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()