一些测试1

#include <iostream>
#include <queue>
#include <windows.h>
#include <ctime>
#include <thread>

using namespace std;

static const int item_total = 100; //总共要生产 item_total个item

struct Buffer
{
    queue<int> buffer;
    int in;
    int out;
} buffer_res;

typedef struct Buffer Buffer;

void produce_item(Buffer* b, int item)
{
    b->buffer.push(item);
    b->in++;

    //模拟不互斥的情况
    Sleep(200);
}

void consume_item(Buffer* b)
{
    if (b->buffer.size() > 0)
    {
        int temp = b->buffer.front();

        b->out++;
        b->buffer.pop();

        //模拟不互斥的情况
        cout << "out:" << temp << endl;
        Sleep(100);
    }
}

//生产者任务
void producer()
{
    for (int i = 1; i <= item_total; i++)
    {
        produce_item(&buffer_res, i);
    }
}

//消费者任务
void consumer()
{
    for (int i = 1; i <= item_total; i++)
    {
        consume_item(&buffer_res);
    }
    while (1)
    {
        consume_item(&buffer_res);
        if (buffer_res.out == 100)
            break;
    }
}

//初始化 buffer
void init_buffer(Buffer* b)
{
    b->in = 0;
    b->out = 0;
}

int main()
{
    clock_t startTime, endTime;
    startTime = clock(); //计时开始

    init_buffer(&buffer_res);

    thread producer_thread(producer);
    thread consumer_thread(consumer);

    producer_thread.join();
    consumer_thread.join();

    endTime = clock(); //计时结束
    cout << "The run time is: " << (double)(endTime - startTime) / CLOCKS_PER_SEC << "s" << endl;
    getchar();
    return 0;
}