--- /dev/null
+/* Linuxthreads - a simple clone()-based implementation of Posix */
+/* threads for Linux. */
+/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
+/* */
+/* This program is free software; you can redistribute it and/or */
+/* modify it under the terms of the GNU Library General Public License */
+/* as published by the Free Software Foundation; either version 2 */
+/* of the License, or (at your option) any later version. */
+/* */
+/* This program is distributed in the hope that it will be useful, */
+/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
+/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
+/* GNU Library General Public License for more details. */
+
+#ifndef _PTHREAD_H
+#define _PTHREAD_H 1
+
+#include <features.h>
+
+#include <sched.h>
+#include <time.h>
+
+#define __need_sigset_t
+#include <signal.h>
+#include <bits/pthreadtypes.h>
+#include <bits/initspin.h>
+
+
+__BEGIN_DECLS
+
+/* Initializers. */
+
+#define PTHREAD_MUTEX_INITIALIZER \
+ {0, 0, 0, PTHREAD_MUTEX_TIMED_NP, __LOCK_INITIALIZER}
+#ifdef __USE_GNU
+# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
+ {0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __LOCK_INITIALIZER}
+# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
+ {0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __LOCK_INITIALIZER}
+# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
+ {0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __LOCK_INITIALIZER}
+#endif
+
+#define PTHREAD_COND_INITIALIZER {__LOCK_INITIALIZER, 0}
+
+#ifdef __USE_UNIX98
+# define PTHREAD_RWLOCK_INITIALIZER \
+ { __LOCK_INITIALIZER, 0, NULL, NULL, NULL, \
+ PTHREAD_RWLOCK_DEFAULT_NP, PTHREAD_PROCESS_PRIVATE }
+#endif
+#ifdef __USE_GNU
+# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
+ { __LOCK_INITIALIZER, 0, NULL, NULL, NULL, \
+ PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, PTHREAD_PROCESS_PRIVATE }
+#endif
+
+/* Values for attributes. */
+
+enum
+{
+ PTHREAD_CREATE_JOINABLE,
+#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE
+ PTHREAD_CREATE_DETACHED
+#define PTHREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED
+};
+
+enum
+{
+ PTHREAD_INHERIT_SCHED,
+#define PTHREAD_INHERIT_SCHED PTHREAD_INHERIT_SCHED
+ PTHREAD_EXPLICIT_SCHED
+#define PTHREAD_EXPLICIT_SCHED PTHREAD_EXPLICIT_SCHED
+};
+
+enum
+{
+ PTHREAD_SCOPE_SYSTEM,
+#define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_SYSTEM
+ PTHREAD_SCOPE_PROCESS
+#define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_PROCESS
+};
+
+enum
+{
+ PTHREAD_MUTEX_TIMED_NP,
+ PTHREAD_MUTEX_RECURSIVE_NP,
+ PTHREAD_MUTEX_ERRORCHECK_NP,
+ PTHREAD_MUTEX_ADAPTIVE_NP
+#ifdef __USE_UNIX98
+ ,
+ PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP,
+ PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP,
+ PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP,
+ PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
+#endif
+#ifdef __USE_GNU
+ /* For compatibility. */
+ , PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_ADAPTIVE_NP
+#endif
+};
+
+enum
+{
+ PTHREAD_PROCESS_PRIVATE,
+#define PTHREAD_PROCESS_PRIVATE PTHREAD_PROCESS_PRIVATE
+ PTHREAD_PROCESS_SHARED
+#define PTHREAD_PROCESS_SHARED PTHREAD_PROCESS_SHARED
+};
+
+#ifdef __USE_UNIX98
+enum
+{
+ PTHREAD_RWLOCK_PREFER_READER_NP,
+ PTHREAD_RWLOCK_PREFER_WRITER_NP,
+ PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
+ PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_WRITER_NP
+};
+#endif /* Unix98 */
+
+#define PTHREAD_ONCE_INIT 0
+
+/* Special constants */
+
+#ifdef __USE_XOPEN2K
+/* -1 is distinct from 0 and all errno constants */
+# define PTHREAD_BARRIER_SERIAL_THREAD -1
+#endif
+
+/* Cleanup buffers */
+
+struct _pthread_cleanup_buffer
+{
+ void (*__routine) (void *); /* Function to call. */
+ void *__arg; /* Its argument. */
+ int __canceltype; /* Saved cancellation type. */
+ struct _pthread_cleanup_buffer *__prev; /* Chaining of cleanup functions. */
+};
+
+/* Cancellation */
+
+enum
+{
+ PTHREAD_CANCEL_ENABLE,
+#define PTHREAD_CANCEL_ENABLE PTHREAD_CANCEL_ENABLE
+ PTHREAD_CANCEL_DISABLE
