[issue4293] Thread Safe Py_AddPendingCall

[Kristján Valur Jónsson]

Kristján Valur Jónsson <kristjan at ccpgames.com> added the comment:

Right.
Isn't the best way to avoid it to block signals just while we pop the 
queue?  I'll see if python has a portable sigaction thing to do that.
Otherwise we'd have to start to mess with a "volatile busy" flag again 
and possibly introduce tricky race conditions.

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