mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
911 lines
29 KiB
C
911 lines
29 KiB
C
/* Posix threads. Hurd version.
|
||
Copyright (C) 2000-2024 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
|
||
<https://www.gnu.org/licenses/>. */
|
||
|
||
/*
|
||
* POSIX Threads Extension: ??? <pthread.h>
|
||
*/
|
||
|
||
#ifndef _PTHREAD_H
|
||
#define _PTHREAD_H 1
|
||
|
||
#include <features.h>
|
||
|
||
#include <sys/cdefs.h>
|
||
#ifndef __extern_inline
|
||
/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
|
||
inline semantics, unless -fgnu89-inline is used. */
|
||
# if !defined __cplusplus || __GNUC_PREREQ (4,3)
|
||
# if defined __GNUC_STDC_INLINE__ || defined __cplusplus
|
||
# define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
|
||
# if __GNUC_PREREQ (4,3)
|
||
# define __extern_always_inline \
|
||
extern __always_inline __attribute__ ((__gnu_inline__, __artificial__))
|
||
# else
|
||
# define __extern_always_inline \
|
||
extern __always_inline __attribute__ ((__gnu_inline__))
|
||
# endif
|
||
# else
|
||
# define __extern_inline extern __inline
|
||
# define __extern_always_inline extern __always_inline
|
||
# endif
|
||
# endif
|
||
#endif
|
||
|
||
#include <sched.h>
|
||
#include <time.h>
|
||
|
||
__BEGIN_DECLS
|
||
|
||
#include <bits/pthreadtypes.h>
|
||
|
||
#include <bits/pthread.h>
|
||
|
||
/* Possible values for the process shared attribute. */
|
||
#define PTHREAD_PROCESS_PRIVATE __PTHREAD_PROCESS_PRIVATE
|
||
#define PTHREAD_PROCESS_SHARED __PTHREAD_PROCESS_SHARED
|
||
|
||
|
||
/* Thread attributes. */
|
||
|
||
/* Possible values for the inheritsched attribute. */
|
||
#define PTHREAD_EXPLICIT_SCHED __PTHREAD_EXPLICIT_SCHED
|
||
#define PTHREAD_INHERIT_SCHED __PTHREAD_INHERIT_SCHED
|
||
|
||
/* Possible values for the `contentionscope' attribute. */
|
||
#define PTHREAD_SCOPE_SYSTEM __PTHREAD_SCOPE_SYSTEM
|
||
#define PTHREAD_SCOPE_PROCESS __PTHREAD_SCOPE_PROCESS
|
||
|
||
/* Possible values for the `detachstate' attribute. */
|
||
#define PTHREAD_CREATE_JOINABLE __PTHREAD_CREATE_JOINABLE
|
||
#define PTHREAD_CREATE_DETACHED __PTHREAD_CREATE_DETACHED
|
||
|
||
#include <bits/types/struct___pthread_attr.h>
|
||
|
||
/* Initialize the thread attribute object in *ATTR to the default
|
||
values. */
|
||
extern int pthread_attr_init (pthread_attr_t *__attr) __THROW __nonnull ((1));
|
||
|
||
/* Destroy the thread attribute object in *ATTR. */
|
||
extern int pthread_attr_destroy (pthread_attr_t *__attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Return the value of the inheritsched attribute in *ATTR in
|
||
*INHERITSCHED. */
|
||
extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict __attr,
|
||
int *__restrict __inheritsched)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the inheritsched attribute in *ATTR to
|
||
INHERITSCHED. */
|
||
extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
|
||
int __inheritsched)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Return the value of the schedparam attribute in *ATTR in *PARAM. */
|
||
extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr,
|
||
struct sched_param *__restrict __param)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the schedparam attribute in *ATTR to PARAM. */
|
||
extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr,
|
||
const struct sched_param *__restrict
|
||
__param) __THROW __nonnull ((1, 2));
|
||
|
||
|
||
/* Return the value of the schedpolicy attribute in *ATTR to *POLICY. */
|
||
extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict __attr,
|
||
int *__restrict __policy)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the schedpolicy attribute in *ATTR to POLICY. */
|
||
extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr,
|
||
int __policy)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Return the value of the contentionscope attribute in *ATTR in
|
||
*CONTENTIONSCOPE. */
|
||
extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr,
|
||
int *__restrict __contentionscope)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the contentionscope attribute in *ATTR to
|
||
CONTENTIONSCOPE. */
|
||
extern int pthread_attr_setscope (pthread_attr_t *__attr,
|
||
int __contentionscope)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Return the value of the stackaddr attribute in *ATTR in
|
||
*STACKADDR. */
|
||
extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict __attr,
|
||
void **__restrict __stackaddr)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the stackaddr attribute in *ATTR to STACKADDR. */
|
||
extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
|
||
void *__stackaddr)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
#ifdef __USE_XOPEN2K
|
||
/* Return the value of the stackaddr and stacksize attributes in *ATTR
|
||
in *STACKADDR and *STACKSIZE respectively. */
|
||
extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
|
||
void **__restrict __stackaddr,
|
||
size_t *__restrict __stacksize)
|
||
__THROW __nonnull ((1, 2, 3));
|
||
|
||
/* Set the value of the stackaddr and stacksize attributes in *ATTR to
|
||
STACKADDR and STACKSIZE respectively. */
|
||
extern int pthread_attr_setstack (pthread_attr_t *__attr,
|
||
void *__stackaddr,
|
||
size_t __stacksize)
|
||
__THROW __nonnull ((1));
|
||
#endif
|
||
|
||
|
||
/* Return the value of the detachstate attribute in *ATTR in
|
||
*DETACHSTATE. */
|
||
extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr,
|
||
int *__detachstate)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the detachstate attribute in *ATTR to
|
||
DETACHSTATE. */
|
||
extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
|
||
int __detachstate)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Return the value of the guardsize attribute in *ATTR in
|
||
*GUARDSIZE. */
|
||
extern int pthread_attr_getguardsize (const pthread_attr_t *__restrict __attr,
|
||
size_t *__restrict __guardsize)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the guardsize attribute in *ATTR to GUARDSIZE. */
|
||
extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
|
||
size_t __guardsize)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Return the value of the stacksize attribute in *ATTR in
|
||
*STACKSIZE. */
|
||
extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict __attr,
|
||
size_t *__restrict __stacksize)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the stacksize attribute in *ATTR to STACKSIZE. */
|
||
extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
|
||
size_t __stacksize)
|
||
__THROW __nonnull ((1));
|
||
|
||
#ifdef __USE_GNU
|
||
/* Initialize thread attribute *ATTR with attributes corresponding to the
|
||
already running thread THREAD. It shall be called on an uninitialized ATTR
|
||
and destroyed with pthread_attr_destroy when no longer needed. */
|
||
extern int pthread_getattr_np (pthread_t __thr, pthread_attr_t *__attr)
|
||
__THROW __nonnull ((2));
|
||
#endif
|
||
|
||
|
||
/* Create a thread with attributes given by ATTR, executing
|
||
START_ROUTINE with argument ARG. */
|
||
extern int pthread_create (pthread_t *__restrict __threadp,
|
||
__const pthread_attr_t *__restrict __attr,
|
||
void *(*__start_routine)(void *),
|
||
void *__restrict __arg) __THROWNL __nonnull ((1, 3));
|
||
|
||
/* Terminate the current thread and make STATUS available to any
|
||
thread that might join us. */
|
||
extern void pthread_exit (void *__status) __attribute__ ((__noreturn__));
