Re: ? cffi

I've read these documents. MCL 4.0's FFI seems based on the function "define-entry-point" which then depends on "ppc-ff-call", both of them are still available in MCL 5.x, and the related MCL source code is "lib/deftrap.lisp", which was last modified in 2005.

However, I think "define-entry-point" is not the preferred way any more:

; Change log
;
; put back define-entry-point and things it depends on - though MCL doesn't use it users may
; ------ 5.2b2

I think CFFI people, if want to support MCL, should research "deftrap.lisp" and figure out the preferred way to do the work. But for me, a USOCKET maintainer, I'd like to use this interface directly to implement UDP networking, which was lack from OpenTransport.

--binghe

在 2010-9-22，13:30， james anderson 写道：

> there are two sources.
> 
> if you go to ftp.clozure.com, you will find the 5.2 release and a copy of the documentation for 4.0.
> i know of no revised documentation for 5.2. other than that, there is always the source.
> i believe 5.2 has a very different calling mechanism then 4.0, as it uses a different os x facility to manage foreign libraries.
> 
> the biggest '?' is turning off the gc for the dynamic extent of any foreign calls which pass lisp data. i do not know if that is possible in mcl, but it could be faked by moving the data to/from temporary external storage just to get it working.
> two little question marks are the data type size calculations and the call-back protocol.
> since the source is there, there's nothing stopping me from adapting the clozure-specific code to work in mcl.
> i was just hoping to avoid having to wrap my head around those bits.
> 
> 
> On 2010-09-22, at 04:45 , Chun Tian (binghe) wrote:
> 
>> Never know how to do FFI in Digitool MCL ... Where can I find some API documents?
>> 
>> --binghe
>> 
>> 在 2010-9-22，05:36， james anderson 写道：
>> 
>>> good morning;
>>> 
>>> has anyone ported cffi to mcl?
>>> 
>>> 
>>> _______________________________________________
>>> info-mcl mailing list
>>> [email protected]
>>> http://clozure.com/mailman/listinfo/info-mcl
>> 
>> _______________________________________________
>> info-mcl mailing list
>> [email protected]
>> http://clozure.com/mailman/listinfo/info-mcl
> 
> _______________________________________________
> info-mcl mailing list
> [email protected]
> http://clozure.com/mailman/listinfo/info-mcl

_______________________________________________
info-mcl mailing list
[email protected]
http://clozure.com/mailman/listinfo/info-mcl