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jeremybenn |
/* Linuxthreads - a simple clone()-based implementation of Posix */
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/* threads for Linux. */
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/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
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/* */
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/* This program is free software; you can redistribute it and/or */
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/* modify it under the terms of the GNU Library General Public License */
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/* as published by the Free Software Foundation; either version 2 */
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/* of the License, or (at your option) any later version. */
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/* */
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/* This program 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 */
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/* GNU Library General Public License for more details. */
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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 <sched.h>
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#include <time.h>
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#define __need_sigset_t
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#include <signal.h>
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#include <bits/pthreadtypes.h>
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#include <bits/initspin.h>
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__BEGIN_DECLS
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/* Initializers. */
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#define PTHREAD_MUTEX_INITIALIZER \
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{0, 0, 0, PTHREAD_MUTEX_TIMED_NP, __LOCK_INITIALIZER}
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#ifdef __USE_GNU
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# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
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{0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __LOCK_INITIALIZER}
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# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
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{0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __LOCK_INITIALIZER}
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# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
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{0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __LOCK_INITIALIZER}
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#endif
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#define PTHREAD_COND_INITIALIZER {__LOCK_INITIALIZER, 0}
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#ifdef __USE_UNIX98
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# define PTHREAD_RWLOCK_INITIALIZER \
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{ __LOCK_INITIALIZER, 0, NULL, NULL, NULL, \
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PTHREAD_RWLOCK_DEFAULT_NP, PTHREAD_PROCESS_PRIVATE }
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#endif
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#ifdef __USE_GNU
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# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
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{ __LOCK_INITIALIZER, 0, NULL, NULL, NULL, \
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PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, PTHREAD_PROCESS_PRIVATE }
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#endif
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/* Values for attributes. */
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enum
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{
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PTHREAD_CREATE_JOINABLE,
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#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE
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PTHREAD_CREATE_DETACHED
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#define PTHREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED
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};
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enum
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{
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PTHREAD_INHERIT_SCHED,
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#define PTHREAD_INHERIT_SCHED PTHREAD_INHERIT_SCHED
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PTHREAD_EXPLICIT_SCHED
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#define PTHREAD_EXPLICIT_SCHED PTHREAD_EXPLICIT_SCHED
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};
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enum
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{
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PTHREAD_SCOPE_SYSTEM,
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#define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_SYSTEM
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PTHREAD_SCOPE_PROCESS
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#define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_PROCESS
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};
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enum
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{
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PTHREAD_MUTEX_TIMED_NP,
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PTHREAD_MUTEX_RECURSIVE_NP,
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PTHREAD_MUTEX_ERRORCHECK_NP,
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PTHREAD_MUTEX_ADAPTIVE_NP
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#ifdef __USE_UNIX98
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,
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PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP,
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PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP,
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PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP,
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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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, PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_ADAPTIVE_NP
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#endif
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};
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enum
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{
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PTHREAD_PROCESS_PRIVATE,
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#define PTHREAD_PROCESS_PRIVATE PTHREAD_PROCESS_PRIVATE
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PTHREAD_PROCESS_SHARED
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#define PTHREAD_PROCESS_SHARED PTHREAD_PROCESS_SHARED
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};
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#ifdef __USE_UNIX98
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enum
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{
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PTHREAD_RWLOCK_PREFER_READER_NP,
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PTHREAD_RWLOCK_PREFER_WRITER_NP,
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PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
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PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_WRITER_NP
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};
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#endif /* Unix98 */
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#define PTHREAD_ONCE_INIT 0
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/* Special constants */
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#ifdef __USE_XOPEN2K
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/* -1 is distinct from 0 and all errno constants */
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# define PTHREAD_BARRIER_SERIAL_THREAD -1
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#endif
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/* Cleanup buffers */
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struct _pthread_cleanup_buffer
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{
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void (*__routine) (void *); /* Function to call. */
