// LockFree.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#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)
{
int count = 0;
for (int i = 0; i != iterations; ++i) {
int value = ++producer_count;
while (!spsc_queue.push(value)) //队列满则等待。
++count;
}
std::cout << "full " << count << " times\n";
}
boost::atomic<bool> done (false);
void consumer(void)
{
int value;
while (!done) { //生产者还在生产
while (spsc_queue.pop(value)) //如果有产品就消费
++consumer_count;
}
while (spsc_queue.pop(value)) //生产者停工
++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;
}
单个生产者和单个消费者模型(spsc)
最新推荐文章于 2024-01-07 13:25:27 发布