<pthread.h>(0P)

NAME
pthread.h - threads

SYNOPSIS

#include <pthread.h>

DESCRIPTION

The <pthread.h> header shall define the following symbols:

PTHREAD_BARRIER_SERIAL_THREAD

PTHREAD_CANCEL_ASYNCHRONOUS
PTHREAD_CANCEL_ENABLE
PTHREAD_CANCEL_DEFERRED
PTHREAD_CANCEL_DISABLE
PTHREAD_CANCELED
PTHREAD_COND_INITIALIZER
PTHREAD_CREATE_DETACHED
PTHREAD_CREATE_JOINABLE
PTHREAD_EXPLICIT_SCHED
PTHREAD_INHERIT_SCHED

PTHREAD_MUTEX_DEFAULT
PTHREAD_MUTEX_ERRORCHECK

PTHREAD_MUTEX_INITIALIZER

PTHREAD_MUTEX_NORMAL
PTHREAD_MUTEX_RECURSIVE

PTHREAD_ONCE_INIT

PTHREAD_PRIO_INHERIT

PTHREAD_PRIO_NONE

PTHREAD_PRIO_PROTECT

PTHREAD_PROCESS_SHARED
PTHREAD_PROCESS_PRIVATE

PTHREAD_SCOPE_PROCESS
PTHREAD_SCOPE_SYSTEM

The following types shall be defined as described in <sys/types.h> :

pthread_attr_t

pthread_barrier_t
pthread_barrierattr_t

pthread_cond_t
pthread_condattr_t
pthread_key_t
pthread_mutex_t
pthread_mutexattr_t
pthread_once_t
pthread_rwlock_t
pthread_rwlockattr_t

pthread_spinlock_t

pthread_t

The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.