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void *__arg; /* Its argument. */
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int __canceltype; /* Saved cancellation type. */
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struct _pthread_cleanup_buffer *__prev; /* Chaining of cleanup functions. */
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};
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/* Cancellation */
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enum
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{
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PTHREAD_CANCEL_ENABLE,
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#define PTHREAD_CANCEL_ENABLE PTHREAD_CANCEL_ENABLE
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PTHREAD_CANCEL_DISABLE
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#define PTHREAD_CANCEL_DISABLE PTHREAD_CANCEL_DISABLE
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};
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enum
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{
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PTHREAD_CANCEL_DEFERRED,
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#define PTHREAD_CANCEL_DEFERRED PTHREAD_CANCEL_DEFERRED
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PTHREAD_CANCEL_ASYNCHRONOUS
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#define PTHREAD_CANCEL_ASYNCHRONOUS PTHREAD_CANCEL_ASYNCHRONOUS
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};
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#define PTHREAD_CANCELED ((void *) -1)
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/* Function for handling threads. */
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/* Create a thread with given attributes ATTR (or default attributes
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if ATTR is NULL), and call function START_ROUTINE with given
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arguments ARG. */
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extern int pthread_create (pthread_t *__restrict __thread1,
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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) __THROW;
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/* Obtain the identifier of the current thread. */
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extern pthread_t pthread_self (void) __THROW;
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/* Compare two thread identifiers. */
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extern int pthread_equal (pthread_t __thread1, pthread_t __thread2) __THROW;
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/* Terminate calling thread. */
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extern void pthread_exit (void *__retval)
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__THROW __attribute__ ((__noreturn__));
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/* Make calling thread wait for termination of the thread TH. The
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exit status of the thread is stored in *THREAD_RETURN, if THREAD_RETURN
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is not NULL. */
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extern int pthread_join (pthread_t __th, void **__thread_return) __THROW;
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/* Indicate that the thread TH is never to be joined with PTHREAD_JOIN.
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The resources of TH will therefore be freed immediately when it
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terminates, instead of waiting for another thread to perform PTHREAD_JOIN
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on it. */
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extern int pthread_detach (pthread_t __th) __THROW;
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/* Functions for handling attributes. */
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/* Initialize thread attribute *ATTR with default attributes
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(detachstate is PTHREAD_JOINABLE, scheduling policy is SCHED_OTHER,
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no user-provided stack). */
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extern int pthread_attr_init (pthread_attr_t *__attr) __THROW;
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/* Destroy thread attribute *ATTR. */
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extern int pthread_attr_destroy (pthread_attr_t *__attr) __THROW;
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/* Set the `detachstate' attribute in *ATTR according to DETACHSTATE. */
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extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
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int __detachstate) __THROW;
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/* Return in *DETACHSTATE the `detachstate' attribute in *ATTR. */
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extern int pthread_attr_getdetachstate (__const pthread_attr_t *__attr,
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int *__detachstate) __THROW;
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/* Set scheduling parameters (priority, etc) in *ATTR according 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;
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/* Return in *PARAM the scheduling parameters of *ATTR. */
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extern int pthread_attr_getschedparam (__const pthread_attr_t *__restrict
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__attr,
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struct sched_param *__restrict __param)
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__THROW;
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/* Set scheduling policy in *ATTR according to POLICY. */
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extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy)
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__THROW;
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/* Return in *POLICY the scheduling policy of *ATTR. */
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extern int pthread_attr_getschedpolicy (__const pthread_attr_t *__restrict
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__attr, int *__restrict __policy)
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__THROW;
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/* Set scheduling inheritance mode in *ATTR according to INHERIT. */
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extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
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int __inherit) __THROW;
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/* Return in *INHERIT the scheduling inheritance mode of *ATTR. */
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extern int pthread_attr_getinheritsched (__const pthread_attr_t *__restrict
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__attr, int *__restrict __inherit)
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__THROW;
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/* Set scheduling contention scope in *ATTR according to SCOPE. */
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extern int pthread_attr_setscope (pthread_attr_t *__attr, int __scope)
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__THROW;
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/* Return in *SCOPE the scheduling contention scope of *ATTR. */
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extern int pthread_attr_getscope (__const pthread_attr_t *__restrict __attr,
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int *__restrict __scope) __THROW;
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#ifdef __USE_UNIX98
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/* Set the size of the guard area at the bottom of the thread. */
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extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
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size_t __guardsize) __THROW;
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/* Get the size of the guard area at the bottom of the thread. */
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extern int pthread_attr_getguardsize (__const pthread_attr_t *__restrict
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__attr, size_t *__restrict __guardsize)
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__THROW;
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#endif
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/* Set the starting address of the stack of the thread to be created.
