ref: 1cf523a5e0dc72fd9d41aa434e3359ff08c5406e dir: /libnpe_pthread/pthread_cond_signal.c/
#include "_pthread.h" int pthread_cond_signal(pthread_cond_t *const cond) { qlock(cond->l); rwakeup(cond); qunlock(cond->l); return 0; }