Stuck with a strange emacs / openmcl problem

Stuck with a strange emacs / openmcl problem

[Fabrice Popineau]

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Emacs 24.4 W32/W64

I'm trying to run Clozure Common Lisp under Emacs / Slime.
Slime lauches CCL and starts the Swank server.
When the process is started by Emacs, I get an error with this backtrace :

? ;Loading #P"c:/Home/.emacs.d/vendor/slime/swank-loader.lisp"...
> Error: Le fournisseur de services demandé n’a pas pu être chargé ou
initialisé.  (error #10106) during socket creation operation in socket
> While executing: SOCKET-ERROR, in process listener(1).
> Type :POP to abort, :R for a list of available restarts.
> Type :? for other options.
1 > :b
 (223996E8) : 0 (SOCKET-ERROR NIL "socket" 10106 NIL) 1133
 (22399750) : 1 (MAKE-TCP-SOCKET :CONNECT :PASSIVE :LOCAL-PORT 0
:LOCAL-HOST "127.0.0.1" :REUSE-ADDRESS T :BACKLOG 5) 429
 (223997D8) : 2 (MAKE-SOCKET :CONNECT :PASSIVE :LOCAL-PORT 0 :LOCAL-HOST
"127.0.0.1" :REUSE-ADDRESS T :BACKLOG 5) 965

The same thing works if I run OpenCL from the console.
How the fact that the process is run from Emacs could
result in an error from make-tcp-socket ?
Conflict with the winsock2 dll which is loaded by both process ?

I have tried many combinations of CCL and emacs :
- Emacs 24.4 32 bits (GNU version)
- Emacs 24.4 64 bits (my version)
- OpenCL 64 bits (official 1.10 version)
- OpenCL 64 bits (compiled by me with the same toolchain used to compile
Emacs)
- OpenCL 32 bits

I couldn't find a working version. Any idea on how to hunt this ?

Best regards,

-- 
Fabrice

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Re: Stuck with a strange emacs / openmcl problem

[Eli Zaretskii]

> From: Fabrice Popineau <fabrice.popineau@gmail.com>
> Date: Wed, 3 Dec 2014 23:32:34 +0100
> 
> Emacs 24.4 W32/W64
> 
> I'm trying to run Clozure Common Lisp under Emacs / Slime.
> Slime lauches CCL and starts the Swank server.
> When the process is started by Emacs, I get an error with this backtrace :
> 
> ? ;Loading #P"c:/Home/.emacs.d/vendor/slime/swank-loader.lisp"...
> > Error: Le fournisseur de services demandé n’a pas pu être chargé ou
> initialisé. (error #10106) during socket creation operation in socket

For French-challenged people, this message in English means "The
requested service provider could not be loaded or initialized."

> > While executing: SOCKET-ERROR, in process listener(1).
> > Type :POP to abort, :R for a list of available restarts.
> > Type :? for other options.
> 1 > :b
> (223996E8) : 0 (SOCKET-ERROR NIL "socket" 10106 NIL) 1133
> (22399750) : 1 (MAKE-TCP-SOCKET :CONNECT :PASSIVE :LOCAL-PORT 0 :LOCAL-HOST
> "127.0.0.1" :REUSE-ADDRESS T :BACKLOG 5) 429
> (223997D8) : 2 (MAKE-SOCKET :CONNECT :PASSIVE :LOCAL-PORT 0 :LOCAL-HOST
> "127.0.0.1" :REUSE-ADDRESS T :BACKLOG 5) 965
> 
> The same thing works if I run OpenCL from the console.
> How the fact that the process is run from Emacs could 
> result in an error from make-tcp-socket ?
> Conflict with the winsock2 dll which is loaded by both process ?

Does this happen in "emacs -Q"?  Do you have an emacs-server running?

> I have tried many combinations of CCL and emacs :
> - Emacs 24.4 32 bits (GNU version)
> - Emacs 24.4 64 bits (my version)
> - OpenCL 64 bits (official 1.10 version)
> - OpenCL 64 bits (compiled by me with the same toolchain used to compile Emacs)
> - OpenCL 32 bits
> 
> I couldn't find a working version. Any idea on how to hunt this ?

If "emacs -Q" shows the same problem, I'd suggest using SysInternals
tools to find what exactly happens and why.  ProcessExplorer and
ProcessMonitor come to mind.

Re: Stuck with a strange emacs / openmcl problem

[Fabrice Popineau]

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>
>
> If "emacs -Q" shows the same problem, I'd suggest using SysInternals
> tools to find what exactly happens and why.  ProcessExplorer and
> ProcessMonitor come to mind.
>

Thanks.

Here is what process explorer shows about the process environment :

[image: Images intégrées 1]

It seems to confirm this diagnostic (found with Google, same symptoms,
different context) about the 10106 error :
" On Windows, if the environment is not copied the SYSTEMROOT environment
variable won't be available and PHP will have problems loading Winsock."

So it seems that OpenMCL is run without inheriting any environment, which
is not good.
I don't see (yet) why the environment is not inherited.

Fabrice

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Re: Stuck with a strange emacs / openmcl problem

[Eli Zaretskii]

> From: Fabrice Popineau <fabrice.popineau@gmail.com>
> Date: Thu, 4 Dec 2014 10:45:30 +0100
> Cc: openmcl-devel <openmcl-devel@clozure.com>,
> 	Emacs developers <emacs-devel@gnu.org>
> 
> It seems to confirm this diagnostic (found with Google, same symptoms,
> different context) about the 10106 error :
> " On Windows, if the environment is not copied the SYSTEMROOT environment
> variable won't be available and PHP will have problems loading Winsock."
> 
> So it seems that OpenMCL is run without inheriting any environment, which is
> not good.
> I don't see (yet) why the environment is not inherited.

Can you describe how does Emacs invoke OpenMCL, exactly?  IOW, with
which Emacs command it is invoked, does the invocation go through a
shell (and if so, which shell), etc.

Re: Stuck with a strange emacs / openmcl problem

[Fabrice Popineau]

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>
> Can you describe how does Emacs invoke OpenMCL, exactly?  IOW, with
> which Emacs command it is invoked, does the invocation go through a
> shell (and if so, which shell), etc.
>

Problem closed.

OpenMCL is started by comint-exec. The process-env variable was trashed by
a spurious Slime configuration variable of mine.

You can actually do :

(let ((process-environment (append "foo=bar" process-environment)))
  process-environment)
(102 111 111 61 98 97 114
"TEXINPUTS=.;c:/Home/.emacs.d/elpa/auctex-11.88/latex;" ...

:-( I'm not sure if something can be done at the emacs level to check that
this sensitive variable is not destroyed.

For the record, it it useful to know that this 10106 winsock error relates
to SYSTEMROOT environment variable being not defined.

Once the environment is properly passed to comint-exec, everything works as
expected.

Fabrice

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Re: Stuck with a strange emacs / openmcl problem

[Stefan Monnier]

> (let ((process-environment (append "foo=bar" process-environment)))
>   process-environment)
> (102 111 111 61 98 97 114
> "TEXINPUTS=.;c:/Home/.emacs.d/elpa/auctex-11.88/latex;" ...

> :-( I'm not sure if something can be done at the emacs level to check that
> this sensitive variable is not destroyed.

We definitely could degrade more gracefully: we should signal an
error when faced with a process-environment that is not a list of strings.


        Stefan