57 lines
936 B
C++
57 lines
936 B
C++
// Copyright (C) 2013 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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////////////////////////////////////////////
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//#define BOOST_THREAD_PROVIDES_GENERIC_SHARED_MUTEX_ON_WIN
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#include <boost/thread/thread_only.hpp>
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#include <boost/thread/shared_mutex.hpp>
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using namespace boost;
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shared_mutex mtx;
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const int max_count = 100;
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void f()
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{
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int count =max_count;
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while (count--)
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{
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upgrade_lock<shared_mutex> lock(mtx);
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}
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}
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void g()
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{
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int count =max_count;
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while (count--)
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{
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shared_lock<shared_mutex> lock(mtx);
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}
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}
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void h()
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{
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int count =max_count;
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while (count--)
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{
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unique_lock<shared_mutex> lock(mtx);
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}
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}
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int main()
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{
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thread t0(f);
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thread t1(g);
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thread t2(h);
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t0.join();
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t1.join();
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t2.join();
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return 0;
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}
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