{

#if defined(BOOST_THREAD_PLATFORM_PTHREAD)

for (int i=0; i<3; ++i)

{

const time_t now_time = ::time(0);

const time_t wait_time = now_time+1;

time_t end_time;

assert(now_time < wait_time);

boost::unique_lock<boost::mutex> lk(mtx);

//const bool res =

(void)cv.timed_wait(lk, from_time_t(wait_time));

end_time = ::time(0);

std::cerr << "now_time =" << now_time << " \n";

std::cerr << "end_time =" << end_time << " \n";

std::cerr << "wait_time=" << wait_time << " \n";

std::cerr << "now_time =" << from_time_t(now_time) << " \n";

std::cerr << "end_time =" << from_time_t(end_time) << " \n";

std::cerr << "wait_time=" << from_time_t(wait_time) << " \n";

std::cerr << end_time - wait_time << " \n";

assert(end_time >= wait_time);

std::cerr << " OK\n";

}

#endif

return 0;