[Python-Dev] Testing Socket Timeouts patch 1519025 (original) (raw)

Tony Nelson tonynelson at georgeanelson.com
Mon Jul 31 01:23:23 CEST 2006

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.

TonyN.:' <mailto:tonynelson at georgeanelson.com> ' <http://www.georgeanelson.com/>

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