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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) 2011 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/locks.hpp>
- // template <class Mutex> class unique_lock;
- // unique_lock(mutex_type& m, try_to_lock_t);
- #include <boost/thread/lock_types.hpp>
- #include <boost/thread/mutex.hpp>
- #include <boost/thread/thread.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include "../../../../../timming.hpp"
- boost::mutex m;
- #if defined BOOST_THREAD_USES_CHRONO
- typedef boost::chrono::high_resolution_clock Clock;
- typedef Clock::time_point time_point;
- typedef Clock::duration duration;
- typedef boost::chrono::milliseconds ms;
- typedef boost::chrono::nanoseconds ns;
- time_point t0;
- time_point t1;
- #else
- #endif
- const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
- void f()
- {
- #if defined BOOST_THREAD_USES_CHRONO
- t0 = Clock::now();
- {
- boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock);
- BOOST_TEST(lk.owns_lock() == false);
- }
- {
- boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock);
- BOOST_TEST(lk.owns_lock() == false);
- }
- {
- boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock);
- BOOST_TEST(lk.owns_lock() == false);
- }
- for (;;)
- {
- boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock);
- if (lk.owns_lock()) {
- t1 = Clock::now();
- break;
- }
- }
- //m.unlock();
- #else
- // time_point t0 = Clock::now();
- // {
- // boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock);
- // BOOST_TEST(lk.owns_lock() == false);
- // }
- // {
- // boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock);
- // BOOST_TEST(lk.owns_lock() == false);
- // }
- // {
- // boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock);
- // BOOST_TEST(lk.owns_lock() == false);
- // }
- for (;;)
- {
- boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock);
- if (lk.owns_lock()) break;
- }
- //time_point t1 = Clock::now();
- //ns d = t1 - t0 - ms(250);
- //BOOST_TEST(d < max_diff);
- #endif
- }
- int main()
- {
- m.lock();
- boost::thread t(f);
- #if defined BOOST_THREAD_USES_CHRONO
- time_point t2 = Clock::now();
- boost::this_thread::sleep_for(ms(250));
- time_point t3 = Clock::now();
- #else
- #endif
- m.unlock();
- t.join();
- #if defined BOOST_THREAD_USES_CHRONO
- ns sleep_time = t3 - t2;
- ns d_ns = t1 - t0 - sleep_time;
- ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns);
- std::cout << "d_ns: " << d_ns.count() << std::endl;
- std::cout << "d_ms: " << d_ms.count() << std::endl;
- // BOOST_TEST_GE(d_ms.count(), 0);
- BOOST_THREAD_TEST_IT(d_ms, max_diff);
- BOOST_THREAD_TEST_IT(d_ns, ns(max_diff));
- #endif
- return boost::report_errors();
- }
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