+#define PTHREAD_CANCEL_DISABLE PTHREAD_CANCEL_DISABLE
+};
+enum
+{
+ PTHREAD_CANCEL_DEFERRED,
+#define PTHREAD_CANCEL_DEFERRED PTHREAD_CANCEL_DEFERRED
+ PTHREAD_CANCEL_ASYNCHRONOUS
+#define PTHREAD_CANCEL_ASYNCHRONOUS PTHREAD_CANCEL_ASYNCHRONOUS
+};
+#define PTHREAD_CANCELED ((void *) -1)
+
+
+/* Function for handling threads. */
+
+/* Create a thread with given attributes ATTR (or default attributes
+ if ATTR is NULL), and call function START_ROUTINE with given
+ arguments ARG. */
+extern int pthread_create (pthread_t *__restrict __thread1,
+ __const pthread_attr_t *__restrict __attr,
+ void *(*__start_routine) (void *),
+ void *__restrict __arg) __THROW;
+
+/* Obtain the identifier of the current thread. */
+extern pthread_t pthread_self (void) __THROW;
+
+/* Compare two thread identifiers. */
+extern int pthread_equal (pthread_t __thread1, pthread_t __thread2) __THROW;
+
+/* Terminate calling thread. */
+extern void pthread_exit (void *__retval)
+ __THROW __attribute__ ((__noreturn__));
+
+/* Make calling thread wait for termination of the thread TH. The
+ exit status of the thread is stored in *THREAD_RETURN, if THREAD_RETURN
+ is not NULL. */
+extern int pthread_join (pthread_t __th, void **__thread_return) __THROW;
+
+/* Indicate that the thread TH is never to be joined with PTHREAD_JOIN.
+ The resources of TH will therefore be freed immediately when it
+ terminates, instead of waiting for another thread to perform PTHREAD_JOIN
+ on it. */
+extern int pthread_detach (pthread_t __th) __THROW;
+
+
+/* Functions for handling attributes. */
+
+/* Initialize thread attribute *ATTR with default attributes
+ (detachstate is PTHREAD_JOINABLE, scheduling policy is SCHED_OTHER,
+ no user-provided stack). */
+extern int pthread_attr_init (pthread_attr_t *__attr) __THROW;
+
+/* Destroy thread attribute *ATTR. */
+extern int pthread_attr_destroy (pthread_attr_t *__attr) __THROW;
+
+/* Set the `detachstate' attribute in *ATTR according to DETACHSTATE. */
+extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
+ int __detachstate) __THROW;
+
+/* Return in *DETACHSTATE the `detachstate' attribute in *ATTR. */
+extern int pthread_attr_getdetachstate (__const pthread_attr_t *__attr,
+ int *__detachstate) __THROW;
+
+/* Set scheduling parameters (priority, etc) in *ATTR according to PARAM. */
+extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr,
+ __const struct sched_param *__restrict
+ __param) __THROW;
+
+/* Return in *PARAM the scheduling parameters of *ATTR. */
+extern int pthread_attr_getschedparam (__const pthread_attr_t *__restrict
+ __attr,
+ struct sched_param *__restrict __param)
+ __THROW;
+
+/* Set scheduling policy in *ATTR according to POLICY. */
+extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy)
+ __THROW;
+
+/* Return in *POLICY the scheduling policy of *ATTR. */
+extern int pthread_attr_getschedpolicy (__const pthread_attr_t *__restrict
+ __attr, int *__restrict __policy)
+ __THROW;
+
+/* Set scheduling inheritance mode in *ATTR according to INHERIT. */
+extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
+ int __inherit) __THROW;
+
+/* Return in *INHERIT the scheduling inheritance mode of *ATTR. */
+extern int pthread_attr_getinheritsched (__const pthread_attr_t *__restrict
+ __attr, int *__restrict __inherit)
+ __THROW;
+
+/* Set scheduling contention scope in *ATTR according to SCOPE. */
+extern int pthread_attr_setscope (pthread_attr_t *__attr, int __scope)
+ __THROW;
+
+/* Return in *SCOPE the scheduling contention scope of *ATTR. */
+extern int pthread_attr_getscope (__const pthread_attr_t *__restrict __attr,
+ int *__restrict __scope) __THROW;
+
+#ifdef __USE_UNIX98
+/* Set the size of the guard area at the bottom of the thread. */
+extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
+ size_t __guardsize) __THROW;
+
+/* Get the size of the guard area at the bottom of the thread. */
+extern int pthread_attr_getguardsize (__const pthread_attr_t *__restrict
+ __attr, size_t *__restrict __guardsize)
+ __THROW;
+#endif
+
+/* Set the starting address of the stack of the thread to be created.
