“主”的ID线程在c ++ [英] id of "main" thread in c++

问题描述

有没有办法在c ++获得主程序线程的ID？

Is there a way in c++ to get the id of the "main" program thread?

我看到 std :: this_thread： ：get_id（）获取当前正在执行的线程的id，但我需要原始程序线程 main 的id。我没有看到任何函数来获得这个。

I see that std::this_thread::get_id() gets the id of the currently executing thread but I need the id of the main, original program thread. I don't see any function to get this.

原因是我有一些非线程安全的内部函数，只能在应用程序的原始线程上调用所以要安全我想做： -

The reason is that I have some non thread safe internal functions that must only be called on the original thread of the application so to be safe I want to do :-

assert(std::this_thread::get_id() == std::main_thread::get_id());

但是当然不是一个函数，我看不到任何方式

But there of course isn't a function to do that, and I can't see any way to get that information.

推荐答案

您可以保存它，而 this_thread 仍然是原始的线程：

You could save it while this_thread is still the original thread:

std::thread::id main_thread_id;

int main() {
    main_thread_id = std::this_thread::get_id(); // gotcha!
    /* go on */
}

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