Re: ? cffi

On 2010-10-02, at 07:24 , Chun Tian (binghe) wrote:

> Hi, James
>
> I have to admit, I cannot fully understand your patch.

that's ok. i don't either.

> But I made a patch from your work, to make it being able to be part  
> of CFFI, and sent to CFFI developers. I hope when more and more  
> compatibility layers are fixed for MCL, some important packages  
> (based on CFFI, like IOlib) could also run in MCL.
>
> --binghe
>
> 在 2010-9-28，06:41， james anderson 写道：
>
>> good morning;
>>
>> i have worked out enough of a cffi-mcl to be able to accomplish  
>> the immediate goal - to use the cl-zmq zeromq ffi binding.[1]
>> in case someone wants to carry it further, it's posted along with  
>> a mcl-compatible zmq version,[2] which eliminates un-ported  
>> dependencies.
>>
>> ---
>> [1] : http://repo.or.cz/w/cl-zmq.git
>> [2] : http://github.com/lisp/de.setf.zeromq
>>
>> On 2010-09-22, at 08:29 , Chun Tian (binghe) wrote:
>>
>>> 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?
>>>>>>
>>>>>>
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