基于C++的作业/工作者多线程系统的扩展

#include <iostream>
#include <thread>
#include <mutex>

std::mutex mtx;
int shared_data = 0;

void worker() {
    std::lock_guard<std::mutex> lock(mtx);
    shared_data++;
}

int main() {
    std::thread t1(worker);
    std::thread t2(worker);
    t1.join();
    t2.join();
    std::cout << "Shared data: " << shared_data << std::endl;
    return 0;
}

#include <iostream>
#include <thread>
#include <mutex>

std::mutex mtx1, mtx2;

void thread1() {
    std::lock(mtx1, mtx2);
    std::lock_guard<std::mutex> lock1(mtx1, std::adopt_lock);
    std::lock_guard<std::mutex> lock2(mtx2, std::adopt_lock);
    // 执行任务
}

void thread2() {
    std::lock(mtx2, mtx1);
    std::lock_guard<std::mutex> lock1(mtx2, std::adopt_lock);
    std::lock_guard<std::mutex> lock2(mtx1, std::adopt_lock);
    // 执行任务
}

int main() {
    std::thread t1(thread1);
    std::thread t2(thread2);
    t1.join();
    t2.join();
    return 0;
}