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Depending on whether the stack grows up or down the value must either
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be higher or lower than all the address in the memory block. The
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minimal size of the block must be PTHREAD_STACK_SIZE. */
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extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
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void *__stackaddr) __THROW;
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/* Return the previously set address for the stack. */
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extern int pthread_attr_getstackaddr (__const pthread_attr_t *__restrict
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__attr, void **__restrict __stackaddr)
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__THROW;
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#ifdef __USE_XOPEN2K
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/* The following two interfaces are intended to replace the last two. They
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require setting the address as well as the size since only setting the
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address will make the implementation on some architectures impossible. */
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extern int pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
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size_t __stacksize) __THROW;
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/* Return the previously set address for the stack. */
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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) __THROW;
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#endif
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/* Add information about the minimum stack size needed for the thread
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to be started. This size must never be less than PTHREAD_STACK_SIZE
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and must also not exceed the system limits. */
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extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
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size_t __stacksize) __THROW;
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/* Return the currently used minimal stack size. */
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extern int pthread_attr_getstacksize (__const pthread_attr_t *__restrict
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__attr, size_t *__restrict __stacksize)
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__THROW;
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#ifdef __USE_GNU
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/* Get thread attributes corresponding to the already running thread TH. */
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extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr) __THROW;
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#endif
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296 |
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/* Functions for scheduling control. */
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298 |
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/* Set the scheduling parameters for TARGET_THREAD according to POLICY
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and *PARAM. */
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extern int pthread_setschedparam (pthread_t __target_thread, int __policy,
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__const struct sched_param *__param)
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__THROW;
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304 |
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305 |
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/* Return in *POLICY and *PARAM the scheduling parameters for TARGET_THREAD. */
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306 |
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extern int pthread_getschedparam (pthread_t __target_thread,
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int *__restrict __policy,
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struct sched_param *__restrict __param)
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__THROW;
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311 |
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#ifdef __USE_UNIX98
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/* Determine level of concurrency. */
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313 |
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extern int pthread_getconcurrency (void) __THROW;
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314 |
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315 |
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/* Set new concurrency level to LEVEL. */
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extern int pthread_setconcurrency (int __level) __THROW;
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#endif
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318 |
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319 |
