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Tue Jan 10 19:27:02 CET 2006 · https://mail.python.org/pipermail/python-dev/2006-January/059595.html

Hi,
I started hitting Py_FatalError("Invalid thread state for this thread") 
in pystate.c when a thread bootstraps since my upgrade to Python 2.4.2 
(was using 2.4.1 previously).
I'm embedding Python in C++, using multiple interpreters and threads.
I think the problem is that PyThreadState_Delete (which is used when I 
destroy thread states and interpreters) is not making the same clean up 
that PyThreadState_DeleteCurrent is doing:

if (autoTLSkey && PyThread_get_key_value(autoTLSkey) == tstate)
	PyThread_delete_key_value(autoTLSkey);

If a thread id is reused (and this often happens), and the previous 
thread used PyThreadState_Delete instead of PyThreadState_DeleteCurrent, 
  an old and invalid value for autoTLSkey is stored, and that is 
triggering the Py_FatalError.
Thanks.

-- 

Gabriel Becedillas
Developer
CORE SECURITY TECHNOLOGIES

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C1005AAC Buenos Aires - Argentina
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Showing content from https://mail.python.org/pipermail/python-dev/2006-January/059595.html below:

[Python-Dev] PyThreadState_Delete vs PyThreadState_DeleteCurrent