+ Depending on whether the stack grows up or down the value must either
+ be higher or lower than all the address in the memory block. The
+ minimal size of the block must be PTHREAD_STACK_SIZE. */
+extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
+ void *__stackaddr) __THROW;
+
+/* Return the previously set address for the stack. */
+extern int pthread_attr_getstackaddr (__const pthread_attr_t *__restrict
+ __attr, void **__restrict __stackaddr)
+ __THROW;
+
+#ifdef __USE_XOPEN2K
+/* The following two interfaces are intended to replace the last two. They
+ require setting the address as well as the size since only setting the
+ address will make the implementation on some architectures impossible. */
+extern int pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
+ size_t __stacksize) __THROW;
+
+/* Return the previously set address for the stack. */
+extern int pthread_attr_getstack (__const pthread_attr_t *__restrict __attr,
+ void **__restrict __stackaddr,
+ size_t *__restrict __stacksize) __THROW;
+#endif
+
+/* Add information about the minimum stack size needed for the thread
+ to be started. This size must never be less than PTHREAD_STACK_SIZE
+ and must also not exceed the system limits. */
+extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
+ size_t __stacksize) __THROW;
+
+/* Return the currently used minimal stack size. */
+extern int pthread_attr_getstacksize (__const pthread_attr_t *__restrict
+ __attr, size_t *__restrict __stacksize)
+ __THROW;
+
+#ifdef __USE_GNU
+/* Get thread attributes corresponding to the already running thread TH. */
+extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr) __THROW;
+#endif
+
+/* Functions for scheduling control. */
+
+/* Set the scheduling parameters for TARGET_THREAD according to POLICY
+ and *PARAM. */
+extern int pthread_setschedparam (pthread_t __target_thread, int __policy,
+ __const struct sched_param *__param)
+ __THROW;
+
+/* Return in *POLICY and *PARAM the scheduling parameters for TARGET_THREAD. */
+extern int pthread_getschedparam (pthread_t __target_thread,
+ int *__restrict __policy,
+ struct sched_param *__restrict __param)
+ __THROW;
+
+#ifdef __USE_UNIX98
+/* Determine level of concurrency. */
+extern int pthread_getconcurrency (void) __THROW;
+
+/* Set new concurrency level to LEVEL. */
+extern int pthread_setconcurrency (int __level) __THROW;
+#endif
+
+#ifdef __USE_GNU
+/* Yield the processor to another thread or process.
