34 lines
782 B
C++
34 lines
782 B
C++
//
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// Created by light on 20-1-31.
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//
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// join 注意点
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/**
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* 这用于从父线程分离新创建的线程
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* 在分离线程之前，请务必检查它是否可以joinable，
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* 否则可能会导致两次分离，并且双重detach()将导致程序终止
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* 如果我们有分离的线程并且main函数正在返回，那么分离的线程执行将被挂起
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*/
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#include <iostream>
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#include <thread>
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#include <chrono>
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#include <mutex>
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using namespace std;
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void run(int count) {
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while (count-- > 0) {
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cout << count << endl;
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}
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std::this_thread::sleep_for(chrono::seconds(3));
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}
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int main() {
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thread t1(run, 10);
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cout << "main()" << endl;
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t1.detach();
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if(t1.joinable())
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t1.detach();
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cout << "main() after" << endl;
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return 0;
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} |