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#ifdef __USE_GNU
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/* Yield the processor to another thread or process.
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321 |
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This function is similar to the POSIX `sched_yield' function but
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might be differently implemented in the case of a m-on-n thread
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implementation. */
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extern int pthread_yield (void) __THROW;
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#endif
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326 |
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327 |
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/* Functions for mutex handling. */
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328 |
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329 |
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/* Initialize MUTEX using attributes in *MUTEX_ATTR, or use the
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330 |
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default values if later is NULL. */
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331 |
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extern int pthread_mutex_init (pthread_mutex_t *__restrict __mutex,
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332 |
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__const pthread_mutexattr_t *__restrict
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333 |
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__mutex_attr) __THROW;
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334 |
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335 |
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/* Destroy MUTEX. */
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336 |
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extern int pthread_mutex_destroy (pthread_mutex_t *__mutex) __THROW;
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337 |
|
|
|
338 |
|
|
/* Try to lock MUTEX. */
|
339 |
|
|
extern int pthread_mutex_trylock (pthread_mutex_t *__mutex) __THROW;
|
340 |
|
|
|
341 |
|
|
/* Wait until lock for MUTEX becomes available and lock it. */
|
342 |
|
|
extern int pthread_mutex_lock (pthread_mutex_t *__mutex) __THROW;
|
343 |
|
|
|
344 |
|
|
#ifdef __USE_XOPEN2K
|
345 |
|
|
/* Wait until lock becomes available, or specified time passes. */
|
346 |
|
|
extern int pthread_mutex_timedlock (pthread_mutex_t *__restrict __mutex,
|
347 |
|
|
__const struct timespec *__restrict
|
348 |
|
|
__abstime) __THROW;
|
349 |
|
|
#endif
|
350 |
|
|
|
351 |
|
|
/* Unlock MUTEX. */
|
352 |
|
|
extern int pthread_mutex_unlock (pthread_mutex_t *__mutex) __THROW;
|
353 |
|
|
|
354 |
|
|
|
355 |
|
|
/* Functions for handling mutex attributes. */
|
356 |
|
|
|
357 |
|
|
/* Initialize mutex attribute object ATTR with default attributes
|
358 |
|
|
(kind is PTHREAD_MUTEX_TIMED_NP). */
|
359 |
|
|
extern int pthread_mutexattr_init (pthread_mutexattr_t *__attr) __THROW;
|
360 |
|
|
|
361 |
|
|
/* Destroy mutex attribute object ATTR. */
|
362 |
|
|
extern int pthread_mutexattr_destroy (pthread_mutexattr_t *__attr) __THROW;
|
363 |
|
|
|
364 |
|
|
/* Get the process-shared flag of the mutex attribute ATTR. */
|
365 |
|
|
extern int pthread_mutexattr_getpshared (__const pthread_mutexattr_t *
|
366 |
|
|
__restrict __attr,
|
367 |
|
|
int *__restrict __pshared) __THROW;
|
368 |
|
|
|
369 |
|
|
/* Set the process-shared flag of the mutex attribute ATTR. */
|
370 |
|
|
extern int pthread_mutexattr_setpshared (pthread_mutexattr_t *__attr,
|
371 |
|
|
int __pshared) __THROW;
|
372 |
|
|
|
373 |
|
|
#ifdef __USE_UNIX98
|
374 |
|
|
/* Set the mutex kind attribute in *ATTR to KIND (either PTHREAD_MUTEX_NORMAL,
|
375 |
|
|
PTHREAD_MUTEX_RECURSIVE, PTHREAD_MUTEX_ERRORCHECK, or
|
376 |
|
|
PTHREAD_MUTEX_DEFAULT). */
|
377 |
|
|
extern int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind)
|
378 |
|
|
__THROW;
|
379 |
|
|
|
380 |
|
|
/* Return in *KIND the mutex kind attribute in *ATTR. */
|
381 |
|
|
extern int pthread_mutexattr_gettype (__const pthread_mutexattr_t *__restrict
|
382 |
|
|
__attr, int *__restrict __kind) __THROW;
|
383 |
|
|
#endif
|
384 |
|
|
|
385 |
|
|
|
386 |
|
|
/* Functions for handling conditional variables. */
|
387 |
|
|
|
388 |
|
|
/* Initialize condition variable COND using attributes ATTR, or use
|
389 |
|
|
the default values if later is NULL. */
|
390 |
|
|
extern int pthread_cond_init (pthread_cond_t *__restrict __cond,
|
391 |
|
|
__const pthread_condattr_t *__restrict
|
392 |
|
|
__cond_attr) __THROW;
|
393 |
|
|
|
394 |
|
|
/* Destroy condition variable COND. */
|
395 |
|
|
extern int pthread_cond_destroy (pthread_cond_t *__cond) __THROW;
|
396 |
|
|
|
397 |
|
|
/* Wake up one thread waiting for condition variable COND. */
|
398 |
|
|
extern int pthread_cond_signal (pthread_cond_t *__cond) __THROW;
|
399 |
|
|
|
400 |
|
|
/* Wake up all threads waiting for condition variables COND. */
|
401 |
|
|
extern int pthread_cond_broadcast (pthread_cond_t *__cond) __THROW;
|
402 |
|
|
|
403 |
|
|
/* Wait for condition variable COND to be signaled or broadcast.
