63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
// Copyright (C) 2009 Tim Blechmann
|
|
//
|
|
// Distributed under the Boost Software License, Version 1.0. (See
|
|
// accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
//[spsc_queue_example
|
|
#include <boost/thread/thread.hpp>
|
|
#include <boost/lockfree/spsc_queue.hpp>
|
|
#include <iostream>
|
|
|
|
#include <boost/atomic.hpp>
|
|
|
|
int producer_count = 0;
|
|
boost::atomic_int consumer_count (0);
|
|
|
|
boost::lockfree::spsc_queue<int, boost::lockfree::capacity<1024> > spsc_queue;
|
|
|
|
const int iterations = 10000000;
|
|
|
|
void producer(void)
|
|
{
|
|
for (int i = 0; i != iterations; ++i) {
|
|
int value = ++producer_count;
|
|
while (!spsc_queue.push(value))
|
|
;
|
|
}
|
|
}
|
|
|
|
boost::atomic<bool> done (false);
|
|
|
|
void consumer(void)
|
|
{
|
|
int value;
|
|
while (!done) {
|
|
while (spsc_queue.pop(value))
|
|
++consumer_count;
|
|
}
|
|
|
|
while (spsc_queue.pop(value))
|
|
++consumer_count;
|
|
}
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
using namespace std;
|
|
cout << "boost::lockfree::queue is ";
|
|
if (!spsc_queue.is_lock_free())
|
|
cout << "not ";
|
|
cout << "lockfree" << endl;
|
|
|
|
boost::thread producer_thread(producer);
|
|
boost::thread consumer_thread(consumer);
|
|
|
|
producer_thread.join();
|
|
done = true;
|
|
consumer_thread.join();
|
|
|
|
cout << "produced " << producer_count << " objects." << endl;
|
|
cout << "consumed " << consumer_count << " objects." << endl;
|
|
}
|
|
//]
|