[issue19017] selectors: towards uniform EBADF handling

[Guido van Rossum]

Guido van Rossum added the comment:

Charles-Francois, sorry to add you back to the bug, but (a) I thought you had agreed to a compromise patch that restarts signals in most cases but not for select(), poll() etc.; (b) I may have found a flaw in the idea.

The flaw (if it is one) is related to Py_AddPendingCall(). This "schedules" a pending callback, mostly for signals, but doesn't AFAICT interrupt the mainthread in any way. (TBH, I only understand the code for Python 2.7, and in that version I'm sure it doesn't.)

So is this a flaw? I'm nor sure. Can you think about it?

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<http://bugs.python.org/issue19017>
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