    int   pthread_atfork(void (*)(void), void (*)(void),
              void(*)(void));
    int   pthread_attr_destroy(pthread_attr_t *);
    int   pthread_attr_getdetachstate(const pthread_attr_t *, int *);
    int   pthread_attr_getguardsize(const pthread_attr_t *restrict,
              size_t *restrict);
    int   pthread_attr_getinheritsched(const pthread_attr_t *restrict,
              int *restrict);
    int   pthread_attr_getschedparam(const pthread_attr_t *restrict,
              struct sched_param *restrict);
    int   pthread_attr_getschedpolicy(const pthread_attr_t *restrict,
              int *restrict);
    int   pthread_attr_getscope(const pthread_attr_t *restrict,
              int *restrict);
    int   pthread_attr_getstack(const pthread_attr_t *restrict,
              void **restrict, size_t *restrict);
    int   pthread_attr_getstackaddr(const pthread_attr_t *restrict,
              void **restrict);
    int   pthread_attr_getstacksize(const pthread_attr_t *restrict,
              size_t *restrict);
    int   pthread_attr_init(pthread_attr_t *);
    int   pthread_attr_setdetachstate(pthread_attr_t *, int);
    int   pthread_attr_setguardsize(pthread_attr_t *, size_t);
    int   pthread_attr_setinheritsched(pthread_attr_t *, int);
    int   pthread_attr_setschedparam(pthread_attr_t *restrict,
              const struct sched_param *restrict);
    int   pthread_attr_setschedpolicy(pthread_attr_t *, int);
    int   pthread_attr_setscope(pthread_attr_t *, int);
    int   pthread_attr_setstack(pthread_attr_t *, void *, size_t);
    int   pthread_attr_setstackaddr(pthread_attr_t *, void *);
    int   pthread_attr_setstacksize(pthread_attr_t *, size_t);
    int   pthread_barrier_destroy(pthread_barrier_t *);
    int   pthread_barrier_init(pthread_barrier_t *restrict,
              const pthread_barrierattr_t *restrict, unsigned);
    int   pthread_barrier_wait(pthread_barrier_t *);
    int   pthread_barrierattr_destroy(pthread_barrierattr_t *);
    int   pthread_barrierattr_getpshared(
              const pthread_barrierattr_t *restrict, int *restrict);
    int   pthread_barrierattr_init(pthread_barrierattr_t *);
    int   pthread_barrierattr_setpshared(pthread_barrierattr_t *, int);
    int   pthread_cancel(pthread_t);
    void  pthread_cleanup_push(void (*)(void *), void *);
    void  pthread_cleanup_pop(int);
    int   pthread_cond_broadcast(pthread_cond_t *);
    int   pthread_cond_destroy(pthread_cond_t *);
    int   pthread_cond_init(pthread_cond_t *restrict,
              const pthread_condattr_t *restrict);
    int   pthread_cond_signal(pthread_cond_t *);
    int   pthread_cond_timedwait(pthread_cond_t *restrict,
              pthread_mutex_t *restrict, const struct timespec *restrict);
    int   pthread_cond_wait(pthread_cond_t *restrict,
              pthread_mutex_t *restrict);
    int   pthread_condattr_destroy(pthread_condattr_t *);
    int   pthread_condattr_getclock(const pthread_condattr_t *restrict,
              clockid_t *restrict);
    int   pthread_condattr_getpshared(const pthread_condattr_t *restrict,
              int *restrict);
    int   pthread_condattr_init(pthread_condattr_t *);
    int   pthread_condattr_setclock(pthread_condattr_t *, clockid_t);
    int   pthread_condattr_setpshared(pthread_condattr_t *, int);
    int   pthread_create(pthread_t *restrict, const pthread_attr_t *restrict,
              void *(*)(void *), void *restrict);
    int   pthread_detach(pthread_t);
    int   pthread_equal(pthread_t, pthread_t);
    void  pthread_exit(void *);
    int   pthread_getconcurrency(void);
    int   pthread_getcpuclockid(pthread_t, clockid_t *);
    int   pthread_getschedparam(pthread_t, int *restrict,
              struct sched_param *restrict);
    void *pthread_getspecific(pthread_key_t);
    int   pthread_join(pthread_t, void **);
    int   pthread_key_create(pthread_key_t *, void (*)(void *));
    int   pthread_key_delete(pthread_key_t);
    int   pthread_mutex_destroy(pthread_mutex_t *);
    int   pthread_mutex_getprioceiling(const pthread_mutex_t *restrict,
              int *restrict);
    int   pthread_mutex_init(pthread_mutex_t *restrict,
              const pthread_mutexattr_t *restrict);
    int   pthread_mutex_lock(pthread_mutex_t *);
    int   pthread_mutex_setprioceiling(pthread_mutex_t *restrict, int,
              int *restrict);
    int   pthread_mutex_timedlock(pthread_mutex_t *,
              const struct timespec *);
    int   pthread_mutex_trylock(pthread_mutex_t *);
    int   pthread_mutex_unlock(pthread_mutex_t *);
    int   pthread_mutexattr_destroy(pthread_mutexattr_t *);
    int   pthread_mutexattr_getprioceiling(
              const pthread_mutexattr_t *restrict, int *restrict);
    int   pthread_mutexattr_getprotocol(const pthread_mutexattr_t *restrict,
              int *restrict);
    int   pthread_mutexattr_getpshared(const pthread_mutexattr_t *restrict,
              int *restrict);
    int   pthread_mutexattr_gettype(const pthread_mutexattr_t *restrict,
              int *restrict);
    int   pthread_mutexattr_init(pthread_mutexattr_t *);
    int   pthread_mutexattr_setprioceiling(pthread_mutexattr_t *, int);
    int   pthread_mutexattr_setprotocol(pthread_mutexattr_t *, int);
    int   pthread_mutexattr_setpshared(pthread_mutexattr_t *, int);
    int   pthread_mutexattr_settype(pthread_mutexattr_t *, int);
    int   pthread_once(pthread_once_t *, void (*)(void));
    int   pthread_rwlock_destroy(pthread_rwlock_t *);
    int   pthread_rwlock_init(pthread_rwlock_t *restrict,
              const pthread_rwlockattr_t *restrict);
    int   pthread_rwlock_rdlock(pthread_rwlock_t *);
    int   pthread_rwlock_timedrdlock(pthread_rwlock_t *restrict,
              const struct timespec *restrict);
    int   pthread_rwlock_timedwrlock(pthread_rwlock_t *restrict,
              const struct timespec *restrict);
    int   pthread_rwlock_tryrdlock(pthread_rwlock_t *);
    int   pthread_rwlock_trywrlock(pthread_rwlock_t *);
    int   pthread_rwlock_unlock(pthread_rwlock_t *);
    int   pthread_rwlock_wrlock(pthread_rwlock_t *);
    int   pthread_rwlockattr_destroy(pthread_rwlockattr_t *);
    int   pthread_rwlockattr_getpshared(
              const pthread_rwlockattr_t *restrict, int *restrict);
    int   pthread_rwlockattr_init(pthread_rwlockattr_t *);
    int   pthread_rwlockattr_setpshared(pthread_rwlockattr_t *, int);
    pthread_t
          pthread_self(void);
    int   pthread_setcancelstate(int, int *);
    int   pthread_setcanceltype(int, int *);
    int   pthread_setconcurrency(int);
    int   pthread_setschedparam(pthread_t, int,
              const struct sched_param *);
    int   pthread_setschedprio(pthread_t, int);
    int   pthread_setspecific(pthread_key_t, const void *);
    int   pthread_spin_destroy(pthread_spinlock_t *);
    int   pthread_spin_init(pthread_spinlock_t *, int);
    int   pthread_spin_lock(pthread_spinlock_t *);
    int   pthread_spin_trylock(pthread_spinlock_t *);
    int   pthread_spin_unlock(pthread_spinlock_t *);
    void  pthread_testcancel(void);

