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
	:references:in-reply-to:content-type:content-transfer-encoding;
	 q=dns; s=default; b=jwjtKIyw6Mz7QsnPAetvynOks1zz/iIkwIvbmDPOjqC
	zUTGiTZQNkjQRTY+kYL5xaKlm7iw5R7JB5VtxhGUtbWLQMyUbaMhOGi8yvywpD+m
	AccERw4EIyrf6gtWPSLkPM4Y4oL1ahuhWVIOI26kk6Al9TVYN2XJ9gBMuvDht8AI
	=
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
	:references:in-reply-to:content-type:content-transfer-encoding;
	 s=default; bh=2awDmcPgIrQRqvfNE27Q+r+B/Wk=; b=a7eLCWUbckE3341uH
	JS13As8fMnYrM4ujP3Wt6IAtDtHZQsXK7z2Pnt9mZ2wSLsMZOGWen+llg8TBKhsU
	u9nH/KoS1L/P1Fy5AYBfQ1xFjv0nMLWXkGpN/79c6K6Vqf65hm6FA9spYoFdY+cA
	MOh6d0YViCs8dSlf68pYhPY3SI=
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=-4.2 required=5.0 tests=AWL,BAYES_00,KHOP_RCVD_UNTRUST,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_NO,RP_MATCHES_RCVD,SPF_NEUTRAL autolearn=ham version=3.3.2
Message-ID: <52110E7E.4000105@cs.utoronto.ca>
Date: Sun, 18 Aug 2013 14:12:14 -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
Subject: Re: emacs-nox hogs CPU if backgrounded during compile
References: <520FC3DC DOT 4010700 AT cs DOT utoronto DOT ca> <20130818045342 DOT GA1639 AT ednor DOT casa DOT cgf DOT cx>
In-Reply-To: <20130818045342.GA1639@ednor.casa.cgf.cx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

On 18/08/2013 12:53 AM, Christopher Faylor wrote:
> On Sat, Aug 17, 2013 at 02:41:32PM -0400, Ryan Johnson wrote:
>> 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.
> I don't know if this trick works on 64-bit Cygwin or not but you could try:
>
> set $rsp=$rbp
> bt
>
> And, if you get something sensible try it on every thread.
(gdb) p $rbp
$5 = (void *) 0x16

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