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gh-104341: Call _PyEval_ReleaseLock() with NULL When Finalizing the Current Thread #105109

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Merged
merged 7 commits into from
Jun 1, 2023
Merged

gh-104341: Call _PyEval_ReleaseLock() with NULL When Finalizing the Current Thread #105109

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5206f3d
Call _PyEval_ReleaseLock() with NULL when finalizing the current thread.
ericsnowcurrently May 30, 2023
db6d7ac
Temporarily adjust tstate->_status.cleared during interpreter_clear().
ericsnowcurrently May 30, 2023
a374f48
Disable the broken asserts.
ericsnowcurrently May 30, 2023
432db0c
Add a note about the race in drop_gil().
ericsnowcurrently May 31, 2023
1280e0d
Fix a typo.
ericsnowcurrently May 31, 2023
cc1f2fe
Clarify a comment.
ericsnowcurrently May 31, 2023
b64b299
minor comment typo fix.
gpshead Jun 1, 2023
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Disable the broken asserts.
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@ericsnowcurrently
ericsnowcurrently committed May 30, 2023
commit a374f48ea809f5c279cdd3e154dbf9307417c202
4 changes: 2 additions & 2 deletions 4 Python/ceval_gil.c
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Original file line number Diff line number Diff line change
Expand Up @@ -280,7 +280,7 @@ drop_gil(struct _ceval_state *ceval, PyThreadState *tstate)
{
/* We shouldn't be using a thread state that isn't viable any more. */
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This comment is cryptic here. It doesn't say why it's here nor in which situation the "non-viable thread state" occurs.

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I've clarified the comment.

// XXX It may be more correct to check tstate->_status.finalizing.
assert(tstate == NULL || !tstate->_status.cleared);
// XXX assert(tstate == NULL || !tstate->_status.cleared);

struct _gil_runtime_state *gil = ceval->gil;
if (!_Py_atomic_load_relaxed(&gil->locked)) {
Expand Down Expand Up @@ -356,7 +356,7 @@ take_gil(PyThreadState *tstate)
assert(tstate != NULL);
/* We shouldn't be using a thread state that isn't viable any more. */
// XXX It may be more correct to check tstate->_status.finalizing.
assert(!tstate->_status.cleared);
// XXX assert(!tstate->_status.cleared);

if (tstate_must_exit(tstate)) {
/* bpo-39877: If Py_Finalize() has been called and tstate is not the
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