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922 lines
30 KiB
C
922 lines
30 KiB
C
/* Posix threads. Hurd version.
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Copyright (C) 2000-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/*
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* POSIX Threads Extension: ??? <pthread.h>
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*/
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#ifndef _PTHREAD_H
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#define _PTHREAD_H 1
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#include <features.h>
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#include <sys/cdefs.h>
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#ifndef __extern_inline
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/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
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inline semantics, unless -fgnu89-inline is used. */
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# if !defined __cplusplus || __GNUC_PREREQ (4,3)
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# if defined __GNUC_STDC_INLINE__ || defined __cplusplus
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# define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
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# if __GNUC_PREREQ (4,3)
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# define __extern_always_inline \
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extern __always_inline __attribute__ ((__gnu_inline__, __artificial__))
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# else
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# define __extern_always_inline \
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extern __always_inline __attribute__ ((__gnu_inline__))
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# endif
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# else
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# define __extern_inline extern __inline
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# define __extern_always_inline extern __always_inline
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# endif
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# endif
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#endif
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#include <sched.h>
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#include <time.h>
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__BEGIN_DECLS
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#include <bits/pthreadtypes.h>
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#include <bits/pthread.h>
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/* Possible values for the process shared attribute. */
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#define PTHREAD_PROCESS_PRIVATE __PTHREAD_PROCESS_PRIVATE
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#define PTHREAD_PROCESS_SHARED __PTHREAD_PROCESS_SHARED
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/* Thread attributes. */
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/* Possible values for the inheritsched attribute. */
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#define PTHREAD_EXPLICIT_SCHED __PTHREAD_EXPLICIT_SCHED
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#define PTHREAD_INHERIT_SCHED __PTHREAD_INHERIT_SCHED
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/* Possible values for the `contentionscope' attribute. */
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#define PTHREAD_SCOPE_SYSTEM __PTHREAD_SCOPE_SYSTEM
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#define PTHREAD_SCOPE_PROCESS __PTHREAD_SCOPE_PROCESS
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/* Possible values for the `detachstate' attribute. */
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#define PTHREAD_CREATE_JOINABLE __PTHREAD_CREATE_JOINABLE
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#define PTHREAD_CREATE_DETACHED __PTHREAD_CREATE_DETACHED
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#include <bits/types/struct___pthread_attr.h>
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/* Initialize the thread attribute object in *ATTR to the default
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values. */
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extern int pthread_attr_init (pthread_attr_t *__attr) __THROW __nonnull ((1));
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/* Destroy the thread attribute object in *ATTR. */
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extern int pthread_attr_destroy (pthread_attr_t *__attr)
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__THROW __nonnull ((1));
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/* Return the value of the inheritsched attribute in *ATTR in
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*INHERITSCHED. */
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extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict __attr,
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int *__restrict __inheritsched)
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__THROW __nonnull ((1, 2));
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/* Set the value of the inheritsched attribute in *ATTR to
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INHERITSCHED. */
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extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
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int __inheritsched)
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__THROW __nonnull ((1));
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/* Return the value of the schedparam attribute in *ATTR in *PARAM. */
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extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr,
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struct sched_param *__restrict __param)
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__THROW __nonnull ((1, 2));
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/* Set the value of the schedparam attribute in *ATTR to PARAM. */
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extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr,
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const struct sched_param *__restrict
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__param) __THROW __nonnull ((1, 2));
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/* Return the value of the schedpolicy attribute in *ATTR to *POLICY. */
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extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict __attr,
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int *__restrict __policy)
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__THROW __nonnull ((1, 2));
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/* Set the value of the schedpolicy attribute in *ATTR to POLICY. */
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extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr,
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int __policy)
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__THROW __nonnull ((1));
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/* Return the value of the contentionscope attribute in *ATTR in
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*CONTENTIONSCOPE. */
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extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr,
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int *__restrict __contentionscope)
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__THROW __nonnull ((1, 2));
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/* Set the value of the contentionscope attribute in *ATTR to
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CONTENTIONSCOPE. */
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extern int pthread_attr_setscope (pthread_attr_t *__attr,
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int __contentionscope)
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__THROW __nonnull ((1));