|
404 |
|
|
MUTEX is assumed to be locked before. */
|
405 |
|
|
extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
|
406 |
|
|
pthread_mutex_t *__restrict __mutex) __THROW;
|
407 |
|
|
|
408 |
|
|
/* Wait for condition variable COND to be signaled or broadcast until
|
409 |
|
|
ABSTIME. MUTEX is assumed to be locked before. ABSTIME is an
|
410 |
|
|
absolute time specification; zero is the beginning of the epoch
|
411 |
|
|
(00:00:00 GMT, January 1, 1970). */
|
412 |
|
|
extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
|
413 |
|
|
pthread_mutex_t *__restrict __mutex,
|
414 |
|
|
__const struct timespec *__restrict
|
415 |
|
|
__abstime) __THROW;
|
416 |
|
|
|
417 |
|
|
/* Functions for handling condition variable attributes. */
|
418 |
|
|
|
419 |
|
|
/* Initialize condition variable attribute ATTR. */
|
420 |
|
|
extern int pthread_condattr_init (pthread_condattr_t *__attr) __THROW;
|
421 |
|
|
|
422 |
|
|
/* Destroy condition variable attribute ATTR. */
|
423 |
|
|
extern int pthread_condattr_destroy (pthread_condattr_t *__attr) __THROW;
|
424 |
|
|
|
425 |
|
|
/* Get the process-shared flag of the condition variable attribute ATTR. */
|
426 |
|
|
extern int pthread_condattr_getpshared (__const pthread_condattr_t *
|
427 |
|
|
__restrict __attr,
|
428 |
|
|
int *__restrict __pshared) __THROW;
|
429 |
|
|
|
430 |
|
|
/* Set the process-shared flag of the condition variable attribute ATTR. */
|
431 |
|
|
extern int pthread_condattr_setpshared (pthread_condattr_t *__attr,
|
432 |
|
|
int __pshared) __THROW;
|
433 |
|
|
|
434 |
|
|
|
435 |
|
|
#ifdef __USE_UNIX98
|
436 |
|
|
/* Functions for handling read-write locks. */
|
437 |
|
|
|
438 |
|
|
/* Initialize read-write lock RWLOCK using attributes ATTR, or use
|
439 |
|
|
the default values if later is NULL. */
|
440 |
|
|
extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
|
441 |
|
|
__const pthread_rwlockattr_t *__restrict
|
442 |
|
|
__attr) __THROW;
|
443 |
|
|
|
444 |
|
|
/* Destroy read-write lock RWLOCK. */
|
445 |
|
|
extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock) __THROW;
|
446 |
|
|
|
447 |
|
|
/* Acquire read lock for RWLOCK. */
|
448 |
|
|
extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock) __THROW;
|
449 |
|
|
|
450 |
|
|
/* Try to acquire read lock for RWLOCK. */
|
451 |
|
|
extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock) __THROW;
|
452 |
|
|
|
453 |
|
|
#ifdef __USE_XOPEN2K
|
454 |
|
|
/* Try to acquire read lock for RWLOCK or return after specfied time. */
|
455 |
|
|
extern int pthread_rwlock_timedrdlock (pthread_rwlock_t *__restrict __rwlock,
|
456 |
|
|
__const struct timespec *__restrict
|
457 |
|
|
__abstime) __THROW;
|
458 |
|
|
#endif
|
459 |
|
|
|
460 |
|
|
/* Acquire write lock for RWLOCK. */
|
461 |
|
|
extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock) __THROW;
|
462 |
|
|
|
463 |
|
|
/* Try to acquire write lock for RWLOCK. */
|
464 |
|
|
extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock) __THROW;
|
465 |
|
|
|
466 |
|
|
#ifdef __USE_XOPEN2K
|
467 |
|
|
/* Try to acquire write lock for RWLOCK or return after specfied time. */
|
468 |
|
|
extern int pthread_rwlock_timedwrlock (pthread_rwlock_t *__restrict __rwlock,
|
469 |
|
|
__const struct timespec *__restrict
|
470 |
|
|
__abstime) __THROW;
|
471 |
|
|
#endif
|
472 |
|
|
|
473 |
|
|
/* Unlock RWLOCK. */
|
474 |
|
|
extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock) __THROW;
|
475 |
|
|
|
476 |
|
|
|
477 |
|
|
