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std::jthread::detach

来自cppreference.com
< cpp‎ | thread‎ | jthread

 
 
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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*this 不再占有任何线程。

参数

(无)

返回值

(无)

后条件

joinablefalse

异常

joinable() == false 或出现任何错误则为 std::system_error

示例

#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 standard (ISO/IEC 14882:2020):
  • 32.4.3.2 Members [thread.jthread.mem]

参阅

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