RE: Callbacks from C threads into Lisp

 

> -----Original Message-----
> From: owner-lisp-hug@lispworks.com 
> [mailto:owner-lisp-hug@lispworks.com] On Behalf Of John Pallister
> Sent: Friday, November 03, 2006 5:31 AM
> To: lisp-hug@lispworks.com
> Subject: Callbacks from C threads into Lisp
> 
> 
> I've coded up one of the sample C programs in Lisp using 
> fli:define-foreign-callable "stream-callback" and 
> fli:make-pointer :symbol-name "stream-callback", but when I 
> run it as an .EXE and the callback is called, I get:
> 
>    Failed to find stack-no 578 stack 1c8fe70
>    Stack dump
>    [16 lines of stack data]


Use sys:setup-for-alien-threads?

>From readme-5-0.pdf:

12.6.17 Foreign callbacks from unknown threads On Windows, Mac OS X, Linux and FreeBSD, foreign code can now call into Lisp in any thread, including those that LispWorks did not create.
On Windows the new function sys:setup-for-alien-threads sets up Lisp- Works to handle calls (via foreign callables) from "alien" threads, that is threads that LispWorks did not start. This setup happens automatically in LispWorks DLLs, but if there is a call into a LispWorks executable from an alien thread before sys:setup-for-alien-threads is called, the effect is unpredictable.



Eivind