|
||
|
||
/* Make calling thread wait for termination of thread THREAD. Return
|
||
the exit status of the thread in *STATUS. */
|
||
extern int pthread_join (pthread_t __threadp, void **__status);
|
||
|
||
#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);
|
||
|
||
/* Make calling thread wait for termination of the thread TH, but only
|
||
until TIMEOUT measured against the clock specified by CLOCKID. 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_clockjoin_np (pthread_t __th, void **__thread_return,
|
||
clockid_t __clockid,
|
||
const struct timespec *__abstime);
|
||
#endif
|
||
|
||
/* Indicate that the storage for THREAD can be reclaimed when it
|
||
terminates. */
|
||
extern int pthread_detach (pthread_t __threadp);
|
||
|
||
/* Compare thread IDs T1 and T2. Return nonzero if they are equal, 0
|
||
if they are not. */
|
||
extern int pthread_equal (pthread_t __t1, pthread_t __t2);
|
||
|
||
#ifdef __USE_EXTERN_INLINES
|
||
|
||
__extern_inline int
|
||
pthread_equal (pthread_t __t1, pthread_t __t2)
|
||
{
|
||
return __pthread_equal (__t1, __t2);
|
||
}
|
||
|
||
#endif /* Use extern inlines. */
|
||
|
||
|
||
/* Return the thread ID of the calling thread. */
|
||
extern pthread_t pthread_self (void) __THROW;
|
||
|
||
|
||
/* Mutex attributes. */
|
||
|
||
#define PTHREAD_PRIO_NONE_NP __PTHREAD_PRIO_NONE
|
||
#define PTHREAD_PRIO_INHERIT_NP __PTHREAD_PRIO_INHERIT
|
||
#define PTHREAD_PRIO_PROTECT_NP __PTHREAD_PRIO_PROTECT
|
||
#ifdef __USE_UNIX98
|
||
# define PTHREAD_PRIO_NONE PTHREAD_PRIO_NONE_NP
|
||
# define PTHREAD_PRIO_INHERIT PTHREAD_PRIO_INHERIT_NP
|
||
# define PTHREAD_PRIO_PROTECT PTHREAD_PRIO_PROTECT_NP
|
||
#endif
|
||
|
||
#define PTHREAD_MUTEX_TIMED_NP __PTHREAD_MUTEX_TIMED
|
||
#define PTHREAD_MUTEX_ERRORCHECK_NP __PTHREAD_MUTEX_ERRORCHECK
|
||
#define PTHREAD_MUTEX_RECURSIVE_NP __PTHREAD_MUTEX_RECURSIVE
|
||
#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
|
||
# define PTHREAD_MUTEX_NORMAL PTHREAD_MUTEX_TIMED_NP
|
||
# define PTHREAD_MUTEX_ERRORCHECK PTHREAD_MUTEX_ERRORCHECK_NP
|
||
# define PTHREAD_MUTEX_RECURSIVE PTHREAD_MUTEX_RECURSIVE_NP
|
||
# define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
|
||
#endif
|
||
#ifdef __USE_GNU
|
||
/* For compatibility. */
|
||
# define PTHREAD_MUTEX_FAST_NP PTHREAD_MUTEX_TIMED_NP
|
||
#endif
|
||
|
||
#ifdef __USE_XOPEN2K
|
||
# define PTHREAD_MUTEX_STALLED __PTHREAD_MUTEX_STALLED
|
||
# define PTHREAD_MUTEX_ROBUST __PTHREAD_MUTEX_ROBUST
|
||
# define PTHREAD_MUTEX_ROBUST_NP __PTHREAD_MUTEX_ROBUST
|
||
#endif
|
||
|
||
#include <bits/types/struct___pthread_mutexattr.h>
|
||
|
||
/* Initialize the mutex attribute object in *ATTR to the default
|
||
values. */
|
||
extern int pthread_mutexattr_init(pthread_mutexattr_t *__attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Destroy the mutex attribute structure in *ATTR. */
|
||
extern int pthread_mutexattr_destroy(pthread_mutexattr_t *__attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
#ifdef __USE_UNIX98
|
||
/* Return the value of the prioceiling attribute in *ATTR in
|
||
*PRIOCEILING. */
|
||
extern int pthread_mutexattr_getprioceiling(const pthread_mutexattr_t *__restrict __attr,
|
||
int *__restrict __prioceiling)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the prioceiling attribute in *ATTR to
|
||
PRIOCEILING. */
|
||
extern int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *__attr,
|
||
int __prioceiling)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Return the value of the protocol attribute in *ATTR in
|
||
*PROTOCOL. */
|
||
extern int pthread_mutexattr_getprotocol(const pthread_mutexattr_t *__restrict __attr,
|
||
