[3.13] gh-137400: Fix thread-safety issues when profiling all threads (gh-137518) (gh-137733)

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There were a few thread-safety issues when profiling or tracing all
threads via PyEval_SetProfileAllThreads or PyEval_SetTraceAllThreads:

* The loop over thread states could crash if a thread exits concurrently
  (in both the free threading and default build)
* The modification of `c_profilefunc` and `c_tracefunc` wasn't
  thread-safe on the free threading build.
(cherry picked from commit a10152f8fd)

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Sam Gross 2025-10-09 11:42:47 -04:00 • committed by GitHub

parent f6186a3709

commit 16d2e97cf3

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