/* Functions for handling read-write lock attributes. */
|
478 |
|
|
|
479 |
|
|
/* Initialize attribute object ATTR with default values. */
|
480 |
|
|
extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr) __THROW;
|
481 |
|
|
|
482 |
|
|
/* Destroy attribute object ATTR. */
|
483 |
|
|
extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr) __THROW;
|
484 |
|
|
|
485 |
|
|
/* Return current setting of process-shared attribute of ATTR in PSHARED. */
|
486 |
|
|
extern int pthread_rwlockattr_getpshared (__const pthread_rwlockattr_t *
|
487 |
|
|
__restrict __attr,
|
488 |
|
|
int *__restrict __pshared) __THROW;
|
489 |
|
|
|
490 |
|
|
/* Set process-shared attribute of ATTR to PSHARED. */
|
491 |
|
|
extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr,
|
492 |
|
|
int __pshared) __THROW;
|
493 |
|
|
|
494 |
|
|
/* Return current setting of reader/writer preference. */
|
495 |
|
|
extern int pthread_rwlockattr_getkind_np (__const pthread_rwlockattr_t *__attr,
|
496 |
|
|
int *__pref) __THROW;
|
497 |
|
|
|
498 |
|
|
/* Set reader/write preference. */
|
499 |
|
|
extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr,
|
500 |
|
|
int __pref) __THROW;
|
501 |
|
|
#endif
|
502 |
|
|
|
503 |
|
|
#ifdef __USE_XOPEN2K
|
504 |
|
|
/* The IEEE Std. 1003.1j-2000 introduces functions to implement
|
505 |
|
|
spinlocks. */
|
506 |
|
|
|
507 |
|
|
/* Initialize the spinlock LOCK. If PSHARED is nonzero the spinlock can
|
508 |
|
|
be shared between different processes. */
|
509 |
|
|
extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
|
510 |
|
|
__THROW;
|
511 |
|
|
|
512 |
|
|
/* Destroy the spinlock LOCK. */
|
513 |
|
|
extern int pthread_spin_destroy (pthread_spinlock_t *__lock) __THROW;
|
514 |
|
|
|
515 |
|
|
/* Wait until spinlock LOCK is retrieved. */
|
516 |
|
|
extern int pthread_spin_lock (pthread_spinlock_t *__lock) __THROW;
|
517 |
|
|
|
518 |
|
|
/* Try to lock spinlock LOCK. */
|
519 |
|
|
extern int pthread_spin_trylock (pthread_spinlock_t *__lock) __THROW;
|
520 |
|
|
|
521 |
|
|
/* Release spinlock LOCK. */
|
522 |
|
|
extern int pthread_spin_unlock (pthread_spinlock_t *__lock) __THROW;
|
523 |
|
|
|
524 |
|
|
|
525 |
|
|
/* Barriers are a also a new feature in 1003.1j-2000. */
|
526 |
|
|
|
527 |
|
|
extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier,
|
528 |
|
|
__const pthread_barrierattr_t *__restrict
|
529 |
|
|
__attr, unsigned int __count) __THROW;
|
530 |
|
|
|
531 |
|
|
extern int pthread_barrier_destroy (pthread_barrier_t *__barrier) __THROW;
|
532 |
|
|
|
533 |
|
|
extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr) __THROW;
|
534 |
|
|
|
535 |
|
|
extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr) __THROW;
|
536 |
|
|
|
537 |
|
|
extern int pthread_barrierattr_getpshared (__const pthread_barrierattr_t *
|
538 |
|
|
__restrict __attr,
|
539 |
|
|
int *__restrict __pshared) __THROW;
|
540 |
|
|
|
541 |
|
|
extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
|
542 |
|
|
int __pshared) __THROW;
|
543 |
|
|
|
544 |
|
|
extern int pthread_barrier_wait (pthread_barrier_t *__barrier) __THROW;
|
545 |
|
|
#endif
|
546 |
|
|
|
547 |
|
|
|
548 |
|
|
/* Functions for handling thread-specific data. */
|
549 |
|
|
|
550 |
|
|
/* Create a key value identifying a location in the thread-specific
|
551 |
|
|
data area. Each thread maintains a distinct thread-specific data
|
552 |
|
|
area. DESTR_FUNCTION, if non-NULL, is called with the value
|
553 |
|
|
associated to that key when the key is destroyed.
