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123 lines
2.6 KiB
C++
123 lines
2.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// Copyright (C) 2011 Vicente J. Botet Escriba
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// <boost/thread/condition_variable>
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// class condition_variable;
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// condition_variable(const condition_variable&) = delete;
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#include <boost/thread/condition_variable.hpp>
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#include <boost/thread/mutex.hpp>
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#include <boost/thread/thread.hpp>
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#include <boost/detail/lightweight_test.hpp>
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#if defined BOOST_THREAD_USES_CHRONO
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struct Clock
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{
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typedef boost::chrono::milliseconds duration;
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typedef duration::rep rep;
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typedef duration::period period;
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typedef boost::chrono::time_point<Clock> time_point;
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static const bool is_steady = true;
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static time_point now()
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{
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using namespace boost::chrono;
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return time_point(duration_cast<duration> (steady_clock::now().time_since_epoch()));
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}
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};
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class Pred
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{
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int& i_;
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public:
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explicit Pred(int& i) :
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i_(i)
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{
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}
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bool operator()()
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{
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return i_ != 0;
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}
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};
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boost::condition_variable cv;
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boost::mutex mut;
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int test1 = 0;
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int test2 = 0;
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int runs = 0;
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void f()
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{
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boost::unique_lock<boost::mutex> lk(mut);
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BOOST_TEST(test2 == 0);
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test1 = 1;
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cv.notify_one();
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Clock::time_point t0 = Clock::now();
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Clock::time_point t = t0 + Clock::duration(250);
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bool r = cv.wait_until(lk, t, Pred(test2));
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Clock::time_point t1 = Clock::now();
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if (runs == 0)
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{
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BOOST_TEST(t1 - t0 < Clock::duration(250));
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BOOST_TEST(test2 != 0);
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BOOST_TEST(r);
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}
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else
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{
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BOOST_TEST(t1 - t0 - Clock::duration(250) < Clock::duration(250+2));
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BOOST_TEST(test2 == 0);
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BOOST_TEST(!r);
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}
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++runs;
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}
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int main()
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{
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{
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boost::unique_lock<boost::mutex> lk(mut);
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boost::thread t(f);
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BOOST_TEST(test1 == 0);
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while (test1 == 0)
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cv.wait(lk);
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BOOST_TEST(test1 != 0);
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test2 = 1;
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lk.unlock();
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cv.notify_one();
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t.join();
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}
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test1 = 0;
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test2 = 0;
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{
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boost::unique_lock<boost::mutex> lk(mut);
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boost::thread t(f);
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BOOST_TEST(test1 == 0);
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while (test1 == 0)
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cv.wait(lk);
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BOOST_TEST(test1 != 0);
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lk.unlock();
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t.join();
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}
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return boost::report_errors();
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}
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#else
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#error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported"
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#endif
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