DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=Bfw/k/dCBYdWi2+QwVN5Al9hbKtzPh666nFYHDdXV+aMM1tMng5jh
	pzGSYWlfF4SYPTI/Nb/PbFpCZ7d/7QH1wbMntzOZOcl5yjzUkhbnmz9VBsKon/CB
	Bcn0etXj9ofuXG8yYGDd2XanmgU8V7l4Z3dmwaCA9VRBbI3qUx7W9E=
Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm
Sender: cygwin-owner@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
Date: Sun, 18 Aug 2013 00:53:42 -0400
From: Christopher Faylor <cgf-use-the-mailinglist-please@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: emacs-nox hogs CPU if backgrounded during compile
Message-ID: <20130818045342.GA1639@ednor.casa.cgf.cx>
Reply-To: cygwin@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
References: <520FC3DC.4010700@cs.utoronto.ca>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <520FC3DC.4010700@cs.utoronto.ca>
User-Agent: Mutt/1.5.20 (2009-06-14)

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.

cgf

--
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