[Vm-dev] VM Maker: VMMaker.oscog-eem.108.mcz

Igor Stasenko siguctua at gmail.com
Thu Jul 21 22:43:21 UTC 2011


On 22 July 2011 01:33, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>
>
>
> On Thu, Jul 21, 2011 at 3:29 PM, Igor Stasenko <siguctua at gmail.com> wrote:
>>
>> On 22 July 2011 02:04,  <squeak-dev-noreply at lists.squeakfoundation.org> wrote:
>> >
>> > Eliot Miranda uploaded a new version of VMMaker to project VM Maker:
>> > http://www.squeaksource.com/VMMaker/VMMaker.oscog-eem.108.mcz
>> >
>> > ==================== Summary ====================
>> >
>> > Name: VMMaker.oscog-eem.108
>> > Author: eem
>> > Time: 21 July 2011, 1:45:28 am
>> > UUID: 06af30e4-7c67-4259-88dc-8ee2a10499c4
>> > Ancestors: VMMaker.oscog-eem.107
>> >
>> > Nuke ReentrantFFIPlugin in favour of ThreadedFFIPlugin, using
>> > cppIf: COGMTVM to select threading-specific code.  This so that
>> > there only needs to be one SqueakFFIPrims.c for the reentrant
>> > (non-threaded) and threaded FFI plugins.  This is a much easier
>> > fix than somehow allowing the two files to exist side-by-side in
>> > the file system.
>> >
>> >
>>
>> :)
>> in cmake configs we dealt with this by simply including proper plugin class.
>> But indeed there's a lot of XyZFFIPlugins out there..
>
> You may have missed the point.  Both of these plugins emit a source file called src/vm/plugins/SqueakFFIPrims/SqueakFFIPrims.c sicne they are both different versions of the FFI plugin, one for a non-threaded VM, one for a threaded VM.  If I were to generate both of them at the same time one would overwrite the other.

Exactly. That's why i making sure to include only right plugin :)

> If I were to change the name of one of them then all the builds would be affected and have to be modified to choose a different source depending on whether COGMTVM=1 or COGMTVM=0.  [Note it was difficult enough to get the builds to choose either cointerp.c cointerpmt.c gcc3x-cointerp.c or gcc3x-cointerpmt.c].  So the easiest way to be able to select these different variants is to collapse them into one class and use cppIf: to choose between non-threaded and threaded code based on COGMTVM.

I know. But its a pity that nice and elegant inheritance scheme has to
be broken to serve pervasive needs of C :)

> HTH
>>
>> --
>> Best regards,
>> Igor Stasenko AKA sig.
>
>
>
> --
> best,
> Eliot
>
>



-- 
Best regards,
Igor Stasenko AKA sig.


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