threads_mpmc_ring_queue.cpp

Multiple producers / multiple consumers wait-free ring queue example

 
#include "threads/mpmc_ring_queue.h"
 
#include <iostream>
#include <string>
#include <thread>
 
int main(int argc, char** argv)
{
    std::cout << "Please enter some integer numbers. Enter '0' to exit..." << std::endl;
 
    // Create multiple producers / multiple consumers wait-free ring queue
    CppCommon::MPMCRingQueue<int> queue(1024);
 
    // Start consumer thread
    auto consumer = std::thread([&queue]()
    {
        int item;
 
        do
        {
            // Dequeue using yield waiting strategy
            while (!queue.Dequeue(item))
                std::this_thread::yield();
 
            // Consume the item
            std::cout << "Your entered number: " << item << std::endl;
        } while (item != 0);
    });
 
    // Perform text input
    std::string line;
    while (getline(std::cin, line))
    {
        int item = std::stoi(line);
 
        // Enqueue using yield waiting strategy
        while (!queue.Enqueue(item))
            std::this_thread::yield();
 
        if (item == 0)
            break;
    }
 
    // Wait for the consumer thread
    consumer.join();
 
    return 0;
}