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Re: gdb attach/detach kills the target process
- From: Igor Pechtchanski <pechtcha at cs dot nyu dot edu>
- To: cygwin at cygwin dot com
- Date: Thu, 19 Jun 2003 14:25:20 -0400 (EDT)
- Subject: Re: gdb attach/detach kills the target process
- Reply-to: cygwin at cygwin dot com
On Thu, 19 Jun 2003, Christopher Faylor wrote:
> 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.
Umm, yes, Corinna has mentioned this too. I don't work with WinXP, so I
didn't know about it. However, had the OP worked in WinXP, he wouldn't
have had the above problem in the first place, so I can assume he's
working in some other OS, and thus his problem is inherent in the API.
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