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gh-99113: Make Sure the GIL is Acquired at the Right Places #104208

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Merged
ericsnowcurrently merged 7 commits into from
May 6, 2023
Merged

gh-99113: Make Sure the GIL is Acquired at the Right Places #104208

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ca1f78e
Add _PyEval_AcquireLock().
ericsnowcurrently Apr 10, 2023
c5d3b2c
Add _PyThreadState_SwapNoGIL().
ericsnowcurrently Apr 10, 2023
2404310
Acquire the GIL when not owned.
ericsnowcurrently Apr 10, 2023
85702ae
Fix a typo.
ericsnowcurrently May 6, 2023
3cc9dc3
Do not release the GIL when not necessary.
ericsnowcurrently May 6, 2023
3104796
Make sure the GIL is held by the current thread in _PyEval_InitGIL().
ericsnowcurrently May 6, 2023
56064c7
Release the GIL after swapping thread states.
ericsnowcurrently May 6, 2023
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Add _PyEval_AcquireLock().
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@ericsnowcurrently
ericsnowcurrently committed May 5, 2023
commit ca1f78e8a17759157df576b410d3a61e807aa307
1 change: 1 addition & 0 deletions Include/internal/pycore_ceval.h
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Expand Up @@ -100,6 +100,7 @@ extern int _PyEval_ThreadsInitialized(void);
extern PyStatus _PyEval_InitGIL(PyThreadState *tstate, int own_gil);
extern void _PyEval_FiniGIL(PyInterpreterState *interp);

extern void _PyEval_AcquireLock(PyThreadState *tstate);
extern void _PyEval_ReleaseLock(PyThreadState *tstate);

extern void _PyEval_DeactivateOpCache(void);
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8 changes: 8 additions & 0 deletions Python/ceval_gil.c
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Expand Up @@ -609,9 +609,17 @@ PyEval_ReleaseLock(void)
drop_gil(ceval, tstate);
}

void
_PyEval_AcquireLock(PyThreadState *tstate)
{
_Py_EnsureTstateNotNULL(tstate);
take_gil(tstate);
}

void
_PyEval_ReleaseLock(PyThreadState *tstate)
{
_Py_EnsureTstateNotNULL(tstate);
struct _ceval_state *ceval = &tstate->interp->ceval;
drop_gil(ceval, tstate);
}
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