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/* Return the value of the stackaddr attribute in *ATTR in
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*STACKADDR. */
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extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict __attr,
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void **__restrict __stackaddr)
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__THROW __nonnull ((1, 2));
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/* Set the value of the stackaddr attribute in *ATTR to STACKADDR. */
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extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
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void *__stackaddr)
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__THROW __nonnull ((1));
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#ifdef __USE_XOPEN2K
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/* Return the value of the stackaddr and stacksize attributes in *ATTR
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in *STACKADDR and *STACKSIZE respectively. */
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extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
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void **__restrict __stackaddr,
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size_t *__restrict __stacksize)
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__THROW __nonnull ((1, 2, 3));
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/* Set the value of the stackaddr and stacksize attributes in *ATTR to
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STACKADDR and STACKSIZE respectively. */
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extern int pthread_attr_setstack (pthread_attr_t *__attr,
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void *__stackaddr,
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size_t __stacksize)
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__THROW __nonnull ((1));
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#endif
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/* Return the value of the detachstate attribute in *ATTR in
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*DETACHSTATE. */
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extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr,
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int *__detachstate)
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__THROW __nonnull ((1, 2));
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/* Set the value of the detachstate attribute in *ATTR to
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DETACHSTATE. */
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extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
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int __detachstate)
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__THROW __nonnull ((1));
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/* Return the value of the guardsize attribute in *ATTR in
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*GUARDSIZE. */
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extern int pthread_attr_getguardsize (const pthread_attr_t *__restrict __attr,
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size_t *__restrict __guardsize)
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__THROW __nonnull ((1, 2));
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/* Set the value of the guardsize attribute in *ATTR to GUARDSIZE. */
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extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
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size_t __guardsize)
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__THROW __nonnull ((1));
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/* Return the value of the stacksize attribute in *ATTR in
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*STACKSIZE. */
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extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict __attr,
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size_t *__restrict __stacksize)
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__THROW __nonnull ((1, 2));
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/* Set the value of the stacksize attribute in *ATTR to STACKSIZE. */
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extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
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size_t __stacksize)
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__THROW __nonnull ((1));
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#ifdef __USE_GNU
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/* Initialize thread attribute *ATTR with attributes corresponding to the
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already running thread THREAD. It shall be called on an uninitialized ATTR
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and destroyed with pthread_attr_destroy when no longer needed. */
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extern int pthread_getattr_np (pthread_t __thr, pthread_attr_t *__attr)
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__THROW __nonnull ((2));
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#endif
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/* Create a thread with attributes given by ATTR, executing
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START_ROUTINE with argument ARG. */
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extern int pthread_create (pthread_t *__restrict __threadp,
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__const pthread_attr_t *__restrict __attr,
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void *(*__start_routine)(void *),
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void *__restrict __arg) __THROWNL __nonnull ((1, 3));
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/* Terminate the current thread and make STATUS available to any
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thread that might join us. */
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extern void pthread_exit (void *__status) __attribute__ ((__noreturn__));
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/* Make calling thread wait for termination of thread THREAD. Return
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the exit status of the thread in *STATUS. */
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extern int pthread_join (pthread_t __threadp, void **__status);
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#ifdef __USE_GNU
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/* Check whether thread TH has terminated. If yes return the status of
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the thread in *THREAD_RETURN, if THREAD_RETURN is not NULL. */
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extern int pthread_tryjoin_np (pthread_t __th, void **__thread_return) __THROW;
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/* Make calling thread wait for termination of the thread TH, but only
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until TIMEOUT. The exit status of the thread is stored in
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*THREAD_RETURN, if THREAD_RETURN is not NULL.
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This function is a cancellation point and therefore not marked with
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__THROW. */
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extern int pthread_timedjoin_np (pthread_t __th, void **__thread_return,
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const struct timespec *__abstime);
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/* Make calling thread wait for termination of the thread TH, but only
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until TIMEOUT measured against the clock specified by CLOCKID. The
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exit status of the thread is stored in *THREAD_RETURN, if
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THREAD_RETURN is not NULL.