int *__restrict __protocol)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the protocol attribute in *ATTR to PROTOCOL. */
|
||
extern int pthread_mutexattr_setprotocol(pthread_mutexattr_t *__attr,
|
||
int __protocol)
|
||
__THROW __nonnull ((1));
|
||
#endif
|
||
|
||
#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
|
||
|
||
|
||
/* Return the value of the process shared attribute in *ATTR in
|
||
*PSHARED. */
|
||
extern int pthread_mutexattr_getpshared(const pthread_mutexattr_t *__restrict __attr,
|
||
int *__restrict __pshared)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the process shared attribute in *ATTR to
|
||
PSHARED. */
|
||
extern int pthread_mutexattr_setpshared(pthread_mutexattr_t *__attr,
|
||
int __pshared)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
|
||
/* Return the value of the type attribute in *ATTR in *TYPE. */
|
||
extern int pthread_mutexattr_gettype(const pthread_mutexattr_t *__restrict __attr,
|
||
int *__restrict __type)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the type attribute in *ATTR to TYPE. */
|
||
extern int pthread_mutexattr_settype(pthread_mutexattr_t *__attr,
|
||
int __type)
|
||
__THROW __nonnull ((1));
|
||
#endif
|
||
|
||
|
||
/* Mutexes. */
|
||
|
||
#include <bits/types/struct___pthread_mutex.h>
|
||
|
||
#define PTHREAD_MUTEX_INITIALIZER __PTHREAD_MUTEX_INITIALIZER
|
||
/* Static initializer for recursive mutexes. */
|
||
|
||
#ifdef __USE_GNU
|
||
# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
|
||
__PTHREAD_ERRORCHECK_MUTEX_INITIALIZER
|
||
# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
|
||
__PTHREAD_RECURSIVE_MUTEX_INITIALIZER
|
||
#endif
|
||
|
||
/* Create a mutex with attributes given by ATTR and store it in
|
||
*__MUTEX. */
|
||
extern int pthread_mutex_init (struct __pthread_mutex *__restrict __mutex,
|
||
const pthread_mutexattr_t *__restrict __attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Destroy the mutex __MUTEX. */
|
||
extern int pthread_mutex_destroy (struct __pthread_mutex *__mutex)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Wait until lock for MUTEX becomes available and lock it. */
|
||
extern int pthread_mutex_lock (pthread_mutex_t *__mutex);
|
||
|
||
/* Try to lock MUTEX. */
|
||
extern int pthread_mutex_trylock (pthread_mutex_t *__mutex)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
#ifdef __USE_XOPEN2K
|
||
/* Try to lock MUTEX, block until *ABSTIME if it is already held. */
|
||
extern int pthread_mutex_timedlock (struct __pthread_mutex *__restrict __mutex,
|
||
const struct timespec *__restrict __abstime)
|
||
__THROWNL __nonnull ((1, 2));
|
||
#endif
|
||
|
||
#ifdef __USE_GNU
|
||
extern int pthread_mutex_clocklock (pthread_mutex_t *__restrict __mutex,
|
||
clockid_t __clockid,
|
||
const struct timespec *__restrict
|
||
__abstime) __THROWNL __nonnull ((1, 3));
|
||
#endif
|
||
|
||
/* Unlock MUTEX. */
|
||
extern int pthread_mutex_unlock (pthread_mutex_t *__mutex)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
/* Transfer ownership of the mutex MUTEX to the thread TID. The
|
||
caller must own the lock. */
|
||
extern int __pthread_mutex_transfer_np (struct __pthread_mutex *__mutex,
|
||
pthread_t __tid)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
|
||
#ifdef __USE_UNIX98
|
||
/* Return the priority ceiling of mutex *MUTEX in *PRIOCEILING. */
|
||
extern int pthread_mutex_getprioceiling (const pthread_mutex_t *__restrict __mutex,
|
||
int *__restrict __prioceiling)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* After acquiring the mutex *MUTEX, set its priority ceiling to PRIO
|
||
and return the old priority ceiling in *OLDPRIO. Before returning,
|
||
release the mutex. */
|
||
extern int pthread_mutex_setprioceiling (pthread_mutex_t *__restrict __mutex,
