从C++11的主循环中读取和写入各自线程中的不同文件

#include <iostream>
#include <fstream>
#include <thread>
#include <mutex>
#include <condition_variable>

std::mutex mtx;
std::condition_variable cv;
bool ready = false;
bool processed = false;

void readFile(const std::string& filename) {
    std::unique_lock<std::mutex> lock(mtx);
    while (!ready) {
        cv.wait(lock);
    }

    // 读取文件的逻辑
    std::ifstream file(filename);
    std::string line;
    while (std::getline(file, line)) {
        // 处理文件内容
        // ...
    }

    processed = true;
    cv.notify_one();
}

void writeFile(const std::string& filename) {
    std::unique_lock<std::mutex> lock(mtx);

    // 写入文件的逻辑
    std::ofstream file(filename);
    file << "Hello, World!" << std::endl;

    ready = true;
    cv.notify_one();

    while (!processed) {
        cv.wait(lock);
    }
}

int main() {
    std::string readFile = "read.txt";
    std::string writeFile = "write.txt";

    std::thread reader(readFile, readFile);
    std::thread writer(writeFile, writeFile);

    reader.join();
    writer.join();

    return 0;
}