Method LockD

library/cpp/coroutine/engine/mutex.h:17–29

    }

    int LockD(TCont* current, TInstant deadline) {
        while (!Token_) {
            const int ret = WaitQueue_.WaitD(current, deadline);

            if (ret != EWAKEDUP) {
                return ret;
            }
        }

        Token_ = false;

        return 0;
    }

    int LockT(TCont* current, TDuration timeout) {
        return LockD(current, timeout.ToDeadLine());