void wait_fn(
	boost::fibers::mutex & mtx,
	boost::fibers::condition_variable & cond) {
	std::unique_lock< boost::fibers::mutex > lk( mtx);
	cond.wait( lk);
	++value1;
}
void wait_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);
	cond.wait( lk, [&flag](){ return flag; });
	++value;
}
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 fiber_waiter::wait_ready() noexcept
	{
		if (gth_thread_type == thread_type::thread)
		{
			std::unique_lock<std::mutex> lk(m_thread_mutex);
			return m_thread_var.wait(lk, [this] { return m_ready.load(std::memory_order_relaxed); });
		}
		else
		{
			std::unique_lock<boost::fibers::mutex> lk(m_fiber_mutex);
			return m_fiber_var.wait(lk, [this] { return m_ready.load(std::memory_order_relaxed); });
		}
	}