[Vm-dev] [Cog] Proposal: get rid of checks if files should be regenerated

[Igor Stasenko]

On 29 June 2011 19:37, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>
>
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> On Wed, Jun 29, 2011 at 10:27 AM, Igor Stasenko <siguctua at gmail.com> wrote:
>>
>> Hello,
>>
>> just a proposal.
>> A full VMMaker sources generation under cog vm takes less than 1
>> minute, in fact even less:
>>
>> [ CogMacOSConfig generateWithSources ] timeToRun 24919
>
> You miss the point.  By not regenerating e.g. interp.h one avoids recompiling every file in the VM when one does a C compilation.  If every time one regenerates the CoInterpreter one also regenerates interp.h then all the files in the VM will be recompiled even though only CoInterpreter has changed and needs recompiling.  I build three VMs (production, assert, debug) for each of three platforms (Mac, WIndows, linux).  So avoiding regenerating unchanged header files turns out to be rater valuable.
> Make sense now?
>

Yes, when you build VM very often during development it makes sense.
Partly.. because building don't takes too much time either :)

>>
>> (so, in fact its 25 seconds)
>> this is including all plugins and cmake files!
>>
>> which makes me thinking that we could simplify code generation a lot
>> by removing unnecessary checks whether file(s) should be re-generated
>> or not.
>> Because it just adds a mess and unnecessary complexity into already
>> complex code.
>> What you think?
>>
>> --
>> Best regards,
>> Igor Stasenko AKA sig.
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>
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> --
> best,
> Eliot
>
>



-- 
Best regards,
Igor Stasenko AKA sig.