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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Copyright (C) 2012 Vicente J. Botet Escriba
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// <boost/thread/shared_mutex.hpp>
// class shared_mutex;
// template <class Rep, class Period>
// bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
#include <boost/thread/shared_mutex.hpp>
#include <boost/thread/thread.hpp>
#include <boost/detail/lightweight_test.hpp>
boost::shared_mutex m;
typedef boost::chrono::steady_clock Clock;
typedef Clock::time_point time_point;
typedef Clock::duration duration;
typedef boost::chrono::milliseconds ms;
typedef boost::chrono::nanoseconds ns;
void f1()
{
time_point t0 = Clock::now();
// This test is spurious as it depends on the time the thread system switches the threads
BOOST_TEST(m.try_lock_for(ms(300)+ms(1000)) == true);
time_point t1 = Clock::now();
m.unlock();
ns d = t1 - t0 - ms(250);
BOOST_TEST(d < ns(5000000)+ms(1000)); // within 5ms
}
void f2()
{
time_point t0 = Clock::now();
BOOST_TEST(m.try_lock_for(ms(250)) == false);
time_point t1 = Clock::now();
ns d = t1 - t0 - ms(250);
// This test is spurious as it depends on the time the thread system switches the threads
BOOST_TEST(d < ns(5000000)+ms(1000)); // within 5ms
}
int main()
{
{
m.lock();
boost::thread t(f1);
boost::this_thread::sleep_for(ms(250));
m.unlock();
t.join();
}
{
m.lock();
boost::thread t(f2);
boost::this_thread::sleep_for(ms(300));
m.unlock();
t.join();
}
return boost::report_errors();
}
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