#include <pthread.h>
int pthread_cond_wait(
pthread_cond_t *cond,
pthread_mutex_t *mutex
);
STATUS CODES:
EINVAL
The specified condition variable or mutex is not initialized OR different
mutexes were specified for concurrent pthread_cond_wait() and
pthread_cond_timedwait() operations on the same condition variable OR
the mutex was not owned by the current thread at the time of the call.
RTEMS POSIX API User's Guide