Keep Track of Where Each Python Thread Was Started

Feature or enhancement

Proposal:

Debugging threads can be tricky. One thing that could sometimes help would be knowing where Thread.start() was called. We could achieve this by capturing the traceback of the call and attaching it to the thread. We probably wouldn't want to keep the actual traceback, due to how that would leak all the frames, etc. Instead, we'd probably want to use traceback.TracebackSummary or perhaps even something more lightweight. (FYI, there are other places where such a lightweight traceback snapshot would be useful.)

FWIW, the same sort of tracking might be helpful for coroutines (asyncio), though this is partly addressed by https://github.com/python/cpython/pull/124640.

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

先阅读 Thread.start() 入口点和 traceback.TracebackSummary，以了解提议的捕获和存储边界。与 threading 维护者确定设计，然后添加测试覆盖，展示线程会记录其启动位置，同时不会保留活动的 traceback 帧。