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This function is a cancellation point and therefore not marked with
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__THROW. */
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extern int pthread_clockjoin_np (pthread_t __th, void **__thread_return,
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clockid_t __clockid,
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const struct timespec *__abstime);
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#endif
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/* Indicate that the storage for THREAD can be reclaimed when it
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terminates. */
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extern int pthread_detach (pthread_t __threadp);
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/* Compare thread IDs T1 and T2. Return nonzero if they are equal, 0
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if they are not. */
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extern int pthread_equal (pthread_t __t1, pthread_t __t2);
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#ifdef __USE_EXTERN_INLINES
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__extern_inline int
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pthread_equal (pthread_t __t1, pthread_t __t2)
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{
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return __pthread_equal (__t1, __t2);
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}
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#endif /* Use extern inlines. */
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/* Return the thread ID of the calling thread. */
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extern pthread_t pthread_self (void) __THROW;
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/* Mutex attributes. */
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#define PTHREAD_PRIO_NONE_NP __PTHREAD_PRIO_NONE
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#define PTHREAD_PRIO_INHERIT_NP __PTHREAD_PRIO_INHERIT
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#define PTHREAD_PRIO_PROTECT_NP __PTHREAD_PRIO_PROTECT
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#ifdef __USE_UNIX98
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# define PTHREAD_PRIO_NONE PTHREAD_PRIO_NONE_NP
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# define PTHREAD_PRIO_INHERIT PTHREAD_PRIO_INHERIT_NP
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# define PTHREAD_PRIO_PROTECT PTHREAD_PRIO_PROTECT_NP
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#endif
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#define PTHREAD_MUTEX_TIMED_NP __PTHREAD_MUTEX_TIMED
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#define PTHREAD_MUTEX_ERRORCHECK_NP __PTHREAD_MUTEX_ERRORCHECK
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#define PTHREAD_MUTEX_RECURSIVE_NP __PTHREAD_MUTEX_RECURSIVE
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#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
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# define PTHREAD_MUTEX_NORMAL PTHREAD_MUTEX_TIMED_NP
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# define PTHREAD_MUTEX_ERRORCHECK PTHREAD_MUTEX_ERRORCHECK_NP
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# define PTHREAD_MUTEX_RECURSIVE PTHREAD_MUTEX_RECURSIVE_NP
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# define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
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#endif
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#ifdef __USE_GNU
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/* For compatibility. */
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# define PTHREAD_MUTEX_FAST_NP PTHREAD_MUTEX_TIMED_NP
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#endif
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#ifdef __USE_XOPEN2K
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# define PTHREAD_MUTEX_STALLED __PTHREAD_MUTEX_STALLED
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# define PTHREAD_MUTEX_ROBUST __PTHREAD_MUTEX_ROBUST
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# define PTHREAD_MUTEX_ROBUST_NP __PTHREAD_MUTEX_ROBUST
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#endif
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#include <bits/types/struct___pthread_mutexattr.h>
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/* Initialize the mutex attribute object in *ATTR to the default
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values. */
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extern int pthread_mutexattr_init(pthread_mutexattr_t *__attr)
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__THROW __nonnull ((1));
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/* Destroy the mutex attribute structure in *ATTR. */
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extern int pthread_mutexattr_destroy(pthread_mutexattr_t *__attr)
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__THROW __nonnull ((1));
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#ifdef __USE_UNIX98
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/* Return the value of the prioceiling attribute in *ATTR in
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*PRIOCEILING. */
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extern int pthread_mutexattr_getprioceiling(const pthread_mutexattr_t *__restrict __attr,
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int *__restrict __prioceiling)
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__THROW __nonnull ((1, 2));
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/* Set the value of the prioceiling attribute in *ATTR to
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PRIOCEILING. */
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extern int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *__attr,
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int __prioceiling)
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__THROW __nonnull ((1));
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/* Return the value of the protocol attribute in *ATTR in
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*PROTOCOL. */
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extern int pthread_mutexattr_getprotocol(const pthread_mutexattr_t *__restrict __attr,
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int *__restrict __protocol)
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__THROW __nonnull ((1, 2));
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/* Set the value of the protocol attribute in *ATTR to PROTOCOL. */
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extern int pthread_mutexattr_setprotocol(pthread_mutexattr_t *__attr,
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int __protocol)
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__THROW __nonnull ((1));
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#endif
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#ifdef __USE_XOPEN2K
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/* Get the robustness flag of the mutex attribute ATTR. */
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extern int pthread_mutexattr_getrobust (const pthread_mutexattr_t *__attr,
