[issue4293] Thread Safe Py_AddPendingCall

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

Py_AddPendingCall is used inside signal handlers.
It seems that there is a (tiny) chance that a signal interrupts the
program inside Py_MakePendingCalls, while the pendinglock is held.
Py_AddPendingCall would try to acquire this lock again and deadlock.

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nosy: +amaury.forgeotdarc

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<http://bugs.python.org/issue4293>
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