diff options
Diffstat (limited to 'sysdeps/nptl')
| -rw-r--r-- | sysdeps/nptl/Implies | 1 | ||||
| -rw-r--r-- | sysdeps/nptl/Makefile | 35 | ||||
| -rw-r--r-- | sysdeps/nptl/Subdirs | 2 | ||||
| -rw-r--r-- | sysdeps/nptl/aio_misc.h | 74 | ||||
| -rw-r--r-- | sysdeps/nptl/bits/libc-lock.h | 187 | ||||
| -rw-r--r-- | sysdeps/nptl/bits/libc-lockP.h | 424 | ||||
| -rw-r--r-- | sysdeps/nptl/bits/stdio-lock.h | 110 | ||||
| -rw-r--r-- | sysdeps/nptl/configure | 89 | ||||
| -rw-r--r-- | sysdeps/nptl/configure.ac | 49 | ||||
| -rw-r--r-- | sysdeps/nptl/gai_misc.h | 121 | ||||
| -rw-r--r-- | sysdeps/nptl/librt-cancellation.c | 24 | ||||
| -rw-r--r-- | sysdeps/nptl/malloc-machine.h | 73 | ||||
| -rw-r--r-- | sysdeps/nptl/pthread-functions.h | 117 | ||||
| -rw-r--r-- | sysdeps/nptl/pthread.h | 1163 | ||||
| -rw-r--r-- | sysdeps/nptl/setxid.h | 62 | ||||
| -rw-r--r-- | sysdeps/nptl/sigfillset.c | 20 | ||||
| -rw-r--r-- | sysdeps/nptl/tcb-offsets.h | 1 | ||||
| -rw-r--r-- | sysdeps/nptl/tst-mqueue8x.c | 1 | ||||
| -rw-r--r-- | sysdeps/nptl/unwind-forcedunwind.c | 151 |
19 files changed, 2704 insertions, 0 deletions
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 <drepper@redhat.com>, 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 +# <http://www.gnu.org/licenses/>. + +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 + <http://www.gnu.org/licenses/>. */ + +/* 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 <assert.h> +#include <pthreadP.h> +#include <lowlevellock.h> + +#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 <aio_misc.h> 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 <http://www.gnu.org/licenses/>. */ + +#ifndef _BITS_LIBC_LOCK_H +#define _BITS_LIBC_LOCK_H 1 + +#include <pthread.h> +#define __need_NULL +#include <stddef.h> + + +/* 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 <http://www.gnu.org/licenses/>. */ + +#ifndef _BITS_LIBC_LOCKP_H +#define _BITS_LIBC_LOCKP_H 1 + +#include <pthread.h> +#define __need_NULL +#include <stddef.h> + + +/* 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 <lowlevellock.h> +#include <tls.h> +#include <pthread-functions.h> + +/* 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _BITS_STDIO_LOCK_H +#define _BITS_STDIO_LOCK_H 1 + +#include <bits/libc-lock.h> +#include <lowlevellock.h> + + +/* 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 <unwind.h> +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 <unwind.h> 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 <unwind.h>], [ +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 + <http://www.gnu.org/licenses/>. */ + +/* 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 <assert.h> +#include <signal.h> +#include <pthreadP.h> +#include <lowlevellock.h> + +#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 <gai_misc.h> 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 <drepper@redhat.com>, 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 + <http://www.gnu.org/licenses/>. */ + +#include "pthreadP.h" + + +#define __pthread_enable_asynccancel __librt_enable_asynccancel +#define __pthread_disable_asynccancel __librt_disable_asynccancel +#include <nptl/cancellation.c> 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _MALLOC_MACHINE_H +#define _MALLOC_MACHINE_H + +#undef thread_atfork_static + +#include <atomic.h> +#include <bits/libc-lock.h> + +__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 <fork.h> + +#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 <bits/libc-tsd.h> + +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 <sysdeps/generic/malloc-machine.h> + +#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 <drepper@redhat.com>, 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _PTHREAD_FUNCTIONS_H +#define _PTHREAD_FUNCTIONS_H 1 + +#include <pthread.h> +#include <setjmp.h> +#include <internaltypes.h> +#include <sysdep.h> + +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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _PTHREAD_H +#define _PTHREAD_H 1 + +#include <features.h> +#include <endian.h> +#include <sched.h> +#include <time.h> + +#include <bits/pthreadtypes.h> +#include <bits/setjmp.h> +#include <bits/wordsize.h> + + +/* 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 + <http://www.gnu.org/licenses/>. */ + +#include <pthreadP.h> +#include <sysdep.h> + +#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 + <http://www.gnu.org/licenses/>. */ + +#include <nptl/pthreadP.h> + +#include <signal/sigfillset.c> 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 <rt/tst-mqueue8.c> 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 <jakub@redhat.com>. + + 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 <http://www.gnu.org/licenses/>. */ + +#include <dlfcn.h> +#include <stdio.h> +#include <unwind.h> +#include <pthreadP.h> +#include <sysdep.h> +#include <gnu/lib-names.h> + +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); +} |