+ This function is similar to the POSIX `sched_yield' function but
+ might be differently implemented in the case of a m-on-n thread
+ implementation. */
+extern int pthread_yield (void) __THROW;
+#endif
+
+/* Functions for mutex handling. */
+
+/* Initialize MUTEX using attributes in *MUTEX_ATTR, or use the
+ default values if later is NULL. */
+extern int pthread_mutex_init (pthread_mutex_t *__restrict __mutex,
+ __const pthread_mutexattr_t *__restrict
+ __mutex_attr) __THROW;
+
+/* Destroy MUTEX. */
+extern int pthread_mutex_destroy (pthread_mutex_t *__mutex) __THROW;
+
+/* Try to lock MUTEX. */
+extern int pthread_mutex_trylock (pthread_mutex_t *__mutex) __THROW;
+
+/* Wait until lock for MUTEX becomes available and lock it. */
+extern int pthread_mutex_lock (pthread_mutex_t *__mutex) __THROW;
+
+#ifdef __USE_XOPEN2K
+/* Wait until lock becomes available, or specified time passes. */
+extern int pthread_mutex_timedlock (pthread_mutex_t *__restrict __mutex,
+ __const struct timespec *__restrict
+ __abstime) __THROW;
+#endif
+
+/* Unlock MUTEX. */
+extern int pthread_mutex_unlock (pthread_mutex_t *__mutex) __THROW;
+
+
+/* Functions for handling mutex attributes. */
+
+/* Initialize mutex attribute object ATTR with default attributes
+ (kind is PTHREAD_MUTEX_TIMED_NP). */
+extern int pthread_mutexattr_init (pthread_mutexattr_t *__attr) __THROW;
+
+/* Destroy mutex attribute object ATTR. */
+extern int pthread_mutexattr_destroy (pthread_mutexattr_t *__attr) __THROW;
+
+/* Get the process-shared flag of the mutex attribute ATTR. */
+extern int pthread_mutexattr_getpshared (__const pthread_mutexattr_t *
+ __restrict __attr,
+ int *__restrict __pshared) __THROW;
+
+/* Set the process-shared flag of the mutex attribute ATTR. */
+extern int pthread_mutexattr_setpshared (pthread_mutexattr_t *__attr,
+ int __pshared) __THROW;
+
+#ifdef __USE_UNIX98
+/* Set the mutex kind attribute in *ATTR to KIND (either PTHREAD_MUTEX_NORMAL,
+ PTHREAD_MUTEX_RECURSIVE, PTHREAD_MUTEX_ERRORCHECK, or
+ PTHREAD_MUTEX_DEFAULT). */
+extern int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind)
+ __THROW;
+
+/* Return in *KIND the mutex kind attribute in *ATTR. */
+extern int pthread_mutexattr_gettype (__const pthread_mutexattr_t *__restrict
+ __attr, int *__restrict __kind) __THROW;
+#endif
+
+
+/* Functions for handling conditional variables. */
+
+/* Initialize condition variable COND using attributes ATTR, or use
+ the default values if later is NULL. */
+extern int pthread_cond_init (pthread_cond_t *__restrict __cond,
+ __const pthread_condattr_t *__restrict
+ __cond_attr) __THROW;
+
+/* Destroy condition variable COND. */
+extern int pthread_cond_destroy (pthread_cond_t *__cond) __THROW;
+
+/* Wake up one thread waiting for condition variable COND. */
+extern int pthread_cond_signal (pthread_cond_t *__cond) __THROW;
+
+/* Wake up all threads waiting for condition variables COND. */
+extern int pthread_cond_broadcast (pthread_cond_t *__cond) __THROW;
+
+/* Wait for condition variable COND to be signaled or broadcast.
+ MUTEX is assumed to be locked before. */
+extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
+ pthread_mutex_t *__restrict __mutex) __THROW;
+
+/* Wait for condition variable COND to be signaled or broadcast until
+ ABSTIME. MUTEX is assumed to be locked before. ABSTIME is an
+ absolute time specification; zero is the beginning of the epoch
+ (00:00:00 GMT, January 1, 1970). */
+extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
+ pthread_mutex_t *__restrict __mutex,
+ __const struct timespec *__restrict
+ __abstime) __THROW;
+
+/* Functions for handling condition variable attributes. */
+
+/* Initialize condition variable attribute ATTR. */
+extern int pthread_condattr_init (pthread_condattr_t *__attr) __THROW;
+
+/* Destroy condition variable attribute ATTR. */
+extern int pthread_condattr_destroy (pthread_condattr_t *__attr) __THROW;
+
+/* Get the process-shared flag of the condition variable attribute ATTR. */
+extern int pthread_condattr_getpshared (__const pthread_condattr_t *
+ __restrict __attr,
+ int *__restrict __pshared) __THROW;
+
+/* Set the process-shared flag of the condition variable attribute ATTR. */
+extern int pthread_condattr_setpshared (pthread_condattr_t *__attr,