|
||
int __prio, int *__restrict __oldprio)
|
||
__THROW __nonnull ((1, 3));
|
||
#endif
|
||
|
||
#ifdef __USE_XOPEN2K8
|
||
|
||
/* Declare the state protected by robust mutex MTXP as consistent. */
|
||
extern int pthread_mutex_consistent (pthread_mutex_t *__mtxp)
|
||
__THROW __nonnull ((1));
|
||
|
||
# ifdef __USE_GNU
|
||
extern int pthread_mutex_consistent_np (pthread_mutex_t *__mtxp)
|
||
__THROW __nonnull ((1));
|
||
# endif
|
||
#endif
|
||
|
||
|
||
|
||
/* Condition attributes. */
|
||
|
||
#include <bits/types/struct___pthread_condattr.h>
|
||
|
||
/* Initialize the condition attribute in *ATTR to the default
|
||
values. */
|
||
extern int pthread_condattr_init (pthread_condattr_t *__attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Destroy the condition attribute structure in *ATTR. */
|
||
extern int pthread_condattr_destroy (pthread_condattr_t *__attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
#ifdef __USE_XOPEN2K
|
||
/* Return the value of the clock attribute in *ATTR in *CLOCK_ID. */
|
||
extern int pthread_condattr_getclock (const pthread_condattr_t *__restrict __attr,
|
||
__clockid_t *__restrict __clock_id)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the clock attribute in *ATTR to CLOCK_ID. */
|
||
extern int pthread_condattr_setclock (pthread_condattr_t *__attr,
|
||
__clockid_t __clock_id)
|
||
__THROW __nonnull ((1));
|
||
#endif
|
||
|
||
|
||
/* Return the value of the process shared attribute in *ATTR in
|
||
*PSHARED. */
|
||
extern int pthread_condattr_getpshared (const pthread_condattr_t *__restrict __attr,
|
||
int *__restrict __pshared)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the process shared attribute in *ATTR to
|
||
PSHARED. */
|
||
extern int pthread_condattr_setpshared (pthread_condattr_t *__attr,
|
||
int __pshared)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Condition variables. */
|
||
|
||
#include <bits/types/struct___pthread_cond.h>
|
||
|
||
#define PTHREAD_COND_INITIALIZER __PTHREAD_COND_INITIALIZER
|
||
|
||
extern int pthread_cond_init (pthread_cond_t *__restrict __cond,
|
||
const pthread_condattr_t *__restrict __attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
extern int pthread_cond_destroy (pthread_cond_t *__cond)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Unblock at least one of the threads that are blocked on condition
|
||
variable COND. */
|
||
extern int pthread_cond_signal (pthread_cond_t *__cond)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
/* Unblock all threads that are blocked on condition variable COND. */
|
||
extern int pthread_cond_broadcast (pthread_cond_t *__cond)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
/* Block on condition variable COND. MUTEX should be held by the
|
||
calling thread. On success, MUTEX will be held by the calling
|
||
thread. */
|
||
extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
|
||
pthread_mutex_t *__restrict __mutex)
|
||
__nonnull ((1, 2));
|
||
|
||
/* Block on condition variable COND. MUTEX should be held by the
|
||
calling thread. On success, MUTEX will be held by the calling
|
||
thread. If the time specified by ABSTIME passes, ETIMEDOUT is
|
||
returned, and MUTEX will nevertheless be held. */
|
||
extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
|
||
pthread_mutex_t *__restrict __mutex,
|
||
__const struct timespec *__restrict __abstime)
|
||
__nonnull ((1, 2, 3));
|
||
|
||
# ifdef __USE_GNU
|
||
/* Wait for condition variable COND to be signaled or broadcast until
|
||
ABSTIME measured by the specified clock. MUTEX is assumed to be
|
||
locked before. CLOCK is the clock to use. ABSTIME is an absolute
|
||
time specification against CLOCK's epoch.
