pthread.h man page

Prolog

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pthread.h — threads

Synopsis

#include <pthread.h>

Description

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

PTHREAD_BARRIER_SERIAL_THREAD
PTHREAD_CANCEL_ASYNCHRONOUS
PTHREAD_CANCEL_ENABLE
PTHREAD_CANCEL_DEFERRED
PTHREAD_CANCEL_DISABLE
PTHREAD_CANCELED
PTHREAD_CREATE_DETACHED
PTHREAD_CREATE_JOINABLE
PTHREAD_EXPLICIT_SCHED
PTHREAD_INHERIT_SCHED
PTHREAD_MUTEX_DEFAULT
PTHREAD_MUTEX_ERRORCHECK
PTHREAD_MUTEX_NORMAL
PTHREAD_MUTEX_RECURSIVE
PTHREAD_MUTEX_ROBUST
PTHREAD_MUTEX_STALLED
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 <pthread.h> header shall define the following compile-time constant expressions valid as initializers for the following types:

NameInitializer for Type
PTHREAD_COND_INITIALIZERpthread_cond_t
PTHREAD_MUTEX_INITIALIZERpthread_mutex_t
PTHREAD_RWLOCK_INITIALIZERpthread_rwlock_t

The <pthread.h> header shall define the 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, and pthread_t types as described in <sys/types.h>.

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_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_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_pop(int);
void  pthread_cleanup_push(void (*)(void*), void *);
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_consistent(pthread_mutex_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 *restrict,
          const struct timespec *restrict);
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_getrobust(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_setrobust(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.

See Also

<sched.h>, <sys_types.h>, <time.h>

The System Interfaces volume of POSIX.1‐2008, pthread_atfork(), pthread_attr_destroy(), pthread_attr_getdetachstate(), pthread_attr_getguardsize(), pthread_attr_getinheritsched(), pthread_attr_getschedparam(), pthread_attr_getschedpolicy(), pthread_attr_getscope(), pthread_attr_getstack(), pthread_attr_getstacksize(), pthread_barrier_destroy(), pthread_barrier_wait(), pthread_barrierattr_destroy(), pthread_barrierattr_getpshared(), pthread_cancel(), pthread_cleanup_pop(), pthread_cond_broadcast(), pthread_cond_destroy(), pthread_cond_timedwait(), pthread_condattr_destroy(), pthread_condattr_getclock(), pthread_condattr_getpshared(), pthread_create(), pthread_detach(), pthread_equal(), pthread_exit(), pthread_getconcurrency(), pthread_getcpuclockid(), pthread_getschedparam(), pthread_getspecific(), pthread_join(), pthread_key_create(), pthread_key_delete(), pthread_mutex_consistent(), pthread_mutex_destroy(), pthread_mutex_getprioceiling(), pthread_mutex_lock(), pthread_mutex_timedlock(), pthread_mutexattr_destroy(), pthread_mutexattr_getprioceiling(), pthread_mutexattr_getprotocol(), pthread_mutexattr_getpshared(), pthread_mutexattr_getrobust(), pthread_mutexattr_gettype(), pthread_once(), pthread_rwlock_destroy(), pthread_rwlock_rdlock(), pthread_rwlock_timedrdlock(), pthread_rwlock_timedwrlock(), pthread_rwlock_trywrlock(), pthread_rwlock_unlock(), pthread_rwlockattr_destroy(), pthread_rwlockattr_getpshared(), pthread_self(), pthread_setcancelstate(), pthread_setschedprio(), pthread_spin_destroy(), pthread_spin_lock(), pthread_spin_unlock()

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2013 IEEE/The Open Group POSIX Programmer's Manual