71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
// Copyright (C) 2009 Tim Blechmann
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//[stack_example
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#include <boost/thread/thread.hpp>
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#include <boost/lockfree/stack.hpp>
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#include <iostream>
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#include <boost/atomic.hpp>
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boost::atomic_int producer_count(0);
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boost::atomic_int consumer_count(0);
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boost::lockfree::stack<int> stack(128);
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const int iterations = 1000000;
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const int producer_thread_count = 4;
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const int consumer_thread_count = 4;
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void producer(void)
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{
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for (int i = 0; i != iterations; ++i) {
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int value = ++producer_count;
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while (!stack.push(value))
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;
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}
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}
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boost::atomic<bool> done (false);
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void consumer(void)
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{
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int value;
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while (!done) {
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while (stack.pop(value))
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++consumer_count;
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}
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while (stack.pop(value))
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++consumer_count;
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}
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int main(int argc, char* argv[])
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{
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using namespace std;
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cout << "boost::lockfree::stack is ";
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if (!stack.is_lock_free())
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cout << "not ";
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cout << "lockfree" << endl;
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boost::thread_group producer_threads, consumer_threads;
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for (int i = 0; i != producer_thread_count; ++i)
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producer_threads.create_thread(producer);
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for (int i = 0; i != consumer_thread_count; ++i)
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consumer_threads.create_thread(consumer);
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producer_threads.join_all();
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done = true;
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consumer_threads.join_all();
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cout << "produced " << producer_count << " objects." << endl;
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cout << "consumed " << consumer_count << " objects." << endl;
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}
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//]
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