132 lines
3.5 KiB
C++
132 lines
3.5 KiB
C++
/*
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Copyright (c) 2010, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <boost/bind.hpp>
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#include <boost/atomic.hpp>
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#include <list>
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#include "libtorrent/thread.hpp"
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#include "test.hpp"
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#include "setup_transfer.hpp" // for test_sleep
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using namespace libtorrent;
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void fun(condition_variable* s, libtorrent::mutex* m, int* waiting, int i)
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{
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fprintf(stderr, "thread %d waiting\n", i);
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libtorrent::mutex::scoped_lock l(*m);
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*waiting += 1;
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s->wait(l);
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fprintf(stderr, "thread %d done\n", i);
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}
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void increment(condition_variable* s, libtorrent::mutex* m, int* waiting, boost::atomic<int>* c)
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{
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libtorrent::mutex::scoped_lock l(*m);
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*waiting += 1;
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s->wait(l);
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l.unlock();
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for (int i = 0; i < 1000000; ++i)
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++*c;
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}
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void decrement(condition_variable* s, libtorrent::mutex* m, int* waiting, boost::atomic<int>* c)
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{
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libtorrent::mutex::scoped_lock l(*m);
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*waiting += 1;
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s->wait(l);
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l.unlock();
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for (int i = 0; i < 1000000; ++i)
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--*c;
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}
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int test_main()
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{
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condition_variable cond;
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libtorrent::mutex m;
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std::list<thread*> threads;
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int waiting = 0;
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for (int i = 0; i < 20; ++i)
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{
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threads.push_back(new thread(boost::bind(&fun, &cond, &m, &waiting, i)));
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}
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// make sure all threads are waiting on the condition_variable
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libtorrent::mutex::scoped_lock l(m);
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while (waiting < 20)
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{
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l.unlock();
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test_sleep(10);
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l.lock();
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}
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cond.notify_all();
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l.unlock();
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for (std::list<thread*>::iterator i = threads.begin(); i != threads.end(); ++i)
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{
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(*i)->join();
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delete *i;
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}
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threads.clear();
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waiting = 0;
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boost::atomic<int> c(0);
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for (int i = 0; i < 3; ++i)
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{
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threads.push_back(new thread(boost::bind(&increment, &cond, &m, &waiting, &c)));
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threads.push_back(new thread(boost::bind(&decrement, &cond, &m, &waiting, &c)));
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}
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// make sure all threads are waiting on the condition_variable
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l.lock();
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while (waiting < 6)
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{
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l.unlock();
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test_sleep(10);
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l.lock();
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}
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cond.notify_all();
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l.unlock();
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for (std::list<thread*>::iterator i = threads.begin(); i != threads.end(); ++i)
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{
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(*i)->join();
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delete *i;
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}
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TEST_CHECK(c == 0);
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return 0;
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}
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