Light-City
35 lines
678 B
C++
35 lines
678 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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* 一旦线程开始，我们要想等待线程完成，需要在该对象上调用join()
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* 双重join将导致程序终止
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* 在join之前我们应该检查显示是否可以被join,通过使用joinable()
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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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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.join();
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if (t1.joinable()) {
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t1.join();
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}
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cout << "main() after" << endl;
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return 0;
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} |