+ int __pshared) __THROW;
+
+
+#ifdef __USE_UNIX98
+/* Functions for handling read-write locks. */
+
+/* Initialize read-write lock RWLOCK using attributes ATTR, or use
+ the default values if later is NULL. */
+extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
+ __const pthread_rwlockattr_t *__restrict
+ __attr) __THROW;
+
+/* Destroy read-write lock RWLOCK. */
+extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock) __THROW;
+
+/* Acquire read lock for RWLOCK. */
+extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock) __THROW;
+
+/* Try to acquire read lock for RWLOCK. */
+extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock) __THROW;
+
+#ifdef __USE_XOPEN2K
+/* Try to acquire read lock for RWLOCK or return after specfied time. */
+extern int pthread_rwlock_timedrdlock (pthread_rwlock_t *__restrict __rwlock,
+ __const struct timespec *__restrict
+ __abstime) __THROW;
+#endif
+
+/* Acquire write lock for RWLOCK. */
+extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock) __THROW;
+
+/* Try to acquire write lock for RWLOCK. */
+extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock) __THROW;
+
+#ifdef __USE_XOPEN2K
+/* Try to acquire write lock for RWLOCK or return after specfied time. */
+extern int pthread_rwlock_timedwrlock (pthread_rwlock_t *__restrict __rwlock,
+ __const struct timespec *__restrict
+ __abstime) __THROW;
+#endif
+
+/* Unlock RWLOCK. */
+extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock) __THROW;
+
+
+/* Functions for handling read-write lock attributes. */
+
+/* Initialize attribute object ATTR with default values. */
+extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr) __THROW;
+
+/* Destroy attribute object ATTR. */
+extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr) __THROW;
+
+/* Return current setting of process-shared attribute of ATTR in PSHARED. */
+extern int pthread_rwlockattr_getpshared (__const pthread_rwlockattr_t *
+ __restrict __attr,
+ int *__restrict __pshared) __THROW;
+
+/* Set process-shared attribute of ATTR to PSHARED. */
+extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr,
+ int __pshared) __THROW;
+
+/* Return current setting of reader/writer preference. */
+extern int pthread_rwlockattr_getkind_np (__const pthread_rwlockattr_t *__attr,
+ int *__pref) __THROW;
+
+/* Set reader/write preference. */
+extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr,
+ int __pref) __THROW;
+#endif
+
+#ifdef __USE_XOPEN2K
+/* The IEEE Std. 1003.1j-2000 introduces functions to implement
+ spinlocks. */
+
+/* Initialize the spinlock LOCK. If PSHARED is nonzero the spinlock can
+ be shared between different processes. */
+extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
+ __THROW;
+
+/* Destroy the spinlock LOCK. */
+extern int pthread_spin_destroy (pthread_spinlock_t *__lock) __THROW;
+
+/* Wait until spinlock LOCK is retrieved. */
+extern int pthread_spin_lock (pthread_spinlock_t *__lock) __THROW;
+
+/* Try to lock spinlock LOCK. */
+extern int pthread_spin_trylock (pthread_spinlock_t *__lock) __THROW;
+
+/* Release spinlock LOCK. */
+extern int pthread_spin_unlock (pthread_spinlock_t *__lock) __THROW;
+
+
+/* Barriers are a also a new feature in 1003.1j-2000. */
+
+extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier,
+ __const pthread_barrierattr_t *__restrict
+ __attr, unsigned int __count) __THROW;
+
+extern int pthread_barrier_destroy (pthread_barrier_t *__barrier) __THROW;
+
+extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr) __THROW;
+
+extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr) __THROW;
+
+extern int pthread_barrierattr_getpshared (__const pthread_barrierattr_t *
+ __restrict __attr,
+ int *__restrict __pshared) __THROW;
+
+extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
+ int __pshared) __THROW;
+
+extern int pthread_barrier_wait (pthread_barrier_t *__barrier) __THROW;
+#endif
+
+
+/* Functions for handling thread-specific data. */
+
+/* Create a key value identifying a location in the thread-specific
+ data area. Each thread maintains a distinct thread-specific data
+ area. DESTR_FUNCTION, if non-NULL, is called with the value
+ associated to that key when the key is destroyed.
