X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:message-id:date:from:mime-version:to:subject
	:content-type:content-transfer-encoding; q=dns; s=default; b=k9u
	HXPiR2LJg9WdYmBi8LzH5VpAF7R6S99MF4irseJMZL2UK7PM3x2M+3PFbQxbEEIk
	Tef1+TKMRqwuAjvElnRU3d2oRY5/lvcWgk6THMyviVxfgRptR+WNJJgDs729cTYq
	FGlJGJDX9GVnjxEeJrLtnvPumdBlYa0YZESyrovA=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:message-id:date:from:mime-version:to:subject
	:content-type:content-transfer-encoding; s=default; bh=xFjV0xJ7D
	jGKS41nB8E9KZpP+UQ=; b=omP8PkyYDsWa0IyKCTIU35ARa3fX/6sgqOeUirtGy
	XLmo3ri0K/OKih8w6Go0brjn26w7zQAyzHqDQH14wq1iuxwJKAPn9Bojo9Os/+H1
	S2xUcMYquf9AjdTonON7Wl6oyXfoHvF8A+g+MvI4FDrW+2a/dySk7AMjgxJI7Nai
	8k=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
X-Spam-SWARE-Status:	No, score=-2.8 required=5.0 tests=AWL,BAYES_20,KHOP_RCVD_UNTRUST,MAY_BE_FORGED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_NO,RP_MATCHES_RCVD,SPF_NEUTRAL autolearn=ham version=3.3.2
Message-ID:	<520FC3DC.4010700@cs.utoronto.ca>
Date:	Sat, 17 Aug 2013 14:41:32 -0400
From:	Ryan Johnson <ryan DOT johnson AT cs DOT utoronto DOT ca>
User-Agent:	Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130801 Thunderbird/17.0.8
MIME-Version:	1.0
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	emacs-nox hogs CPU if backgrounded during compile

Hi all,

The following STC causes emacs-nox to peg a CPU indefinitely. Emacs 
remains responsive, but C-c C-k doesn't kill the compile; you have to 
exit emacs to remove the "Compiling" status. Killing the buffer or 
starting a new compile offers to kill the offending process, but doesn't.

Attaching gdb shows an endless loop inside 
kernelbase.dll!RaiseException, but provides no other clues that I could see.

1. emacs-nox -Q
2. M-x compile
3. C-a C-k sleep 1; echo hi
4. ^Z (before the sleep finishes)
5. fg (after the sleep finishes)

I don't know if this is related to limited pipe buffering, but I don't 
think so: it has always worked in the past, and the the 3-4 bytes 
required to buffer up "hi\n" is hardly onerous.

$ uname -a
CYGWIN_NT-6.1 ryan-laptop-v02 1.7.24(0.269/5/3) 2013-08-15 11:59 x86_64 
Cygwin

$ cygcheck -cd
bash                      4.1.11-1
cygwin                    1.7.24-1
emacs                     24.3-5
mintty                    1.2-beta1-1

Ryan

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -