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Diffstat (limited to 'REORG.TODO/nptl/pthreadP.h')
| -rw-r--r-- | REORG.TODO/nptl/pthreadP.h | 641 |
1 files changed, 641 insertions, 0 deletions
diff --git a/REORG.TODO/nptl/pthreadP.h b/REORG.TODO/nptl/pthreadP.h new file mode 100644 index 0000000000..7fc1e50f78 --- /dev/null +++ b/REORG.TODO/nptl/pthreadP.h @@ -0,0 +1,641 @@ +/* Copyright (C) 2002-2017 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/>. */ + +#ifndef _PTHREADP_H +#define _PTHREADP_H 1 + +#include <pthread.h> +#include <setjmp.h> +#include <stdbool.h> +#include <sys/syscall.h> +#include "descr.h" +#include <tls.h> +#include <lowlevellock.h> +#include <stackinfo.h> +#include <internaltypes.h> +#include <pthread-functions.h> +#include <atomic.h> +#include <kernel-features.h> +#include <errno.h> +#include <nptl-signals.h> + + +/* Atomic operations on TLS memory. */ +#ifndef THREAD_ATOMIC_CMPXCHG_VAL +# define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, new, old) \ + atomic_compare_and_exchange_val_acq (&(descr)->member, new, old) +#endif + +#ifndef THREAD_ATOMIC_BIT_SET +# define THREAD_ATOMIC_BIT_SET(descr, member, bit) \ + atomic_bit_set (&(descr)->member, bit) +#endif + + +/* Adaptive mutex definitions. */ +#ifndef MAX_ADAPTIVE_COUNT +# define MAX_ADAPTIVE_COUNT 100 +#endif + + +/* Magic cookie representing robust mutex with dead owner. */ +#define PTHREAD_MUTEX_INCONSISTENT INT_MAX +/* Magic cookie representing not recoverable robust mutex. */ +#define PTHREAD_MUTEX_NOTRECOVERABLE (INT_MAX - 1) + + +/* Internal mutex type value. */ +enum +{ + PTHREAD_MUTEX_KIND_MASK_NP = 3, + + PTHREAD_MUTEX_ELISION_NP = 256, + PTHREAD_MUTEX_NO_ELISION_NP = 512, + + PTHREAD_MUTEX_ROBUST_NORMAL_NP = 16, + PTHREAD_MUTEX_ROBUST_RECURSIVE_NP + = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_RECURSIVE_NP, + PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP + = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ERRORCHECK_NP, + PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP + = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ADAPTIVE_NP, + PTHREAD_MUTEX_PRIO_INHERIT_NP = 32, + PTHREAD_MUTEX_PI_NORMAL_NP + = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_NORMAL, + PTHREAD_MUTEX_PI_RECURSIVE_NP + = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_RECURSIVE_NP, + PTHREAD_MUTEX_PI_ERRORCHECK_NP + = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ERRORCHECK_NP, + PTHREAD_MUTEX_PI_ADAPTIVE_NP + = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ADAPTIVE_NP, + PTHREAD_MUTEX_PI_ROBUST_NORMAL_NP + = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NORMAL_NP, + PTHREAD_MUTEX_PI_ROBUST_RECURSIVE_NP + = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_RECURSIVE_NP, + PTHREAD_MUTEX_PI_ROBUST_ERRORCHECK_NP + = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP, + PTHREAD_MUTEX_PI_ROBUST_ADAPTIVE_NP + = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP, + PTHREAD_MUTEX_PRIO_PROTECT_NP = 64, + PTHREAD_MUTEX_PP_NORMAL_NP + = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_NORMAL, + PTHREAD_MUTEX_PP_RECURSIVE_NP + = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_RECURSIVE_NP, + PTHREAD_MUTEX_PP_ERRORCHECK_NP + = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ERRORCHECK_NP, + PTHREAD_MUTEX_PP_ADAPTIVE_NP + = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ADAPTIVE_NP, + PTHREAD_MUTEX_ELISION_FLAGS_NP + = PTHREAD_MUTEX_ELISION_NP | PTHREAD_MUTEX_NO_ELISION_NP, + + PTHREAD_MUTEX_TIMED_ELISION_NP = + PTHREAD_MUTEX_TIMED_NP | PTHREAD_MUTEX_ELISION_NP, + PTHREAD_MUTEX_TIMED_NO_ELISION_NP = + PTHREAD_MUTEX_TIMED_NP | PTHREAD_MUTEX_NO_ELISION_NP, +}; +#define PTHREAD_MUTEX_PSHARED_BIT 128 + +#define PTHREAD_MUTEX_TYPE(m) \ + ((m)->__data.