Inclusion of the <pthread.h> header shall make symbols defined in the headers <sched.h> and <time.h> visible.

The following sections are informative.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

<sched.h>, <sys/types.h>, <time.h>, the System Interfaces volume of IEEE Std 1003.1-2001, pthread_attr_getguardsize(), pthread_attr_init(), pthread_attr_setscope(), pthread_barrier_destroy(), pthread_barrier_init(), pthread_barrier_wait(), pthread_barrierattr_destroy(), pthread_barrierattr_getpshared(), pthread_barrierattr_init(), pthread_barrierattr_setpshared(), pthread_cancel(), pthread_cleanup_pop(), pthread_cond_init(), pthread_cond_signal(), pthread_cond_wait(), pthread_condattr_getclock(), pthread_condattr_init(), pthread_condattr_setclock(), pthread_create(), pthread_detach(), pthread_equal(), pthread_exit(), pthread_getconcurrency(), pthread_getcpuclockid(), pthread_getschedparam(), pthread_join(), pthread_key_create(), pthread_key_delete(), pthread_mutex_init(), pthread_mutex_lock(), pthread_mutex_setprioceiling(), pthread_mutex_timedlock(), pthread_mutexattr_init(), pthread_mutexattr_gettype(), pthread_mutexattr_setprotocol(), pthread_once(), pthread_rwlock_destroy(), pthread_rwlock_init(), pthread_rwlock_rdlock(), pthread_rwlock_timedrdlock(), pthread_rwlock_timedwrlock(), pthread_rwlock_tryrdlock(), pthread_rwlock_trywrlock(), pthread_rwlock_unlock(), pthread_rwlock_wrlock(), pthread_rwlockattr_destroy(), pthread_rwlockattr_getpshared(), pthread_rwlockattr_init(), pthread_rwlockattr_setpshared(), pthread_self(), pthread_setcancelstate(), pthread_setspecific(), pthread_spin_destroy(), pthread_spin_init(), pthread_spin_lock(), pthread_spin_trylock(), pthread_spin_unlock()

COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .