[Python-Dev] Testing Socket Timeouts patch 1519025

[Tony Nelson]

At 11:42 PM +0200 7/30/06, Martin v. Löwis wrote:
>Tony Nelson schrieb:
>>> You can use GenerateConsoleCtrlEvent to send Ctrl-C to all processes
>>> that share the console of the calling process.
>[...]
>> Martin, your advice is usually spot-on, but I don't always understand it.
>> Maybe using it here is just complicated.
>
>This was really just in response to your remark that you couldn't
>find a way to send Ctrl-C programmatically. I researched (in
>the C library sources) how SIGINT was *generated* (through
>SetConsoleCtrlHandler), and that let me to a way to generate [one.]

Well, fine work there!

>I didn't mean to suggest that you *should* use GenerateConsoleCtrlEvent,
>only that you could if you wanted to.

Hmm.  Well, it would make the test possible on MSWindows as well as on OS's
implementing alarm(2).  If I figure out how to build Python on MSWindows, I
might give it a try.  I tried to get MSVC 7.1 via the .Net SDK, but it
installed VS 8 instead, so I'm not quite sure how to proceed.


>> I expect that
>> GenerateConsoleCtrlEvent() can be called through the ctypes module, though
>> that would make backporting the test to 2.4 a bit more difficult.
>
>Well, if there was general utility to that API, I would prefer exposing
>it in the nt module. It doesn't quite fit into kill(2), as it doesn't
>allow to specify a pid of the target process, so perhaps it doesn't
>have general utility. In any case, that would have to wait for 2.6.

A Process Group ID is the PID of the first process put in it, so it's sort
of a PID.  It just means a collection of processes, probably more than one.
It seems to be mostly applicable to MSWindows, and isn't a suitable way to
implement a form of kill(2).

I hope that the Socket Timeouts patch 1519025 can make it into 2.5, or
2.5.1, as it is a bug fix.  As such, it would probably be better to punt
the test on MSWindows than to do a tricky fancy test that might have its
own issues.
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