getrobust_np (const pthread_mutexattr_t *__attr, - int *__robustness) - __THROW __nonnull ((1, 2)); -# endif - -/* Set the robustness flag of the mutex attribute ATTR. */ -extern int pthread_mutexattr_setrobust (pthread_mutexattr_t *__attr, - int __robustness) - __THROW __nonnull ((1)); -# ifdef __USE_GNU -extern int pthread_mutexattr_setrobust_np (pthread_mutexattr_t *__attr, - int __robustness) - __THROW __nonnull ((1)); -# endif -#endif - - -#if defined __USE_UNIX98 || defined __USE_XOPEN2K -/* Functions for handling read-write locks. */ - -/* Initialize read-write lock RWLOCK using attributes ATTR, or use - the default values if later is NULL. */ -extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock, - const pthread_rwlockattr_t *__restrict - __attr) __THROW __nonnull ((1)); - -/* Destroy read-write lock RWLOCK. */ -extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock) - __THROW __nonnull ((1)); - -/* Acquire read lock for RWLOCK. */ -extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock) - __THROWNL __nonnull ((1)); - -/* Try to acquire read lock for RWLOCK. */ -extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock) - __THROWNL __nonnull ((1)); - -# ifdef __USE_XOPEN2K -/* Try to acquire read lock for RWLOCK or return after specfied time. */ -extern int pthread_rwlock_timedrdlock (pthread_rwlock_t *__restrict __rwlock, - const struct timespec *__restrict - __abstime) __THROWNL __nonnull ((1, 2)); -# endif - -/* Acquire write lock for RWLOCK. */ -extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock) - __THROWNL __nonnull ((1)); - -/* Try to acquire write lock for RWLOCK. */ -extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock) - __THROWNL __nonnull ((1)); - -# ifdef __USE_XOPEN2K -/* Try to acquire write lock for RWLOCK or return after specfied time. */ -extern int pthread_rwlock_timedwrlock (pthread_rwlock_t *__restrict __rwlock, - const struct timespec *__restrict - __abstime) __THROWNL __nonnull ((1, 2)); -# endif - -/* Unlock RWLOCK. */ -extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock) - __THROWNL __nonnull ((1)); - - -/* Functions for handling read-write lock attributes. */ - -/* Initialize attribute object ATTR with default values. */ -extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr) - __THROW __nonnull ((1)); - -/* Destroy attribute object ATTR. */ -extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr) - __THROW __nonnull ((1)); - -/* Return current setting of process-shared attribute of ATTR in PSHARED. */ -extern int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t * - __restrict __attr, - int *__restrict __pshared) - __THROW __nonnull ((1, 2)); - -/* Set process-shared attribute of ATTR to PSHARED. */ -extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr, - int __pshared) - __THROW __nonnull ((1)); - -/* Return current setting of reader/writer preference. */ -extern int pthread_rwlockattr_getkind_np (const pthread_rwlockattr_t * - __restrict __attr, - int *__restrict __pref) - __THROW __nonnull ((1, 2)); - -/* Set reader/write preference. */ -extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr, - int __pref) __THROW __nonnull ((1)); -#endif - - -/* Functions for handling conditional variables. */ - -/* Initialize condition variable COND using attributes ATTR, or use - the default values if later is NULL. */ -extern int pthread_cond_init (pthread_cond_t *__restrict __cond, - const pthread_condattr_t *__restrict __cond_attr) - __THROW __nonnull ((1)); - -/* Destroy condition variable COND. */ -extern int pthread_cond_destroy (pthread_cond_t *__cond) - __THROW __nonnull ((1)); - -/* Wake up one thread waiting for condition variable COND. */ -extern int pthread_cond_signal (pthread_cond_t *__cond) - __THROWNL __nonnull ((1)); - -/* Wake up all threads waiting for condition variables COND. */ -extern int pthread_cond_broadcast (pthread_cond_t *__cond) - __THROWNL __nonnull ((1)); - -/* Wait for condition variable COND to be signaled or broadcast. - MUTEX is assumed to be locked before. - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int pthread_cond_wait (pthread_cond_t *__restrict __cond, - pthread_mutex_t *__restrict __mutex) - __nonnull ((1, 2)); - -/* Wait for condition variable COND to be signaled or broadcast until - ABSTIME. MUTEX is assumed to be locked before. ABSTIME is an - absolute time specification; zero is the beginning of the epoch - (00:00:00 GMT, January 1, 1970). - - This function is a cancellation point and therefore not marked with - __THROW. */ -extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond, - pthread_mutex_t *__restrict __mutex, - const struct timespec *__restrict __abstime) - __nonnull ((1, 2, 3)); - -/* Functions for handling condition variable attributes. */ - -/* Initialize condition variable attribute ATTR. */ -extern int pthread_condattr_init (pthread_condattr_t *__attr) - __THROW __nonnull ((1)); - -/* Destroy condition variable attribute ATTR. */ -extern int pthread_condattr_destroy (pthread_condattr_t *__attr) - __THROW __nonnull ((1)); - -/* Get the process-shared flag of the condition variable attribute ATTR. */ -extern int pthread_condattr_getpshared (const pthread_condattr_t * - __restrict __attr, - int *__restrict __pshared) - __THROW __nonnull ((1, 2)); - -/* Set the process-shared flag of the condition variable attribute ATTR. */ -extern int pthread_condattr_setpshared (pthread_condattr_t *__attr, - int __pshared) __THROW __nonnull ((1)); - -#ifdef __USE_XOPEN2K -/* Get the clock selected for the condition variable attribute ATTR. */ -extern int pthread_condattr_getclock (const pthread_condattr_t * - __restrict __attr, - __clockid_t *__restrict __clock_id) - __THROW __nonnull ((1, 2)); - -/* Set the clock selected for the condition variable attribute ATTR. */ -extern int pthread_condattr_setclock (pthread_condattr_t *__attr, - __clockid_t __clock_id) - __THROW __nonnull ((1)); -#endif - - -#ifdef __USE_XOPEN2K -/* Functions to handle spinlocks. */ - -/* Initialize the spinlock LOCK. If PSHARED is nonzero the spinlock can - be shared between different processes. */ -extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared) - __THROW __nonnull ((1)); - -/* Destroy the spinlock LOCK. */ -extern int pthread_spin_destroy (pthread_spinlock_t *__lock) - __THROW __nonnull ((1)); - -/* Wait until spinlock LOCK is retrieved. */ -extern int pthread_spin_lock (pthread_spinlock_t *__lock) - __THROWNL __nonnull ((1)); - -/* Try to lock spinlock LOCK. */ -extern int pthread_spin_trylock (pthread_spinlock_t *__lock) - __THROWNL __nonnull ((1)); - -/* Release spinlock LOCK. */ -extern int pthread_spin_unlock (pthread_spinlock_t *__lock) - __THROWNL __nonnull ((1)); - - -/* Functions to handle barriers. */ - -/* Initialize BARRIER with the attributes in ATTR. The barrier is - opened when COUNT waiters arrived. */ -extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier, - const pthread_barrierattr_t *__restrict - __attr, unsigned int __count) - __THROW __nonnull ((1)); - -/* Destroy a previously dynamically initialized barrier BARRIER. */ -extern int pthread_barrier_destroy (pthread_barrier_t *__barrier) - __THROW __nonnull ((1)); - -/* Wait on barrier BARRIER. */ -extern int pthread_barrier_wait (pthread_barrier_t *__barrier) - __THROWNL __nonnull ((1)); - - -/* Initialize barrier attribute ATTR. */ -extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr) - __THROW __nonnull ((1)); - -/* Destroy previously dynamically initialized barrier attribute ATTR. */ -extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr) - __THROW __nonnull ((1)); - -/* Get the process-shared flag of the barrier attribute ATTR. */ -extern int pthread_barrierattr_getpshared (const pthread_barrierattr_t * - __restrict __attr, - int *__restrict __pshared) - __THROW __nonnull ((1, 2)); - -/* Set the process-shared flag of the barrier attribute ATTR. */ -extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr, - int __pshared) - __THROW __nonnull ((1)); -#endif - - -/* Functions for handling thread-specific data. */ - -/* Create a key value identifying a location in the thread-specific - data area. Each thread maintains a distinct thread-specific data - area. DESTR_FUNCTION, if non-NULL, is called with the value - associated to that key when the key is destroyed. - DESTR_FUNCTION is not called if the value associated is NULL when - the key is destroyed. */ -extern int pthread_key_create (pthread_key_t *__key, - void (*__destr_function) (void *)) - __THROW __nonnull ((1)); - -/* Destroy KEY. */ -extern int pthread_key_delete (pthread_key_t __key) __THROW; - -/* Return current value of the thread-specific data slot identified by KEY. */ -extern void *pthread_getspecific (pthread_key_t __key) __THROW; - -/* Store POINTER in the thread-specific data slot identified by KEY. */ -extern int pthread_setspecific (pthread_key_t __key, - const void *__pointer) __THROW ; - - -#ifdef __USE_XOPEN2K -/* Get ID of CPU-time clock for thread THREAD_ID. */ -extern int pthread_getcpuclockid (pthread_t __thread_id, - __clockid_t *__clock_id) - __THROW __nonnull ((2)); -#endif - - -/* Install handlers to be called when a new process is created with FORK. - The PREPARE handler is called in the parent process just before performing - FORK. The PARENT handler is called in the parent process just after FORK. - The CHILD handler is called in the child process. Each of the three - handlers can be NULL, meaning that no handler needs to be called at that - point. - PTHREAD_ATFORK can be called several times, in which case the PREPARE - handlers are called in LIFO order (last added with PTHREAD_ATFORK, - first called before FORK), and the PARENT and CHILD handlers are called - in FIFO (first added, first called). */ - -extern int pthread_atfork (void (*__prepare) (void), - void (*__parent) (void), - void (*__child) (void)) __THROW; - - -#ifdef __USE_EXTERN_INLINES -/* Optimizations. */ -__extern_inline int -__NTH (pthread_equal (pthread_t __thread1, pthread_t __thread2)) -{ - return __thread1 == __thread2; -} -#endif - -__END_DECLS - -#endif /* pthread.h */ diff --git a/nptl/sysdeps/pthread/pthread_sigmask.c b/nptl/sysdeps/pthread/pthread_sigmask.c deleted file mode 100644 index 21f0665460..0000000000 --- a/nptl/sysdeps/pthread/pthread_sigmask.c +++ /dev/null @@ -1,57 +0,0 @@ -/* Copyright (C) 2002-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , 2002. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include -#include -#include - - -int -pthread_sigmask (how, newmask, oldmask) - int how; - const sigset_t *newmask; - sigset_t *oldmask; -{ - sigset_t local_newmask; - - /* The only thing we have to make sure here is that SIGCANCEL and - SIGSETXID is not blocked. */ - if (newmask != NULL - && (__builtin_expect (__sigismember (newmask, SIGCANCEL), 0) - || __builtin_expect (__sigismember (newmask, SIGSETXID), 0))) - { - local_newmask = *newmask; - __sigdelset (&local_newmask, SIGCANCEL); - __sigdelset (&local_newmask, SIGSETXID); - newmask = &local_newmask; - } - -#ifdef INTERNAL_SYSCALL - /* We know that realtime signals are available if NPTL is used. */ - INTERNAL_SYSCALL_DECL (err); - int result = INTERNAL_SYSCALL (rt_sigprocmask, err, 4, how, newmask, - oldmask, _NSIG / 8); - - return (INTERNAL_SYSCALL_ERROR_P (result, err) - ? INTERNAL_SYSCALL_ERRNO (result, err) - : 0); -#else - return sigprocmask (how, newmask, oldmask) == -1 ? errno : 0; -#endif -} diff --git a/nptl/sysdeps/pthread/setxid.h b/nptl/sysdeps/pthread/setxid.h deleted file mode 100644 index 76c88e0feb..0000000000 --- a/nptl/sysdeps/pthread/setxid.h +++ /dev/null @@ -1,62 +0,0 @@ -/* Copyright (C) 2004-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include -#include - -#define __SETXID_1(cmd, arg1) \ - cmd.id[0] = (long int) arg1 -#define __SETXID_2(cmd, arg1, arg2) \ - __SETXID_1 (cmd, arg1); cmd.id[1] = (long int) arg2 -#define __SETXID_3(cmd, arg1, arg2, arg3) \ - __SETXID_2 (cmd, arg1, arg2); cmd.id[2] = (long int) arg3 - -#ifdef SINGLE_THREAD -# define INLINE_SETXID_SYSCALL(name, nr, args...) \ - INLINE_SYSCALL (name, nr, args) -#elif defined SHARED -# define INLINE_SETXID_SYSCALL(name, nr, args...) \ - ({ \ - int __result; \ - if (__builtin_expect (__libc_pthread_functions_init, 0)) \ - { \ - struct xid_command __cmd; \ - __cmd.syscall_no = __NR_##name; \ - __SETXID_##nr (__cmd, args); \ - __result = PTHFCT_CALL (ptr__nptl_setxid, (&__cmd)); \ - } \ - else \ - __result = INLINE_SYSCALL (name, nr, args); \ - __result; \ - }) -#else -# define INLINE_SETXID_SYSCALL(name, nr, args...) \ - ({ \ - extern __typeof (__nptl_setxid) __nptl_setxid __attribute__((weak));\ - int __result; \ - if (__glibc_unlikely (__nptl_setxid != NULL)) \ - { \ - struct xid_command __cmd; \ - __cmd.syscall_no = __NR_##name; \ - __SETXID_##nr (__cmd, args); \ - __result =__nptl_setxid (&__cmd); \ - } \ - else \ - __result = INLINE_SYSCALL (name, nr, args); \ - __result; \ - }) -#endif diff --git a/nptl/sysdeps/pthread/sigfillset.c b/nptl/sysdeps/pthread/sigfillset.c deleted file mode 100644 index 9ab12c7a3e..0000000000 --- a/nptl/sysdeps/pthread/sigfillset.c +++ /dev/null @@ -1,20 +0,0 @@ -/* Copyright (C) 2003-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - . */ - -#include - -#include diff --git a/nptl/sysdeps/pthread/tcb-offsets.h b/nptl/sysdeps/pthread/tcb-offsets.h deleted file mode 100644 index 3fe13702ea..0000000000 --- a/nptl/sysdeps/pthread/tcb-offsets.h +++ /dev/null @@ -1 +0,0 @@ -/* This is overridden by generated tcb-offsets.h on arches which need it. */ diff --git a/nptl/sysdeps/pthread/timer_create.c b/nptl/sysdeps/pthread/timer_create.c deleted file mode 100644 index 461d28e353..0000000000 --- a/nptl/sysdeps/pthread/timer_create.c +++ /dev/null @@ -1,169 +0,0 @@ -/* Copyright (C) 2000-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Kaz Kylheku . - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include -#include -#include -#include - -#include "posix-timer.h" - - -/* Create new per-process timer using CLOCK. */ -int -timer_create (clock_id, evp, timerid) - clockid_t clock_id; - struct sigevent *evp; - timer_t *timerid; -{ - int retval = -1; - struct timer_node *newtimer = NULL; - struct thread_node *thread = NULL; - - if (0 -#if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0 - || clock_id == CLOCK_PROCESS_CPUTIME_ID -#endif -#if defined _POSIX_THREAD_CPUTIME && _POSIX_THREAD_CPUTIME >= 0 - || clock_id == CLOCK_THREAD_CPUTIME_ID -#endif - ) - { - /* We don't allow timers for CPU clocks. At least not in the - moment. */ - __set_errno (ENOTSUP); - return -1; - } - - if (clock_id != CLOCK_REALTIME) - { - __set_errno (EINVAL); - return -1; - } - - pthread_once (&__timer_init_once_control, __timer_init_once); - - if (__timer_init_failed) - { - __set_errno (ENOMEM); - return -1; - } - - pthread_mutex_lock (&__timer_mutex); - - newtimer = __timer_alloc (); - if (__glibc_unlikely (newtimer == NULL)) - { - __set_errno (EAGAIN); - goto unlock_bail; - } - - if (evp != NULL) - newtimer->event = *evp; - else - { - newtimer->event.sigev_notify = SIGEV_SIGNAL; - newtimer->event.sigev_signo = SIGALRM; - newtimer->event.sigev_value.sival_ptr = timer_ptr2id (newtimer); - newtimer->event.sigev_notify_function = 0; - } - - newtimer->event.sigev_notify_attributes = &newtimer->attr; - newtimer->creator_pid = getpid (); - - switch (__builtin_expect (newtimer->event.sigev_notify, SIGEV_SIGNAL)) - { - case SIGEV_NONE: - case SIGEV_SIGNAL: - /* We have a global thread for delivering timed signals. - If it is not running, try to start it up. */ - thread = &__timer_signal_thread_rclk; - if (! thread->exists) - { - if (__builtin_expect (__timer_thread_start (thread), - 1) < 0) - { - __set_errno (EAGAIN); - goto unlock_bail; - } - } - break; - - case SIGEV_THREAD: - /* Copy over thread attributes or set up default ones. */ - if (evp->sigev_notify_attributes) - newtimer->attr = *(pthread_attr_t *) evp->sigev_notify_attributes; - else - pthread_attr_init (&newtimer->attr); - - /* Ensure thread attributes call for deatched thread. */ - pthread_attr_setdetachstate (&newtimer->attr, PTHREAD_CREATE_DETACHED); - - /* Try to find existing thread having the right attributes. */ - thread = __timer_thread_find_matching (&newtimer->attr, clock_id); - - /* If no existing thread has these attributes, try to allocate one. */ - if (thread == NULL) - thread = __timer_thread_alloc (&newtimer->attr, clock_id); - - /* Out of luck; no threads are available. */ - if (__glibc_unlikely (thread == NULL)) - { - __set_errno (EAGAIN); - goto unlock_bail; - } - - /* If the thread is not running already, try to start it. */ - if (! thread->exists - && __builtin_expect (! __timer_thread_start (thread), 0)) - { - __set_errno (EAGAIN); - goto unlock_bail; - } - break; - - default: - __set_errno (EINVAL); - goto unlock_bail; - } - - newtimer->clock = clock_id; - newtimer->abstime = 0; - newtimer->armed = 0; - newtimer->thread = thread; - - *timerid = timer_ptr2id (newtimer); - retval = 0; - - if (__builtin_expect (retval, 0) == -1) - { - unlock_bail: - if (thread != NULL) - __timer_thread_dealloc (thread); - if (newtimer != NULL) - { - timer_delref (newtimer); - __timer_dealloc (newtimer); - } - } - - pthread_mutex_unlock (&__timer_mutex); - - return retval; -} diff --git a/nptl/sysdeps/pthread/timer_delete.c b/nptl/sysdeps/pthread/timer_delete.c deleted file mode 100644 index 99e4cc180e..0000000000 --- a/nptl/sysdeps/pthread/timer_delete.c +++ /dev/null @@ -1,69 +0,0 @@ -/* Copyright (C) 2000-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Kaz Kylheku . - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include -#include -#include - -#include "posix-timer.h" - - -/* Delete timer TIMERID. */ -int -timer_delete (timerid) - timer_t timerid; -{ - struct timer_node *timer; - int retval = -1; - - pthread_mutex_lock (&__timer_mutex); - - timer = timer_id2ptr (timerid); - if (! timer_valid (timer)) - /* Invalid timer ID or the timer is not in use. */ - __set_errno (EINVAL); - else - { - if (timer->armed && timer->thread != NULL) - { - struct thread_node *thread = timer->thread; - assert (thread != NULL); - - /* If thread is cancelled while waiting for handler to terminate, - the mutex is unlocked and timer_delete is aborted. */ - pthread_cleanup_push (__timer_mutex_cancel_handler, &__timer_mutex); - - /* If timer is currently being serviced, wait for it to finish. */ - while (thread->current_timer == timer) - pthread_cond_wait (&thread->cond, &__timer_mutex); - - pthread_cleanup_pop (0); - } - - /* Remove timer from whatever queue it may be on and deallocate it. */ - timer->inuse = TIMER_DELETED; - list_unlink_ip (&timer->links); - timer_delref (timer); - retval = 0; - } - - pthread_mutex_unlock (&__timer_mutex); - - return retval; -} diff --git a/nptl/sysdeps/pthread/timer_getoverr.c b/nptl/sysdeps/pthread/timer_getoverr.c deleted file mode 100644 index 159ebf27f0..0000000000 --- a/nptl/sysdeps/pthread/timer_getoverr.c +++ /dev/null @@ -1,44 +0,0 @@ -/* Copyright (C) 2000-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Kaz Kylheku . - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include -#include - -#include "posix-timer.h" - - -/* Get expiration overrun for timer TIMERID. */ -int -timer_getoverrun (timerid) - timer_t timerid; -{ - struct timer_node *timer; - int retval = -1; - - pthread_mutex_lock (&__timer_mutex); - - if (! timer_valid (timer = timer_id2ptr (timerid))) - __set_errno (EINVAL); - else - retval = timer->overrun_count; - - pthread_mutex_unlock (&__timer_mutex); - - return retval; -} diff --git a/nptl/sysdeps/pthread/timer_gettime.c b/nptl/sysdeps/pthread/timer_gettime.c deleted file mode 100644 index 1e0ea69ad0..0000000000 --- a/nptl/sysdeps/pthread/timer_gettime.c +++ /dev/null @@ -1,76 +0,0 @@ -/* Copyright (C) 2000-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Kaz Kylheku . - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include -#include - -#include "posix-timer.h" - - -/* Get current value of timer TIMERID and store it in VLAUE. */ -int -timer_gettime (timerid, value) - timer_t timerid; - struct itimerspec *value; -{ - struct timer_node *timer; - struct timespec now, expiry; - int retval = -1, armed = 0, valid; - clock_t clock = 0; - - pthread_mutex_lock (&__timer_mutex); - - timer = timer_id2ptr (timerid); - valid = timer_valid (timer); - - if (valid) { - armed = timer->armed; - expiry = timer->expirytime; - clock = timer->clock; - value->it_interval = timer->value.it_interval; - } - - pthread_mutex_unlock (&__timer_mutex); - - if (valid) - { - if (armed) - { - clock_gettime (clock, &now); - if (timespec_compare (&now, &expiry) < 0) - timespec_sub (&value->it_value, &expiry, &now); - else - { - value->it_value.tv_sec = 0; - value->it_value.tv_nsec = 0; - } - } - else - { - value->it_value.tv_sec = 0; - value->it_value.tv_nsec = 0; - } - - retval = 0; - } - else - __set_errno (EINVAL); - - return retval; -} diff --git a/nptl/sysdeps/pthread/timer_routines.c b/nptl/sysdeps/pthread/timer_routines.c deleted file mode 100644 index ce1aa417cd..0000000000 --- a/nptl/sysdeps/pthread/timer_routines.c +++ /dev/null @@ -1,577 +0,0 @@ -/* Helper code for POSIX timer implementation on NPTL. - Copyright (C) 2000-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Kaz Kylheku . - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "posix-timer.h" -#include - - -/* Number of threads used. */ -#define THREAD_MAXNODES 16 - -/* Array containing the descriptors for the used threads. */ -static struct thread_node thread_array[THREAD_MAXNODES]; - -/* Static array with the structures for all the timers. */ -struct timer_node __timer_array[TIMER_MAX]; - -/* Global lock to protect operation on the lists. */ -pthread_mutex_t __timer_mutex = PTHREAD_MUTEX_INITIALIZER; - -/* Variable to protext initialization. */ -pthread_once_t __timer_init_once_control = PTHREAD_ONCE_INIT; - -/* Nonzero if initialization of timer implementation failed. */ -int __timer_init_failed; - -/* Node for the thread used to deliver signals. */ -struct thread_node __timer_signal_thread_rclk; - -/* Lists to keep free and used timers and threads. */ -struct list_links timer_free_list; -struct list_links thread_free_list; -struct list_links thread_active_list; - - -#ifdef __NR_rt_sigqueueinfo -extern int __syscall_rt_sigqueueinfo (int, int, siginfo_t *); -#endif - - -/* List handling functions. */ -static inline void -list_init (struct list_links *list) -{ - list->next = list->prev = list; -} - -static inline void -list_append (struct list_links *list, struct list_links *newp) -{ - newp->prev = list->prev; - newp->next = list; - list->prev->next = newp; - list->prev = newp; -} - -static inline void -list_insbefore (struct list_links *list, struct list_links *newp) -{ - list_append (list, newp); -} - -/* - * Like list_unlink_ip, except that calling it on a node that - * is already unlinked is disastrous rather than a noop. - */ - -static inline void -list_unlink (struct list_links *list) -{ - struct list_links *lnext = list->next, *lprev = list->prev; - - lnext->prev = lprev; - lprev->next = lnext; -} - -static inline struct list_links * -list_first (struct list_links *list) -{ - return list->next; -} - -static inline struct list_links * -list_null (struct list_links *list) -{ - return list; -} - -static inline struct list_links * -list_next (struct list_links *list) -{ - return list->next; -} - -static inline int -list_isempty (struct list_links *list) -{ - return list->next == list; -} - - -/* Functions build on top of the list functions. */ -static inline struct thread_node * -thread_links2ptr (struct list_links *list) -{ - return (struct thread_node *) ((char *) list - - offsetof (struct thread_node, links)); -} - -static inline struct timer_node * -timer_links2ptr (struct list_links *list) -{ - return (struct timer_node *) ((char *) list - - offsetof (struct timer_node, links)); -} - - -/* Initialize a newly allocated thread structure. */ -static void -thread_init (struct thread_node *thread, const pthread_attr_t *attr, clockid_t clock_id) -{ - if (attr != NULL) - thread->attr = *attr; - else - { - pthread_attr_init (&thread->attr); - pthread_attr_setdetachstate (&thread->attr, PTHREAD_CREATE_DETACHED); - } - - thread->exists = 0; - list_init (&thread->timer_queue); - pthread_cond_init (&thread->cond, 0); - thread->current_timer = 0; - thread->captured = pthread_self (); - thread->clock_id = clock_id; -} - - -/* Initialize the global lists, and acquire global resources. Error - reporting is done by storing a non-zero value to the global variable - timer_init_failed. */ -static void -init_module (void) -{ - int i; - - list_init (&timer_free_list); - list_init (&thread_free_list); - list_init (&thread_active_list); - - for (i = 0; i < TIMER_MAX; ++i) - { - list_append (&timer_free_list, &__timer_array[i].links); - __timer_array[i].inuse = TIMER_FREE; - } - - for (i = 0; i < THREAD_MAXNODES; ++i) - list_append (&thread_free_list, &thread_array[i].links); - - thread_init (&__timer_signal_thread_rclk, 0, CLOCK_REALTIME); -} - - -/* This is a handler executed in a child process after a fork() - occurs. It reinitializes the module, resetting all of the data - structures to their initial state. The mutex is initialized in - case it was locked in the parent process. */ -static void -reinit_after_fork (void) -{ - init_module (); - pthread_mutex_init (&__timer_mutex, 0); -} - - -/* Called once form pthread_once in timer_init. This initializes the - module and ensures that reinit_after_fork will be executed in any - child process. */ -void -__timer_init_once (void) -{ - init_module (); - pthread_atfork (0, 0, reinit_after_fork); -} - - -/* Deinitialize a thread that is about to be deallocated. */ -static void -thread_deinit (struct thread_node *thread) -{ - assert (list_isempty (&thread->timer_queue)); - pthread_cond_destroy (&thread->cond); -} - - -/* Allocate a thread structure from the global free list. Global - mutex lock must be held by caller. The thread is moved to - the active list. */ -struct thread_node * -__timer_thread_alloc (const pthread_attr_t *desired_attr, clockid_t clock_id) -{ - struct list_links *node = list_first (&thread_free_list); - - if (node != list_null (&thread_free_list)) - { - struct thread_node *thread = thread_links2ptr (node); - list_unlink (node); - thread_init (thread, desired_attr, clock_id); - list_append (&thread_active_list, node); - return thread; - } - - return 0; -} - - -/* Return a thread structure to the global free list. Global lock - must be held by caller. */ -void -__timer_thread_dealloc (struct thread_node *thread) -{ - thread_deinit (thread); - list_unlink (&thread->links); - list_append (&thread_free_list, &thread->links); -} - - -/* Each of our threads which terminates executes this cleanup - handler. We never terminate threads ourselves; if a thread gets here - it means that the evil application has killed it. If the thread has - timers, these require servicing and so we must hire a replacement - thread right away. We must also unblock another thread that may - have been waiting for this thread to finish servicing a timer (see - timer_delete()). */ - -static void -thread_cleanup (void *val) -{ - if (val != NULL) - { - struct thread_node *thread = val; - - /* How did the signal thread get killed? */ - assert (thread != &__timer_signal_thread_rclk); - - pthread_mutex_lock (&__timer_mutex); - - thread->exists = 0; - - /* We are no longer processing a timer event. */ - thread->current_timer = 0; - - if (list_isempty (&thread->timer_queue)) - __timer_thread_dealloc (thread); - else - (void) __timer_thread_start (thread); - - pthread_mutex_unlock (&__timer_mutex); - - /* Unblock potentially blocked timer_delete(). */ - pthread_cond_broadcast (&thread->cond); - } -} - - -/* Handle a timer which is supposed to go off now. */ -static void -thread_expire_timer (struct thread_node *self, struct timer_node *timer) -{ - self->current_timer = timer; /* Lets timer_delete know timer is running. */ - - pthread_mutex_unlock (&__timer_mutex); - - switch (__builtin_expect (timer->event.sigev_notify, SIGEV_SIGNAL)) - { - case SIGEV_NONE: - break; - - case SIGEV_SIGNAL: -#ifdef __NR_rt_sigqueueinfo - { - siginfo_t info; - - /* First, clear the siginfo_t structure, so that we don't pass our - stack content to other tasks. */ - memset (&info, 0, sizeof (siginfo_t)); - /* We must pass the information about the data in a siginfo_t - value. */ - info.si_signo = timer->event.sigev_signo; - info.si_code = SI_TIMER; - info.si_pid = timer->creator_pid; - info.si_uid = getuid (); - info.si_value = timer->event.sigev_value; - - INLINE_SYSCALL (rt_sigqueueinfo, 3, info.si_pid, info.si_signo, &info); - } -#else - if (pthread_kill (self->captured, timer->event.sigev_signo) != 0) - { - if (pthread_kill (self->id, timer->event.sigev_signo) != 0) - abort (); - } -#endif - break; - - case SIGEV_THREAD: - timer->event.sigev_notify_function (timer->event.sigev_value); - break; - - default: - assert (! "unknown event"); - break; - } - - pthread_mutex_lock (&__timer_mutex); - - self->current_timer = 0; - - pthread_cond_broadcast (&self->cond); -} - - -/* Thread function; executed by each timer thread. The job of this - function is to wait on the thread's timer queue and expire the - timers in chronological order as close to their scheduled time as - possible. */ -static void -__attribute__ ((noreturn)) -thread_func (void *arg) -{ - struct thread_node *self = arg; - - /* Register cleanup handler, in case rogue application terminates - this thread. (This cannot happen to __timer_signal_thread, which - doesn't invoke application callbacks). */ - - pthread_cleanup_push (thread_cleanup, self); - - pthread_mutex_lock (&__timer_mutex); - - while (1) - { - struct list_links *first; - struct timer_node *timer = NULL; - - /* While the timer queue is not empty, inspect the first node. */ - first = list_first (&self->timer_queue); - if (first != list_null (&self->timer_queue)) - { - struct timespec now; - - timer = timer_links2ptr (first); - - /* This assumes that the elements of the list of one thread - are all for the same clock. */ - clock_gettime (timer->clock, &now); - - while (1) - { - /* If the timer is due or overdue, remove it from the queue. - If it's a periodic timer, re-compute its new time and - requeue it. Either way, perform the timer expiry. */ - if (timespec_compare (&now, &timer->expirytime) < 0) - break; - - list_unlink_ip (first); - - if (__builtin_expect (timer->value.it_interval.tv_sec, 0) != 0 - || timer->value.it_interval.tv_nsec != 0) - { - timer->overrun_count = 0; - timespec_add (&timer->expirytime, &timer->expirytime, - &timer->value.it_interval); - while (timespec_compare (&timer->expirytime, &now) < 0) - { - timespec_add (&timer->expirytime, &timer->expirytime, - &timer->value.it_interval); - if (timer->overrun_count < DELAYTIMER_MAX) - ++timer->overrun_count; - } - __timer_thread_queue_timer (self, timer); - } - - thread_expire_timer (self, timer); - - first = list_first (&self->timer_queue); - if (first == list_null (&self->timer_queue)) - break; - - timer = timer_links2ptr (first); - } - } - - /* If the queue is not empty, wait until the expiry time of the - first node. Otherwise wait indefinitely. Insertions at the - head of the queue must wake up the thread by broadcasting - this condition variable. */ - if (timer != NULL) - pthread_cond_timedwait (&self->cond, &__timer_mutex, - &timer->expirytime); - else - pthread_cond_wait (&self->cond, &__timer_mutex); - } - /* This macro will never be executed since the while loop loops - forever - but we have to add it for proper nesting. */ - pthread_cleanup_pop (1); -} - - -/* Enqueue a timer in wakeup order in the thread's timer queue. - Returns 1 if the timer was inserted at the head of the queue, - causing the queue's next wakeup time to change. */ - -int -__timer_thread_queue_timer (struct thread_node *thread, - struct timer_node *insert) -{ - struct list_links *iter; - int athead = 1; - - for (iter = list_first (&thread->timer_queue); - iter != list_null (&thread->timer_queue); - iter = list_next (iter)) - { - struct timer_node *timer = timer_links2ptr (iter); - - if (timespec_compare (&insert->expirytime, &timer->expirytime) < 0) - break; - athead = 0; - } - - list_insbefore (iter, &insert->links); - return athead; -} - - -/* Start a thread and associate it with the given thread node. Global - lock must be held by caller. */ -int -__timer_thread_start (struct thread_node *thread) -{ - int retval = 1; - - assert (!thread->exists); - thread->exists = 1; - - if (pthread_create (&thread->id, &thread->attr, - (void *(*) (void *)) thread_func, thread) != 0) - { - thread->exists = 0; - retval = -1; - } - - return retval; -} - - -void -__timer_thread_wakeup (struct thread_node *thread) -{ - pthread_cond_broadcast (&thread->cond); -} - - -/* Compare two pthread_attr_t thread attributes for exact equality. - Returns 1 if they are equal, otherwise zero if they are not equal - or contain illegal values. This version is NPTL-specific for - performance reason. One could use the access functions to get the - values of all the fields of the attribute structure. */ -static int -thread_attr_compare (const pthread_attr_t *left, const pthread_attr_t *right) -{ - struct pthread_attr *ileft = (struct pthread_attr *) left; - struct pthread_attr *iright = (struct pthread_attr *) right; - - return (ileft->flags == iright->flags - && ileft->schedpolicy == iright->schedpolicy - && (ileft->schedparam.sched_priority - == iright->schedparam.sched_priority) - && ileft->guardsize == iright->guardsize - && ileft->stackaddr == iright->stackaddr - && ileft->stacksize == iright->stacksize - && ((ileft->cpuset == NULL && iright->cpuset == NULL) - || (ileft->cpuset != NULL && iright->cpuset != NULL - && ileft->cpusetsize == iright->cpusetsize - && memcmp (ileft->cpuset, iright->cpuset, - ileft->cpusetsize) == 0))); -} - - -/* Search the list of active threads and find one which has matching - attributes. Global mutex lock must be held by caller. */ -struct thread_node * -__timer_thread_find_matching (const pthread_attr_t *desired_attr, - clockid_t desired_clock_id) -{ - struct list_links *iter = list_first (&thread_active_list); - - while (iter != list_null (&thread_active_list)) - { - struct thread_node *candidate = thread_links2ptr (iter); - - if (thread_attr_compare (desired_attr, &candidate->attr) - && desired_clock_id == candidate->clock_id) - return candidate; - - iter = list_next (iter); - } - - return NULL; -} - - -/* Grab a free timer structure from the global free list. The global - lock must be held by the caller. */ -struct timer_node * -__timer_alloc (void) -{ - struct list_links *node = list_first (&timer_free_list); - - if (node != list_null (&timer_free_list)) - { - struct timer_node *timer = timer_links2ptr (node); - list_unlink_ip (node); - timer->inuse = TIMER_INUSE; - timer->refcount = 1; - return timer; - } - - return NULL; -} - - -/* Return a timer structure to the global free list. The global lock - must be held by the caller. */ -void -__timer_dealloc (struct timer_node *timer) -{ - assert (timer->refcount == 0); - timer->thread = NULL; /* Break association between timer and thread. */ - timer->inuse = TIMER_FREE; - list_append (&timer_free_list, &timer->links); -} - - -/* Thread cancellation handler which unlocks a mutex. */ -void -__timer_mutex_cancel_handler (void *arg) -{ - pthread_mutex_unlock (arg); -} diff --git a/nptl/sysdeps/pthread/timer_settime.c b/nptl/sysdeps/pthread/timer_settime.c deleted file mode 100644 index 5d3c1664f7..0000000000 --- a/nptl/sysdeps/pthread/timer_settime.c +++ /dev/null @@ -1,136 +0,0 @@ -/* Copyright (C) 2000-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Kaz Kylheku . - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include -#include - -#include "posix-timer.h" - - -/* Set timer TIMERID to VALUE, returning old value in OVLAUE. */ -int -timer_settime (timerid, flags, value, ovalue) - timer_t timerid; - int flags; - const struct itimerspec *value; - struct itimerspec *ovalue; -{ - struct timer_node *timer; - struct thread_node *thread = NULL; - struct timespec now; - int have_now = 0, need_wakeup = 0; - int retval = -1; - - timer = timer_id2ptr (timerid); - if (timer == NULL) - { - __set_errno (EINVAL); - goto bail; - } - - if (value->it_interval.tv_nsec < 0 - || value->it_interval.tv_nsec >= 1000000000 - || value->it_value.tv_nsec < 0 - || value->it_value.tv_nsec >= 1000000000) - { - __set_errno (EINVAL); - goto bail; - } - - /* Will need to know current time since this is a relative timer; - might as well make the system call outside of the lock now! */ - - if ((flags & TIMER_ABSTIME) == 0) - { - clock_gettime (timer->clock, &now); - have_now = 1; - } - - pthread_mutex_lock (&__timer_mutex); - timer_addref (timer); - - /* One final check of timer validity; this one is possible only - until we have the mutex, because it accesses the inuse flag. */ - - if (! timer_valid(timer)) - { - __set_errno (EINVAL); - goto unlock_bail; - } - - if (ovalue != NULL) - { - ovalue->it_interval = timer->value.it_interval; - - if (timer->armed) - { - if (! have_now) - { - pthread_mutex_unlock (&__timer_mutex); - clock_gettime (timer->clock, &now); - have_now = 1; - pthread_mutex_lock (&__timer_mutex); - timer_addref (timer); - } - - timespec_sub (&ovalue->it_value, &timer->expirytime, &now); - } - else - { - ovalue->it_value.tv_sec = 0; - ovalue->it_value.tv_nsec = 0; - } - } - - timer->value = *value; - - list_unlink_ip (&timer->links); - timer->armed = 0; - - thread = timer->thread; - - /* A value of { 0, 0 } causes the timer to be stopped. */ - if (value->it_value.tv_sec != 0 - || __builtin_expect (value->it_value.tv_nsec != 0, 1)) - { - if ((flags & TIMER_ABSTIME) != 0) - /* The user specified the expiration time. */ - timer->expirytime = value->it_value; - else - timespec_add (&timer->expirytime, &now, &value->it_value); - - /* Only need to wake up the thread if timer is inserted - at the head of the queue. */ - if (thread != NULL) - need_wakeup = __timer_thread_queue_timer (thread, timer); - timer->armed = 1; - } - - retval = 0; - -unlock_bail: - timer_delref (timer); - pthread_mutex_unlock (&__timer_mutex); - -bail: - if (thread != NULL && need_wakeup) - __timer_thread_wakeup (thread); - - return retval; -} diff --git a/nptl/sysdeps/pthread/tst-mqueue8x.c b/nptl/sysdeps/pthread/tst-mqueue8x.c deleted file mode 100644 index ca280394f7..0000000000 --- a/nptl/sysdeps/pthread/tst-mqueue8x.c +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/nptl/sysdeps/pthread/tst-timer.c b/nptl/sysdeps/pthread/tst-timer.c deleted file mode 100644 index 16adf3c199..0000000000 --- a/nptl/sysdeps/pthread/tst-timer.c +++ /dev/null @@ -1,159 +0,0 @@ -/* Tests for POSIX timer implementation. - Copyright (C) 2000-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Kaz Kylheku . - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include -#include -#include -#include -#include - - -static void -notify_func1 (union sigval sigval) -{ - puts ("notify_func1"); -} - - -static void -notify_func2 (union sigval sigval) -{ - puts ("notify_func2"); -} - - -static void -signal_func (int sig) -{ - static const char text[] = "signal_func\n"; - signal (sig, signal_func); - write (STDOUT_FILENO, text, sizeof text - 1); -} - -static void -intr_sleep (int sec) -{ - struct timespec ts; - - ts.tv_sec = sec; - ts.tv_nsec = 0; - - while (nanosleep (&ts, &ts) == -1 && errno == EINTR) - ; -} - -#define ZSIGALRM 14 - - -int -main (void) -{ - struct timespec ts; - timer_t timer_sig, timer_thr1, timer_thr2; - int retval; - struct sigevent sigev1 = - { - .sigev_notify = SIGEV_SIGNAL, - .sigev_signo = ZSIGALRM - }; - struct sigevent sigev2; - struct itimerspec itimer1 = { { 0, 200000000 }, { 0, 200000000 } }; - struct itimerspec itimer2 = { { 0, 100000000 }, { 0, 500000000 } }; - struct itimerspec itimer3 = { { 0, 150000000 }, { 0, 300000000 } }; - struct itimerspec old; - - retval = clock_gettime (CLOCK_REALTIME, &ts); - - sigev2.sigev_notify = SIGEV_THREAD; - sigev2.sigev_notify_function = notify_func1; - sigev2.sigev_notify_attributes = NULL; - /* It is unnecessary to do the following but to set a good example - we do it anyhow. */ - sigev2.sigev_value.sival_ptr = NULL; - - setvbuf (stdout, 0, _IOLBF, 0); - - printf ("clock_gettime returned %d, timespec = { %ld, %ld }\n", - retval, ts.tv_sec, ts.tv_nsec); - - retval = clock_getres (CLOCK_REALTIME, &ts); - - printf ("clock_getres returned %d, timespec = { %ld, %ld }\n", - retval, ts.tv_sec, ts.tv_nsec); - - if (timer_create (CLOCK_REALTIME, &sigev1, &timer_sig) != 0) - { - printf ("timer_create for timer_sig failed: %m\n"); - exit (1); - } - if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr1) != 0) - { - printf ("timer_create for timer_thr1 failed: %m\n"); - exit (1); - } - sigev2.sigev_notify_function = notify_func2; - if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr2) != 0) - { - printf ("timer_create for timer_thr2 failed: %m\n"); - exit (1); - } - - if (timer_settime (timer_thr1, 0, &itimer2, &old) != 0) - { - printf ("timer_settime for timer_thr1 failed: %m\n"); - exit (1); - } - if (timer_settime (timer_thr2, 0, &itimer3, &old) != 0) - { - printf ("timer_settime for timer_thr2 failed: %m\n"); - exit (1); - } - - signal (ZSIGALRM, signal_func); - - if (timer_settime (timer_sig, 0, &itimer1, &old) != 0) - { - printf ("timer_settime for timer_sig failed: %m\n"); - exit (1); - } - - intr_sleep (3); - - if (timer_delete (timer_sig) != 0) - { - printf ("timer_delete for timer_sig failed: %m\n"); - exit (1); - } - if (timer_delete (timer_thr1) != 0) - { - printf ("timer_delete for timer_thr1 failed: %m\n"); - exit (1); - } - - intr_sleep (3); - - if (timer_delete (timer_thr2) != 0) - { - printf ("timer_delete for timer_thr2 failed: %m\n"); - exit (1); - } - - return 0; -} diff --git a/nptl/sysdeps/pthread/unwind-forcedunwind.c b/nptl/sysdeps/pthread/unwind-forcedunwind.c deleted file mode 100644 index 9d7bdc5b90..0000000000 --- a/nptl/sysdeps/pthread/unwind-forcedunwind.c +++ /dev/null @@ -1,151 +0,0 @@ -/* Copyright (C) 2003-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek . - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see . */ - -#include -#include -#include -#include -#include -#include - -static void *libgcc_s_handle; -static void (*libgcc_s_resume) (struct _Unwind_Exception *exc); -static _Unwind_Reason_Code (*libgcc_s_personality) - (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *, - struct _Unwind_Context *); -static _Unwind_Reason_Code (*libgcc_s_forcedunwind) - (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *); -static _Unwind_Word (*libgcc_s_getcfa) (struct _Unwind_Context *); - -void -__attribute_noinline__ -pthread_cancel_init (void) -{ - void *resume; - void *personality; - void *forcedunwind; - void *getcfa; - void *handle; - - if (__glibc_likely (libgcc_s_handle != NULL)) - { - /* Force gcc to reload all values. */ - asm volatile ("" ::: "memory"); - return; - } - - handle = __libc_dlopen (LIBGCC_S_SO); - - if (handle == NULL - || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL - || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL - || (forcedunwind = __libc_dlsym (handle, "_Unwind_ForcedUnwind")) - == NULL - || (getcfa = __libc_dlsym (handle, "_Unwind_GetCFA")) == NULL -#ifdef ARCH_CANCEL_INIT - || ARCH_CANCEL_INIT (handle) -#endif - ) - __libc_fatal (LIBGCC_S_SO " must be installed for pthread_cancel to work\n"); - - PTR_MANGLE (resume); - libgcc_s_resume = resume; - PTR_MANGLE (personality); - libgcc_s_personality = personality; - PTR_MANGLE (forcedunwind); - libgcc_s_forcedunwind = forcedunwind; - PTR_MANGLE (getcfa); - libgcc_s_getcfa = getcfa; - /* Make sure libgcc_s_handle is written last. Otherwise, - pthread_cancel_init might return early even when the pointer the - caller is interested in is not initialized yet. */ - atomic_write_barrier (); - libgcc_s_handle = handle; -} - -void -__libc_freeres_fn_section -__unwind_freeres (void) -{ - void *handle = libgcc_s_handle; - if (handle != NULL) - { - libgcc_s_handle = NULL; - __libc_dlclose (handle); - } -} - -void -_Unwind_Resume (struct _Unwind_Exception *exc) -{ - if (__glibc_unlikely (libgcc_s_handle == NULL)) - pthread_cancel_init (); - else - atomic_read_barrier (); - - void (*resume) (struct _Unwind_Exception *exc) = libgcc_s_resume; - PTR_DEMANGLE (resume); - resume (exc); -} - -_Unwind_Reason_Code -__gcc_personality_v0 (int version, _Unwind_Action actions, - _Unwind_Exception_Class exception_class, - struct _Unwind_Exception *ue_header, - struct _Unwind_Context *context) -{ - if (__glibc_unlikely (libgcc_s_handle == NULL)) - pthread_cancel_init (); - else - atomic_read_barrier (); - - _Unwind_Reason_Code (*personality) - (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *, - struct _Unwind_Context *) = libgcc_s_personality; - PTR_DEMANGLE (personality); - return personality (version, actions, exception_class, ue_header, context); -} - -_Unwind_Reason_Code -_Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop, - void *stop_argument) -{ - if (__glibc_unlikely (libgcc_s_handle == NULL)) - pthread_cancel_init (); - else - atomic_read_barrier (); - - _Unwind_Reason_Code (*forcedunwind) - (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *) - = libgcc_s_forcedunwind; - PTR_DEMANGLE (forcedunwind); - return forcedunwind (exc, stop, stop_argument); -} - -_Unwind_Word -_Unwind_GetCFA (struct _Unwind_Context *context) -{ - if (__glibc_unlikely (libgcc_s_handle == NULL)) - pthread_cancel_init (); - else - atomic_read_barrier (); - - _Unwind_Word (*getcfa) (struct _Unwind_Context *) = libgcc_s_getcfa; - PTR_DEMANGLE (getcfa); - return getcfa (context); -} diff --git a/nptl/sysdeps/unix/sysv/linux/Implies b/nptl/sysdeps/unix/sysv/linux/Implies deleted file mode 100644 index f1b3e8939c..0000000000 --- a/nptl/sysdeps/unix/sysv/linux/Implies +++ /dev/null @@ -1 +0,0 @@ -pthread diff --git a/nptl/sysdeps/unix/sysv/linux/createthread.c b/nptl/sysdeps/unix/sysv/linux/createthread.c index c2f09025b4..9a21f3997a 100644 --- a/nptl/sysdeps/unix/sysv/linux/createthread.c +++ b/nptl/sysdeps/unix/sysv/linux/createthread.c @@ -20,4 +20,4 @@ #define TLS_VALUE pd /* Get the real implementation. */ -#include +#include diff --git a/sysdeps/nptl/Implies b/sysdeps/nptl/Implies new file mode 100644 index 0000000000..f1b3e8939c --- /dev/null +++ b/sysdeps/nptl/Implies @@ -0,0 +1 @@ +pthread diff --git a/sysdeps/nptl/Makefile b/sysdeps/nptl/Makefile new file mode 100644 index 0000000000..bedf39b906 --- /dev/null +++ b/sysdeps/nptl/Makefile @@ -0,0 +1,35 @@ +# Copyright (C) 2002-2014 Free Software Foundation, Inc. +# This file is part of the GNU C Library. +# Contributed by Ulrich Drepper , 2002. + +# The GNU C Library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. + +# The GNU C Library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. + +# You should have received a copy of the GNU Lesser General Public +# License along with the GNU C Library; if not, see +# . + +ifeq ($(subdir),nptl) +libpthread-sysdep_routines += errno-loc +endif + +ifeq ($(subdir),rt) +librt-sysdep_routines += timer_routines librt-cancellation +CFLAGS-librt-cancellation.c += -fexceptions -fasynchronous-unwind-tables + +ifeq ($(have-forced-unwind),yes) +tests += tst-mqueue8x +CFLAGS-tst-mqueue8x.c += -fexceptions +endif +endif + +ifeq ($(subdir),posix) +CFLAGS-confstr.c += -DLIBPTHREAD_VERSION='"NPTL $(version)"' +endif diff --git a/sysdeps/nptl/Subdirs b/sysdeps/nptl/Subdirs new file mode 100644 index 0000000000..36266c1e69 --- /dev/null +++ b/sysdeps/nptl/Subdirs @@ -0,0 +1,2 @@ +nptl +nptl_db diff --git a/sysdeps/nptl/aio_misc.h b/sysdeps/nptl/aio_misc.h new file mode 100644 index 0000000000..ac3488c57e --- /dev/null +++ b/sysdeps/nptl/aio_misc.h @@ -0,0 +1,74 @@ +/* Copyright (C) 2006-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +/* We define a special synchronization primitive for AIO. POSIX + conditional variables would be ideal but the pthread_cond_*wait + operations do not return on EINTR. This is a requirement for + correct aio_suspend and lio_listio implementations. */ + +#include +#include +#include + +#define DONT_NEED_AIO_MISC_COND 1 + +#define AIO_MISC_NOTIFY(waitlist) \ + do { \ + if (*waitlist->counterp > 0 && --*waitlist->counterp == 0) \ + lll_futex_wake (waitlist->counterp, 1, LLL_PRIVATE); \ + } while (0) + +#define AIO_MISC_WAIT(result, futex, timeout, cancel) \ + do { \ + volatile int *futexaddr = &futex; \ + int oldval = futex; \ + \ + if (oldval != 0) \ + { \ + pthread_mutex_unlock (&__aio_requests_mutex); \ + \ + int oldtype; \ + if (cancel) \ + oldtype = LIBC_CANCEL_ASYNC (); \ + \ + int status; \ + do \ + { \ + status = lll_futex_timed_wait (futexaddr, oldval, timeout, \ + LLL_PRIVATE); \ + if (status != -EWOULDBLOCK) \ + break; \ + \ + oldval = *futexaddr; \ + } \ + while (oldval != 0); \ + \ + if (cancel) \ + LIBC_CANCEL_RESET (oldtype); \ + \ + if (status == -EINTR) \ + result = EINTR; \ + else if (status == -ETIMEDOUT) \ + result = EAGAIN; \ + else \ + assert (status == 0 || status == -EWOULDBLOCK); \ + \ + pthread_mutex_lock (&__aio_requests_mutex); \ + } \ + } while (0) + +#include_next diff --git a/sysdeps/nptl/bits/libc-lock.h b/sysdeps/nptl/bits/libc-lock.h new file mode 100644 index 0000000000..532cf2c701 --- /dev/null +++ b/sysdeps/nptl/bits/libc-lock.h @@ -0,0 +1,187 @@ +/* libc-internal interface for mutex locks. NPTL version. + Copyright (C) 1996-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#ifndef _BITS_LIBC_LOCK_H +#define _BITS_LIBC_LOCK_H 1 + +#include +#define __need_NULL +#include + + +/* Mutex type. */ +#if defined _LIBC || defined _IO_MTSAFE_IO +# if (defined NOT_IN_libc && !defined IS_IN_libpthread) || !defined _LIBC +typedef struct { pthread_mutex_t mutex; } __libc_lock_recursive_t; +# else +typedef struct { int lock; int cnt; void *owner; } __libc_lock_recursive_t; +# endif +#else +typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t; +#endif + +/* Define a lock variable NAME with storage class CLASS. The lock must be + initialized with __libc_lock_init before it can be used (or define it + with __libc_lock_define_initialized, below). Use `extern' for CLASS to + declare a lock defined in another module. In public structure + definitions you must use a pointer to the lock structure (i.e., NAME + begins with a `*'), because its storage size will not be known outside + of libc. */ +#define __libc_lock_define_recursive(CLASS,NAME) \ + CLASS __libc_lock_recursive_t NAME; + +/* Define an initialized recursive lock variable NAME with storage + class CLASS. */ +#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) +# define __libc_lock_define_initialized_recursive(CLASS, NAME) \ + CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER; +# define _LIBC_LOCK_RECURSIVE_INITIALIZER \ + { LLL_LOCK_INITIALIZER, 0, NULL } +#else +# define __libc_lock_define_initialized_recursive(CLASS,NAME) \ + CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER; +# define _LIBC_LOCK_RECURSIVE_INITIALIZER \ + {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP} +#endif + +/* Initialize a recursive mutex. */ +#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) +# define __libc_lock_init_recursive(NAME) \ + ((NAME) = (__libc_lock_recursive_t) _LIBC_LOCK_RECURSIVE_INITIALIZER, 0) +#else +# define __libc_lock_init_recursive(NAME) \ + do { \ + if (__pthread_mutex_init != NULL) \ + { \ + pthread_mutexattr_t __attr; \ + __pthread_mutexattr_init (&__attr); \ + __pthread_mutexattr_settype (&__attr, PTHREAD_MUTEX_RECURSIVE_NP); \ + __pthread_mutex_init (&(NAME).mutex, &__attr); \ + __pthread_mutexattr_destroy (&__attr); \ + } \ + } while (0) +#endif + +/* Finalize recursive named lock. */ +#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) +# define __libc_lock_fini_recursive(NAME) ((void) 0) +#else +# define __libc_lock_fini_recursive(NAME) \ + __libc_maybe_call (__pthread_mutex_destroy, (&(NAME).mutex), 0) +#endif + +/* Lock the recursive named lock variable. */ +#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) +# define __libc_lock_lock_recursive(NAME) \ + do { \ + void *self = THREAD_SELF; \ + if ((NAME).owner != self) \ + { \ + lll_lock ((NAME).lock, LLL_PRIVATE); \ + (NAME).owner = self; \ + } \ + ++(NAME).cnt; \ + } while (0) +#else +# define __libc_lock_lock_recursive(NAME) \ + __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0) +#endif + +/* Try to lock the recursive named lock variable. */ +#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) +# define __libc_lock_trylock_recursive(NAME) \ + ({ \ + int result = 0; \ + void *self = THREAD_SELF; \ + if ((NAME).owner != self) \ + { \ + if (lll_trylock ((NAME).lock) == 0) \ + { \ + (NAME).owner = self; \ + (NAME).cnt = 1; \ + } \ + else \ + result = EBUSY; \ + } \ + else \ + ++(NAME).cnt; \ + result; \ + }) +#else +# define __libc_lock_trylock_recursive(NAME) \ + __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0) +#endif + +/* Unlock the recursive named lock variable. */ +#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) +/* We do no error checking here. */ +# define __libc_lock_unlock_recursive(NAME) \ + do { \ + if (--(NAME).cnt == 0) \ + { \ + (NAME).owner = NULL; \ + lll_unlock ((NAME).lock, LLL_PRIVATE); \ + } \ + } while (0) +#else +# define __libc_lock_unlock_recursive(NAME) \ + __libc_maybe_call (__pthread_mutex_unlock, (&(NAME).mutex), 0) +#endif + +/* Note that for I/O cleanup handling we are using the old-style + cancel handling. It does not have to be integrated with C++ since + no C++ code is called in the middle. The old-style handling is + faster and the support is not going away. */ +extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer, + void (*routine) (void *), void *arg); +extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer, + int execute); + +/* Start critical region with cleanup. */ +#define __libc_cleanup_region_start(DOIT, FCT, ARG) \ + { struct _pthread_cleanup_buffer _buffer; \ + int _avail; \ + if (DOIT) { \ + _avail = PTFAVAIL (_pthread_cleanup_push_defer); \ + if (_avail) { \ + __libc_ptf_call_always (_pthread_cleanup_push_defer, (&_buffer, FCT, \ + ARG)); \ + } else { \ + _buffer.__routine = (FCT); \ + _buffer.__arg = (ARG); \ + } \ + } else { \ + _avail = 0; \ + } + +/* End critical region with cleanup. */ +#define __libc_cleanup_region_end(DOIT) \ + if (_avail) { \ + __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\ + } else if (DOIT) \ + _buffer.__routine (_buffer.__arg); \ + } + + +/* Hide the definitions which are only supposed to be used inside libc in + a separate file. This file is not present in the installation! */ +#ifdef _LIBC +# include "libc-lockP.h" +#endif + +#endif /* bits/libc-lock.h */ diff --git a/sysdeps/nptl/bits/libc-lockP.h b/sysdeps/nptl/bits/libc-lockP.h new file mode 100644 index 0000000000..ec202713d6 --- /dev/null +++ b/sysdeps/nptl/bits/libc-lockP.h @@ -0,0 +1,424 @@ +/* Private libc-internal interface for mutex locks. NPTL version. + Copyright (C) 1996-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#ifndef _BITS_LIBC_LOCKP_H +#define _BITS_LIBC_LOCKP_H 1 + +#include +#define __need_NULL +#include + + +/* Fortunately Linux now has a mean to do locking which is realtime + safe without the aid of the thread library. We also need no fancy + options like error checking mutexes etc. We only need simple + locks, maybe recursive. This can be easily and cheaply implemented + using futexes. We will use them everywhere except in ld.so since + ld.so might be used on old kernels with a different libc.so. */ +#include +#include +#include + +/* Mutex type. */ +#if defined NOT_IN_libc && !defined IS_IN_libpthread +typedef pthread_mutex_t __libc_lock_t; +#else +typedef int __libc_lock_t; +#endif +typedef struct { pthread_mutex_t mutex; } __rtld_lock_recursive_t; +typedef pthread_rwlock_t __libc_rwlock_t; + +/* Type for key to thread-specific data. */ +typedef pthread_key_t __libc_key_t; + +/* Define a lock variable NAME with storage class CLASS. The lock must be + initialized with __libc_lock_init before it can be used (or define it + with __libc_lock_define_initialized, below). Use `extern' for CLASS to + declare a lock defined in another module. In public structure + definitions you must use a pointer to the lock structure (i.e., NAME + begins with a `*'), because its storage size will not be known outside + of libc. */ +#define __libc_lock_define(CLASS,NAME) \ + CLASS __libc_lock_t NAME; +#define __libc_rwlock_define(CLASS,NAME) \ + CLASS __libc_rwlock_t NAME; +#define __rtld_lock_define_recursive(CLASS,NAME) \ + CLASS __rtld_lock_recursive_t NAME; + +/* Define an initialized lock variable NAME with storage class CLASS. + + For the C library we take a deeper look at the initializer. For + this implementation all fields are initialized to zero. Therefore + we don't initialize the variable which allows putting it into the + BSS section. (Except on PA-RISC and other odd architectures, where + initialized locks must be set to one due to the lack of normal + atomic operations.) */ + +#if !defined NOT_IN_libc || defined IS_IN_libpthread +# if LLL_LOCK_INITIALIZER == 0 +# define __libc_lock_define_initialized(CLASS,NAME) \ + CLASS __libc_lock_t NAME; +# else +# define __libc_lock_define_initialized(CLASS,NAME) \ + CLASS __libc_lock_t NAME = LLL_LOCK_INITIALIZER; +# endif +#else +# define __libc_lock_define_initialized(CLASS,NAME) \ + CLASS __libc_lock_t NAME; +#endif + +#define __libc_rwlock_define_initialized(CLASS,NAME) \ + CLASS __libc_rwlock_t NAME = PTHREAD_RWLOCK_INITIALIZER; + +#define __rtld_lock_define_initialized_recursive(CLASS,NAME) \ + CLASS __rtld_lock_recursive_t NAME = _RTLD_LOCK_RECURSIVE_INITIALIZER; +#define _RTLD_LOCK_RECURSIVE_INITIALIZER \ + {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP} + +#define __rtld_lock_initialize(NAME) \ + (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER) + +/* If we check for a weakly referenced symbol and then perform a + normal jump to it te code generated for some platforms in case of + PIC is unnecessarily slow. What would happen is that the function + is first referenced as data and then it is called indirectly + through the PLT. We can make this a direct jump. */ +#ifdef __PIC__ +# define __libc_maybe_call(FUNC, ARGS, ELSE) \ + (__extension__ ({ __typeof (FUNC) *_fn = (FUNC); \ + _fn != NULL ? (*_fn) ARGS : ELSE; })) +#else +# define __libc_maybe_call(FUNC, ARGS, ELSE) \ + (FUNC != NULL ? FUNC ARGS : ELSE) +#endif + +/* Call thread functions through the function pointer table. */ +#if defined SHARED && !defined NOT_IN_libc +# define PTFAVAIL(NAME) __libc_pthread_functions_init +# define __libc_ptf_call(FUNC, ARGS, ELSE) \ + (__libc_pthread_functions_init ? PTHFCT_CALL (ptr_##FUNC, ARGS) : ELSE) +# define __libc_ptf_call_always(FUNC, ARGS) \ + PTHFCT_CALL (ptr_##FUNC, ARGS) +#else +# define PTFAVAIL(NAME) (NAME != NULL) +# define __libc_ptf_call(FUNC, ARGS, ELSE) \ + __libc_maybe_call (FUNC, ARGS, ELSE) +# define __libc_ptf_call_always(FUNC, ARGS) \ + FUNC ARGS +#endif + + +/* Initialize the named lock variable, leaving it in a consistent, unlocked + state. */ +#if !defined NOT_IN_libc || defined IS_IN_libpthread +# define __libc_lock_init(NAME) ((NAME) = LLL_LOCK_INITIALIZER, 0) +#else +# define __libc_lock_init(NAME) \ + __libc_maybe_call (__pthread_mutex_init, (&(NAME), NULL), 0) +#endif +#if defined SHARED && !defined NOT_IN_libc +/* ((NAME) = (__libc_rwlock_t) PTHREAD_RWLOCK_INITIALIZER, 0) is + inefficient. */ +# define __libc_rwlock_init(NAME) \ + (__builtin_memset (&(NAME), '\0', sizeof (NAME)), 0) +#else +# define __libc_rwlock_init(NAME) \ + __libc_maybe_call (__pthread_rwlock_init, (&(NAME), NULL), 0) +#endif + +/* Finalize the named lock variable, which must be locked. It cannot be + used again until __libc_lock_init is called again on it. This must be + called on a lock variable before the containing storage is reused. */ +#if !defined NOT_IN_libc || defined IS_IN_libpthread +# define __libc_lock_fini(NAME) ((void) 0) +#else +# define __libc_lock_fini(NAME) \ + __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0) +#endif +#if defined SHARED && !defined NOT_IN_libc +# define __libc_rwlock_fini(NAME) ((void) 0) +#else +# define __libc_rwlock_fini(NAME) \ + __libc_maybe_call (__pthread_rwlock_destroy, (&(NAME)), 0) +#endif + +/* Lock the named lock variable. */ +#if !defined NOT_IN_libc || defined IS_IN_libpthread +# ifndef __libc_lock_lock +# define __libc_lock_lock(NAME) \ + ({ lll_lock (NAME, LLL_PRIVATE); 0; }) +# endif +#else +# undef __libc_lock_lock +# define __libc_lock_lock(NAME) \ + __libc_maybe_call (__pthread_mutex_lock, (&(NAME)), 0) +#endif +#define __libc_rwlock_rdlock(NAME) \ + __libc_ptf_call (__pthread_rwlock_rdlock, (&(NAME)), 0) +#define __libc_rwlock_wrlock(NAME) \ + __libc_ptf_call (__pthread_rwlock_wrlock, (&(NAME)), 0) + +/* Try to lock the named lock variable. */ +#if !defined NOT_IN_libc || defined IS_IN_libpthread +# ifndef __libc_lock_trylock +# define __libc_lock_trylock(NAME) \ + lll_trylock (NAME) +# endif +#else +# undef __libc_lock_trylock +# define __libc_lock_trylock(NAME) \ + __libc_maybe_call (__pthread_mutex_trylock, (&(NAME)), 0) +#endif +#define __libc_rwlock_tryrdlock(NAME) \ + __libc_maybe_call (__pthread_rwlock_tryrdlock, (&(NAME)), 0) +#define __libc_rwlock_trywrlock(NAME) \ + __libc_maybe_call (__pthread_rwlock_trywrlock, (&(NAME)), 0) + +#define __rtld_lock_trylock_recursive(NAME) \ + __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0) + +/* Unlock the named lock variable. */ +#if !defined NOT_IN_libc || defined IS_IN_libpthread +# define __libc_lock_unlock(NAME) \ + lll_unlock (NAME, LLL_PRIVATE) +#else +# define __libc_lock_unlock(NAME) \ + __libc_maybe_call (__pthread_mutex_unlock, (&(NAME)), 0) +#endif +#define __libc_rwlock_unlock(NAME) \ + __libc_ptf_call (__pthread_rwlock_unlock, (&(NAME)), 0) + +#ifdef SHARED +# define __rtld_lock_default_lock_recursive(lock) \ + ++((pthread_mutex_t *)(lock))->__data.__count; + +# define __rtld_lock_default_unlock_recursive(lock) \ + --((pthread_mutex_t *)(lock))->__data.__count; + +# define __rtld_lock_lock_recursive(NAME) \ + GL(dl_rtld_lock_recursive) (&(NAME).mutex) + +# define __rtld_lock_unlock_recursive(NAME) \ + GL(dl_rtld_unlock_recursive) (&(NAME).mutex) +#else +# define __rtld_lock_lock_recursive(NAME) \ + __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0) + +# define __rtld_lock_unlock_recursive(NAME) \ + __libc_maybe_call (__pthread_mutex_unlock, (&(NAME).mutex), 0) +#endif + +/* Define once control variable. */ +#if PTHREAD_ONCE_INIT == 0 +/* Special case for static variables where we can avoid the initialization + if it is zero. */ +# define __libc_once_define(CLASS, NAME) \ + CLASS pthread_once_t NAME +#else +# define __libc_once_define(CLASS, NAME) \ + CLASS pthread_once_t NAME = PTHREAD_ONCE_INIT +#endif + +/* Call handler iff the first call. */ +#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \ + do { \ + if (PTFAVAIL (__pthread_once)) \ + __libc_ptf_call_always (__pthread_once, (&(ONCE_CONTROL), \ + INIT_FUNCTION)); \ + else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) { \ + INIT_FUNCTION (); \ + (ONCE_CONTROL) |= 2; \ + } \ + } while (0) + +/* Get once control variable. */ +#define __libc_once_get(ONCE_CONTROL) ((ONCE_CONTROL) != PTHREAD_ONCE_INIT) + +/* Note that for I/O cleanup handling we are using the old-style + cancel handling. It does not have to be integrated with C++ snce + no C++ code is called in the middle. The old-style handling is + faster and the support is not going away. */ +extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer, + void (*routine) (void *), void *arg); +extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer, + int execute); +extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer, + void (*routine) (void *), void *arg); +extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer, + int execute); + +/* Sometimes we have to exit the block in the middle. */ +#define __libc_cleanup_end(DOIT) \ + if (_avail) { \ + __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\ + } else if (DOIT) \ + _buffer.__routine (_buffer.__arg) + + +/* Normal cleanup handling, based on C cleanup attribute. */ +__extern_inline void +__libc_cleanup_routine (struct __pthread_cleanup_frame *f) +{ + if (f->__do_it) + f->__cancel_routine (f->__cancel_arg); +} + +#define __libc_cleanup_push(fct, arg) \ + do { \ + struct __pthread_cleanup_frame __clframe \ + __attribute__ ((__cleanup__ (__libc_cleanup_routine))) \ + = { .__cancel_routine = (fct), .__cancel_arg = (arg), \ + .__do_it = 1 }; + +#define __libc_cleanup_pop(execute) \ + __clframe.__do_it = (execute); \ + } while (0) + + +/* Create thread-specific key. */ +#define __libc_key_create(KEY, DESTRUCTOR) \ + __libc_ptf_call (__pthread_key_create, (KEY, DESTRUCTOR), 1) + +/* Get thread-specific data. */ +#define __libc_getspecific(KEY) \ + __libc_ptf_call (__pthread_getspecific, (KEY), NULL) + +/* Set thread-specific data. */ +#define __libc_setspecific(KEY, VALUE) \ + __libc_ptf_call (__pthread_setspecific, (KEY, VALUE), 0) + + +/* Register handlers to execute before and after `fork'. Note that the + last parameter is NULL. The handlers registered by the libc are + never removed so this is OK. */ +#define __libc_atfork(PREPARE, PARENT, CHILD) \ + __register_atfork (PREPARE, PARENT, CHILD, NULL) +extern int __register_atfork (void (*__prepare) (void), + void (*__parent) (void), + void (*__child) (void), + void *__dso_handle); + +/* Functions that are used by this file and are internal to the GNU C + library. */ + +extern int __pthread_mutex_init (pthread_mutex_t *__mutex, + const pthread_mutexattr_t *__mutex_attr); + +extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex); + +extern int __pthread_mutex_trylock (pthread_mutex_t *__mutex); + +extern int __pthread_mutex_lock (pthread_mutex_t *__mutex); + +extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex); + +extern int __pthread_mutexattr_init (pthread_mutexattr_t *__attr); + +extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *__attr); + +extern int __pthread_mutexattr_settype (pthread_mutexattr_t *__attr, + int __kind); + +extern int __pthread_rwlock_init (pthread_rwlock_t *__rwlock, + const pthread_rwlockattr_t *__attr); + +extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock); + +extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock); + +extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock); + +extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock); + +extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock); + +extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock); + +extern int __pthread_key_create (pthread_key_t *__key, + void (*__destr_function) (void *)); + +extern int __pthread_setspecific (pthread_key_t __key, + const void *__pointer); + +extern void *__pthread_getspecific (pthread_key_t __key); + +extern int __pthread_once (pthread_once_t *__once_control, + void (*__init_routine) (void)); + +extern int __pthread_atfork (void (*__prepare) (void), + void (*__parent) (void), + void (*__child) (void)); + + + +/* Make the pthread functions weak so that we can elide them from + single-threaded processes. */ +#ifndef __NO_WEAK_PTHREAD_ALIASES +# ifdef weak_extern +weak_extern (__pthread_mutex_init) +weak_extern (__pthread_mutex_destroy) +weak_extern (__pthread_mutex_lock) +weak_extern (__pthread_mutex_trylock) +weak_extern (__pthread_mutex_unlock) +weak_extern (__pthread_mutexattr_init) +weak_extern (__pthread_mutexattr_destroy) +weak_extern (__pthread_mutexattr_settype) +weak_extern (__pthread_rwlock_init) +weak_extern (__pthread_rwlock_destroy) +weak_extern (__pthread_rwlock_rdlock) +weak_extern (__pthread_rwlock_tryrdlock) +weak_extern (__pthread_rwlock_wrlock) +weak_extern (__pthread_rwlock_trywrlock) +weak_extern (__pthread_rwlock_unlock) +weak_extern (__pthread_key_create) +weak_extern (__pthread_setspecific) +weak_extern (__pthread_getspecific) +weak_extern (__pthread_once) +weak_extern (__pthread_initialize) +weak_extern (__pthread_atfork) +weak_extern (_pthread_cleanup_push_defer) +weak_extern (_pthread_cleanup_pop_restore) +weak_extern (pthread_setcancelstate) +# else +# pragma weak __pthread_mutex_init +# pragma weak __pthread_mutex_destroy +# pragma weak __pthread_mutex_lock +# pragma weak __pthread_mutex_trylock +# pragma weak __pthread_mutex_unlock +# pragma weak __pthread_mutexattr_init +# pragma weak __pthread_mutexattr_destroy +# pragma weak __pthread_mutexattr_settype +# pragma weak __pthread_rwlock_destroy +# pragma weak __pthread_rwlock_rdlock +# pragma weak __pthread_rwlock_tryrdlock +# pragma weak __pthread_rwlock_wrlock +# pragma weak __pthread_rwlock_trywrlock +# pragma weak __pthread_rwlock_unlock +# pragma weak __pthread_key_create +# pragma weak __pthread_setspecific +# pragma weak __pthread_getspecific +# pragma weak __pthread_once +# pragma weak __pthread_initialize +# pragma weak __pthread_atfork +# pragma weak _pthread_cleanup_push_defer +# pragma weak _pthread_cleanup_pop_restore +# pragma weak pthread_setcancelstate +# endif +#endif + +#endif /* bits/libc-lockP.h */ diff --git a/sysdeps/nptl/bits/stdio-lock.h b/sysdeps/nptl/bits/stdio-lock.h new file mode 100644 index 0000000000..e2678cc918 --- /dev/null +++ b/sysdeps/nptl/bits/stdio-lock.h @@ -0,0 +1,110 @@ +/* Thread package specific definitions of stream lock type. NPTL version. + Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef _BITS_STDIO_LOCK_H +#define _BITS_STDIO_LOCK_H 1 + +#include +#include + + +/* The locking here is very inexpensive, even for inlining. */ +#define _IO_lock_inexpensive 1 + +typedef struct { int lock; int cnt; void *owner; } _IO_lock_t; + +#define _IO_lock_initializer { LLL_LOCK_INITIALIZER, 0, NULL } + +#define _IO_lock_init(_name) \ + ((_name) = (_IO_lock_t) _IO_lock_initializer , 0) + +#define _IO_lock_fini(_name) \ + ((void) 0) + +#define _IO_lock_lock(_name) \ + do { \ + void *__self = THREAD_SELF; \ + if ((_name).owner != __self) \ + { \ + lll_lock ((_name).lock, LLL_PRIVATE); \ + (_name).owner = __self; \ + } \ + ++(_name).cnt; \ + } while (0) + +#define _IO_lock_trylock(_name) \ + ({ \ + int __result = 0; \ + void *__self = THREAD_SELF; \ + if ((_name).owner != __self) \ + { \ + if (lll_trylock ((_name).lock) == 0) \ + { \ + (_name).owner = __self; \ + (_name).cnt = 1; \ + } \ + else \ + __result = EBUSY; \ + } \ + else \ + ++(_name).cnt; \ + __result; \ + }) + +#define _IO_lock_unlock(_name) \ + do { \ + if (--(_name).cnt == 0) \ + { \ + (_name).owner = NULL; \ + lll_unlock ((_name).lock, LLL_PRIVATE); \ + } \ + } while (0) + + + +#define _IO_cleanup_region_start(_fct, _fp) \ + __libc_cleanup_region_start (((_fp)->_flags & _IO_USER_LOCK) == 0, _fct, _fp) +#define _IO_cleanup_region_start_noarg(_fct) \ + __libc_cleanup_region_start (1, _fct, NULL) +#define _IO_cleanup_region_end(_doit) \ + __libc_cleanup_region_end (_doit) + +#if defined _LIBC && !defined NOT_IN_libc + +# ifdef __EXCEPTIONS +# define _IO_acquire_lock(_fp) \ + do { \ + _IO_FILE *_IO_acquire_lock_file \ + __attribute__((cleanup (_IO_acquire_lock_fct))) \ + = (_fp); \ + _IO_flockfile (_IO_acquire_lock_file); +# define _IO_acquire_lock_clear_flags2(_fp) \ + do { \ + _IO_FILE *_IO_acquire_lock_file \ + __attribute__((cleanup (_IO_acquire_lock_clear_flags2_fct))) \ + = (_fp); \ + _IO_flockfile (_IO_acquire_lock_file); +# else +# define _IO_acquire_lock(_fp) _IO_acquire_lock_needs_exceptions_enabled +# define _IO_acquire_lock_clear_flags2(_fp) _IO_acquire_lock (_fp) +# endif +# define _IO_release_lock(_fp) ; } while (0) + +#endif + +#endif /* bits/stdio-lock.h */ diff --git a/sysdeps/nptl/configure b/sysdeps/nptl/configure new file mode 100644 index 0000000000..239a039e3a --- /dev/null +++ b/sysdeps/nptl/configure @@ -0,0 +1,89 @@ +# This file is generated from configure.ac by Autoconf. DO NOT EDIT! + +if test "x$libc_cv_gcc___thread" != xyes; then + as_fn_error $? "compiler support for __thread is required" "$LINENO" 5 +fi + +if test "x${libc_cv_visibility_attribute}" != xyes || + test "x${libc_cv_broken_visibility_attribute}" != xno; then + as_fn_error $? "working compiler support for visibility attribute is required" "$LINENO" 5 +fi + +if test "x$libc_cv_asm_cfi_directives" != xyes; then + case "$base_machine" in + i386 | x86_64 | powerpc | s390) + as_fn_error $? "CFI directive support in assembler is required" "$LINENO" 5 ;; + *) ;; + esac +fi + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for forced unwind support" >&5 +$as_echo_n "checking for forced unwind support... " >&6; } +if ${libc_cv_forced_unwind+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include +int +main () +{ + +struct _Unwind_Exception exc; +struct _Unwind_Context *context; +_Unwind_GetCFA (context) + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + libc_cv_forced_unwind=yes +else + libc_cv_forced_unwind=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_forced_unwind" >&5 +$as_echo "$libc_cv_forced_unwind" >&6; } +if test $libc_cv_forced_unwind = yes; then + $as_echo "#define HAVE_FORCED_UNWIND 1" >>confdefs.h + + old_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -Werror -fexceptions" + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for C cleanup handling" >&5 +$as_echo_n "checking for C cleanup handling... " >&6; } +if ${libc_cv_c_cleanup+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +extern void some_function (void); +void cl (void *a) { } +int +main () +{ + + int a __attribute__ ((cleanup (cl))); + some_function () + ; + return 0; +} +_ACEOF +if ac_fn_c_try_compile "$LINENO"; then : + libc_cv_c_cleanup=yes +else + libc_cv_c_cleanup=no +fi +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_c_cleanup" >&5 +$as_echo "$libc_cv_c_cleanup" >&6; } + CFLAGS="$old_CFLAGS" + if test $libc_cv_c_cleanup = no; then + as_fn_error $? "the compiler must support C cleanup handling" "$LINENO" 5 + fi +else + as_fn_error $? "forced unwind support is required" "$LINENO" 5 +fi diff --git a/sysdeps/nptl/configure.ac b/sysdeps/nptl/configure.ac new file mode 100644 index 0000000000..413af96799 --- /dev/null +++ b/sysdeps/nptl/configure.ac @@ -0,0 +1,49 @@ +dnl configure fragment for new libpthread implementation. +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. + +if test "x$libc_cv_gcc___thread" != xyes; then + AC_MSG_ERROR(compiler support for __thread is required) +fi + +if test "x${libc_cv_visibility_attribute}" != xyes || + test "x${libc_cv_broken_visibility_attribute}" != xno; then + AC_MSG_ERROR(working compiler support for visibility attribute is required) +fi + +if test "x$libc_cv_asm_cfi_directives" != xyes; then + dnl We need this only for some architectures. + case "$base_machine" in + i386 | x86_64 | powerpc | s390) + AC_MSG_ERROR(CFI directive support in assembler is required) ;; + *) ;; + esac +fi + +dnl Iff is available, make sure it is the right one and it +dnl contains struct _Unwind_Exception. +AC_CACHE_CHECK(dnl +for forced unwind support, libc_cv_forced_unwind, [dnl +AC_TRY_COMPILE([#include ], [ +struct _Unwind_Exception exc; +struct _Unwind_Context *context; +_Unwind_GetCFA (context)], +libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)]) +if test $libc_cv_forced_unwind = yes; then + AC_DEFINE(HAVE_FORCED_UNWIND) +dnl Check for C cleanup handling. + old_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -Werror -fexceptions" + AC_CACHE_CHECK([for C cleanup handling], libc_cv_c_cleanup, [dnl + AC_TRY_COMPILE([ +extern void some_function (void); +void cl (void *a) { }], [ + int a __attribute__ ((cleanup (cl))); + some_function ()], +libc_cv_c_cleanup=yes, libc_cv_c_cleanup=no)]) + CFLAGS="$old_CFLAGS" + if test $libc_cv_c_cleanup = no; then + AC_MSG_ERROR([the compiler must support C cleanup handling]) + fi +else + AC_MSG_ERROR(forced unwind support is required) +fi diff --git a/sysdeps/nptl/gai_misc.h b/sysdeps/nptl/gai_misc.h new file mode 100644 index 0000000000..946275ed75 --- /dev/null +++ b/sysdeps/nptl/gai_misc.h @@ -0,0 +1,121 @@ +/* Copyright (C) 2006-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +/* We define a special synchronization primitive for AIO. POSIX + conditional variables would be ideal but the pthread_cond_*wait + operations do not return on EINTR. This is a requirement for + correct aio_suspend and lio_listio implementations. */ + +#include +#include +#include +#include + +#define DONT_NEED_GAI_MISC_COND 1 + +#define GAI_MISC_NOTIFY(waitlist) \ + do { \ + if (*waitlist->counterp > 0 && --*waitlist->counterp == 0) \ + lll_futex_wake (waitlist->counterp, 1, LLL_PRIVATE); \ + } while (0) + +#define GAI_MISC_WAIT(result, futex, timeout, cancel) \ + do { \ + volatile int *futexaddr = &futex; \ + int oldval = futex; \ + \ + if (oldval != 0) \ + { \ + pthread_mutex_unlock (&__gai_requests_mutex); \ + \ + int oldtype; \ + if (cancel) \ + oldtype = LIBC_CANCEL_ASYNC (); \ + \ + int status; \ + do \ + { \ + status = lll_futex_timed_wait (futexaddr, oldval, timeout, \ + LLL_PRIVATE); \ + if (status != -EWOULDBLOCK) \ + break; \ + \ + oldval = *futexaddr; \ + } \ + while (oldval != 0); \ + \ + if (cancel) \ + LIBC_CANCEL_RESET (oldtype); \ + \ + if (status == -EINTR) \ + result = EINTR; \ + else if (status == -ETIMEDOUT) \ + result = EAGAIN; \ + else \ + assert (status == 0 || status == -EWOULDBLOCK); \ + \ + pthread_mutex_lock (&__gai_requests_mutex); \ + } \ + } while (0) + + +#define gai_start_notify_thread __gai_start_notify_thread +#define gai_create_helper_thread __gai_create_helper_thread + +extern inline void +__gai_start_notify_thread (void) +{ + sigset_t ss; + sigemptyset (&ss); + INTERNAL_SYSCALL_DECL (err); + INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, NULL, _NSIG / 8); +} + +extern inline int +__gai_create_helper_thread (pthread_t *threadp, void *(*tf) (void *), + void *arg) +{ + pthread_attr_t attr; + + /* Make sure the thread is created detached. */ + pthread_attr_init (&attr); + pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); + + /* The helper thread needs only very little resources. */ + (void) pthread_attr_setstacksize (&attr, + __pthread_get_minstack (&attr) + + 4 * PTHREAD_STACK_MIN); + + /* Block all signals in the helper thread. To do this thoroughly we + temporarily have to block all signals here. */ + sigset_t ss; + sigset_t oss; + sigfillset (&ss); + INTERNAL_SYSCALL_DECL (err); + INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, &oss, _NSIG / 8); + + int ret = pthread_create (threadp, &attr, tf, arg); + + /* Restore the signal mask. */ + INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &oss, NULL, + _NSIG / 8); + + (void) pthread_attr_destroy (&attr); + return ret; +} + +#include_next diff --git a/sysdeps/nptl/librt-cancellation.c b/sysdeps/nptl/librt-cancellation.c new file mode 100644 index 0000000000..e512929fbe --- /dev/null +++ b/sysdeps/nptl/librt-cancellation.c @@ -0,0 +1,24 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include "pthreadP.h" + + +#define __pthread_enable_asynccancel __librt_enable_asynccancel +#define __pthread_disable_asynccancel __librt_disable_asynccancel +#include diff --git a/sysdeps/nptl/malloc-machine.h b/sysdeps/nptl/malloc-machine.h new file mode 100644 index 0000000000..ad480a37d8 --- /dev/null +++ b/sysdeps/nptl/malloc-machine.h @@ -0,0 +1,73 @@ +/* Basic platform-independent macro definitions for mutexes, + thread-specific data and parameters for malloc. + Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef _MALLOC_MACHINE_H +#define _MALLOC_MACHINE_H + +#undef thread_atfork_static + +#include +#include + +__libc_lock_define (typedef, mutex_t) + +#define mutex_init(m) __libc_lock_init (*(m)) +#define mutex_lock(m) __libc_lock_lock (*(m)) +#define mutex_trylock(m) __libc_lock_trylock (*(m)) +#define mutex_unlock(m) __libc_lock_unlock (*(m)) +#define MUTEX_INITIALIZER LLL_LOCK_INITIALIZER + +/* This is defined by newer gcc version unique for each module. */ +extern void *__dso_handle __attribute__ ((__weak__)); + +#include + +#define ATFORK_MEM static struct fork_handler atfork_mem + +#ifdef SHARED +# define thread_atfork(prepare, parent, child) \ + atfork_mem.prepare_handler = prepare; \ + atfork_mem.parent_handler = parent; \ + atfork_mem.child_handler = child; \ + atfork_mem.dso_handle = __dso_handle; \ + atfork_mem.refcntr = 1; \ + __linkin_atfork (&atfork_mem) +#else +# define thread_atfork(prepare, parent, child) \ + atfork_mem.prepare_handler = prepare; \ + atfork_mem.parent_handler = parent; \ + atfork_mem.child_handler = child; \ + atfork_mem.dso_handle = &__dso_handle == NULL ? NULL : __dso_handle; \ + atfork_mem.refcntr = 1; \ + __linkin_atfork (&atfork_mem) +#endif + +/* thread specific data for glibc */ + +#include + +typedef int tsd_key_t[1]; /* no key data structure, libc magic does it */ +__libc_tsd_define (static, void *, MALLOC) /* declaration/common definition */ +#define tsd_key_create(key, destr) ((void) (key)) +#define tsd_setspecific(key, data) __libc_tsd_set (void *, MALLOC, (data)) +#define tsd_getspecific(key, vptr) ((vptr) = __libc_tsd_get (void *, MALLOC)) + +#include + +#endif /* !defined(_MALLOC_MACHINE_H) */ diff --git a/sysdeps/nptl/pthread-functions.h b/sysdeps/nptl/pthread-functions.h new file mode 100644 index 0000000000..631442585a --- /dev/null +++ b/sysdeps/nptl/pthread-functions.h @@ -0,0 +1,117 @@ +/* Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2003. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef _PTHREAD_FUNCTIONS_H +#define _PTHREAD_FUNCTIONS_H 1 + +#include +#include +#include +#include + +struct xid_command; + +/* Data type shared with libc. The libc uses it to pass on calls to + the thread functions. */ +struct pthread_functions +{ + int (*ptr_pthread_attr_destroy) (pthread_attr_t *); + int (*ptr___pthread_attr_init_2_0) (pthread_attr_t *); + int (*ptr___pthread_attr_init_2_1) (pthread_attr_t *); + int (*ptr_pthread_attr_getdetachstate) (const pthread_attr_t *, int *); + int (*ptr_pthread_attr_setdetachstate) (pthread_attr_t *, int); + int (*ptr_pthread_attr_getinheritsched) (const pthread_attr_t *, int *); + int (*ptr_pthread_attr_setinheritsched) (pthread_attr_t *, int); + int (*ptr_pthread_attr_getschedparam) (const pthread_attr_t *, + struct sched_param *); + int (*ptr_pthread_attr_setschedparam) (pthread_attr_t *, + const struct sched_param *); + int (*ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *); + int (*ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int); + int (*ptr_pthread_attr_getscope) (const pthread_attr_t *, int *); + int (*ptr_pthread_attr_setscope) (pthread_attr_t *, int); + int (*ptr_pthread_condattr_destroy) (pthread_condattr_t *); + int (*ptr_pthread_condattr_init) (pthread_condattr_t *); + int (*ptr___pthread_cond_broadcast) (pthread_cond_t *); + int (*ptr___pthread_cond_destroy) (pthread_cond_t *); + int (*ptr___pthread_cond_init) (pthread_cond_t *, + const pthread_condattr_t *); + int (*ptr___pthread_cond_signal) (pthread_cond_t *); + int (*ptr___pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *); + int (*ptr___pthread_cond_timedwait) (pthread_cond_t *, pthread_mutex_t *, + const struct timespec *); + int (*ptr___pthread_cond_broadcast_2_0) (pthread_cond_2_0_t *); + int (*ptr___pthread_cond_destroy_2_0) (pthread_cond_2_0_t *); + int (*ptr___pthread_cond_init_2_0) (pthread_cond_2_0_t *, + const pthread_condattr_t *); + int (*ptr___pthread_cond_signal_2_0) (pthread_cond_2_0_t *); + int (*ptr___pthread_cond_wait_2_0) (pthread_cond_2_0_t *, pthread_mutex_t *); + int (*ptr___pthread_cond_timedwait_2_0) (pthread_cond_2_0_t *, + pthread_mutex_t *, + const struct timespec *); + int (*ptr_pthread_equal) (pthread_t, pthread_t); + void (*ptr___pthread_exit) (void *) __attribute__ ((__noreturn__)); + int (*ptr_pthread_getschedparam) (pthread_t, int *, struct sched_param *); + int (*ptr_pthread_setschedparam) (pthread_t, int, + const struct sched_param *); + int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *); + int (*ptr_pthread_mutex_init) (pthread_mutex_t *, + const pthread_mutexattr_t *); + int (*ptr_pthread_mutex_lock) (pthread_mutex_t *); + int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *); + pthread_t (*ptr_pthread_self) (void); + int (*ptr_pthread_setcancelstate) (int, int *); + int (*ptr_pthread_setcanceltype) (int, int *); + void (*ptr___pthread_cleanup_upto) (__jmp_buf, char *); + int (*ptr___pthread_once) (pthread_once_t *, void (*) (void)); + int (*ptr___pthread_rwlock_rdlock) (pthread_rwlock_t *); + int (*ptr___pthread_rwlock_wrlock) (pthread_rwlock_t *); + int (*ptr___pthread_rwlock_unlock) (pthread_rwlock_t *); + int (*ptr___pthread_key_create) (pthread_key_t *, void (*) (void *)); + void *(*ptr___pthread_getspecific) (pthread_key_t); + int (*ptr___pthread_setspecific) (pthread_key_t, const void *); + void (*ptr__pthread_cleanup_push_defer) (struct _pthread_cleanup_buffer *, + void (*) (void *), void *); + void (*ptr__pthread_cleanup_pop_restore) (struct _pthread_cleanup_buffer *, + int); +#define HAVE_PTR_NTHREADS + unsigned int *ptr_nthreads; + void (*ptr___pthread_unwind) (__pthread_unwind_buf_t *) + __attribute ((noreturn)) __cleanup_fct_attribute; + void (*ptr__nptl_deallocate_tsd) (void); + int (*ptr__nptl_setxid) (struct xid_command *); + void (*ptr_freeres) (void); + void (*ptr_set_robust) (struct pthread *); +}; + +/* Variable in libc.so. */ +extern struct pthread_functions __libc_pthread_functions attribute_hidden; +extern int __libc_pthread_functions_init attribute_hidden; + +#ifdef PTR_DEMANGLE +# define PTHFCT_CALL(fct, params) \ + ({ __typeof (__libc_pthread_functions.fct) __p; \ + __p = __libc_pthread_functions.fct; \ + PTR_DEMANGLE (__p); \ + __p params; }) +#else +# define PTHFCT_CALL(fct, params) \ + __libc_pthread_functions.fct params +#endif + +#endif /* pthread-functions.h */ diff --git a/sysdeps/nptl/pthread.h b/sysdeps/nptl/pthread.h new file mode 100644 index 0000000000..40a3e215cc --- /dev/null +++ b/sysdeps/nptl/pthread.h @@ -0,0 +1,1163 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef _PTHREAD_H +#define _PTHREAD_H 1 + +#include +#include +#include +#include + +#include +#include +#include + + +/* Detach state. */ +enum +{ + PTHREAD_CREATE_JOINABLE, +#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE + PTHREAD_CREATE_DETACHED +#define PTHREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED +}; + + +/* Mutex types. */ +enum +{ + PTHREAD_MUTEX_TIMED_NP, + PTHREAD_MUTEX_RECURSIVE_NP, + PTHREAD_MUTEX_ERRORCHECK_NP, + PTHREAD_MUTEX_ADAPTIVE_NP +#if defined __USE_UNIX98 || defined __USE_XOPEN2K8 + , + PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP, + PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP, + PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP, + PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL +#endif +#ifdef __USE_GNU + /* For compatibility. */ + , PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_TIMED_NP +#endif +}; + + +#ifdef __USE_XOPEN2K +/* Robust mutex or not flags. */ +enum +{ + PTHREAD_MUTEX_STALLED, + PTHREAD_MUTEX_STALLED_NP = PTHREAD_MUTEX_STALLED, + PTHREAD_MUTEX_ROBUST, + PTHREAD_MUTEX_ROBUST_NP = PTHREAD_MUTEX_ROBUST +}; +#endif + + +#if defined __USE_POSIX199506 || defined __USE_UNIX98 +/* Mutex protocols. */ +enum +{ + PTHREAD_PRIO_NONE, + PTHREAD_PRIO_INHERIT, + PTHREAD_PRIO_PROTECT +}; +#endif + + +#ifdef __PTHREAD_MUTEX_HAVE_PREV +# define PTHREAD_MUTEX_INITIALIZER \ + { { 0, 0, 0, 0, 0, __PTHREAD_SPINS, { 0, 0 } } } +# ifdef __USE_GNU +# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \ + { { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __PTHREAD_SPINS, { 0, 0 } } } +# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \ + { { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __PTHREAD_SPINS, { 0, 0 } } } +# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ + { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } } +# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ + { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } } + +# endif +#else +# define PTHREAD_MUTEX_INITIALIZER \ + { { 0, 0, 0, 0, 0, { __PTHREAD_SPINS } } } +# ifdef __USE_GNU +# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \ + { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { __PTHREAD_SPINS } } } +# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \ + { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { __PTHREAD_SPINS } } } +# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ + { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { __PTHREAD_SPINS } } } + +# endif +#endif + + +/* Read-write lock types. */ +#if defined __USE_UNIX98 || defined __USE_XOPEN2K +enum +{ + PTHREAD_RWLOCK_PREFER_READER_NP, + PTHREAD_RWLOCK_PREFER_WRITER_NP, + PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, + PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_READER_NP +}; + +/* Define __PTHREAD_RWLOCK_INT_FLAGS_SHARED to 1 if pthread_rwlock_t + has the shared field. All 64-bit architectures have the shared field + in pthread_rwlock_t. */ +#ifndef __PTHREAD_RWLOCK_INT_FLAGS_SHARED +# if __WORDSIZE == 64 +# define __PTHREAD_RWLOCK_INT_FLAGS_SHARED 1 +# endif +#endif + +/* Read-write lock initializers. */ +# define PTHREAD_RWLOCK_INITIALIZER \ + { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } } +# ifdef __USE_GNU +# ifdef __PTHREAD_RWLOCK_INT_FLAGS_SHARED +# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \ + { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ + PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP } } +# else +# if __BYTE_ORDER == __LITTLE_ENDIAN +# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \ + { { 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, \ + 0, 0, 0, 0 } } +# else +# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \ + { { 0, 0, 0, 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,\ + 0 } } +# endif +# endif +# endif +#endif /* Unix98 or XOpen2K */ + + +/* Scheduler inheritance. */ +enum +{ + PTHREAD_INHERIT_SCHED, +#define PTHREAD_INHERIT_SCHED PTHREAD_INHERIT_SCHED + PTHREAD_EXPLICIT_SCHED +#define PTHREAD_EXPLICIT_SCHED PTHREAD_EXPLICIT_SCHED +}; + + +/* Scope handling. */ +enum +{ + PTHREAD_SCOPE_SYSTEM, +#define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_SYSTEM + PTHREAD_SCOPE_PROCESS +#define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_PROCESS +}; + + +/* Process shared or private flag. */ +enum +{ + PTHREAD_PROCESS_PRIVATE, +#define PTHREAD_PROCESS_PRIVATE PTHREAD_PROCESS_PRIVATE + PTHREAD_PROCESS_SHARED +#define PTHREAD_PROCESS_SHARED PTHREAD_PROCESS_SHARED +}; + + + +/* Conditional variable handling. */ +#define PTHREAD_COND_INITIALIZER { { 0, 0, 0, 0, 0, (void *) 0, 0, 0 } } + + +/* Cleanup buffers */ +struct _pthread_cleanup_buffer +{ + void (*__routine) (void *); /* Function to call. */ + void *__arg; /* Its argument. */ + int __canceltype; /* Saved cancellation type. */ + struct _pthread_cleanup_buffer *__prev; /* Chaining of cleanup functions. */ +}; + +/* Cancellation */ +enum +{ + PTHREAD_CANCEL_ENABLE, +#define PTHREAD_CANCEL_ENABLE PTHREAD_CANCEL_ENABLE + PTHREAD_CANCEL_DISABLE +#define PTHREAD_CANCEL_DISABLE PTHREAD_CANCEL_DISABLE +}; +enum +{ + PTHREAD_CANCEL_DEFERRED, +#define PTHREAD_CANCEL_DEFERRED PTHREAD_CANCEL_DEFERRED + PTHREAD_CANCEL_ASYNCHRONOUS +#define PTHREAD_CANCEL_ASYNCHRONOUS PTHREAD_CANCEL_ASYNCHRONOUS +}; +#define PTHREAD_CANCELED ((void *) -1) + + +/* Single execution handling. */ +#define PTHREAD_ONCE_INIT 0 + + +#ifdef __USE_XOPEN2K +/* Value returned by 'pthread_barrier_wait' for one of the threads after + the required number of threads have called this function. + -1 is distinct from 0 and all errno constants */ +# define PTHREAD_BARRIER_SERIAL_THREAD -1 +#endif + + +__BEGIN_DECLS + +/* Create a new thread, starting with execution of START-ROUTINE + getting passed ARG. Creation attributed come from ATTR. The new + handle is stored in *NEWTHREAD. */ +extern int pthread_create (pthread_t *__restrict __newthread, + const pthread_attr_t *__restrict __attr, + void *(*__start_routine) (void *), + void *__restrict __arg) __THROWNL __nonnull ((1, 3)); + +/* Terminate calling thread. + + The registered cleanup handlers are called via exception handling + so we cannot mark this function with __THROW.*/ +extern void pthread_exit (void *__retval) __attribute__ ((__noreturn__)); + +/* Make calling thread wait for termination of the thread TH. The + exit status of the thread is stored in *THREAD_RETURN, if THREAD_RETURN + is not NULL. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern int pthread_join (pthread_t __th, void **__thread_return); + +#ifdef __USE_GNU +/* Check whether thread TH has terminated. If yes return the status of + the thread in *THREAD_RETURN, if THREAD_RETURN is not NULL. */ +extern int pthread_tryjoin_np (pthread_t __th, void **__thread_return) __THROW; + +/* Make calling thread wait for termination of the thread TH, but only + until TIMEOUT. The exit status of the thread is stored in + *THREAD_RETURN, if THREAD_RETURN is not NULL. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern int pthread_timedjoin_np (pthread_t __th, void **__thread_return, + const struct timespec *__abstime); +#endif + +/* Indicate that the thread TH is never to be joined with PTHREAD_JOIN. + The resources of TH will therefore be freed immediately when it + terminates, instead of waiting for another thread to perform PTHREAD_JOIN + on it. */ +extern int pthread_detach (pthread_t __th) __THROW; + + +/* Obtain the identifier of the current thread. */ +extern pthread_t pthread_self (void) __THROW __attribute__ ((__const__)); + +/* Compare two thread identifiers. */ +extern int pthread_equal (pthread_t __thread1, pthread_t __thread2) + __THROW __attribute__ ((__const__)); + + +/* Thread attribute handling. */ + +/* Initialize thread attribute *ATTR with default attributes + (detachstate is PTHREAD_JOINABLE, scheduling policy is SCHED_OTHER, + no user-provided stack). */ +extern int pthread_attr_init (pthread_attr_t *__attr) __THROW __nonnull ((1)); + +/* Destroy thread attribute *ATTR. */ +extern int pthread_attr_destroy (pthread_attr_t *__attr) + __THROW __nonnull ((1)); + +/* Get detach state attribute. */ +extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr, + int *__detachstate) + __THROW __nonnull ((1, 2)); + +/* Set detach state attribute. */ +extern int pthread_attr_setdetachstate (pthread_attr_t *__attr, + int __detachstate) + __THROW __nonnull ((1)); + + +/* Get the size of the guard area created for stack overflow protection. */ +extern int pthread_attr_getguardsize (const pthread_attr_t *__attr, + size_t *__guardsize) + __THROW __nonnull ((1, 2)); + +/* Set the size of the guard area created for stack overflow protection. */ +extern int pthread_attr_setguardsize (pthread_attr_t *__attr, + size_t __guardsize) + __THROW __nonnull ((1)); + + +/* Return in *PARAM the scheduling parameters of *ATTR. */ +extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr, + struct sched_param *__restrict __param) + __THROW __nonnull ((1, 2)); + +/* Set scheduling parameters (priority, etc) in *ATTR according to PARAM. */ +extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr, + const struct sched_param *__restrict + __param) __THROW __nonnull ((1, 2)); + +/* Return in *POLICY the scheduling policy of *ATTR. */ +extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict + __attr, int *__restrict __policy) + __THROW __nonnull ((1, 2)); + +/* Set scheduling policy in *ATTR according to POLICY. */ +extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy) + __THROW __nonnull ((1)); + +/* Return in *INHERIT the scheduling inheritance mode of *ATTR. */ +extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict + __attr, int *__restrict __inherit) + __THROW __nonnull ((1, 2)); + +/* Set scheduling inheritance mode in *ATTR according to INHERIT. */ +extern int pthread_attr_setinheritsched (pthread_attr_t *__attr, + int __inherit) + __THROW __nonnull ((1)); + + +/* Return in *SCOPE the scheduling contention scope of *ATTR. */ +extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr, + int *__restrict __scope) + __THROW __nonnull ((1, 2)); + +/* Set scheduling contention scope in *ATTR according to SCOPE. */ +extern int pthread_attr_setscope (pthread_attr_t *__attr, int __scope) + __THROW __nonnull ((1)); + +/* Return the previously set address for the stack. */ +extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict + __attr, void **__restrict __stackaddr) + __THROW __nonnull ((1, 2)) __attribute_deprecated__; + +/* Set the starting address of the stack of the thread to be created. + Depending on whether the stack grows up or down the value must either + be higher or lower than all the address in the memory block. The + minimal size of the block must be PTHREAD_STACK_MIN. */ +extern int pthread_attr_setstackaddr (pthread_attr_t *__attr, + void *__stackaddr) + __THROW __nonnull ((1)) __attribute_deprecated__; + +/* Return the currently used minimal stack size. */ +extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict + __attr, size_t *__restrict __stacksize) + __THROW __nonnull ((1, 2)); + +/* Add information about the minimum stack size needed for the thread + to be started. This size must never be less than PTHREAD_STACK_MIN + and must also not exceed the system limits. */ +extern int pthread_attr_setstacksize (pthread_attr_t *__attr, + size_t __stacksize) + __THROW __nonnull ((1)); + +#ifdef __USE_XOPEN2K +/* Return the previously set address for the stack. */ +extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr, + void **__restrict __stackaddr, + size_t *__restrict __stacksize) + __THROW __nonnull ((1, 2, 3)); + +/* The following two interfaces are intended to replace the last two. They + require setting the address as well as the size since only setting the + address will make the implementation on some architectures impossible. */ +extern int pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr, + size_t __stacksize) __THROW __nonnull ((1)); +#endif + +#ifdef __USE_GNU +/* Thread created with attribute ATTR will be limited to run only on + the processors represented in CPUSET. */ +extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr, + size_t __cpusetsize, + const cpu_set_t *__cpuset) + __THROW __nonnull ((1, 3)); + +/* Get bit set in CPUSET representing the processors threads created with + ATTR can run on. */ +extern int pthread_attr_getaffinity_np (const pthread_attr_t *__attr, + size_t __cpusetsize, + cpu_set_t *__cpuset) + __THROW __nonnull ((1, 3)); + +/* Get the default attributes used by pthread_create in this process. */ +extern int pthread_getattr_default_np (pthread_attr_t *__attr) + __THROW __nonnull ((1)); + +/* Set the default attributes to be used by pthread_create in this + process. */ +extern int pthread_setattr_default_np (const pthread_attr_t *__attr) + __THROW __nonnull ((1)); + +/* Initialize thread attribute *ATTR with attributes corresponding to the + already running thread TH. It shall be called on uninitialized ATTR + and destroyed with pthread_attr_destroy when no longer needed. */ +extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr) + __THROW __nonnull ((2)); +#endif + + +/* Functions for scheduling control. */ + +/* Set the scheduling parameters for TARGET_THREAD according to POLICY + and *PARAM. */ +extern int pthread_setschedparam (pthread_t __target_thread, int __policy, + const struct sched_param *__param) + __THROW __nonnull ((3)); + +/* Return in *POLICY and *PARAM the scheduling parameters for TARGET_THREAD. */ +extern int pthread_getschedparam (pthread_t __target_thread, + int *__restrict __policy, + struct sched_param *__restrict __param) + __THROW __nonnull ((2, 3)); + +/* Set the scheduling priority for TARGET_THREAD. */ +extern int pthread_setschedprio (pthread_t __target_thread, int __prio) + __THROW; + + +#ifdef __USE_GNU +/* Get thread name visible in the kernel and its interfaces. */ +extern int pthread_getname_np (pthread_t __target_thread, char *__buf, + size_t __buflen) + __THROW __nonnull ((2)); + +/* Set thread name visible in the kernel and its interfaces. */ +extern int pthread_setname_np (pthread_t __target_thread, const char *__name) + __THROW __nonnull ((2)); +#endif + + +#ifdef __USE_UNIX98 +/* Determine level of concurrency. */ +extern int pthread_getconcurrency (void) __THROW; + +/* Set new concurrency level to LEVEL. */ +extern int pthread_setconcurrency (int __level) __THROW; +#endif + +#ifdef __USE_GNU +/* Yield the processor to another thread or process. + This function is similar to the POSIX `sched_yield' function but + might be differently implemented in the case of a m-on-n thread + implementation. */ +extern int pthread_yield (void) __THROW; + + +/* Limit specified thread TH to run only on the processors represented + in CPUSET. */ +extern int pthread_setaffinity_np (pthread_t __th, size_t __cpusetsize, + const cpu_set_t *__cpuset) + __THROW __nonnull ((3)); + +/* Get bit set in CPUSET representing the processors TH can run on. */ +extern int pthread_getaffinity_np (pthread_t __th, size_t __cpusetsize, + cpu_set_t *__cpuset) + __THROW __nonnull ((3)); +#endif + + +/* Functions for handling initialization. */ + +/* Guarantee that the initialization function INIT_ROUTINE will be called + only once, even if pthread_once is executed several times with the + same ONCE_CONTROL argument. ONCE_CONTROL must point to a static or + extern variable initialized to PTHREAD_ONCE_INIT. + + The initialization functions might throw exception which is why + this function is not marked with __THROW. */ +extern int pthread_once (pthread_once_t *__once_control, + void (*__init_routine) (void)) __nonnull ((1, 2)); + + +/* Functions for handling cancellation. + + Note that these functions are explicitly not marked to not throw an + exception in C++ code. If cancellation is implemented by unwinding + this is necessary to have the compiler generate the unwind information. */ + +/* Set cancelability state of current thread to STATE, returning old + state in *OLDSTATE if OLDSTATE is not NULL. */ +extern int pthread_setcancelstate (int __state, int *__oldstate); + +/* Set cancellation state of current thread to TYPE, returning the old + type in *OLDTYPE if OLDTYPE is not NULL. */ +extern int pthread_setcanceltype (int __type, int *__oldtype); + +/* Cancel THREAD immediately or at the next possibility. */ +extern int pthread_cancel (pthread_t __th); + +/* Test for pending cancellation for the current thread and terminate + the thread as per pthread_exit(PTHREAD_CANCELED) if it has been + cancelled. */ +extern void pthread_testcancel (void); + + +/* Cancellation handling with integration into exception handling. */ + +typedef struct +{ + struct + { + __jmp_buf __cancel_jmp_buf; + int __mask_was_saved; + } __cancel_jmp_buf[1]; + void *__pad[4]; +} __pthread_unwind_buf_t __attribute__ ((__aligned__)); + +/* No special attributes by default. */ +#ifndef __cleanup_fct_attribute +# define __cleanup_fct_attribute +#endif + + +/* Structure to hold the cleanup handler information. */ +struct __pthread_cleanup_frame +{ + void (*__cancel_routine) (void *); + void *__cancel_arg; + int __do_it; + int __cancel_type; +}; + +#if defined __GNUC__ && defined __EXCEPTIONS +# ifdef __cplusplus +/* Class to handle cancellation handler invocation. */ +class __pthread_cleanup_class +{ + void (*__cancel_routine) (void *); + void *__cancel_arg; + int __do_it; + int __cancel_type; + + public: + __pthread_cleanup_class (void (*__fct) (void *), void *__arg) + : __cancel_routine (__fct), __cancel_arg (__arg), __do_it (1) { } + ~__pthread_cleanup_class () { if (__do_it) __cancel_routine (__cancel_arg); } + void __setdoit (int __newval) { __do_it = __newval; } + void __defer () { pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, + &__cancel_type); } + void __restore () const { pthread_setcanceltype (__cancel_type, 0); } +}; + +/* Install a cleanup handler: ROUTINE will be called with arguments ARG + when the thread is canceled or calls pthread_exit. ROUTINE will also + be called with arguments ARG when the matching pthread_cleanup_pop + is executed with non-zero EXECUTE argument. + + pthread_cleanup_push and pthread_cleanup_pop are macros and must always + be used in matching pairs at the same nesting level of braces. */ +# define pthread_cleanup_push(routine, arg) \ + do { \ + __pthread_cleanup_class __clframe (routine, arg) + +/* Remove a cleanup handler installed by the matching pthread_cleanup_push. + If EXECUTE is non-zero, the handler function is called. */ +# define pthread_cleanup_pop(execute) \ + __clframe.__setdoit (execute); \ + } while (0) + +# ifdef __USE_GNU +/* Install a cleanup handler as pthread_cleanup_push does, but also + saves the current cancellation type and sets it to deferred + cancellation. */ +# define pthread_cleanup_push_defer_np(routine, arg) \ + do { \ + __pthread_cleanup_class __clframe (routine, arg); \ + __clframe.__defer () + +/* Remove a cleanup handler as pthread_cleanup_pop does, but also + restores the cancellation type that was in effect when the matching + pthread_cleanup_push_defer was called. */ +# define pthread_cleanup_pop_restore_np(execute) \ + __clframe.__restore (); \ + __clframe.__setdoit (execute); \ + } while (0) +# endif +# else +/* Function called to call the cleanup handler. As an extern inline + function the compiler is free to decide inlining the change when + needed or fall back on the copy which must exist somewhere + else. */ +__extern_inline void +__pthread_cleanup_routine (struct __pthread_cleanup_frame *__frame) +{ + if (__frame->__do_it) + __frame->__cancel_routine (__frame->__cancel_arg); +} + +/* Install a cleanup handler: ROUTINE will be called with arguments ARG + when the thread is canceled or calls pthread_exit. ROUTINE will also + be called with arguments ARG when the matching pthread_cleanup_pop + is executed with non-zero EXECUTE argument. + + pthread_cleanup_push and pthread_cleanup_pop are macros and must always + be used in matching pairs at the same nesting level of braces. */ +# define pthread_cleanup_push(routine, arg) \ + do { \ + struct __pthread_cleanup_frame __clframe \ + __attribute__ ((__cleanup__ (__pthread_cleanup_routine))) \ + = { .__cancel_routine = (routine), .__cancel_arg = (arg), \ + .__do_it = 1 }; + +/* Remove a cleanup handler installed by the matching pthread_cleanup_push. + If EXECUTE is non-zero, the handler function is called. */ +# define pthread_cleanup_pop(execute) \ + __clframe.__do_it = (execute); \ + } while (0) + +# ifdef __USE_GNU +/* Install a cleanup handler as pthread_cleanup_push does, but also + saves the current cancellation type and sets it to deferred + cancellation. */ +# define pthread_cleanup_push_defer_np(routine, arg) \ + do { \ + struct __pthread_cleanup_frame __clframe \ + __attribute__ ((__cleanup__ (__pthread_cleanup_routine))) \ + = { .__cancel_routine = (routine), .__cancel_arg = (arg), \ + .__do_it = 1 }; \ + (void) pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, \ + &__clframe.__cancel_type) + +/* Remove a cleanup handler as pthread_cleanup_pop does, but also + restores the cancellation type that was in effect when the matching + pthread_cleanup_push_defer was called. */ +# define pthread_cleanup_pop_restore_np(execute) \ + (void) pthread_setcanceltype (__clframe.__cancel_type, NULL); \ + __clframe.__do_it = (execute); \ + } while (0) +# endif +# endif +#else +/* Install a cleanup handler: ROUTINE will be called with arguments ARG + when the thread is canceled or calls pthread_exit. ROUTINE will also + be called with arguments ARG when the matching pthread_cleanup_pop + is executed with non-zero EXECUTE argument. + + pthread_cleanup_push and pthread_cleanup_pop are macros and must always + be used in matching pairs at the same nesting level of braces. */ +# define pthread_cleanup_push(routine, arg) \ + do { \ + __pthread_unwind_buf_t __cancel_buf; \ + void (*__cancel_routine) (void *) = (routine); \ + void *__cancel_arg = (arg); \ + int __not_first_call = __sigsetjmp ((struct __jmp_buf_tag *) (void *) \ + __cancel_buf.__cancel_jmp_buf, 0); \ + if (__glibc_unlikely (__not_first_call)) \ + { \ + __cancel_routine (__cancel_arg); \ + __pthread_unwind_next (&__cancel_buf); \ + /* NOTREACHED */ \ + } \ + \ + __pthread_register_cancel (&__cancel_buf); \ + do { +extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf) + __cleanup_fct_attribute; + +/* Remove a cleanup handler installed by the matching pthread_cleanup_push. + If EXECUTE is non-zero, the handler function is called. */ +# define pthread_cleanup_pop(execute) \ + do { } while (0);/* Empty to allow label before pthread_cleanup_pop. */\ + } while (0); \ + __pthread_unregister_cancel (&__cancel_buf); \ + if (execute) \ + __cancel_routine (__cancel_arg); \ + } while (0) +extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf) + __cleanup_fct_attribute; + +# ifdef __USE_GNU +/* Install a cleanup handler as pthread_cleanup_push does, but also + saves the current cancellation type and sets it to deferred + cancellation. */ +# define pthread_cleanup_push_defer_np(routine, arg) \ + do { \ + __pthread_unwind_buf_t __cancel_buf; \ + void (*__cancel_routine) (void *) = (routine); \ + void *__cancel_arg = (arg); \ + int __not_first_call = __sigsetjmp ((struct __jmp_buf_tag *) (void *) \ + __cancel_buf.__cancel_jmp_buf, 0); \ + if (__glibc_unlikely (__not_first_call)) \ + { \ + __cancel_routine (__cancel_arg); \ + __pthread_unwind_next (&__cancel_buf); \ + /* NOTREACHED */ \ + } \ + \ + __pthread_register_cancel_defer (&__cancel_buf); \ + do { +extern void __pthread_register_cancel_defer (__pthread_unwind_buf_t *__buf) + __cleanup_fct_attribute; + +/* Remove a cleanup handler as pthread_cleanup_pop does, but also + restores the cancellation type that was in effect when the matching + pthread_cleanup_push_defer was called. */ +# define pthread_cleanup_pop_restore_np(execute) \ + do { } while (0);/* Empty to allow label before pthread_cleanup_pop. */\ + } while (0); \ + __pthread_unregister_cancel_restore (&__cancel_buf); \ + if (execute) \ + __cancel_routine (__cancel_arg); \ + } while (0) +extern void __pthread_unregister_cancel_restore (__pthread_unwind_buf_t *__buf) + __cleanup_fct_attribute; +# endif + +/* Internal interface to initiate cleanup. */ +extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf) + __cleanup_fct_attribute __attribute__ ((__noreturn__)) +# ifndef SHARED + __attribute__ ((__weak__)) +# endif + ; +#endif + +/* Function used in the macros. */ +struct __jmp_buf_tag; +extern int __sigsetjmp (struct __jmp_buf_tag *__env, int __savemask) __THROWNL; + + +/* Mutex handling. */ + +/* Initialize a mutex. */ +extern int pthread_mutex_init (pthread_mutex_t *__mutex, + const pthread_mutexattr_t *__mutexattr) + __THROW __nonnull ((1)); + +/* Destroy a mutex. */ +extern int pthread_mutex_destroy (pthread_mutex_t *__mutex) + __THROW __nonnull ((1)); + +/* Try locking a mutex. */ +extern int pthread_mutex_trylock (pthread_mutex_t *__mutex) + __THROWNL __nonnull ((1)); + +/* Lock a mutex. */ +extern int pthread_mutex_lock (pthread_mutex_t *__mutex) + __THROWNL __nonnull ((1)); + +#ifdef __USE_XOPEN2K +/* Wait until lock becomes available, or specified time passes. */ +extern int pthread_mutex_timedlock (pthread_mutex_t *__restrict __mutex, + const struct timespec *__restrict + __abstime) __THROWNL __nonnull ((1, 2)); +#endif + +/* Unlock a mutex. */ +extern int pthread_mutex_unlock (pthread_mutex_t *__mutex) + __THROWNL __nonnull ((1)); + + +/* Get the priority ceiling of MUTEX. */ +extern int pthread_mutex_getprioceiling (const pthread_mutex_t * + __restrict __mutex, + int *__restrict __prioceiling) + __THROW __nonnull ((1, 2)); + +/* Set the priority ceiling of MUTEX to PRIOCEILING, return old + priority ceiling value in *OLD_CEILING. */ +extern int pthread_mutex_setprioceiling (pthread_mutex_t *__restrict __mutex, + int __prioceiling, + int *__restrict __old_ceiling) + __THROW __nonnull ((1, 3)); + + +#ifdef __USE_XOPEN2K8 +/* Declare the state protected by MUTEX as consistent. */ +extern int pthread_mutex_consistent (pthread_mutex_t *__mutex) + __THROW __nonnull ((1)); +# ifdef __USE_GNU +extern int pthread_mutex_consistent_np (pthread_mutex_t *__mutex) + __THROW __nonnull ((1)); +# endif +#endif + + +/* Functions for handling mutex attributes. */ + +/* Initialize mutex attribute object ATTR with default attributes + (kind is PTHREAD_MUTEX_TIMED_NP). */ +extern int pthread_mutexattr_init (pthread_mutexattr_t *__attr) + __THROW __nonnull ((1)); + +/* Destroy mutex attribute object ATTR. */ +extern int pthread_mutexattr_destroy (pthread_mutexattr_t *__attr) + __THROW __nonnull ((1)); + +/* Get the process-shared flag of the mutex attribute ATTR. */ +extern int pthread_mutexattr_getpshared (const pthread_mutexattr_t * + __restrict __attr, + int *__restrict __pshared) + __THROW __nonnull ((1, 2)); + +/* Set the process-shared flag of the mutex attribute ATTR. */ +extern int pthread_mutexattr_setpshared (pthread_mutexattr_t *__attr, + int __pshared) + __THROW __nonnull ((1)); + +#if defined __USE_UNIX98 || defined __USE_XOPEN2K8 +/* Return in *KIND the mutex kind attribute in *ATTR. */ +extern int pthread_mutexattr_gettype (const pthread_mutexattr_t *__restrict + __attr, int *__restrict __kind) + __THROW __nonnull ((1, 2)); + +/* Set the mutex kind attribute in *ATTR to KIND (either PTHREAD_MUTEX_NORMAL, + PTHREAD_MUTEX_RECURSIVE, PTHREAD_MUTEX_ERRORCHECK, or + PTHREAD_MUTEX_DEFAULT). */ +extern int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind) + __THROW __nonnull ((1)); +#endif + +/* Return in *PROTOCOL the mutex protocol attribute in *ATTR. */ +extern int pthread_mutexattr_getprotocol (const pthread_mutexattr_t * + __restrict __attr, + int *__restrict __protocol) + __THROW __nonnull ((1, 2)); + +/* Set the mutex protocol attribute in *ATTR to PROTOCOL (either + PTHREAD_PRIO_NONE, PTHREAD_PRIO_INHERIT, or PTHREAD_PRIO_PROTECT). */ +extern int pthread_mutexattr_setprotocol (pthread_mutexattr_t *__attr, + int __protocol) + __THROW __nonnull ((1)); + +/* Return in *PRIOCEILING the mutex prioceiling attribute in *ATTR. */ +extern int pthread_mutexattr_getprioceiling (const pthread_mutexattr_t * + __restrict __attr, + int *__restrict __prioceiling) + __THROW __nonnull ((1, 2)); + +/* Set the mutex prioceiling attribute in *ATTR to PRIOCEILING. */ +extern int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *__attr, + int __prioceiling) + __THROW __nonnull ((1)); + +#ifdef __USE_XOPEN2K +/* Get the robustness flag of the mutex attribute ATTR. */ +extern int pthread_mutexattr_getrobust (const pthread_mutexattr_t *__attr, + int *__robustness) + __THROW __nonnull ((1, 2)); +# ifdef __USE_GNU +extern int pthread_mutexattr_getrobust_np (const pthread_mutexattr_t *__attr, + int *__robustness) + __THROW __nonnull ((1, 2)); +# endif + +/* Set the robustness flag of the mutex attribute ATTR. */ +extern int pthread_mutexattr_setrobust (pthread_mutexattr_t *__attr, + int __robustness) + __THROW __nonnull ((1)); +# ifdef __USE_GNU +extern int pthread_mutexattr_setrobust_np (pthread_mutexattr_t *__attr, + int __robustness) + __THROW __nonnull ((1)); +# endif +#endif + + +#if defined __USE_UNIX98 || defined __USE_XOPEN2K +/* Functions for handling read-write locks. */ + +/* Initialize read-write lock RWLOCK using attributes ATTR, or use + the default values if later is NULL. */ +extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock, + const pthread_rwlockattr_t *__restrict + __attr) __THROW __nonnull ((1)); + +/* Destroy read-write lock RWLOCK. */ +extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock) + __THROW __nonnull ((1)); + +/* Acquire read lock for RWLOCK. */ +extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock) + __THROWNL __nonnull ((1)); + +/* Try to acquire read lock for RWLOCK. */ +extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock) + __THROWNL __nonnull ((1)); + +# ifdef __USE_XOPEN2K +/* Try to acquire read lock for RWLOCK or return after specfied time. */ +extern int pthread_rwlock_timedrdlock (pthread_rwlock_t *__restrict __rwlock, + const struct timespec *__restrict + __abstime) __THROWNL __nonnull ((1, 2)); +# endif + +/* Acquire write lock for RWLOCK. */ +extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock) + __THROWNL __nonnull ((1)); + +/* Try to acquire write lock for RWLOCK. */ +extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock) + __THROWNL __nonnull ((1)); + +# ifdef __USE_XOPEN2K +/* Try to acquire write lock for RWLOCK or return after specfied time. */ +extern int pthread_rwlock_timedwrlock (pthread_rwlock_t *__restrict __rwlock, + const struct timespec *__restrict + __abstime) __THROWNL __nonnull ((1, 2)); +# endif + +/* Unlock RWLOCK. */ +extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock) + __THROWNL __nonnull ((1)); + + +/* Functions for handling read-write lock attributes. */ + +/* Initialize attribute object ATTR with default values. */ +extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr) + __THROW __nonnull ((1)); + +/* Destroy attribute object ATTR. */ +extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr) + __THROW __nonnull ((1)); + +/* Return current setting of process-shared attribute of ATTR in PSHARED. */ +extern int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t * + __restrict __attr, + int *__restrict __pshared) + __THROW __nonnull ((1, 2)); + +/* Set process-shared attribute of ATTR to PSHARED. */ +extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr, + int __pshared) + __THROW __nonnull ((1)); + +/* Return current setting of reader/writer preference. */ +extern int pthread_rwlockattr_getkind_np (const pthread_rwlockattr_t * + __restrict __attr, + int *__restrict __pref) + __THROW __nonnull ((1, 2)); + +/* Set reader/write preference. */ +extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr, + int __pref) __THROW __nonnull ((1)); +#endif + + +/* Functions for handling conditional variables. */ + +/* Initialize condition variable COND using attributes ATTR, or use + the default values if later is NULL. */ +extern int pthread_cond_init (pthread_cond_t *__restrict __cond, + const pthread_condattr_t *__restrict __cond_attr) + __THROW __nonnull ((1)); + +/* Destroy condition variable COND. */ +extern int pthread_cond_destroy (pthread_cond_t *__cond) + __THROW __nonnull ((1)); + +/* Wake up one thread waiting for condition variable COND. */ +extern int pthread_cond_signal (pthread_cond_t *__cond) + __THROWNL __nonnull ((1)); + +/* Wake up all threads waiting for condition variables COND. */ +extern int pthread_cond_broadcast (pthread_cond_t *__cond) + __THROWNL __nonnull ((1)); + +/* Wait for condition variable COND to be signaled or broadcast. + MUTEX is assumed to be locked before. + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern int pthread_cond_wait (pthread_cond_t *__restrict __cond, + pthread_mutex_t *__restrict __mutex) + __nonnull ((1, 2)); + +/* Wait for condition variable COND to be signaled or broadcast until + ABSTIME. MUTEX is assumed to be locked before. ABSTIME is an + absolute time specification; zero is the beginning of the epoch + (00:00:00 GMT, January 1, 1970). + + This function is a cancellation point and therefore not marked with + __THROW. */ +extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond, + pthread_mutex_t *__restrict __mutex, + const struct timespec *__restrict __abstime) + __nonnull ((1, 2, 3)); + +/* Functions for handling condition variable attributes. */ + +/* Initialize condition variable attribute ATTR. */ +extern int pthread_condattr_init (pthread_condattr_t *__attr) + __THROW __nonnull ((1)); + +/* Destroy condition variable attribute ATTR. */ +extern int pthread_condattr_destroy (pthread_condattr_t *__attr) + __THROW __nonnull ((1)); + +/* Get the process-shared flag of the condition variable attribute ATTR. */ +extern int pthread_condattr_getpshared (const pthread_condattr_t * + __restrict __attr, + int *__restrict __pshared) + __THROW __nonnull ((1, 2)); + +/* Set the process-shared flag of the condition variable attribute ATTR. */ +extern int pthread_condattr_setpshared (pthread_condattr_t *__attr, + int __pshared) __THROW __nonnull ((1)); + +#ifdef __USE_XOPEN2K +/* Get the clock selected for the condition variable attribute ATTR. */ +extern int pthread_condattr_getclock (const pthread_condattr_t * + __restrict __attr, + __clockid_t *__restrict __clock_id) + __THROW __nonnull ((1, 2)); + +/* Set the clock selected for the condition variable attribute ATTR. */ +extern int pthread_condattr_setclock (pthread_condattr_t *__attr, + __clockid_t __clock_id) + __THROW __nonnull ((1)); +#endif + + +#ifdef __USE_XOPEN2K +/* Functions to handle spinlocks. */ + +/* Initialize the spinlock LOCK. If PSHARED is nonzero the spinlock can + be shared between different processes. */ +extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared) + __THROW __nonnull ((1)); + +/* Destroy the spinlock LOCK. */ +extern int pthread_spin_destroy (pthread_spinlock_t *__lock) + __THROW __nonnull ((1)); + +/* Wait until spinlock LOCK is retrieved. */ +extern int pthread_spin_lock (pthread_spinlock_t *__lock) + __THROWNL __nonnull ((1)); + +/* Try to lock spinlock LOCK. */ +extern int pthread_spin_trylock (pthread_spinlock_t *__lock) + __THROWNL __nonnull ((1)); + +/* Release spinlock LOCK. */ +extern int pthread_spin_unlock (pthread_spinlock_t *__lock) + __THROWNL __nonnull ((1)); + + +/* Functions to handle barriers. */ + +/* Initialize BARRIER with the attributes in ATTR. The barrier is + opened when COUNT waiters arrived. */ +extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier, + const pthread_barrierattr_t *__restrict + __attr, unsigned int __count) + __THROW __nonnull ((1)); + +/* Destroy a previously dynamically initialized barrier BARRIER. */ +extern int pthread_barrier_destroy (pthread_barrier_t *__barrier) + __THROW __nonnull ((1)); + +/* Wait on barrier BARRIER. */ +extern int pthread_barrier_wait (pthread_barrier_t *__barrier) + __THROWNL __nonnull ((1)); + + +/* Initialize barrier attribute ATTR. */ +extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr) + __THROW __nonnull ((1)); + +/* Destroy previously dynamically initialized barrier attribute ATTR. */ +extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr) + __THROW __nonnull ((1)); + +/* Get the process-shared flag of the barrier attribute ATTR. */ +extern int pthread_barrierattr_getpshared (const pthread_barrierattr_t * + __restrict __attr, + int *__restrict __pshared) + __THROW __nonnull ((1, 2)); + +/* Set the process-shared flag of the barrier attribute ATTR. */ +extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr, + int __pshared) + __THROW __nonnull ((1)); +#endif + + +/* Functions for handling thread-specific data. */ + +/* Create a key value identifying a location in the thread-specific + data area. Each thread maintains a distinct thread-specific data + area. DESTR_FUNCTION, if non-NULL, is called with the value + associated to that key when the key is destroyed. + DESTR_FUNCTION is not called if the value associated is NULL when + the key is destroyed. */ +extern int pthread_key_create (pthread_key_t *__key, + void (*__destr_function) (void *)) + __THROW __nonnull ((1)); + +/* Destroy KEY. */ +extern int pthread_key_delete (pthread_key_t __key) __THROW; + +/* Return current value of the thread-specific data slot identified by KEY. */ +extern void *pthread_getspecific (pthread_key_t __key) __THROW; + +/* Store POINTER in the thread-specific data slot identified by KEY. */ +extern int pthread_setspecific (pthread_key_t __key, + const void *__pointer) __THROW ; + + +#ifdef __USE_XOPEN2K +/* Get ID of CPU-time clock for thread THREAD_ID. */ +extern int pthread_getcpuclockid (pthread_t __thread_id, + __clockid_t *__clock_id) + __THROW __nonnull ((2)); +#endif + + +/* Install handlers to be called when a new process is created with FORK. + The PREPARE handler is called in the parent process just before performing + FORK. The PARENT handler is called in the parent process just after FORK. + The CHILD handler is called in the child process. Each of the three + handlers can be NULL, meaning that no handler needs to be called at that + point. + PTHREAD_ATFORK can be called several times, in which case the PREPARE + handlers are called in LIFO order (last added with PTHREAD_ATFORK, + first called before FORK), and the PARENT and CHILD handlers are called + in FIFO (first added, first called). */ + +extern int pthread_atfork (void (*__prepare) (void), + void (*__parent) (void), + void (*__child) (void)) __THROW; + + +#ifdef __USE_EXTERN_INLINES +/* Optimizations. */ +__extern_inline int +__NTH (pthread_equal (pthread_t __thread1, pthread_t __thread2)) +{ + return __thread1 == __thread2; +} +#endif + +__END_DECLS + +#endif /* pthread.h */ diff --git a/sysdeps/nptl/setxid.h b/sysdeps/nptl/setxid.h new file mode 100644 index 0000000000..76c88e0feb --- /dev/null +++ b/sysdeps/nptl/setxid.h @@ -0,0 +1,62 @@ +/* Copyright (C) 2004-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include + +#define __SETXID_1(cmd, arg1) \ + cmd.id[0] = (long int) arg1 +#define __SETXID_2(cmd, arg1, arg2) \ + __SETXID_1 (cmd, arg1); cmd.id[1] = (long int) arg2 +#define __SETXID_3(cmd, arg1, arg2, arg3) \ + __SETXID_2 (cmd, arg1, arg2); cmd.id[2] = (long int) arg3 + +#ifdef SINGLE_THREAD +# define INLINE_SETXID_SYSCALL(name, nr, args...) \ + INLINE_SYSCALL (name, nr, args) +#elif defined SHARED +# define INLINE_SETXID_SYSCALL(name, nr, args...) \ + ({ \ + int __result; \ + if (__builtin_expect (__libc_pthread_functions_init, 0)) \ + { \ + struct xid_command __cmd; \ + __cmd.syscall_no = __NR_##name; \ + __SETXID_##nr (__cmd, args); \ + __result = PTHFCT_CALL (ptr__nptl_setxid, (&__cmd)); \ + } \ + else \ + __result = INLINE_SYSCALL (name, nr, args); \ + __result; \ + }) +#else +# define INLINE_SETXID_SYSCALL(name, nr, args...) \ + ({ \ + extern __typeof (__nptl_setxid) __nptl_setxid __attribute__((weak));\ + int __result; \ + if (__glibc_unlikely (__nptl_setxid != NULL)) \ + { \ + struct xid_command __cmd; \ + __cmd.syscall_no = __NR_##name; \ + __SETXID_##nr (__cmd, args); \ + __result =__nptl_setxid (&__cmd); \ + } \ + else \ + __result = INLINE_SYSCALL (name, nr, args); \ + __result; \ + }) +#endif diff --git a/sysdeps/nptl/sigfillset.c b/sysdeps/nptl/sigfillset.c new file mode 100644 index 0000000000..9ab12c7a3e --- /dev/null +++ b/sysdeps/nptl/sigfillset.c @@ -0,0 +1,20 @@ +/* Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include + +#include diff --git a/sysdeps/nptl/tcb-offsets.h b/sysdeps/nptl/tcb-offsets.h new file mode 100644 index 0000000000..3fe13702ea --- /dev/null +++ b/sysdeps/nptl/tcb-offsets.h @@ -0,0 +1 @@ +/* This is overridden by generated tcb-offsets.h on arches which need it. */ diff --git a/sysdeps/nptl/tst-mqueue8x.c b/sysdeps/nptl/tst-mqueue8x.c new file mode 100644 index 0000000000..ca280394f7 --- /dev/null +++ b/sysdeps/nptl/tst-mqueue8x.c @@ -0,0 +1 @@ +#include diff --git a/sysdeps/nptl/unwind-forcedunwind.c b/sysdeps/nptl/unwind-forcedunwind.c new file mode 100644 index 0000000000..9d7bdc5b90 --- /dev/null +++ b/sysdeps/nptl/unwind-forcedunwind.c @@ -0,0 +1,151 @@ +/* Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek . + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include +#include +#include +#include +#include + +static void *libgcc_s_handle; +static void (*libgcc_s_resume) (struct _Unwind_Exception *exc); +static _Unwind_Reason_Code (*libgcc_s_personality) + (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *, + struct _Unwind_Context *); +static _Unwind_Reason_Code (*libgcc_s_forcedunwind) + (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *); +static _Unwind_Word (*libgcc_s_getcfa) (struct _Unwind_Context *); + +void +__attribute_noinline__ +pthread_cancel_init (void) +{ + void *resume; + void *personality; + void *forcedunwind; + void *getcfa; + void *handle; + + if (__glibc_likely (libgcc_s_handle != NULL)) + { + /* Force gcc to reload all values. */ + asm volatile ("" ::: "memory"); + return; + } + + handle = __libc_dlopen (LIBGCC_S_SO); + + if (handle == NULL + || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL + || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL + || (forcedunwind = __libc_dlsym (handle, "_Unwind_ForcedUnwind")) + == NULL + || (getcfa = __libc_dlsym (handle, "_Unwind_GetCFA")) == NULL +#ifdef ARCH_CANCEL_INIT + || ARCH_CANCEL_INIT (handle) +#endif + ) + __libc_fatal (LIBGCC_S_SO " must be installed for pthread_cancel to work\n"); + + PTR_MANGLE (resume); + libgcc_s_resume = resume; + PTR_MANGLE (personality); + libgcc_s_personality = personality; + PTR_MANGLE (forcedunwind); + libgcc_s_forcedunwind = forcedunwind; + PTR_MANGLE (getcfa); + libgcc_s_getcfa = getcfa; + /* Make sure libgcc_s_handle is written last. Otherwise, + pthread_cancel_init might return early even when the pointer the + caller is interested in is not initialized yet. */ + atomic_write_barrier (); + libgcc_s_handle = handle; +} + +void +__libc_freeres_fn_section +__unwind_freeres (void) +{ + void *handle = libgcc_s_handle; + if (handle != NULL) + { + libgcc_s_handle = NULL; + __libc_dlclose (handle); + } +} + +void +_Unwind_Resume (struct _Unwind_Exception *exc) +{ + if (__glibc_unlikely (libgcc_s_handle == NULL)) + pthread_cancel_init (); + else + atomic_read_barrier (); + + void (*resume) (struct _Unwind_Exception *exc) = libgcc_s_resume; + PTR_DEMANGLE (resume); + resume (exc); +} + +_Unwind_Reason_Code +__gcc_personality_v0 (int version, _Unwind_Action actions, + _Unwind_Exception_Class exception_class, + struct _Unwind_Exception *ue_header, + struct _Unwind_Context *context) +{ + if (__glibc_unlikely (libgcc_s_handle == NULL)) + pthread_cancel_init (); + else + atomic_read_barrier (); + + _Unwind_Reason_Code (*personality) + (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *, + struct _Unwind_Context *) = libgcc_s_personality; + PTR_DEMANGLE (personality); + return personality (version, actions, exception_class, ue_header, context); +} + +_Unwind_Reason_Code +_Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop, + void *stop_argument) +{ + if (__glibc_unlikely (libgcc_s_handle == NULL)) + pthread_cancel_init (); + else + atomic_read_barrier (); + + _Unwind_Reason_Code (*forcedunwind) + (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *) + = libgcc_s_forcedunwind; + PTR_DEMANGLE (forcedunwind); + return forcedunwind (exc, stop, stop_argument); +} + +_Unwind_Word +_Unwind_GetCFA (struct _Unwind_Context *context) +{ + if (__glibc_unlikely (libgcc_s_handle == NULL)) + pthread_cancel_init (); + else + atomic_read_barrier (); + + _Unwind_Word (*getcfa) (struct _Unwind_Context *) = libgcc_s_getcfa; + PTR_DEMANGLE (getcfa); + return getcfa (context); +} diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile new file mode 100644 index 0000000000..1080dc9126 --- /dev/null +++ b/sysdeps/pthread/Makefile @@ -0,0 +1,23 @@ +# sysdeps makefile fragment for all pthread-supporting configurations. +# Copyright (C) 2014 Free Software Foundation, Inc. +# This file is part of the GNU C Library. + +# The GNU C Library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. + +# The GNU C Library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. + +# You should have received a copy of the GNU Lesser General Public +# License along with the GNU C Library; if not, see +# . + +ifeq (yes,$(build-shared)) +$(objpfx)tst-timer: $(objpfx)librt.so $(shared-thread-library) +else +$(objpfx)tst-timer: $(objpfx)librt.a $(static-thread-library) +endif diff --git a/sysdeps/pthread/allocalim.h b/sysdeps/pthread/allocalim.h new file mode 100644 index 0000000000..407d4007e7 --- /dev/null +++ b/sysdeps/pthread/allocalim.h @@ -0,0 +1,29 @@ +/* Determine whether block of given size can be allocated on the stack or not. + Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include + + +extern __always_inline +int +__libc_use_alloca (size_t size) +{ + return (__builtin_expect (size <= PTHREAD_STACK_MIN / 4, 1) + || __builtin_expect (__libc_alloca_cutoff (size), 1)); +} diff --git a/sysdeps/pthread/bits/sigthread.h b/sysdeps/pthread/bits/sigthread.h new file mode 100644 index 0000000000..0048d7fd76 --- /dev/null +++ b/sysdeps/pthread/bits/sigthread.h @@ -0,0 +1,43 @@ +/* Signal handling function for threaded programs. + Copyright (C) 1998-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#ifndef _BITS_SIGTHREAD_H +#define _BITS_SIGTHREAD_H 1 + +#if !defined _SIGNAL_H && !defined _PTHREAD_H +# error "Never include this file directly. Use instead" +#endif + +/* Functions for handling signals. */ + +/* Modify the signal mask for the calling thread. The arguments have + the same meaning as for sigprocmask(2). */ +extern int pthread_sigmask (int __how, + const __sigset_t *__restrict __newmask, + __sigset_t *__restrict __oldmask)__THROW; + +/* Send signal SIGNO to the given thread. */ +extern int pthread_kill (pthread_t __threadid, int __signo) __THROW; + +#ifdef __USE_GNU +/* Queue signal and data to a thread. */ +extern int pthread_sigqueue (pthread_t __threadid, int __signo, + const union sigval __value) __THROW; +#endif + +#endif /* bits/sigthread.h */ diff --git a/sysdeps/pthread/flockfile.c b/sysdeps/pthread/flockfile.c new file mode 100644 index 0000000000..da26824cc7 --- /dev/null +++ b/sysdeps/pthread/flockfile.c @@ -0,0 +1,32 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include + + +void +__flockfile (stream) + FILE *stream; +{ + _IO_lock_lock (*stream->_lock); +} +strong_alias (__flockfile, _IO_flockfile) +weak_alias (__flockfile, flockfile) diff --git a/sysdeps/pthread/ftrylockfile.c b/sysdeps/pthread/ftrylockfile.c new file mode 100644 index 0000000000..7921d607ef --- /dev/null +++ b/sysdeps/pthread/ftrylockfile.c @@ -0,0 +1,32 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include + + +int +__ftrylockfile (stream) + FILE *stream; +{ + return _IO_lock_trylock (*stream->_lock); +} +strong_alias (__ftrylockfile, _IO_ftrylockfile) +weak_alias (__ftrylockfile, ftrylockfile) diff --git a/sysdeps/pthread/funlockfile.c b/sysdeps/pthread/funlockfile.c new file mode 100644 index 0000000000..2b367db112 --- /dev/null +++ b/sysdeps/pthread/funlockfile.c @@ -0,0 +1,32 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include + + +void +__funlockfile (stream) + FILE *stream; +{ + _IO_lock_unlock (*stream->_lock); +} +strong_alias (__funlockfile, _IO_funlockfile) +weak_alias (__funlockfile, funlockfile) diff --git a/sysdeps/pthread/posix-timer.h b/sysdeps/pthread/posix-timer.h new file mode 100644 index 0000000000..1076110344 --- /dev/null +++ b/sysdeps/pthread/posix-timer.h @@ -0,0 +1,196 @@ +/* Definitions for POSIX timer implementation on top of NPTL. + Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Kaz Kylheku . + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include + +/* Double linked list. */ +struct list_links +{ + struct list_links *next; + struct list_links *prev; +}; + + +/* Forward declaration. */ +struct timer_node; + + +/* Definitions for an internal thread of the POSIX timer implementation. */ +struct thread_node +{ + struct list_links links; + pthread_attr_t attr; + pthread_t id; + unsigned int exists; + struct list_links timer_queue; + pthread_cond_t cond; + struct timer_node *current_timer; + pthread_t captured; + clockid_t clock_id; +}; + + +/* Internal representation of a timer. */ +struct timer_node +{ + struct list_links links; + struct sigevent event; + clockid_t clock; + struct itimerspec value; + struct timespec expirytime; + pthread_attr_t attr; + unsigned int abstime; + unsigned int armed; + enum { + TIMER_FREE, TIMER_INUSE, TIMER_DELETED + } inuse; + struct thread_node *thread; + pid_t creator_pid; + int refcount; + int overrun_count; +}; + + +/* The limit is not published if we are compiled with kernel timer support. + But we still compiled in this implementation with its limit unless built + to require the kernel support. */ +#ifndef TIMER_MAX +# define TIMER_MAX 256 +#endif + +/* Static array with the structures for all the timers. */ +extern struct timer_node __timer_array[TIMER_MAX]; + +/* Global lock to protect operation on the lists. */ +extern pthread_mutex_t __timer_mutex; + +/* Variable to protext initialization. */ +extern pthread_once_t __timer_init_once_control; + +/* Nonzero if initialization of timer implementation failed. */ +extern int __timer_init_failed; + +/* Node for the thread used to deliver signals. */ +extern struct thread_node __timer_signal_thread_rclk; + + +/* Return pointer to timer structure corresponding to ID. */ +#define timer_id2ptr(timerid) ((struct timer_node *) timerid) +#define timer_ptr2id(timerid) ((void *) timerid) + +/* Check whether timer is valid; global mutex must be held. */ +static inline int +timer_valid (struct timer_node *timer) +{ + return timer && timer->inuse == TIMER_INUSE; +} + +/* Timer refcount functions; need global mutex. */ +extern void __timer_dealloc (struct timer_node *timer); + +static inline void +timer_addref (struct timer_node *timer) +{ + timer->refcount++; +} + +static inline void +timer_delref (struct timer_node *timer) +{ + if (--timer->refcount == 0) + __timer_dealloc (timer); +} + +/* Timespec helper routines. */ +static inline int +__attribute ((always_inline)) +timespec_compare (const struct timespec *left, const struct timespec *right) +{ + if (left->tv_sec < right->tv_sec) + return -1; + if (left->tv_sec > right->tv_sec) + return 1; + + if (left->tv_nsec < right->tv_nsec) + return -1; + if (left->tv_nsec > right->tv_nsec) + return 1; + + return 0; +} + +static inline void +timespec_add (struct timespec *sum, const struct timespec *left, + const struct timespec *right) +{ + sum->tv_sec = left->tv_sec + right->tv_sec; + sum->tv_nsec = left->tv_nsec + right->tv_nsec; + + if (sum->tv_nsec >= 1000000000) + { + ++sum->tv_sec; + sum->tv_nsec -= 1000000000; + } +} + +static inline void +timespec_sub (struct timespec *diff, const struct timespec *left, + const struct timespec *right) +{ + diff->tv_sec = left->tv_sec - right->tv_sec; + diff->tv_nsec = left->tv_nsec - right->tv_nsec; + + if (diff->tv_nsec < 0) + { + --diff->tv_sec; + diff->tv_nsec += 1000000000; + } +} + + +/* We need one of the list functions in the other modules. */ +static inline void +list_unlink_ip (struct list_links *list) +{ + struct list_links *lnext = list->next, *lprev = list->prev; + + lnext->prev = lprev; + lprev->next = lnext; + + /* The suffix ip means idempotent; list_unlink_ip can be called + * two or more times on the same node. + */ + + list->next = list; + list->prev = list; +} + + +/* Functions in the helper file. */ +extern void __timer_mutex_cancel_handler (void *arg); +extern void __timer_init_once (void); +extern struct timer_node *__timer_alloc (void); +extern int __timer_thread_start (struct thread_node *thread); +extern struct thread_node *__timer_thread_find_matching (const pthread_attr_t *desired_attr, clockid_t); +extern struct thread_node *__timer_thread_alloc (const pthread_attr_t *desired_attr, clockid_t); +extern void __timer_thread_dealloc (struct thread_node *thread); +extern int __timer_thread_queue_timer (struct thread_node *thread, + struct timer_node *insert); +extern void __timer_thread_wakeup (struct thread_node *thread); diff --git a/sysdeps/pthread/timer_create.c b/sysdeps/pthread/timer_create.c new file mode 100644 index 0000000000..461d28e353 --- /dev/null +++ b/sysdeps/pthread/timer_create.c @@ -0,0 +1,169 @@ +/* Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Kaz Kylheku . + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include +#include +#include +#include + +#include "posix-timer.h" + + +/* Create new per-process timer using CLOCK. */ +int +timer_create (clock_id, evp, timerid) + clockid_t clock_id; + struct sigevent *evp; + timer_t *timerid; +{ + int retval = -1; + struct timer_node *newtimer = NULL; + struct thread_node *thread = NULL; + + if (0 +#if defined _POSIX_CPUTIME && _POSIX_CPUTIME >= 0 + || clock_id == CLOCK_PROCESS_CPUTIME_ID +#endif +#if defined _POSIX_THREAD_CPUTIME && _POSIX_THREAD_CPUTIME >= 0 + || clock_id == CLOCK_THREAD_CPUTIME_ID +#endif + ) + { + /* We don't allow timers for CPU clocks. At least not in the + moment. */ + __set_errno (ENOTSUP); + return -1; + } + + if (clock_id != CLOCK_REALTIME) + { + __set_errno (EINVAL); + return -1; + } + + pthread_once (&__timer_init_once_control, __timer_init_once); + + if (__timer_init_failed) + { + __set_errno (ENOMEM); + return -1; + } + + pthread_mutex_lock (&__timer_mutex); + + newtimer = __timer_alloc (); + if (__glibc_unlikely (newtimer == NULL)) + { + __set_errno (EAGAIN); + goto unlock_bail; + } + + if (evp != NULL) + newtimer->event = *evp; + else + { + newtimer->event.sigev_notify = SIGEV_SIGNAL; + newtimer->event.sigev_signo = SIGALRM; + newtimer->event.sigev_value.sival_ptr = timer_ptr2id (newtimer); + newtimer->event.sigev_notify_function = 0; + } + + newtimer->event.sigev_notify_attributes = &newtimer->attr; + newtimer->creator_pid = getpid (); + + switch (__builtin_expect (newtimer->event.sigev_notify, SIGEV_SIGNAL)) + { + case SIGEV_NONE: + case SIGEV_SIGNAL: + /* We have a global thread for delivering timed signals. + If it is not running, try to start it up. */ + thread = &__timer_signal_thread_rclk; + if (! thread->exists) + { + if (__builtin_expect (__timer_thread_start (thread), + 1) < 0) + { + __set_errno (EAGAIN); + goto unlock_bail; + } + } + break; + + case SIGEV_THREAD: + /* Copy over thread attributes or set up default ones. */ + if (evp->sigev_notify_attributes) + newtimer->attr = *(pthread_attr_t *) evp->sigev_notify_attributes; + else + pthread_attr_init (&newtimer->attr); + + /* Ensure thread attributes call for deatched thread. */ + pthread_attr_setdetachstate (&newtimer->attr, PTHREAD_CREATE_DETACHED); + + /* Try to find existing thread having the right attributes. */ + thread = __timer_thread_find_matching (&newtimer->attr, clock_id); + + /* If no existing thread has these attributes, try to allocate one. */ + if (thread == NULL) + thread = __timer_thread_alloc (&newtimer->attr, clock_id); + + /* Out of luck; no threads are available. */ + if (__glibc_unlikely (thread == NULL)) + { + __set_errno (EAGAIN); + goto unlock_bail; + } + + /* If the thread is not running already, try to start it. */ + if (! thread->exists + && __builtin_expect (! __timer_thread_start (thread), 0)) + { + __set_errno (EAGAIN); + goto unlock_bail; + } + break; + + default: + __set_errno (EINVAL); + goto unlock_bail; + } + + newtimer->clock = clock_id; + newtimer->abstime = 0; + newtimer->armed = 0; + newtimer->thread = thread; + + *timerid = timer_ptr2id (newtimer); + retval = 0; + + if (__builtin_expect (retval, 0) == -1) + { + unlock_bail: + if (thread != NULL) + __timer_thread_dealloc (thread); + if (newtimer != NULL) + { + timer_delref (newtimer); + __timer_dealloc (newtimer); + } + } + + pthread_mutex_unlock (&__timer_mutex); + + return retval; +} diff --git a/sysdeps/pthread/timer_delete.c b/sysdeps/pthread/timer_delete.c new file mode 100644 index 0000000000..99e4cc180e --- /dev/null +++ b/sysdeps/pthread/timer_delete.c @@ -0,0 +1,69 @@ +/* Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Kaz Kylheku . + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include +#include +#include + +#include "posix-timer.h" + + +/* Delete timer TIMERID. */ +int +timer_delete (timerid) + timer_t timerid; +{ + struct timer_node *timer; + int retval = -1; + + pthread_mutex_lock (&__timer_mutex); + + timer = timer_id2ptr (timerid); + if (! timer_valid (timer)) + /* Invalid timer ID or the timer is not in use. */ + __set_errno (EINVAL); + else + { + if (timer->armed && timer->thread != NULL) + { + struct thread_node *thread = timer->thread; + assert (thread != NULL); + + /* If thread is cancelled while waiting for handler to terminate, + the mutex is unlocked and timer_delete is aborted. */ + pthread_cleanup_push (__timer_mutex_cancel_handler, &__timer_mutex); + + /* If timer is currently being serviced, wait for it to finish. */ + while (thread->current_timer == timer) + pthread_cond_wait (&thread->cond, &__timer_mutex); + + pthread_cleanup_pop (0); + } + + /* Remove timer from whatever queue it may be on and deallocate it. */ + timer->inuse = TIMER_DELETED; + list_unlink_ip (&timer->links); + timer_delref (timer); + retval = 0; + } + + pthread_mutex_unlock (&__timer_mutex); + + return retval; +} diff --git a/sysdeps/pthread/timer_getoverr.c b/sysdeps/pthread/timer_getoverr.c new file mode 100644 index 0000000000..159ebf27f0 --- /dev/null +++ b/sysdeps/pthread/timer_getoverr.c @@ -0,0 +1,44 @@ +/* Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Kaz Kylheku . + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include +#include + +#include "posix-timer.h" + + +/* Get expiration overrun for timer TIMERID. */ +int +timer_getoverrun (timerid) + timer_t timerid; +{ + struct timer_node *timer; + int retval = -1; + + pthread_mutex_lock (&__timer_mutex); + + if (! timer_valid (timer = timer_id2ptr (timerid))) + __set_errno (EINVAL); + else + retval = timer->overrun_count; + + pthread_mutex_unlock (&__timer_mutex); + + return retval; +} diff --git a/sysdeps/pthread/timer_gettime.c b/sysdeps/pthread/timer_gettime.c new file mode 100644 index 0000000000..1e0ea69ad0 --- /dev/null +++ b/sysdeps/pthread/timer_gettime.c @@ -0,0 +1,76 @@ +/* Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Kaz Kylheku . + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include +#include + +#include "posix-timer.h" + + +/* Get current value of timer TIMERID and store it in VLAUE. */ +int +timer_gettime (timerid, value) + timer_t timerid; + struct itimerspec *value; +{ + struct timer_node *timer; + struct timespec now, expiry; + int retval = -1, armed = 0, valid; + clock_t clock = 0; + + pthread_mutex_lock (&__timer_mutex); + + timer = timer_id2ptr (timerid); + valid = timer_valid (timer); + + if (valid) { + armed = timer->armed; + expiry = timer->expirytime; + clock = timer->clock; + value->it_interval = timer->value.it_interval; + } + + pthread_mutex_unlock (&__timer_mutex); + + if (valid) + { + if (armed) + { + clock_gettime (clock, &now); + if (timespec_compare (&now, &expiry) < 0) + timespec_sub (&value->it_value, &expiry, &now); + else + { + value->it_value.tv_sec = 0; + value->it_value.tv_nsec = 0; + } + } + else + { + value->it_value.tv_sec = 0; + value->it_value.tv_nsec = 0; + } + + retval = 0; + } + else + __set_errno (EINVAL); + + return retval; +} diff --git a/sysdeps/pthread/timer_routines.c b/sysdeps/pthread/timer_routines.c new file mode 100644 index 0000000000..ce1aa417cd --- /dev/null +++ b/sysdeps/pthread/timer_routines.c @@ -0,0 +1,577 @@ +/* Helper code for POSIX timer implementation on NPTL. + Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Kaz Kylheku . + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "posix-timer.h" +#include + + +/* Number of threads used. */ +#define THREAD_MAXNODES 16 + +/* Array containing the descriptors for the used threads. */ +static struct thread_node thread_array[THREAD_MAXNODES]; + +/* Static array with the structures for all the timers. */ +struct timer_node __timer_array[TIMER_MAX]; + +/* Global lock to protect operation on the lists. */ +pthread_mutex_t __timer_mutex = PTHREAD_MUTEX_INITIALIZER; + +/* Variable to protext initialization. */ +pthread_once_t __timer_init_once_control = PTHREAD_ONCE_INIT; + +/* Nonzero if initialization of timer implementation failed. */ +int __timer_init_failed; + +/* Node for the thread used to deliver signals. */ +struct thread_node __timer_signal_thread_rclk; + +/* Lists to keep free and used timers