329     if (!cond) return thrd_error;  in cnd_broadcast()
356     if (!cond) return thrd_error;  in cnd_init()
374     if (!cond) return thrd_error;  in cnd_signal()
387     if (!cond || !mtx || !abs_time) return thrd_error;  in cnd_timedwait()
391     return (GetLastError() == ERROR_TIMEOUT) ? thrd_busy : thrd_error;  in cnd_timedwait()
401     if (!cond || !mtx) return thrd_error;  in cnd_wait()
424     if (!mtx) return thrd_error;  in mtx_init()
429         return thrd_error;  in mtx_init()
438     if (!mtx) return thrd_error;  in mtx_lock()
448     if (!mtx || !ts) return thrd_error;  in mtx_timedlock()
465     if (!mtx) return thrd_error;  in mtx_trylock()
473     if (!mtx) return thrd_error;  in mtx_unlock()
486     if (!thr) return thrd_error;  in thrd_create()
495         return thrd_error;  in thrd_create()
572         return thrd_error;  in thrd_join()
576             return thrd_error;  in thrd_join()
606     if (!key) return thrd_error;  in tss_create()
611             return thrd_error;  in tss_create()
614     return (*key != 0xFFFFFFFF) ? thrd_success : thrd_error;  in tss_create()
635     return TlsSetValue(key, val) ? thrd_success : thrd_error;  in tss_set()