[slime-devel] [patch] closing connections with :fd-handler style

[Alexis Rondeau]

On 12/1/05, Alexis Rondeau <alexis.rondeau at gmail.com> wrote:
>
>
>
> On 12/1/05, Stephen Compall <s11 at member.fsf.org> wrote:
> > As far as I can tell, the only way a Swank connection object with
> > style :fd-handler will ever be closed due to EOF (with
> > close-connection) is if either the fd-handler implementation detects
> > the EOF state and knows how to destroy Swank connections, or a
> > condition is raised in the dynamic context of
> > with-reader-error-handler.  Looking at the topmost form
> in that
> > context, however, it can only happen if (listen socket) answers T, so
> > that the attempt to read can proceed and raise an eof-error, which
> > gets wrapped up, etc.
>
> > I modified process-available-input to test (listen socket) only after
> > calling FN at least once; after all, it always returns T when the
> > handler is called for a normal input state.  Without this patch, my
> > fd-handler backend gets into an endless loop calling the handler in
> > install-fd-handler (with the :eof state); with this patch, the socket
> > is closed, removed from *connections*, and from the fd-handler backend
> > properly.
>
>  Thank you for the patch, but still I get a new kind of error from sbcl
> which brings me in the same situation. I removed my ~/.slime directory
> before starting sbcl to make sure everything is reloaded and recompiled and
> reinstalled my emacs21-*. Still this is what happens on the host-lisp:
>
>  * (swank:create-server :port 4005 :dont-close t)
>  ;; Swank started at port: 4005.
>
>
>  * (swank:create-server :port 4005 :dont-close t)
>  ;; Swank started at port: 4005.
>
>  4005

>  Again, I can connect but on M-x slime-disconnect in emacs this happens now

>  * ;; Connection to Emacs lost.
>  ;; [end of file on #<SB-SYS:FD-STREAM for "a constant string" {985B171}>]
>
>  debugger invoked on a SIMPLE-ERROR in thread #<THREAD "auto-flush-thread"
> {9987D91}>:
>    #<SB-SYS:FD-STREAM for "a constant string" {985D5F1}> is closed.
>
>
> > Attached is the patch.
>
>  I patched my file but still more or less the same problem. I am on a 2.6.11
> kernel here, could this mean something?
>
> > --
> > Stephen Compall
> > http://scompall.nocandysoftware.com/blog
>
>  Thank you Stephen for your time and effort!
>
>  Alexis
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