PTHREAD_MUTEX_LOCK  236 magick/semaphore.c   PTHREAD_MUTEX_LOCK(&semaphore_mutex);
PTHREAD_MUTEX_LOCK  396 magick/semaphore.c   PTHREAD_MUTEX_LOCK(&semaphore_mutex);
PTHREAD_MUTEX_LOCK  528 magick/semaphore.c   PTHREAD_MUTEX_LOCK(&semaphore_info->mutex);