cpython/Tools/tsan
Sam Gross e69d068ad0
gh-117657: Fix race involving GC and heap initialization (#119923)
The `_PyThreadState_Bind()` function is called before the first
`PyEval_AcquireThread()` so it's not synchronized with the stop the
world GC. We had a race where `gc_visit_heaps()` might visit a thread's
heap while it's being initialized.

Use a simple atomic int to avoid visiting heaps for threads that are not
yet fully initialized (i.e., before `tstate_mimalloc_bind()` is called).

The race was reproducible by running:
`python Lib/test/test_importlib/partial/pool_in_threads.py`.
2024-06-04 09:42:13 -04:00
..
suppressions_free_threading.txt gh-117657: Fix race involving GC and heap initialization (#119923) 2024-06-04 09:42:13 -04:00
supressions.txt gh-117657: Log TSAN warnings to separate files and archive them (#118747) 2024-05-10 17:54:23 -04:00