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