PTHREAD_COND_WAIT(3) BSD Library Functions Manual PTHREAD_COND_WAIT(3)NAMEpthread_cond_wait — wait on a condition variable
LIBRARY
POSIX Threads Library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>
int
pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
DESCRIPTION
The pthread_cond_wait() function atomically blocks the current thread
waiting on the condition variable specified by cond, and releases the
mutex specified by mutex. The waiting thread unblocks only after another
thread calls pthread_cond_signal(3), or pthread_cond_broadcast(3) with
the same condition variable, and the current thread reacquires the lock
on mutex.
RETURN VALUES
If successful, the pthread_cond_wait() function will return zero. Other‐
wise an error number will be returned to indicate the error.
ERRORS
The pthread_cond_wait() function will fail if:
[EINVAL] The value specified by cond or the value specified by
mutex is invalid.
SEE ALSOpthread_cond_broadcast(3), pthread_cond_destroy(3), pthread_cond_init(3),
pthread_cond_signal(3), pthread_cond_timedwait(3)STANDARDS
The pthread_cond_wait() function conforms to ISO/IEC 9945-1:1996
(“POSIX.1”).
BSD July 10, 2009 BSD