GNU bug report logs - #8869
Unjustified selection time-out

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From: Chong Yidong <cyd <at> stupidchicken.com>
To: Jan Djärv <jan.h.d <at> swipnet.se>
Cc: "8869 <at> debbugs.gnu.org" <8869 <at> debbugs.gnu.org>, David De La Harpe Golden <david <at> harpegolden.net>
Subject: bug#8869: Unjustified selection time-out
Date: Mon, 20 Jun 2011 10:57:34 -0400

Jan Djärv <jan.h.d <at> swipnet.se> writes:

> The problem is not calling select with a ong timeout, the problem is
> not checking if there is queued events and handling them before
> entering select.
>
> Checking Emacs as I run it, select is usually enetered with a timeout
> betweeen 10 and 15 seconds, so the potential for this happening is
> great.

But the selection request from the other X client can arrive at any
time, not necessarily before we enter the select.  If the front part of
wait_reading_process_output executes very quickly, we'll enter the
select before a response is ready, in which case Emacs will wait the
entire 20 seconds if no other input is available.

Other than reducing the select timeout, what solution is there?

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