+ DESTR_FUNCTION is not called if the value associated is NULL when
+ the key is destroyed. */
+extern int pthread_key_create (pthread_key_t *__key,
+ void (*__destr_function) (void *)) __THROW;
+
+/* Destroy KEY. */
+extern int pthread_key_delete (pthread_key_t __key) __THROW;
+
+/* Store POINTER in the thread-specific data slot identified by KEY. */
+extern int pthread_setspecific (pthread_key_t __key,
+ __const void *__pointer) __THROW;
+
+/* Return current value of the thread-specific data slot identified by KEY. */
+extern void *pthread_getspecific (pthread_key_t __key) __THROW;
+
+
+/* Functions for handling initialization. */
+
+/* Guarantee that the initialization function INIT_ROUTINE will be called
+ only once, even if pthread_once is executed several times with the
+ same ONCE_CONTROL argument. ONCE_CONTROL must point to a static or
+ extern variable initialized to PTHREAD_ONCE_INIT. */
+extern int pthread_once (pthread_once_t *__once_control,
+ void (*__init_routine) (void)) __THROW;
+
+
+/* Functions for handling cancellation. */
+
+/* Set cancelability state of current thread to STATE, returning old
+ state in *OLDSTATE if OLDSTATE is not NULL. */
+extern int pthread_setcancelstate (int __state, int *__oldstate) __THROW;
+
+/* Set cancellation state of current thread to TYPE, returning the old
+ type in *OLDTYPE if OLDTYPE is not NULL. */
+extern int pthread_setcanceltype (int __type, int *__oldtype) __THROW;
+
+/* Cancel THREAD immediately or at the next possibility. */
+extern int pthread_cancel (pthread_t __thread1) __THROW;
+
+/* Test for pending cancellation for the current thread and terminate
+ the thread as per pthread_exit(PTHREAD_CANCELED) if it has been
+ cancelled. */
+extern void pthread_testcancel (void) __THROW;
+
+
+/* Install a cleanup handler: ROUTINE will be called with arguments ARG
+ when the thread is cancelled or calls pthread_exit. ROUTINE will also
+ be called with arguments ARG when the matching pthread_cleanup_pop
+ is executed with non-zero EXECUTE argument.
+ pthread_cleanup_push and pthread_cleanup_pop are macros and must always
+ be used in matching pairs at the same nesting level of braces. */
+
+#define pthread_cleanup_push(routine,arg) \
+ { struct _pthread_cleanup_buffer _buffer; \
+ _pthread_cleanup_push (&_buffer, (routine), (arg));
+
+extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *__buffer,
+ void (*__routine) (void *),
+ void *__arg) __THROW;
+
+/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
+ If EXECUTE is non-zero, the handler function is called. */
+
+#define pthread_cleanup_pop(execute) \
+ _pthread_cleanup_pop (&_buffer, (execute)); }
+
+extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *__buffer,
+ int __execute) __THROW;
+
+/* Install a cleanup handler as pthread_cleanup_push does, but also
+ saves the current cancellation type and set it to deferred cancellation. */
+
+#ifdef __USE_GNU
+# define pthread_cleanup_push_defer_np(routine,arg) \
+ { struct _pthread_cleanup_buffer _buffer; \
+ _pthread_cleanup_push_defer (&_buffer, (routine), (arg));
+
+extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *__buffer,
+ void (*__routine) (void *),
+ void *__arg) __THROW;
+
+/* Remove a cleanup handler as pthread_cleanup_pop does, but also
+ restores the cancellation type that was in effect when the matching
+ pthread_cleanup_push_defer was called. */
+
+# define pthread_cleanup_pop_restore_np(execute) \
+ _pthread_cleanup_pop_restore (&_buffer, (execute)); }
+
+extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *__buffer,
+ int __execute) __THROW;
+#endif
+
+
+#ifdef __USE_XOPEN2K
+/* Get ID of CPU-time clock for thread THREAD_ID. */
+extern int pthread_getcpuclockid (pthread_t __thread_id,
+ clockid_t *__clock_id) __THROW;
+#endif
+
+
+/* Functions for handling signals. */
+#include <bits/sigthread.h>
+
+
+/* Functions for handling process creation and process execution. */
+
+/* Install handlers to be called when a new process is created with FORK.
+ The PREPARE handler is called in the parent process just before performing
+ FORK. The PARENT handler is called in the parent process just after FORK.
+ The CHILD handler is called in the child process. Each of the three
+ handlers can be NULL, meaning that no handler needs to be called at that
+ point.
+ PTHREAD_ATFORK can be called several times, in which case the PREPARE
+ handlers are called in LIFO order (last added with PTHREAD_ATFORK,
+ first called before FORK), and the PARENT and CHILD handlers are called
+ in FIFO (first added, first called). */
+
+extern int pthread_atfork (void (*__prepare) (void),
+ void (*__parent) (void),
+ void (*__child) (void)) __THROW;
+
+/* Terminate all threads in the program except the calling process.
+ Should be called just before invoking one of the exec*() functions. */
+
+extern void pthread_kill_other_threads_np (void) __THROW;
+
+__END_DECLS
+
+#endif /* pthread.h */
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