rb_mutex_unlock_th  461 thread.c       	err = rb_mutex_unlock_th(mutex, th);
rb_mutex_unlock_th   22 thread_sync.c  static const char* rb_mutex_unlock_th(rb_mutex_t *mutex, rb_thread_t volatile *th);
rb_mutex_unlock_th   61 thread_sync.c  	    const char *err = rb_mutex_unlock_th(mutex, mutex->th);
rb_mutex_unlock_th  377 thread_sync.c      err = rb_mutex_unlock_th(mutex, GET_THREAD());