pthread_cond_wait man page on FreeBSD
PTHREAD_COND_WAIT(3) BSD Library Functions Manual PTHREAD_COND_WAIT(3)
pthread_cond_wait — wait on a condition variable
POSIX Threads Library (libpthread, -lpthread)
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 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
If successful, the pthread_cond_wait() function will return zero. Other‐
wise an error number will be returned to indicate the error.
The pthread_cond_wait() function will fail if:
[EINVAL] The value specified by cond or the value specified by
mutex is invalid.
[EPERM] The specified mutex was not locked by the calling
pthread_cond_broadcast(3), pthread_cond_destroy(3), pthread_cond_init(3),
The pthread_cond_wait() function conforms to ISO/IEC 9945-1:1996
BSD February 16, 2006 BSD
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