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Re: the state of the concurrency branch

From: Eli Zaretskii
Subject: Re: the state of the concurrency branch
Date: Thu, 29 Aug 2013 18:10:02 +0300

> From: Tom Tromey <address@hidden>
> Cc: address@hidden, address@hidden, address@hidden
> Date: Wed, 28 Aug 2013 21:54:53 -0600
> >> . Will the handling of SIGCHLD be thread-specific or global?  IOW, if
> >> a thread fires up a subprocess, which exits while another thread is
> >> running, which thread(s) will get the signal?  If the signal
> >> arrives at some other thread, how will that thread know to handle
> >> it, if it doesn't watch the corresponding fd's?
> Eli> Please answer this question, if you can: I need the answer to analyze
> Eli> what, if any, changes are needed in how Emacs on Windows handles
> Eli> process demise and emulates SIGCHLD.  Currently, we watch all of the
> Eli> subprocesses inside the 'pselect' call; the question is: should we
> Eli> only watch those of them that are relevant to the thread that calls
> Eli> 'pselect'.
> I have to look into it and I haven't found the time.
> I will try to get to it soon.

Thanks.  It's actually no more urgent than the other decisions to be
made before the concurrency branch is merged.

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