79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
// Copyright (C) 2010 Vicente Botet
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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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#define BOOST_THREAD_VERSION 2
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//#define BOOST_THREAD_PROVIDES_GENERIC_SHARED_MUTEX_ON_WIN
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//#define BOOST_THREAD_USES_LOG
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#include <boost/thread/thread_only.hpp>
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#include <boost/thread/shared_mutex.hpp>
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#include <boost/detail/no_exceptions_support.hpp>
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//#include <boost/thread/detail/log.hpp>
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boost::shared_mutex mutex;
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void thread()
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{
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//BOOST_THREAD_LOG << "<thrd" << BOOST_THREAD_END_LOG;
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BOOST_TRY
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{
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for (int i =0; i<10; ++i)
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{
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#ifndef BOOST_THREAD_USES_CHRONO
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boost::system_time timeout = boost::get_system_time() + boost::posix_time::milliseconds(50);
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if (mutex.timed_lock(timeout))
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{
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//BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
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boost::this_thread::sleep(boost::posix_time::milliseconds(10));
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mutex.unlock();
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//BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
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}
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#else
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boost::chrono::system_clock::time_point timeout = boost::chrono::system_clock::now() + boost::chrono::milliseconds(50);
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//BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
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if (mutex.try_lock_until(timeout))
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{
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//BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
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boost::this_thread::sleep_for(boost::chrono::milliseconds(10));
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mutex.unlock();
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//BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
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}
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#endif
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}
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}
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BOOST_CATCH (boost::lock_error& )
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{
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//BOOST_THREAD_LOG << "lock_error exception thrd>" << BOOST_THREAD_END_LOG;
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}
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BOOST_CATCH (...)
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{
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//BOOST_THREAD_LOG << "exception thrd>" << BOOST_THREAD_END_LOG;
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}
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BOOST_CATCH_END
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//BOOST_THREAD_LOG << "thrd>" << BOOST_THREAD_END_LOG;
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}
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int main()
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{
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//BOOST_THREAD_LOG << "<main" << BOOST_THREAD_END_LOG;
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const int nrThreads = 20;
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boost::thread* threads[nrThreads];
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for (int i = 0; i < nrThreads; ++i)
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threads[i] = new boost::thread(&thread);
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for (int i = 0; i < nrThreads; ++i)
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{
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threads[i]->join();
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//BOOST_THREAD_LOG << "main" << BOOST_THREAD_END_LOG;
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delete threads[i];
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//BOOST_THREAD_LOG << "main" << BOOST_THREAD_END_LOG;
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}
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//BOOST_THREAD_LOG << "main>" << BOOST_THREAD_END_LOG;
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return 0;
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}
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