std::jthread::detach
来自cppreference.com
void detach(); |
(C++20 起) | |
从 jthread 对象分离执行线程,允许执行独立地持续。一旦该线程退出,则释放任何分配的资源。
调用 detach
后 *this 不再占有任何线程。
参数
(无)
返回值
(无)
后条件
joinable 为 false
异常
若 joinable() == false 或出现任何错误则为 std::system_error 。
示例
运行此代码
#include <iostream> #include <chrono> #include <thread> void independentThread() { std::cout << "Starting concurrent thread.\n"; std::this_thread::sleep_for(std::chrono::seconds(2)); std::cout << "Exiting concurrent thread.\n"; } void threadCaller() { std::cout << "Starting thread caller.\n"; std::jthread t(independentThread); t.detach(); std::this_thread::sleep_for(std::chrono::seconds(1)); std::cout << "Exiting thread caller.\n"; } int main() { threadCaller(); std::this_thread::sleep_for(std::chrono::seconds(5)); }
可能的输出:
Starting thread caller. Starting concurrent thread. Exiting thread caller. Exiting concurrent thread.
引用
- C++20 标准(ISO/IEC 14882:2020):
- 32.4.3.2 Members [thread.jthread.mem]
参阅
等待线程完成其执行 (公开成员函数) | |
检查线程是否可合并,即潜在地运行于平行环境中 (公开成员函数) |