and threads. */ +struct list_links timer_free_list; +struct list_links thread_free_list; +struct list_links thread_active_list; + + +#ifdef __NR_rt_sigqueueinfo +extern int __syscall_rt_sigqueueinfo (int, int, siginfo_t *); +#endif + + +/* List handling functions. */ +static inline void +list_init (struct list_links *list) +{ + list->next = list->prev = list; +} + +static inline void +list_append (struct list_links *list, struct list_links *newp) +{ + newp->prev = list->prev; + newp->next = list; + list->prev->next = newp; + list->prev = newp; +} + +static inline void +list_insbefore (struct list_links *list, struct list_links *newp) +{ + list_append (list, newp); +} + +/* + * Like list_unlink_ip, except that calling it on a node that + * is already unlinked is disastrous rather than a noop. + */ + +static inline void +list_unlink (struct list_links *list) +{ + struct list_links *lnext = list->next, *lprev = list->prev; + + lnext->prev = lprev; + lprev->next = lnext; +} + +static inline struct list_links * +list_first (struct list_links *list) +{ + return list->next; +} + +static inline struct list_links * +list_null (struct list_links *list) +{ + return list; +} + +static inline struct list_links * +list_next (struct list_links *list) +{ + return list->next; +} + +static inline int +list_isempty (struct list_links *list) +{ + return list->next == list; +} + + +/* Functions build on top of the list functions. */ +static inline struct thread_node * +thread_links2ptr (struct list_links *list) +{ + return (struct thread_node *) ((char *) list + - offsetof (struct thread_node, links)); +} + +static inline struct timer_node * +timer_links2ptr (struct list_links *list) +{ + return (struct timer_node *) ((char *) list + - offsetof (struct timer_node, links)); +} + + +/* Initialize a newly allocated thread structure. */ +static void +thread_init (struct thread_node *thread, const pthread_attr_t *attr, clockid_t clock_id) +{ + if (attr != NULL) + thread->attr = *attr; + else + { + pthread_attr_init (&thread->attr); + pthread_attr_setdetachstate (&thread->attr, PTHREAD_CREATE_DETACHED); + } + + thread->exists = 0; + list_init (&thread->timer_queue); + pthread_cond_init (&thread->cond, 0); + thread->current_timer = 0; + thread->captured = pthread_self (); + thread->clock_id = clock_id; +} + + +/* Initialize the global lists, and acquire global resources. Error + reporting is done by storing a non-zero value to the global variable + timer_init_failed. */ +static void +init_module (void) +{ + int i; + + list_init (&timer_free_list); + list_init (&thread_free_list); + list_init (&thread_active_list); + + for (i = 0; i < TIMER_MAX; ++i) + { + list_append (&timer_free_list, &__timer_array[i].links); + __timer_array[i].inuse = TIMER_FREE; + } + + for (i = 0; i < THREAD_MAXNODES; ++i) + list_append (&thread_free_list, &thread_array[i].links); + + thread_init (&__timer_signal_thread_rclk, 0, CLOCK_REALTIME); +} + + +/* This is a handler executed in a child process after a fork() + occurs. It reinitializes the module, resetting all of the data + structures to their initial state. The mutex is initialized in + case it was locked in the parent process. */ +static void +reinit_after_fork (void) +{ + init_module (); + pthread_mutex_init (&__timer_mutex, 0); +} + + +/* Called once form pthread_once in timer_init. This initializes the + module and ensures that reinit_after_fork will be executed in any + child process. */ +void +__timer_init_once (void) +{ + init_module (); + pthread_atfork (0, 0, reinit_after_fork); +} + + +/* Deinitialize a thread that is about to be deallocated. */ +static void +thread_deinit (struct thread_node *thread) +{ + assert (list_isempty (&thread->timer_queue)); + pthread_cond_destroy (&thread->cond); +} + + +/* Allocate a thread structure from the global free list. Global + mutex lock must be held by caller. The thread is moved to + the active list. */ +struct thread_node * +__timer_thread_alloc (const pthread_attr_t *desired_attr, clockid_t clock_id) +{ + struct list_links *node = list_first (&thread_free_list); + + if (node != list_null (&thread_free_list)) + { + struct thread_node *thread = thread_links2ptr (node); + list_unlink (node); + thread_init (thread, desired_attr, clock_id); + list_append (&thread_active_list, node); + return thread; + } + + return 0; +} + + +/* Return a thread structure to the global free list. Global lock + must be held by caller. */ +void +__timer_thread_dealloc (struct thread_node *thread) +{ + thread_deinit (thread); + list_unlink (&thread->links); + list_append (&thread_free_list, &thread->links); +} + + +/* Each of our threads which terminates executes this cleanup + handler. We never terminate threads ourselves; if a thread gets here + it means that the evil application has killed it. If the thread has + timers, these require servicing and so we must hire a replacement + thread right away. We must also unblock another thread that may + have been waiting for this thread to finish servicing a timer (see + timer_delete()). */ + +static void +thread_cleanup (void *val) +{ + if (val != NULL) + { + struct thread_node *thread = val; + + /* How did the signal thread get killed? */ + assert (thread != &__timer_signal_thread_rclk); + + pthread_mutex_lock (&__timer_mutex); + + thread->exists = 0; + + /* We are no longer processing a timer event. */ + thread->current_timer = 0; + + if (list_isempty (&thread->timer_queue)) + __timer_thread_dealloc (thread); + else + (void) __timer_thread_start (thread); + + pthread_mutex_unlock (&__timer_mutex); + + /* Unblock potentially blocked timer_delete(). */ + pthread_cond_broadcast (&thread->cond); + } +} + + +/* Handle a timer which is supposed to go off now. */ +static void +thread_expire_timer (struct thread_node *self, struct timer_node *timer) +{ + self->current_timer = timer; /* Lets timer_delete know timer is running. */ + + pthread_mutex_unlock (&__timer_mutex); + + switch (__builtin_expect (timer->event.sigev_notify, SIGEV_SIGNAL)) + { + case SIGEV_NONE: + break; + + case SIGEV_SIGNAL: +#ifdef __NR_rt_sigqueueinfo + { + siginfo_t info; + + /* First, clear the siginfo_t structure, so that we don't pass our + stack content to other tasks. */ + memset (&info, 0, sizeof (siginfo_t)); + /* We must pass the information about the data in a siginfo_t + value. */ + info.si_signo = timer->event.sigev_signo; + info.si_code = SI_TIMER; + info.si_pid = timer->creator_pid; + info.si_uid = getuid (); + info.si_value = timer->event.sigev_value; + + INLINE_SYSCALL (rt_sigqueueinfo, 3, info.si_pid, info.si_signo, &info); + } +#else + if (pthread_kill (self->captured, timer->event.sigev_signo) != 0) + { + if (pthread_kill (self->id, timer->event.sigev_signo) != 0) + abort (); + } +#endif + break; + + case SIGEV_THREAD: + timer->event.sigev_notify_function (timer->event.sigev_value); + break; + + default: + assert (! "unknown event"); + break; + } + + pthread_mutex_lock (&__timer_mutex); + + self->current_timer = 0; + + pthread_cond_broadcast (&self->cond); +} + + +/* Thread function; executed by each timer thread. The job of this + function is to wait on the thread's timer queue and expire the + timers in chronological order as close to their scheduled time as + possible. */ +static void +__attribute__ ((noreturn)) +thread_func (void *arg) +{ + struct thread_node *self = arg; + + /* Register cleanup handler, in case rogue application terminates + this thread. (This cannot happen to __timer_signal_thread, which + doesn't invoke application callbacks). */ + + pthread_cleanup_push (thread_cleanup, self); + + pthread_mutex_lock (&__timer_mutex); + + while (1) + { + struct list_links *first; + struct timer_node *timer = NULL; + + /* While the timer queue is not empty, inspect the first node. */ + first = list_first (&self->timer_queue); + if (first != list_null (&self->timer_queue)) + { + struct timespec now; + + timer = timer_links2ptr (first); + + /* This assumes that the elements of the list of one thread + are all for the same clock. */ + clock_gettime (timer->clock, &now); + + while (1) + { + /* If the timer is due or overdue, remove it from the queue. + If it's a periodic timer, re-compute its new time and + requeue it. Either way, perform the timer expiry. */ + if (timespec_compare (&now, &timer->expirytime) < 0) + break; + + list_unlink_ip (first); + + if (__builtin_expect (timer->value.it_interval.tv_sec, 0) != 0 + || timer->value.it_interval.tv_nsec != 0) + { + timer->overrun_count = 0; + timespec_add (&timer->expirytime, &timer->expirytime, + &timer->value.it_interval); + while (timespec_compare (&timer->expirytime, &now) < 0) + { + timespec_add (&timer->expirytime, &timer->expirytime, + &timer->value.it_interval); + if (timer->overrun_count < DELAYTIMER_MAX) + ++timer->overrun_count; + } + __timer_thread_queue_timer (self, timer); + } + + thread_expire_timer (self, timer); + + first = list_first (&self->timer_queue); + if (first == list_null (&self->timer_queue)) + break; + + timer = timer_links2ptr (first); + } + } + + /* If the queue is not empty, wait until the expiry time of the + first node. Otherwise wait indefinitely. Insertions at the + head of the queue must wake up the thread by broadcasting + this condition variable. */ + if (timer != NULL) + pthread_cond_timedwait (&self->cond, &__timer_mutex, + &timer->expirytime); + else + pthread_cond_wait (&self->cond, &__timer_mutex); + } + /* This macro will never be executed since the while loop loops + forever - but we have to add it for proper nesting. */ + pthread_cleanup_pop (1); +} + + +/* Enqueue a timer in wakeup order in the thread's timer queue. + Returns 1 if the timer was inserted at the head of the queue, + causing the queue's next wakeup time to change. */ + +int +__timer_thread_queue_timer (struct thread_node *thread, + struct timer_node *insert) +{ + struct list_links *iter; + int athead = 1; + + for (iter = list_first (&thread->timer_queue); + iter != list_null (&thread->timer_queue); + iter = list_next (iter)) + { + struct timer_node *timer = timer_links2ptr (iter); + + if (timespec_compare (&insert->expirytime, &timer->expirytime) < 0) + break; + athead = 0; + } + + list_insbefore (iter, &insert->links); + return athead; +} + + +/* Start a thread and associate it with the given thread node. Global + lock must be held by caller. */ +int +__timer_thread_start (struct thread_node *thread) +{ + int retval = 1; + + assert (!thread->exists); + thread->exists = 1; + + if (pthread_create (&thread->id, &thread->attr, + (void *(*) (void *)) thread_func, thread) != 0) + { + thread->exists = 0; + retval = -1; + } + + return retval; +} + + +void +__timer_thread_wakeup (struct thread_node *thread) +{ + pthread_cond_broadcast (&thread->cond); +} + + +/* Compare two pthread_attr_t thread attributes for exact equality. + Returns 1 if they are equal, otherwise zero if they are not equal + or contain illegal values. This version is NPTL-specific for + performance reason. One could use the access functions to get the + values of all the fields of the attribute structure. */ +static int +thread_attr_compare (const pthread_attr_t *left, const pthread_attr_t *right) +{ + struct pthread_attr *ileft = (struct pthread_attr *) left; + struct pthread_attr *iright = (struct pthread_attr *) right; + + return (ileft->flags == iright->flags + && ileft->schedpolicy == iright->schedpolicy + && (ileft->schedparam.sched_priority + == iright->schedparam.sched_priority) + && ileft->guardsize == iright->guardsize + && ileft->stackaddr == iright->stackaddr + && ileft->stacksize == iright->stacksize + && ((ileft->cpuset == NULL && iright->cpuset == NULL) + || (ileft->cpuset != NULL && iright->cpuset != NULL + && ileft->cpusetsize == iright->cpusetsize + && memcmp (ileft->cpuset, iright->cpuset, + ileft->cpusetsize) == 0))); +} + + +/* Search the list of active threads and find one which has matching + attributes. Global mutex lock must be held by caller. */ +struct thread_node * +__timer_thread_find_matching (const pthread_attr_t *desired_attr, + clockid_t desired_clock_id) +{ + struct list_links *iter = list_first (&thread_active_list); + + while (iter != list_null (&thread_active_list)) + { + struct thread_node *candidate = thread_links2ptr (iter); + + if (thread_attr_compare (desired_attr, &candidate->attr) + && desired_clock_id == candidate->clock_id) + return candidate; + + iter = list_next (iter); + } + + return NULL; +} + + +/* Grab a free timer structure from the global free list. The global + lock must be held by the caller. */ +struct timer_node * +__timer_alloc (void) +{ + struct list_links *node = list_first (&timer_free_list); + + if (node != list_null (&timer_free_list)) + { + struct timer_node *timer = timer_links2ptr (node); + list_unlink_ip (node); + timer->inuse = TIMER_INUSE; + timer->refcount = 1; + return timer; + } + + return NULL; +} + + +/* Return a timer structure to the global free list. The global lock + must be held by the caller. */ +void +__timer_dealloc (struct timer_node *timer) +{ + assert (timer->refcount == 0); + timer->thread = NULL; /* Break association between timer and thread. */ + timer->inuse = TIMER_FREE; + list_append (&timer_free_list, &timer->links); +} + + +/* Thread cancellation handler which unlocks a mutex. */ +void +__timer_mutex_cancel_handler (void *arg) +{ + pthread_mutex_unlock (arg); +} diff --git a/sysdeps/pthread/timer_settime.c b/sysdeps/pthread/timer_settime.c new file mode 100644 index 0000000000..5d3c1664f7 --- /dev/null +++ b/sysdeps/pthread/timer_settime.c @@ -0,0 +1,136 @@ +/* Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Kaz Kylheku . + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include +#include + +#include "posix-timer.h" + + +/* Set timer TIMERID to VALUE, returning old value in OVLAUE. */ +int +timer_settime (timerid, flags, value, ovalue) + timer_t timerid; + int flags; + const struct itimerspec *value; + struct itimerspec *ovalue; +{ + struct timer_node *timer; + struct thread_node *thread = NULL; + struct timespec now; + int have_now = 0, need_wakeup = 0; + int retval = -1; + + timer = timer_id2ptr (timerid); + if (timer == NULL) + { + __set_errno (EINVAL); + goto bail; + } + + if (value->it_interval.tv_nsec < 0 + || value->it_interval.tv_nsec >= 1000000000 + || value->it_value.tv_nsec < 0 + || value->it_value.tv_nsec >= 1000000000) + { + __set_errno (EINVAL); + goto bail; + } + + /* Will need to know current time since this is a relative timer; + might as well make the system call outside of the lock now! */ + + if ((flags & TIMER_ABSTIME) == 0) + { + clock_gettime (timer->clock, &now); + have_now = 1; + } + + pthread_mutex_lock (&__timer_mutex); + timer_addref (timer); + + /* One final check of timer validity; this one is possible only + until we have the mutex, because it accesses the inuse flag. */ + + if (! timer_valid(timer)) + { + __set_errno (EINVAL); + goto unlock_bail; + } + + if (ovalue != NULL) + { + ovalue->it_interval = timer->value.it_interval; + + if (timer->armed) + { + if (! have_now) + { + pthread_mutex_unlock (&__timer_mutex); + clock_gettime (timer->clock, &now); + have_now = 1; + pthread_mutex_lock (&__timer_mutex); + timer_addref (timer); + } + + timespec_sub (&ovalue->it_value, &timer->expirytime, &now); + } + else + { + ovalue->it_value.tv_sec = 0; + ovalue->it_value.tv_nsec = 0; + } + } + + timer->value = *value; + + list_unlink_ip (&timer->links); + timer->armed = 0; + + thread = timer->thread; + + /* A value of { 0, 0 } causes the timer to be stopped. */ + if (value->it_value.tv_sec != 0 + || __builtin_expect (value->it_value.tv_nsec != 0, 1)) + { + if ((flags & TIMER_ABSTIME) != 0) + /* The user specified the expiration time. */ + timer->expirytime = value->it_value; + else + timespec_add (&timer->expirytime, &now, &value->it_value); + + /* Only need to wake up the thread if timer is inserted + at the head of the queue. */ + if (thread != NULL) + need_wakeup = __timer_thread_queue_timer (thread, timer); + timer->armed = 1; + } + + retval = 0; + +unlock_bail: + timer_delref (timer); + pthread_mutex_unlock (&__timer_mutex); + +bail: + if (thread != NULL && need_wakeup) + __timer_thread_wakeup (thread); + + return retval; +} diff --git a/sysdeps/pthread/tst-timer.c b/sysdeps/pthread/tst-timer.c new file mode 100644 index 0000000000..16adf3c199 --- /dev/null +++ b/sysdeps/pthread/tst-timer.c @@ -0,0 +1,159 @@ +/* Tests for POSIX timer implementation. + Copyright (C) 2000-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Kaz Kylheku . + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include +#include +#include +#include +#include +#include + + +static void +notify_func1 (union sigval sigval) +{ + puts ("notify_func1"); +} + + +static void +notify_func2 (union sigval sigval) +{ + puts ("notify_func2"); +} + + +static void +signal_func (int sig) +{ + static const char text[] = "signal_func\n"; + signal (sig, signal_func); + write (STDOUT_FILENO, text, sizeof text - 1); +} + +static void +intr_sleep (int sec) +{ + struct timespec ts; + + ts.tv_sec = sec; + ts.tv_nsec = 0; + + while (nanosleep (&ts, &ts) == -1 && errno == EINTR) + ; +} + +#define ZSIGALRM 14 + + +int +main (void) +{ + struct timespec ts; + timer_t timer_sig, timer_thr1, timer_thr2; + int retval; + struct sigevent sigev1 = + { + .sigev_notify = SIGEV_SIGNAL, + .sigev_signo = ZSIGALRM + }; + struct sigevent sigev2; + struct itimerspec itimer1 = { { 0, 200000000 }, { 0, 200000000 } }; + struct itimerspec itimer2 = { { 0, 100000000 }, { 0, 500000000 } }; + struct itimerspec itimer3 = { { 0, 150000000 }, { 0, 300000000 } }; + struct itimerspec old; + + retval = clock_gettime (CLOCK_REALTIME, &ts); + + sigev2.sigev_notify = SIGEV_THREAD; + sigev2.sigev_notify_function = notify_func1; + sigev2.sigev_notify_attributes = NULL; + /* It is unnecessary to do the following but to set a good example + we do it anyhow. */ + sigev2.sigev_value.sival_ptr = NULL; + + setvbuf (stdout, 0, _IOLBF, 0); + + printf ("clock_gettime returned %d, timespec = { %ld, %ld }\n", + retval, ts.tv_sec, ts.tv_nsec); + + retval = clock_getres (CLOCK_REALTIME, &ts); + + printf ("clock_getres returned %d, timespec = { %ld, %ld }\n", + retval, ts.tv_sec, ts.tv_nsec); + + if (timer_create (CLOCK_REALTIME, &sigev1, &timer_sig) != 0) + { + printf ("timer_create for timer_sig failed: %m\n"); + exit (1); + } + if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr1) != 0) + { + printf ("timer_create for timer_thr1 failed: %m\n"); + exit (1); + } + sigev2.sigev_notify_function = notify_func2; + if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr2) != 0) + { + printf ("timer_create for timer_thr2 failed: %m\n"); + exit (1); + } + + if (timer_settime (timer_thr1, 0, &itimer2, &old) != 0) + { + printf ("timer_settime for timer_thr1 failed: %m\n"); + exit (1); + } + if (timer_settime (timer_thr2, 0, &itimer3, &old) != 0) + { + printf ("timer_settime for timer_thr2 failed: %m\n"); + exit (1); + } + + signal (ZSIGALRM, signal_func); + + if (timer_settime (timer_sig, 0, &itimer1, &old) != 0) + { + printf ("timer_settime for timer_sig failed: %m\n"); + exit (1); + } + + intr_sleep (3); + + if (timer_delete (timer_sig) != 0) + { + printf ("timer_delete for timer_sig failed: %m\n"); + exit (1); + } + if (timer_delete (timer_thr1) != 0) + { + printf ("timer_delete for timer_thr1 failed: %m\n"); + exit (1); + } + + intr_sleep (3); + + if (timer_delete (timer_thr2) != 0) + { + printf ("timer_delete for timer_thr2 failed: %m\n"); + exit (1); + } + + return 0; +} diff --git a/sysdeps/unix/sysv/linux/Implies b/sysdeps/unix/sysv/linux/Implies index b04bb6b33d..a579e634ae 100644 --- a/sysdeps/unix/sysv/linux/Implies +++ b/sysdeps/unix/sysv/linux/Implies @@ -1,3 +1,6 @@ +# All Linux builds use NPTL. +nptl + # The gnu subdirectory exists for things common to both Linux-based and # Hurd-based GNU systems. gnu diff --git a/sysdeps/unix/sysv/linux/pthread_sigmask.c b/sysdeps/unix/sysv/linux/pthread_sigmask.c new file mode 100644 index 0000000000..21f0665460 --- /dev/null +++ b/sysdeps/unix/sysv/linux/pthread_sigmask.c @@ -0,0 +1,57 @@ +/* Copyright (C) 2002-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include + + +int +pthread_sigmask (how, newmask, oldmask) + int how; + const sigset_t *newmask; + sigset_t *oldmask; +{ + sigset_t local_newmask; + + /* The only thing we have to make sure here is that SIGCANCEL and + SIGSETXID is not blocked. */ + if (newmask != NULL + && (__builtin_expect (__sigismember (newmask, SIGCANCEL), 0) + || __builtin_expect (__sigismember (newmask, SIGSETXID), 0))) + { + local_newmask = *newmask; + __sigdelset (&local_newmask, SIGCANCEL); + __sigdelset (&local_newmask, SIGSETXID); + newmask = &local_newmask; + } + +#ifdef INTERNAL_SYSCALL + /* We know that realtime signals are available if NPTL is used. */ + INTERNAL_SYSCALL_DECL (err); + int result = INTERNAL_SYSCALL (rt_sigprocmask, err, 4, how, newmask, + oldmask, _NSIG / 8); + + return (INTERNAL_SYSCALL_ERROR_P (result, err) + ? INTERNAL_SYSCALL_ERRNO (result, err) + : 0); +#else + return sigprocmask (how, newmask, oldmask) == -1 ? errno : 0; +#endif +} -- cgit 1.4.1