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Re: Emacs locks up

From: Joe Riel
Subject: Re: Emacs locks up
Date: Sun, 20 Jun 2021 09:05:20 -0700

On Sun, 20 Jun 2021 09:40:27 -0400
Stefan Monnier via Users list for the GNU Emacs text editor 
<> wrote:

> Joe Riel [2021-06-19 14:15:22] wrote:
> > I've written a debugger controlled by Emacs.  It uses make-network-process
> > to communicate with a client over TCP.  Works fine on linux and Windows.
> > However, when running the client in Windows 10 in virtualbox, with Emacs
> > running on the host system (linux), occasionally Emacs locks up.
> >
> > When that occurs I have to kill Emacs---it is otherwise unresponsive.  
> > Have no good idea how to fix or debug this.  Just being able to restore 
> > Emacs 
> > without killing it would be useful.  Any suggestions are appreciated.  
> You might like to try `kill -USR2` which may(!) bring Emacs back to life
> and give you a Lisp backtrace of where it's stuck.
> If that doesn't work, you'll need to attach to the process with
> a debugger to get the C level backtrace.


`kill -SIGUSR2` did restore emacs, which will be a big help.

Joe Riel

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