|
||
|
||
This function is a cancellation point and therefore not marked with
|
||
__THROW. */
|
||
extern int pthread_cond_clockwait (pthread_cond_t *__restrict __cond,
|
||
pthread_mutex_t *__restrict __mutex,
|
||
__clockid_t __clock_id,
|
||
const struct timespec *__restrict __abstime)
|
||
__nonnull ((1, 2, 4));
|
||
# endif
|
||
|
||
|
||
/* Spin locks. */
|
||
|
||
#ifdef __USE_XOPEN2K
|
||
|
||
# include <bits/types/__pthread_spinlock_t.h>
|
||
|
||
# define PTHREAD_SPINLOCK_INITIALIZER __PTHREAD_SPIN_LOCK_INITIALIZER
|
||
|
||
/* Destroy the spin lock object LOCK. */
|
||
extern int pthread_spin_destroy (pthread_spinlock_t *__lock)
|
||
__nonnull ((1));
|
||
|
||
/* Initialize the spin lock object LOCK. PSHARED determines whether
|
||
the spin lock can be operated upon by multiple processes. */
|
||
extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
|
||
__nonnull ((1));
|
||
|
||
/* Lock the spin lock object LOCK. If the lock is held by another
|
||
thread spin until it becomes available. */
|
||
extern int pthread_spin_lock (pthread_spinlock_t *__lock)
|
||
__nonnull ((1));
|
||
|
||
/* Lock the spin lock object LOCK. Fail if the lock is held by
|
||
another thread. */
|
||
extern int pthread_spin_trylock (pthread_spinlock_t *__lock)
|
||
__nonnull ((1));
|
||
|
||
/* Unlock the spin lock object LOCK. */
|
||
extern int pthread_spin_unlock (pthread_spinlock_t *__lock)
|
||
__nonnull ((1));
|
||
|
||
#endif /* XPG6. */
|
||
|
||
|
||
/* rwlock attributes. */
|
||
|
||
#if defined __USE_UNIX98 || defined __USE_XOPEN2K
|
||
|
||
# include <bits/types/struct___pthread_rwlockattr.h>
|
||
|
||
/* Initialize rwlock attribute object in *ATTR to the default
|
||
values. */
|
||
extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Destroy the rwlock attribute object in *ATTR. */
|
||
extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Return the value of the process shared attribute in *ATTR in
|
||
*PSHARED. */
|
||
extern int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *__restrict __attr,
|
||
int *__restrict __pshared)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the process shared attribute in *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));
|
||
|
||
|
||
/* rwlocks. */
|
||
|
||
# include <bits/types/struct___pthread_rwlock.h>
|
||
|
||
# define PTHREAD_RWLOCK_INITIALIZER __PTHREAD_RWLOCK_INITIALIZER
|
||
/* Create a rwlock object with attributes given by ATTR and store the
|
||
result in *RWLOCK. */
|
||
extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
|
||
const pthread_rwlockattr_t *__restrict __attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Destroy the rwlock *RWLOCK. */
|
||
extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Acquire the rwlock *RWLOCK for reading. */
|
||
extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
/* Acquire the rwlock *RWLOCK for reading. */
|
||
extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
# ifdef __USE_XOPEN2K
|
||
/* Acquire the rwlock *RWLOCK for reading blocking until *ABSTIME if
|
||
it is already held. */
|
||
extern int pthread_rwlock_timedrdlock (struct __pthread_rwlock *__restrict __rwlock,
|
||
const struct timespec *__restrict __abstime)
|
||
__THROWNL __nonnull ((1, 2));
|
||
# endif
|
||
|
||
# ifdef __USE_GNU
|
||
extern int pthread_rwlock_clockrdlock (pthread_rwlock_t *__restrict __rwlock,
|
||
clockid_t __clockid,
|
||
const struct timespec *__restrict
|
||
__abstime) __THROWNL __nonnull ((1, 3));
|
||
# endif
|
||
|
||
/* Acquire the rwlock *RWLOCK for writing. */
|
||
extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
/* Try to acquire the rwlock *RWLOCK for writing. */
|
||
extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
# ifdef __USE_XOPEN2K
|
||
/* Acquire the rwlock *RWLOCK for writing blocking until *ABSTIME if
|
||
it is already held. */
|
||
extern int pthread_rwlock_timedwrlock (struct __pthread_rwlock *__restrict __rwlock,
|
||
const struct timespec *__restrict __abstime)
|
||
__THROWNL __nonnull ((1, 2));
|
||
# endif
|
||
|
||
# ifdef __USE_GNU
|
||
extern int pthread_rwlock_clockwrlock (pthread_rwlock_t *__restrict __rwlock,
|
||
clockid_t __clockid,
|
||
const struct timespec *__restrict
|
||
__abstime) __THROWNL __nonnull ((1, 3));
|
||
# endif
|
||
|
||
/* Release the lock held by the current thread on *RWLOCK. */
|
||
extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock)
|
||
__THROWNL __nonnull ((1));
|
||
|
||
#endif /* __USE_UNIX98 || __USE_XOPEN2K */
|
||
|
||
|
||
|
||
/* Cancellation. */
|
||
|
||
/* Register a cleanup handler. */
|
||
extern void pthread_cleanup_push (void (*__routine) (void *), void *__arg);
|
||
|
||
/* Unregister a cleanup handler. */
|
||
extern void pthread_cleanup_pop (int __execute);
|
||
|
||
#include <bits/cancelation.h>
|
||
|
||
#define pthread_cleanup_push(rt, rtarg) __pthread_cleanup_push(rt, rtarg)
|
||
#define pthread_cleanup_pop(execute) __pthread_cleanup_pop(execute)
|
||
|
||
#define PTHREAD_CANCEL_DISABLE 0
|
||
#define PTHREAD_CANCEL_ENABLE 1
|
||
|
||
/* Return the calling thread's cancelation state in *OLDSTATE and set
|
||
its state to STATE. */
|
||
extern int pthread_setcancelstate (int __state, int *__oldstate);
|
||
|
||
#define PTHREAD_CANCEL_DEFERRED 0
|
||
#define PTHREAD_CANCEL_ASYNCHRONOUS 1
|
||
|
||
/* Return the calling thread's cancelation type in *OLDTYPE and set
|
||
its type to TYPE. */
|
||
extern int pthread_setcanceltype (int __type, int *__oldtype);
|
||
|
||
/* Value returned by pthread_join if the target thread was
|
||
canceled. */
|
||
#define PTHREAD_CANCELED ((void *) -1)
|
||
|
||
/* Cancel THEAD. */
|
||
extern int pthread_cancel (pthread_t __thr);
|
||
|
||
/* Add an explicit cancelation point. */
|
||
extern void pthread_testcancel (void);
|
||
|
||
|
||
/* Barriers attributes. */
|
||
|
||
#ifdef __USE_XOPEN2K
|
||
|
||
# include <bits/types/struct___pthread_barrierattr.h>
|
||
|
||
/* Initialize barrier attribute object in *ATTR to the default
|
||
values. */
|
||
extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Destroy the barrier attribute object in *ATTR. */
|
||
extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Return the value of the process shared attribute in *ATTR in
|
||
*PSHARED. */
|
||
extern int pthread_barrierattr_getpshared (const pthread_barrierattr_t *__restrict __attr,
|
||
int *__restrict __pshared)
|
||
__THROW __nonnull ((1, 2));
|
||
|
||
/* Set the value of the process shared attribute in *ATTR to
|
||
PSHARED. */
|
||
extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
|
||
int __pshared)
|
||
__THROW __nonnull ((1));
|
||
|
||
|
||
/* Barriers. */
|
||
|
||
# include <bits/types/struct___pthread_barrier.h>
|
||
|
||
/* Returned by pthread_barrier_wait to exactly one thread each time a
|
||
barrier is passed. */
|
||
# define PTHREAD_BARRIER_SERIAL_THREAD -1
|
||
|
||
/* Initialize barrier BARRIER. */
|
||
extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier,
|
||
const pthread_barrierattr_t *__restrict __attr,
|
||
unsigned __count)
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Destroy 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));
|
||
|
||
#endif /* __USE_XOPEN2K */
|
||
|
||
|
||
|
||
/* Thread specific data. */
|
||
|
||
#include <bits/types/__pthread_key.h>
|
||
|
||
/* Create a thread specific data key in KEY visible to all threads.
