Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/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
Date: Thu, 19 Jun 2003 14:14:41 -0400
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: gdb attach/detach kills the target process
Message-ID: <20030619181441.GA6540@redhat.com>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <u65n3hu5s DOT fsf AT gnu DOT org> <Pine DOT GSO DOT 4 DOT 44 DOT 0306181927330 DOT 22307-100000 AT slinky DOT cs DOT nyu DOT edu>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <Pine.GSO.4.44.0306181927330.22307-100000@slinky.cs.nyu.edu>
User-Agent: Mutt/1.4.1i

On Wed, Jun 18, 2003 at 07:33:38PM -0400, Igor Pechtchanski wrote:
>On 18 Jun 2003, Sam Steingold wrote:
>>run a process in a cygwin window, find out its PID, run gdb in another
>>window, attach to that process, then detach from it.  the target
>>process stops responding as soon as it is attached to.  detaching
>>changes nothing.  only after I exit gdb, I get the original window
>>responding, with the terminal in raw start (need to do "reset" in bash)
>>and the process that gdb attached to dead.
>>
>>I tested this on python and clisp.
>
>That's the way Windows debugging works -- once you attach to a process,
>detaching from it kills the process.  No way around it.  Furthermore,
>the process is killed using the Windows APIs, thus no signal ever
>reaches the process and no cleanup is performed.

That's not entirely true.  Detaching works ok on Windows XP.

cgf

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