|
554 |
|
|
DESTR_FUNCTION is not called if the value associated is NULL when
|
555 |
|
|
the key is destroyed. */
|
556 |
|
|
extern int pthread_key_create (pthread_key_t *__key,
|
557 |
|
|
void (*__destr_function) (void *)) __THROW;
|
558 |
|
|
|
559 |
|
|
/* Destroy KEY. */
|
560 |
|
|
extern int pthread_key_delete (pthread_key_t __key) __THROW;
|
561 |
|
|
|
562 |
|
|
/* Store POINTER in the thread-specific data slot identified by KEY. */
|
563 |
|
|
extern int pthread_setspecific (pthread_key_t __key,
|
564 |
|
|
__const void *__pointer) __THROW;
|
565 |
|
|
|
566 |
|
|
/* Return current value of the thread-specific data slot identified by KEY. */
|
567 |
|
|
extern void *pthread_getspecific (pthread_key_t __key) __THROW;
|
568 |
|
|
|
569 |
|
|
|
570 |
|
|
/* Functions for handling initialization. */
|
571 |
|
|
|
572 |
|
|
/* Guarantee that the initialization function INIT_ROUTINE will be called
|
573 |
|
|
only once, even if pthread_once is executed several times with the
|
574 |
|
|
same ONCE_CONTROL argument. ONCE_CONTROL must point to a static or
|
575 |
|
|
extern variable initialized to PTHREAD_ONCE_INIT. */
|
576 |
|
|
extern int pthread_once (pthread_once_t *__once_control,
|
577 |
|
|
void (*__init_routine) (void)) __THROW;
|
578 |
|
|
|
579 |
|
|
|
580 |
|
|
/* Functions for handling cancellation. */
|
581 |
|
|
|
582 |
|
|
/* Set cancelability state of current thread to STATE, returning old
|
583 |
|
|
state in *OLDSTATE if OLDSTATE is not NULL. */
|
584 |
|
|
extern int pthread_setcancelstate (int __state, int *__oldstate) __THROW;
|
585 |
|
|
|
586 |
|
|
/* Set cancellation state of current thread to TYPE, returning the old
|
587 |
|
|
type in *OLDTYPE if OLDTYPE is not NULL. */
|
588 |
|
|
extern int pthread_setcanceltype (int __type, int *__oldtype) __THROW;
|
589 |
|
|
|
590 |
|
|
/* Cancel THREAD immediately or at the next possibility. */
|
591 |
|
|
extern int pthread_cancel (pthread_t __thread1) __THROW;
|
592 |
|
|
|
593 |
|
|
/* Test for pending cancellation for the current thread and terminate
|
594 |
|
|
the thread as per pthread_exit(PTHREAD_CANCELED) if it has been
|
595 |
|
|
cancelled. */
|
596 |
|
|
extern void pthread_testcancel (void) __THROW;
|
597 |
|
|
|
598 |
|
|
|
599 |
|
|
/* Install a cleanup handler: ROUTINE will be called with arguments ARG
|
600 |
|
|
when the thread is cancelled or calls pthread_exit. ROUTINE will also
|
601 |
|
|
be called with arguments ARG when the matching pthread_cleanup_pop
|
602 |
|
|
is executed with non-zero EXECUTE argument.
