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

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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.
This commit is contained in:
Victor Stinner 2023-09-08 11:50:46 +02:00 • committed by GitHub
parent b0edf3b98e
commit f63d37877a
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4 changed files with 35 additions and 20 deletions
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18
Python/pystate.c
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@ -2890,6 +2890,24 @@ _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