dummym            246 ext/threads/threads.c     ScmInternalMutex dummym = PTHREAD_MUTEX_INITIALIZER;
dummym            250 ext/threads/threads.c     pthread_mutex_lock(&dummym);
dummym            251 ext/threads/threads.c     if (pthread_cond_timedwait(&dummyc, &dummym, pts) == EINTR) {
dummym            254 ext/threads/threads.c     pthread_mutex_unlock(&dummym);