void notify_one_fn( boost::barrier & b,
                    boost::fibers::mutex & mtx,
                    boost::fibers::condition_variable & cond,
                    bool & flag) {
    b.wait();
	std::unique_lock< boost::fibers::mutex > lk( mtx);
    flag = true;
    lk.unlock();
	cond.notify_one();
}
void fn1( boost::fibers::mutex & m, boost::fibers::condition_variable & cv) {
    std::unique_lock< boost::fibers::mutex > lk( m);
    BOOST_CHECK(test2 == 0);
    test1 = 1;
    cv.notify_one();
    while (test2 == 0) {
        cv.wait(lk);
    }
    BOOST_CHECK(test2 != 0);
}
void fn5( boost::fibers::mutex & m, boost::fibers::condition_variable & cv) {
    std::unique_lock< boost::fibers::mutex > lk( m);
    BOOST_CHECK(test2 == 0);
    test1 = 1;
    cv.notify_one();
    std::chrono::steady_clock::time_point t0 = std::chrono::steady_clock::now();
    int count=0;
    cv.wait_for(lk, ms(250), Pred(test2));
    count++;
    std::chrono::steady_clock::time_point t1 = std::chrono::steady_clock::now();
    if (runs == 0) {
        BOOST_CHECK(t1 - t0 < ms(250+1000));
        BOOST_CHECK(test2 != 0);
    } else {
        BOOST_CHECK(t1 - t0 - ms(250) < ms(count*250+100));
        BOOST_CHECK(test2 == 0);
    }
    ++runs;
}
void fn3( boost::fibers::mutex & m, boost::fibers::condition_variable & cv) {
    std::unique_lock< boost::fibers::mutex > lk( m);
    BOOST_CHECK(test2 == 0);
    test1 = 1;
    cv.notify_one();
    std::chrono::steady_clock::time_point t0 = std::chrono::steady_clock::now();
    std::chrono::steady_clock::time_point t = t0 + ms(250);
    bool r = cv.wait_until(lk, t, Pred(test2));
    std::chrono::steady_clock::time_point t1 = std::chrono::steady_clock::now();
    if (runs == 0) {
        BOOST_CHECK(t1 - t0 < ms(250));
        BOOST_CHECK(test2 != 0);
        BOOST_CHECK(r);
    } else {
        BOOST_CHECK(t1 - t0 - ms(250) < ms(250+100));
        BOOST_CHECK(test2 == 0);
        BOOST_CHECK(!r);
    }
    ++runs;
}
void fn2( boost::fibers::mutex & m, boost::fibers::condition_variable & cv) {
    std::unique_lock< boost::fibers::mutex > lk( m);
    BOOST_CHECK(test2 == 0);
    test1 = 1;
    cv.notify_one();
    std::chrono::system_clock::time_point t0 = std::chrono::system_clock::now();
    std::chrono::system_clock::time_point t = t0 + ms(250);
    int count=0;
    while (test2 == 0 && cv.wait_until(lk, t) == boost::fibers::cv_status::no_timeout)
        count++;
    std::chrono::system_clock::time_point t1 = std::chrono::system_clock::now();
    if (runs == 0) {
        BOOST_CHECK(t1 - t0 < ms(250));
        BOOST_CHECK(test2 != 0);
    } else {
        BOOST_CHECK(t1 - t0 - ms(250) < ms(count*250+100+1000));
        BOOST_CHECK(test2 == 0);
    }
    ++runs;
}
void notify_one_fn( boost::fibers::condition_variable & cond) {
	cond.notify_one();
}