PTHREAD_COND_WAIT(3) BSD Programmer's Manual PTHREAD_COND_WAIT(3)
pthread_cond_wait - wait on a condition variable
#include <pthread.h> int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
The pthread_cond_wait() function atomically blocks the current thread waiting on the condition variable specified by cond, and unblocks the mu- tex 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.
If successful, the pthread_cond_wait() function will return zero. Other- wise an error number will be returned to indicate the error.
pthread_cond_wait() will fail if: [EINVAL] The value specified by cond or the value specified by mutex is invalid.
pthread_cond_broadcast(3), pthread_cond_destroy(3), pthread_cond_init(3), pthread_cond_signal(3), pthread_cond_timedwait(3)
pthread_cond_wait() conforms to ISO/IEC 9945-1:1996 ("POSIX"). MirOS BSD #10-current July 28, 1998 1
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