C++ (Cpp) condition_variable_any::wait_until示例

示例#1

文件： wait_until.pass.cpp 项目： Bigcheese/libcxx

void f()
{
    L1 lk(m0);
    assert(test2 == 0);
    test1 = 1;
    cv.notify_one();
    Clock::time_point t0 = Clock::now();
    Clock::time_point t = t0 + Clock::duration(250);
    while (test2 == 0 && cv.wait_until(lk, t) == std::cv_status::no_timeout)
        ;
    Clock::time_point t1 = Clock::now();
    if (runs == 0)
    {
        assert(t1 - t0 < Clock::duration(250));
        assert(test2 != 0);
    }
    else
    {
        assert(t1 - t0 - Clock::duration(250) < Clock::duration(5));
        assert(test2 == 0);
    }
    ++runs;
}

示例#2

文件： wait_until_pred.pass.cpp 项目： jcarlson23/libcxx

void f()
{
    L1 lk(m0);
    assert(test2 == 0);
    test1 = 1;
    cv.notify_one();
    Clock::time_point t0 = Clock::now();
    Clock::time_point t = t0 + Clock::duration(250);
    bool r = cv.wait_until(lk, t, Pred(test2));
    Clock::time_point t1 = Clock::now();
    if (runs == 0)
    {
        assert(t1 - t0 < Clock::duration(250));
        assert(test2 != 0);
        assert(r);
    }
    else
    {
        assert(t1 - t0 - Clock::duration(250) < Clock::duration(2));
        assert(test2 == 0);
        assert(!r);
    }
    ++runs;
}