Method try_lock

src/bthread/mutex.cpp:1138–1146

}

bool FastPthreadMutex::try_lock() {
    auto split = (bthread::MutexInternal*)&_futex;
    bool lock = !split->locked.exchange(1, butil::memory_order_acquire);
    if (lock) {
        PTHREAD_MUTEX_SET_OWNER(_owner);
        ADD_TLS_PTHREAD_LOCK_COUNT;
    }
    return lock;
}

bool FastPthreadMutex::timed_lock(const struct timespec* abstime) {
    if (try_lock()) {