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[3.11] gh-104690: thread_run() checks for tstate dangling pointer (#109056) (#109134)

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gh-104690: thread_run() checks for tstate dangling pointer (#109056)

thread_run() of _threadmodule.c now calls
_PyThreadState_CheckConsistency() to check if tstate is a dangling
pointer when Python is built in debug mode.

Rename ceval_gil.c is_tstate_valid() to
_PyThreadState_CheckConsistency() to reuse it in _threadmodule.c.

(cherry picked from commit f63d37877a)
This commit is contained in:
Victor Stinner 2023-09-08 13:10:33 +02:00 • committed by GitHub
parent 9dd28d2da9
commit b55cf2c2d8
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5 changed files with 37 additions and 26 deletions
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18
Python/pystate.c
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@ -2237,6 +2237,24 @@ _PyThreadState_PopFrame(PyThreadState *tstate, _PyInterpreterFrame * frame)
}
#ifndef NDEBUG
// Check that a Python thread state valid. In practice, this function is used
// on a Python debug build to check if 'tstate' is a dangling pointer, if the
// PyThreadState memory has been freed.
//
// Usage:
//
// assert(_PyThreadState_CheckConsistency(tstate));
int
_PyThreadState_CheckConsistency(PyThreadState *tstate)
{
assert(!_PyMem_IsPtrFreed(tstate));
assert(!_PyMem_IsPtrFreed(tstate->interp));
return 1;
}
#endif
#ifdef __cplusplus
}
#endif