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gh-115035: Mark ThreadHandles as non-joinable earlier after forking (#115042)

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This marks dead ThreadHandles as non-joinable earlier in
`PyOS_AfterFork_Child()` before we execute any Python code. The handles
are stored in a global linked list in `_PyRuntimeState` because `fork()`
affects the entire process.
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Sam Gross 2024-02-06 14:45:04 -05:00 • committed by GitHub
parent 71239d50b5
commit b6228b521b
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7 changed files with 50 additions and 41 deletions
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5
Lib/threading.py
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@ -949,7 +949,6 @@ class Thread:
# This thread is alive.
self._ident = new_ident
if self._handle is not None:
self._handle.after_fork_alive()
assert self._handle.ident == new_ident
# bpo-42350: If the fork happens when the thread is already stopped
# (ex: after threading._shutdown() has been called), _tstate_lock
@ -965,9 +964,7 @@ class Thread:
self._is_stopped = True
self._tstate_lock = None
self._join_lock = None
if self._handle is not None:
self._handle.after_fork_dead()
self._handle = None
self._handle = None
def __repr__(self):
assert self._initialized, "Thread.__init__() was not called"