Method lock

src/bthread/mutex.cpp:1129–1136

}

void FastPthreadMutex::lock() {
    if (try_lock()) {
        return;
    }

    PTHREAD_MUTEX_CHECK_OWNER(_owner);
    (void)lock_contended(NULL);
}

bool FastPthreadMutex::try_lock() {
    auto split = (bthread::MutexInternal*)&_futex;