int
     pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);

DESCRIPTION

     The pthread_cond_wait() function atomically unlocks the mutex argument
     and waits on the cond argument.

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

     pthread_cond_wait() will fail if:

     [EINVAL]           The value specified by cond or the value specified by
                        mutex is invalid.

SEE ALSO

     pthread_cond_broadcast(3), pthread_cond_destroy(3), pthread_cond_init(3),
     pthread_cond_signal(3), pthread_cond_timedwait(3)

STANDARDS

     pthread_cond_wait() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').

Darwin                         November 5, 2001                         Darwin