__kind & 127) +/* Don't include NO_ELISION, as that type is always the same + as the underlying lock type. */ +#define PTHREAD_MUTEX_TYPE_ELISION(m) \ + ((m)->__data.__kind & (127|PTHREAD_MUTEX_ELISION_NP)) + +#if LLL_PRIVATE == 0 && LLL_SHARED == 128 +# define PTHREAD_MUTEX_PSHARED(m) \ + ((m)->__data.__kind & 128) +#else +# define PTHREAD_MUTEX_PSHARED(m) \ + (((m)->__data.__kind & 128) ? LLL_SHARED : LLL_PRIVATE) +#endif + +/* The kernel when waking robust mutexes on exit never uses + FUTEX_PRIVATE_FLAG FUTEX_WAKE. */ +#define PTHREAD_ROBUST_MUTEX_PSHARED(m) LLL_SHARED + +/* Ceiling in __data.__lock. __data.__lock is signed, so don't + use the MSB bit in there, but in the mask also include that bit, + so that the compiler can optimize & PTHREAD_MUTEX_PRIO_CEILING_MASK + masking if the value is then shifted down by + PTHREAD_MUTEX_PRIO_CEILING_SHIFT. */ +#define PTHREAD_MUTEX_PRIO_CEILING_SHIFT 19 +#define PTHREAD_MUTEX_PRIO_CEILING_MASK 0xfff80000 + + +/* Flags in mutex attr. */ +#define PTHREAD_MUTEXATTR_PROTOCOL_SHIFT 28 +#define PTHREAD_MUTEXATTR_PROTOCOL_MASK 0x30000000 +#define PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT 12 +#define PTHREAD_MUTEXATTR_PRIO_CEILING_MASK 0x00fff000 +#define PTHREAD_MUTEXATTR_FLAG_ROBUST 0x40000000 +#define PTHREAD_MUTEXATTR_FLAG_PSHARED 0x80000000 +#define PTHREAD_MUTEXATTR_FLAG_BITS \ + (PTHREAD_MUTEXATTR_FLAG_ROBUST | PTHREAD_MUTEXATTR_FLAG_PSHARED \ + | PTHREAD_MUTEXATTR_PROTOCOL_MASK | PTHREAD_MUTEXATTR_PRIO_CEILING_MASK) + + +/* For the following, see pthread_rwlock_common.c. */ +#define PTHREAD_RWLOCK_WRPHASE 1 +#define PTHREAD_RWLOCK_WRLOCKED 2 +#define PTHREAD_RWLOCK_RWAITING 4 +#define PTHREAD_RWLOCK_READER_SHIFT 3 +#define PTHREAD_RWLOCK_READER_OVERFLOW ((unsigned int) 1 \ + << (sizeof (unsigned int) * 8 - 1)) +#define PTHREAD_RWLOCK_WRHANDOVER ((unsigned int) 1 \ + << (sizeof (unsigned int) * 8 - 1)) +#define PTHREAD_RWLOCK_FUTEX_USED 2 + + +/* Bits used in robust mutex implementation. */ +#define FUTEX_WAITERS 0x80000000 +#define FUTEX_OWNER_DIED 0x40000000 +#define FUTEX_TID_MASK 0x3fffffff + + +/* pthread_once definitions. See __pthread_once for how these are used. */ +#define __PTHREAD_ONCE_INPROGRESS 1 +#define __PTHREAD_ONCE_DONE 2 +#define __PTHREAD_ONCE_FORK_GEN_INCR 4 + + +/* Condition variable definitions. See __pthread_cond_wait_common. + Need to be defined here so there is one place from which + nptl_lock_constants can grab them. */ +#define __PTHREAD_COND_CLOCK_MONOTONIC_MASK 2 +#define __PTHREAD_COND_SHARED_MASK 1 + + +/* Internal variables. */ + + +/* Default pthread attributes. */ +extern struct pthread_attr __default_pthread_attr attribute_hidden; +extern int __default_pthread_attr_lock attribute_hidden; + +/* Size and alignment of static TLS block. */ +extern size_t __static_tls_size attribute_hidden; +extern size_t __static_tls_align_m1 attribute_hidden; + +/* Flag whether the machine is SMP or not. */ +extern int __is_smp attribute_hidden; + +/* Thread descriptor handling. */ +extern list_t __stack_user; +hidden_proto (__stack_user) + +/* Attribute handling. */ +extern struct pthread_attr *__attr_list attribute_hidden; +extern int __attr_list_lock attribute_hidden; + +/* Concurrency handling. */ +extern int __concurrency_level attribute_hidden; + +/* Thread-local data key handling. */ +extern struct pthread_key_struct __pthread_keys[PTHREAD_KEYS_MAX]; +hidden_proto (__pthread_keys) + +/* Number of threads running. */ +extern unsigned int __nptl_nthreads attribute_hidden; + +#ifndef __ASSUME_SET_ROBUST_LIST +/* Negative if we do not have the system call and we can use it. */ +extern int __set_robust_list_avail attribute_hidden; +#endif + +/* Thread Priority Protection. */ +extern int __sched_fifo_min_prio attribute_hidden; +extern int __sched_fifo_max_prio attribute_hidden; +extern void __init_sched_fifo_prio (void) attribute_hidden; +extern int __pthread_tpp_change_priority (int prev_prio, int new_prio) + attribute_hidden; +extern int __pthread_current_priority (void) attribute_hidden; + +/* The library can run in debugging mode where it performs a lot more + tests. */ +extern int __pthread_debug attribute_hidden; +/** For now disable debugging support. */ +#if 0 +# define DEBUGGING_P __builtin_expect (__pthread_debug, 0) +# define INVALID_TD_P(pd) (DEBUGGING_P && __find_in_stack_list (pd) == NULL) +# define INVALID_NOT_TERMINATED_TD_P(pd) INVALID_TD_P (pd) +#else +# define DEBUGGING_P 0 +/* Simplified test. This will not catch all invalid descriptors but + is better than nothing. And if the test triggers the thread + descriptor is guaranteed to be invalid. */ +# define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0) +# define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0) +#endif + + +/* Cancellation test. */ +#define CANCELLATION_P(self) \ + do { \ + int cancelhandling = THREAD_GETMEM (self, cancelhandling); \ + if (CANCEL_ENABLED_AND_CANCELED (cancelhandling)) \ + { \ + THREAD_SETMEM (self, result, PTHREAD_CANCELED); \ + __do_cancel (); \ + } \ + } while (0) + + +extern void __pthread_unwind (__pthread_unwind_buf_t *__buf) + __cleanup_fct_attribute __attribute ((__noreturn__)) +#if !defined SHARED && !IS_IN (libpthread) + weak_function +#endif + ; +extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf) + __cleanup_fct_attribute __attribute ((__noreturn__)) +#ifndef SHARED + weak_function +#endif + ; +extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf) + __cleanup_fct_attribute; +extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf) + __cleanup_fct_attribute; +#if IS_IN (libpthread) +hidden_proto (__pthread_unwind) +hidden_proto (__pthread_unwind_next) +hidden_proto (__pthread_register_cancel) +hidden_proto (__pthread_unregister_cancel) +# ifdef SHARED +extern void attribute_hidden pthread_cancel_init (void); +extern void __unwind_freeres (void); +# endif +#endif + + +/* Called when a thread reacts on a cancellation request. */ +static inline void +__attribute ((noreturn, always_inline)) +__do_cancel (void) +{ + struct pthread *self = THREAD_SELF; + + /* Make sure we get no more cancellations. */ + THREAD_ATOMIC_BIT_SET (self, cancelhandling, EXITING_BIT); + + __pthread_unwind ((__pthread_unwind_buf_t *) + THREAD_GETMEM (self, cleanup_jmp_buf)); +} + + +/* Set cancellation mode to asynchronous. */ +#define CANCEL_ASYNC() \ + __pthread_enable_asynccancel () +/* Reset to previous cancellation mode. */ +#define CANCEL_RESET(oldtype) \ + __pthread_disable_asynccancel (oldtype) + +#if IS_IN (libc) +/* Same as CANCEL_ASYNC, but for use in libc.so. */ +# define LIBC_CANCEL_ASYNC() \ + __libc_enable_asynccancel () +/* Same as CANCEL_RESET, but for use in libc.so. */ +# define LIBC_CANCEL_RESET(oldtype) \ + __libc_disable_asynccancel (oldtype) +# define LIBC_CANCEL_HANDLED() \ + __asm (".globl " __SYMBOL_PREFIX "__libc_enable_asynccancel"); \ + __asm (".globl " __SYMBOL_PREFIX "__libc_disable_asynccancel") +#elif IS_IN (libpthread) +# define LIBC_CANCEL_ASYNC() CANCEL_ASYNC () +# define LIBC_CANCEL_RESET(val) CANCEL_RESET (val) +# define LIBC_CANCEL_HANDLED() \ + __asm (".globl " __SYMBOL_PREFIX "__pthread_enable_asynccancel"); \ + __asm (".globl " __SYMBOL_PREFIX "__pthread_disable_asynccancel") +#elif IS_IN (librt) +# define LIBC_CANCEL_ASYNC() \ + __librt_enable_asynccancel () +# define LIBC_CANCEL_RESET(val) \ + __librt_disable_asynccancel (val) +# define LIBC_CANCEL_HANDLED() \ + __asm (".globl " __SYMBOL_PREFIX "__librt_enable_asynccancel"); \ + __asm (".globl " __SYMBOL_PREFIX "__librt_disable_asynccancel") +#else +# define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */ +# define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */ +# define LIBC_CANCEL_HANDLED() /* Nothing. */ +#endif + + +/* Internal prototypes. */ + +/* Thread list handling. */ +extern struct pthread *__find_in_stack_list (struct pthread *pd) + attribute_hidden internal_function; + +/* Deallocate a thread's stack after optionally making sure the thread + descriptor is still valid. */ +extern void __free_tcb (struct pthread *pd) attribute_hidden internal_function; + +/* Free allocated stack. */ +extern void __deallocate_stack (struct pthread *pd) + attribute_hidden internal_function; + +/* Mark all the stacks except for the current one as available. This + function also re-initializes the lock for the stack cache. */ +extern void __reclaim_stacks (void) attribute_hidden; + +/* Make all threads's stacks executable. */ +extern int __make_stacks_executable (void **stack_endp) + internal_function attribute_hidden; + +/* longjmp handling. */ +extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe); +#if IS_IN (libpthread) +hidden_proto (__pthread_cleanup_upto) +#endif + + +/* Functions with versioned interfaces. */ +extern int __pthread_create_2_1 (pthread_t *newthread, + const pthread_attr_t *attr, + void *(*start_routine) (void *), void *arg); +extern int __pthread_create_2_0 (pthread_t *newthread, + const pthread_attr_t *attr, + void *(*start_routine) (void *), void *arg); +extern int __pthread_attr_init_2_1 (pthread_attr_t *attr); +extern int __pthread_attr_init_2_0 (pthread_attr_t *attr); + + +/* Event handlers for libthread_db interface. */ +extern void __nptl_create_event (void); +extern void __nptl_death_event (void); +hidden_proto (__nptl_create_event) +hidden_proto (__nptl_death_event) + +/* Register the generation counter in the libpthread with the libc. */ +#ifdef TLS_MULTIPLE_THREADS_IN_TCB +extern void __libc_pthread_init (unsigned long int *ptr, + void (*reclaim) (void), + const struct pthread_functions *functions) + internal_function; +#else +extern int *__libc_pthread_init (unsigned long int *ptr, + void (*reclaim) (void), + const struct pthread_functions *functions) + internal_function; + +/* Variable set to a nonzero value either if more than one thread runs or ran, + or if a single-threaded process is trying to cancel itself. See + nptl/descr.h for more context on the single-threaded process case. */ +extern int __pthread_multiple_threads attribute_hidden; +/* Pointer to the corresponding variable in libc. */ +extern int *__libc_multiple_threads_ptr attribute_hidden; +#endif + +/* Find a thread given its TID. */ +extern struct pthread *__find_thread_by_id (pid_t tid) attribute_hidden +#ifdef SHARED +; +#else +weak_function; +#define __find_thread_by_id(tid) \ + (__find_thread_by_id ? (__find_thread_by_id) (tid) : (struct pthread *) NULL) +#endif + +extern void __pthread_init_static_tls (struct link_map *) attribute_hidden; + +extern size_t __pthread_get_minstack (const pthread_attr_t *attr); + +/* Namespace save aliases. */ +extern int __pthread_getschedparam (pthread_t thread_id, int *policy, + struct sched_param *param); +extern int __pthread_setschedparam (pthread_t thread_id, int policy, + const struct sched_param *param); +extern int __pthread_setcancelstate (int state, int *oldstate); +extern int __pthread_mutex_init (pthread_mutex_t *__mutex, + const pthread_mutexattr_t *__mutexattr); +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_cond_lock (pthread_mutex_t *__mutex) + attribute_hidden internal_function; +extern void __pthread_mutex_cond_lock_adjust (pthread_mutex_t *__mutex) + attribute_hidden internal_function; +extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex); +extern int __pthread_mutex_unlock_usercnt (pthread_mutex_t *__mutex, + int __decr) + attribute_hidden internal_function; +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_attr_destroy (pthread_attr_t *attr); +extern int __pthread_attr_getdetachstate (const pthread_attr_t *attr, + int *detachstate); +extern int __pthread_attr_setdetachstate (pthread_attr_t *attr, + int detachstate); +extern int __pthread_attr_getinheritsched (const pthread_attr_t *attr, + int *inherit); +extern int __pthread_attr_setinheritsched (pthread_attr_t *attr, int inherit); +extern int __pthread_attr_getschedparam (const pthread_attr_t *attr, + struct sched_param *param); +extern int __pthread_attr_setschedparam (pthread_attr_t *attr, + const struct sched_param *param); +extern int __pthread_attr_getschedpolicy (const pthread_attr_t *attr, + int *policy); +extern int __pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy); +extern int __pthread_attr_getscope (const pthread_attr_t *attr, int *scope); +extern int __pthread_attr_setscope (pthread_attr_t *attr, int scope); +extern int __pthread_attr_getstackaddr (const pthread_attr_t *__restrict + __attr, void **__restrict __stackaddr); +extern int __pthread_attr_setstackaddr (pthread_attr_t *__attr, + void *__stackaddr); +extern int __pthread_attr_getstacksize (const pthread_attr_t *__restrict + __attr, + size_t *__restrict __stacksize); +extern int __pthread_attr_setstacksize (pthread_attr_t *__attr, + size_t __stacksize); +extern int __pthread_attr_getstack (const pthread_attr_t *__restrict __attr, + void **__restrict __stackaddr, + size_t *__restrict __stacksize); +extern int __pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr, + size_t __stacksize); +extern int __pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock, + const pthread_rwlockattr_t *__restrict + __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_cond_broadcast (pthread_cond_t *cond); +extern int __pthread_cond_destroy (pthread_cond_t *cond); +extern int __pthread_cond_init (pthread_cond_t *cond, + const pthread_condattr_t *cond_attr); +extern int __pthread_cond_signal (pthread_cond_t *cond); +extern int __pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex); +extern int __pthread_cond_timedwait (pthread_cond_t *cond, + pthread_mutex_t *mutex, + const struct timespec *abstime); +extern int __pthread_condattr_destroy (pthread_condattr_t *attr); +extern int __pthread_condattr_init (pthread_condattr_t *attr); +extern int __pthread_key_create (pthread_key_t *key, void (*destr) (void *)); +extern void *__pthread_getspecific (pthread_key_t key); +extern int __pthread_setspecific (pthread_key_t key, const void *value); +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)); +extern pthread_t __pthread_self (void); +extern int __pthread_equal (pthread_t thread1, pthread_t thread2); +extern int __pthread_kill (pthread_t threadid, int signo); +extern void __pthread_exit (void *value) __attribute__ ((__noreturn__)); +extern int __pthread_setcanceltype (int type, int *oldtype); +extern int __pthread_enable_asynccancel (void) attribute_hidden; +extern void __pthread_disable_asynccancel (int oldtype) + internal_function attribute_hidden; +extern void __pthread_testcancel (void); + +#if IS_IN (libpthread) +hidden_proto (__pthread_mutex_init) +hidden_proto (__pthread_mutex_destroy) +hidden_proto (__pthread_mutex_lock) +hidden_proto (__pthread_mutex_unlock) +hidden_proto (__pthread_rwlock_rdlock) +hidden_proto (__pthread_rwlock_wrlock) +hidden_proto (__pthread_rwlock_unlock) +hidden_proto (__pthread_key_create) +hidden_proto (__pthread_getspecific) +hidden_proto (__pthread_setspecific) +hidden_proto (__pthread_once) +hidden_proto (__pthread_setcancelstate) +hidden_proto (__pthread_testcancel) +#endif + +extern int __pthread_cond_broadcast_2_0 (pthread_cond_2_0_t *cond); +extern int __pthread_cond_destroy_2_0 (pthread_cond_2_0_t *cond); +extern int __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond, + const pthread_condattr_t *cond_attr); +extern int __pthread_cond_signal_2_0 (pthread_cond_2_0_t *cond); +extern int __pthread_cond_timedwait_2_0 (pthread_cond_2_0_t *cond, + pthread_mutex_t *mutex, + const struct timespec *abstime); +extern int __pthread_cond_wait_2_0 (pthread_cond_2_0_t *cond, + pthread_mutex_t *mutex); + +extern int __pthread_getaffinity_np (pthread_t th, size_t cpusetsize, + cpu_set_t *cpuset); + +/* The two functions are in libc.so and not exported. */ +extern int __libc_enable_asynccancel (void) attribute_hidden; +extern void __libc_disable_asynccancel (int oldtype) + internal_function attribute_hidden; + + +/* The two functions are in librt.so and not exported. */ +extern int __librt_enable_asynccancel (void) attribute_hidden; +extern void __librt_disable_asynccancel (int oldtype) + internal_function attribute_hidden; + +#if IS_IN (libpthread) +/* Special versions which use non-exported functions. */ +extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer, + void (*routine) (void *), void *arg) + attribute_hidden; + +/* Replace cleanup macros defined in <pthread.h> with internal + versions that don't depend on unwind info and better support + cancellation. */ +# undef pthread_cleanup_push +# define pthread_cleanup_push(routine,arg) \ + { struct _pthread_cleanup_buffer _buffer; \ + __pthread_cleanup_push (&_buffer, (routine), (arg)); + +extern void __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer, + int execute) attribute_hidden; +# undef pthread_cleanup_pop +# define pthread_cleanup_pop(execute) \ + __pthread_cleanup_pop (&_buffer, (execute)); } +#endif + +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); + +/* Old cleanup interfaces, still used in libc.so. */ +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); + +extern void __nptl_deallocate_tsd (void) attribute_hidden; + +extern void __nptl_setxid_error (struct xid_command *cmdp, int error) + attribute_hidden; +extern int __nptl_setxid (struct xid_command *cmdp) attribute_hidden; +#ifndef SHARED +extern void __nptl_set_robust (struct pthread *self); +#endif + +extern void __free_stacks (size_t limit) attribute_hidden; + +extern void __wait_lookup_done (void) attribute_hidden; + +#ifdef SHARED +# define PTHREAD_STATIC_FN_REQUIRE(name) +#else +# define PTHREAD_STATIC_FN_REQUIRE(name) __asm (".globl " #name); +#endif + +/* Returns 0 if POL is a valid scheduling policy. */ +static inline int +check_sched_policy_attr (int pol) +{ + if (pol == SCHED_OTHER || pol == SCHED_FIFO || pol == SCHED_RR) + return 0; + + return EINVAL; +} + +/* Returns 0 if PR is within the accepted range of priority values for + the scheduling policy POL or EINVAL otherwise. */ +static inline int +check_sched_priority_attr (int pr, int pol) +{ + int min = __sched_get_priority_min (pol); + int max = __sched_get_priority_max (pol); + + if (min >= 0 && max >= 0 && pr >= min && pr <= max) + return 0; + + return EINVAL; +} + +/* Returns 0 if ST is a valid stack size for a thread stack and EINVAL + otherwise. */ +static inline int +check_stacksize_attr (size_t st) +{ + if (st >= PTHREAD_STACK_MIN) + return 0; + + return EINVAL; +} + +#endif /* pthreadP.h */ |