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int *__robustness)
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__THROW __nonnull ((1, 2));
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# ifdef __USE_GNU
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extern int pthread_mutexattr_getrobust_np (const pthread_mutexattr_t *__attr,
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int *__robustness)
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__THROW __nonnull ((1, 2));
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# endif
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/* Set the robustness flag of the mutex attribute ATTR. */
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extern int pthread_mutexattr_setrobust (pthread_mutexattr_t *__attr,
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int __robustness)
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__THROW __nonnull ((1));
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# ifdef __USE_GNU
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extern int pthread_mutexattr_setrobust_np (pthread_mutexattr_t *__attr,
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int __robustness)
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__THROW __nonnull ((1));
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# endif
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#endif
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/* Return the value of the process shared attribute in *ATTR in
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*PSHARED. */
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extern int pthread_mutexattr_getpshared(const pthread_mutexattr_t *__restrict __attr,
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int *__restrict __pshared)
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__THROW __nonnull ((1, 2));
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/* Set the value of the process shared attribute in *ATTR to
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PSHARED. */
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extern int pthread_mutexattr_setpshared(pthread_mutexattr_t *__attr,
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int __pshared)
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__THROW __nonnull ((1));
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#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
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/* Return the value of the type attribute in *ATTR in *TYPE. */
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extern int pthread_mutexattr_gettype(const pthread_mutexattr_t *__restrict __attr,
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int *__restrict __type)
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__THROW __nonnull ((1, 2));
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||
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||
/* Set the value of the type attribute in *ATTR to TYPE. */
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||
extern int pthread_mutexattr_settype(pthread_mutexattr_t *__attr,
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int __type)
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__THROW __nonnull ((1));
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||
#endif
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||
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||
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/* Mutexes. */
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||
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||
#include <bits/types/struct___pthread_mutex.h>
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||
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#define PTHREAD_MUTEX_INITIALIZER __PTHREAD_MUTEX_INITIALIZER
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||
/* Static initializer for recursive mutexes. */
|
||
|
||
#ifdef __USE_GNU
|
||
# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
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||
__PTHREAD_ERRORCHECK_MUTEX_INITIALIZER
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||
# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
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||
__PTHREAD_RECURSIVE_MUTEX_INITIALIZER
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||
#endif
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||
|
||
/* Create a mutex with attributes given by ATTR and store it in
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||
*__MUTEX. */
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||
extern int pthread_mutex_init (struct __pthread_mutex *__restrict __mutex,
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||
const pthread_mutexattr_t *__restrict __attr)
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||
__THROW __nonnull ((1));
|
||
|
||
/* Destroy the mutex __MUTEX. */
|
||
extern int pthread_mutex_destroy (struct __pthread_mutex *__mutex)
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||
__THROW __nonnull ((1));
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||
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||
/* Wait until lock for MUTEX becomes available and lock it. */
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||
extern int pthread_mutex_lock (pthread_mutex_t *__mutex);
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||
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||
/* Try to lock MUTEX. */
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||
extern int pthread_mutex_trylock (pthread_mutex_t *__mutex)
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||
__THROWNL __nonnull ((1));
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||
|
||
#ifdef __USE_XOPEN2K
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||
/* Try to lock MUTEX, block until *ABSTIME if it is already held. */
|
||
extern int pthread_mutex_timedlock (struct __pthread_mutex *__restrict __mutex,
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||
const struct timespec *__restrict __abstime)
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||
__THROWNL __nonnull ((1, 2));
|
||
#endif
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||
|
||
#ifdef __USE_GNU
|
||
extern int pthread_mutex_clocklock (pthread_mutex_t *__restrict __mutex,
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||
clockid_t __clockid,
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||
const struct timespec *__restrict
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||
__abstime) __THROWNL __nonnull ((1, 3));
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||
#endif
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||
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||
/* Unlock MUTEX. */
|
||
extern int pthread_mutex_unlock (pthread_mutex_t *__mutex)
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||
__THROWNL __nonnull ((1));
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||
|
||
/* 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
|
||
/* 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)) __attr_access ((__write_only__, 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)) __attr_access ((__read_only__, 2));
|
||
#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;
|
||
#endif
|
||
|
||
|
||
/* Kernel-specific interfaces. */
|
||
|
||
#include <bits/pthread-np.h>
|
||
|
||
|
||
__END_DECLS
|
||
|
||
#endif /* pthread.h */
|