|
||
On thread destruction, DESTRUCTOR shall be called with the thread
|
||
specific data associate with KEY if it is not NULL. */
|
||
extern int pthread_key_create (pthread_key_t *__key,
|
||
void (*__destructor) (void *))
|
||
__THROW __nonnull ((1));
|
||
|
||
/* Delete the thread specific data key KEY. The associated destructor
|
||
function is not called. */
|
||
extern int pthread_key_delete (pthread_key_t __key) __THROW;
|
||
|
||
/* Return the caller thread's thread specific value of KEY. */
|
||
extern void *pthread_getspecific (pthread_key_t __key) __THROW;
|
||
|
||
/* Set the caller thread's thread specific value of KEY to VALUE. */
|
||
extern int pthread_setspecific (pthread_key_t __key, const void *__value)
|
||
__THROW __attr_access_none (2);
|
||
|
||
|
||
/* Dynamic package initialization. */
|
||
|
||
#include <bits/types/struct___pthread_once.h>
|
||
|
||
#define PTHREAD_ONCE_INIT (struct __pthread_once) { __PTHREAD_ONCE_INIT }
|
||
|
||
/* Call INIT_ROUTINE if this function has never been called with
|
||
*ONCE_CONTROL, otherwise do nothing. */
|
||
extern int pthread_once (pthread_once_t *__once_control,
|
||
void (*__init_routine) (void)) __nonnull ((1, 2));
|
||
|
||
|
||
/* Concurrency. */
|
||
|
||
#ifdef __USE_UNIX98
|
||
/* Set the desired concurrency level to NEW_LEVEL. */
|
||
extern int pthread_setconcurrency (int __new_level) __THROW;
|
||
|
||
/* Get the current concurrency level. */
|
||
extern int pthread_getconcurrency (void) __THROW;
|
||
#endif
|
||
|
||
|
||
/* Forking. */
|
||
|
||
/* Register the function PREPARE to be run before the process forks,
|
||
the function PARENT to be run after a fork in the parent and the
|
||
function CHILD to be run in the child after the fork. If no
|
||
handling is desired then any of PREPARE, PARENT and CHILD may be
|
||
NULL. The prepare handles will be called in the reverse order
|
||
which they were registered and the parent and child handlers in the
|
||
order in which they were registered. */
|
||
extern int pthread_atfork (void (*__prepare) (void), void (*__parent) (void),
|
||
void (*__child) (void)) __THROW;
|
||
|
||
|
||
/* Signals (should be in <signal.h>). */
|
||
|
||
/* Send signal SIGNO to thread THREAD. */
|
||
extern int pthread_kill (pthread_t __thr, int __signo) __THROW;
|
||
|
||
|
||
/* Time. */
|
||
|
||
#ifdef __USE_XOPEN2K
|
||
/* Return the thread cpu clock. */
|
||
extern int pthread_getcpuclockid (pthread_t __thr, __clockid_t *__clock)
|
||
__THROW __nonnull ((2));
|
||
#endif
|
||
|
||
|
||
/* Scheduling. */
|
||
|
||
/* Return thread THREAD's scheduling parameters. */
|
||
extern int pthread_getschedparam (pthread_t __thr, int *__restrict __policy,
|
||
struct sched_param *__restrict __param)
|
||
__THROW __nonnull ((2, 3));
|
||
|
||
/* Set thread THREAD's scheduling parameters. */
|
||
extern int pthread_setschedparam (pthread_t __thr, int __policy,
|
||
const struct sched_param *__param)
|
||
__THROW __nonnull ((3));
|
||
|
||
/* Set thread THREAD's scheduling priority. */
|
||
extern int pthread_setschedprio (pthread_t __thr, int __prio) __THROW;
|
||
|
||
#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;
|
||
#endif
|
||
|
||
|
||
/* Kernel-specific interfaces. */
|
||
|
||
#include <bits/pthread-np.h>
|
||
|
||
|
||
__END_DECLS
|
||
|
||
#endif /* pthread.h */
|