|
603 |
|
|
pthread_cleanup_push and pthread_cleanup_pop are macros and must always
|
604 |
|
|
be used in matching pairs at the same nesting level of braces. */
|
605 |
|
|
|
606 |
|
|
#define pthread_cleanup_push(routine,arg) \
|
607 |
|
|
{ struct _pthread_cleanup_buffer _buffer; \
|
608 |
|
|
_pthread_cleanup_push (&_buffer, (routine), (arg));
|
609 |
|
|
|
610 |
|
|
extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *__buffer,
|
611 |
|
|
void (*__routine) (void *),
|
612 |
|
|
void *__arg) __THROW;
|
613 |
|
|
|
614 |
|
|
/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
|
615 |
|
|
If EXECUTE is non-zero, the handler function is called. */
|
616 |
|
|
|
617 |
|
|
#define pthread_cleanup_pop(execute) \
|
618 |
|
|
_pthread_cleanup_pop (&_buffer, (execute)); }
|
619 |
|
|
|
620 |
|
|
extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *__buffer,
|
621 |
|
|
int __execute) __THROW;
|
622 |
|
|
|
623 |
|
|
/* Install a cleanup handler as pthread_cleanup_push does, but also
|
624 |
|
|
saves the current cancellation type and set it to deferred cancellation. */
|
625 |
|
|
|
626 |
|
|
#ifdef __USE_GNU
|
627 |
|
|
# define pthread_cleanup_push_defer_np(routine,arg) \
|
628 |
|
|
{ struct _pthread_cleanup_buffer _buffer; \
|
629 |
|
|
_pthread_cleanup_push_defer (&_buffer, (routine), (arg));
|
630 |
|
|
|
631 |
|
|
extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *__buffer,
|
632 |
|
|
void (*__routine) (void *),
|
633 |
|
|
void *__arg) __THROW;
|
634 |
|
|
|
635 |
|
|
/* Remove a cleanup handler as pthread_cleanup_pop does, but also
|
636 |
|
|
restores the cancellation type that was in effect when the matching
|
637 |
|
|
pthread_cleanup_push_defer was called. */
|
638 |
|
|
|
639 |
|
|
# define pthread_cleanup_pop_restore_np(execute) \
|
640 |
|
|
_pthread_cleanup_pop_restore (&_buffer, (execute)); }
|
641 |
|
|
|
642 |
|
|
extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *__buffer,
|
643 |
|
|
int __execute) __THROW;
|
644 |
|
|
#endif
|
645 |
|
|
|
646 |
|
|
|
647 |
|
|
#ifdef __USE_XOPEN2K
|
648 |
|
|
/* Get ID of CPU-time clock for thread THREAD_ID. */
|
649 |
|
|
extern int pthread_getcpuclockid (pthread_t __thread_id,
|
650 |
|
|
clockid_t *__clock_id) __THROW;
|
651 |
|
|
#endif
|
652 |
|
|
|
653 |
|
|
|
654 |
|
|
/* Functions for handling signals. */
|
655 |
|
|
#include <bits/sigthread.h>
|
656 |
|
|
|
657 |
|
|
|
658 |
|
|
/* Functions for handling process creation and process execution. */
|
659 |
|
|
|
660 |
|
|
/* Install handlers to be called when a new process is created with FORK.
|
661 |
|
|
The PREPARE handler is called in the parent process just before performing
|
662 |
|
|
FORK. The PARENT handler is called in the parent process just after FORK.
|
663 |
|
|
The CHILD handler is called in the child process. Each of the three
|
664 |
|
|
handlers can be NULL, meaning that no handler needs to be called at that
|
665 |
|
|
point.
|
666 |
|
|
PTHREAD_ATFORK can be called several times, in which case the PREPARE
|
667 |
|
|
handlers are called in LIFO order (last added with PTHREAD_ATFORK,
|
668 |
|
|
first called before FORK), and the PARENT and CHILD handlers are called
|
669 |
|
|
in FIFO (first added, first called). */
|
670 |
|
|
|
671 |
|
|
extern int pthread_atfork (void (*__prepare) (void),
|
672 |
|
|
void (*__parent) (void),
|
673 |
|
|
void (*__child) (void)) __THROW;
|
674 |
|
|
|
675 |
|
|
/* Terminate all threads in the program except the calling process.
|
676 |
|
|
Should be called just before invoking one of the exec*() functions. */
|
677 |
|
|
|
678 |
|
|
extern void pthread_kill_other_threads_np (void) __THROW;
|
679 |
|
|
|
680 |
|
|
__END_DECLS
|
681 |
|
|
|
682 |
|
|
#endif /* pthread.h */
|