If we unify named and numbered parameters, it might also make sense to 
have the parameter with the name "1" be the same as parameter #1.

Ken


On 5/2/2012 11:23 AM, Michael Haberler wrote:
> Ken,
>
> you're perfectly right.
>
> I'll update the note with a rundown of per-parameter, per-block, and global 
> memory and processing 'cost'. I guess I was carried away when I wrote up what 
> looks like a CS101 homework in style that eventually, all it needs to do is 
> fiddle a few bitmasks.
>
> It is tempting to unify handling of named and numbered parameters 'while at 
> it' because I dont really see a good reason to handle them different except 
> history, and handling of scope. Also, handling of parameter save and restore 
> - if that is a another static attribute, that's covered too with the same 
> static descriptor (or runtime attribute, if one were to support it for named 
> variables).
>
> Maybe the handling of scopes can be factored out such that parameter support 
> remains language-agnostic as long as lexical scoping is assumed; so the folks 
> doing a LISP interpreter to drive a machine might have to rework that part;)
>
> - Michael
>
> Am 02.05.2012 um 15:44 schrieb Kenneth Lerman:
>
>> Hi Michael,
>>
>> I like it.
>>
>> I take issues, though, with the final line: "the implementation cost is
>> low: two bit masks per block, one bit mask per parameter"
>>
>> I agree that the implementation cost (I assume you mean execution time)
>> is low, but it is higher than what you say. You leave out the time for
>> getters and setters. I would say the the execution time is low because
>> any increases in total execution time are O(n) where n is the number of
>> lines. Or said differently, any increase in execution time for a line is
>> a constant.
>>
>> Thanks for your work on this.
>>
>> Regards,
>>
>> Ken
>>
>> On 5/1/2012 4:14 PM, Michael Haberler wrote:
>>> on #linuxcnc-devel there's currently a discussion (mostly cradek and me in 
>>> the last few days) about a future linuxcnc design. In that context, 
>>> 'queuebusters' and the synchronization of interpreter state came up.
>>>
>>> I think I came up with a more elegant, flexible and language independent 
>>> solution to this issue than we currently have
>>>
>>> I've written up some thoughts here: 
>>> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?QueuebustersRevisited
>>>
>>> I'd appreciate any comments
>>>
>>> - Michael
>>>
>>>
>>>
>>>
>>>
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