Experimental Physics and
Industrial Control System

Eric Norum <[email protected]> · Wed, 29 Sep 2010 12:48:07 -0700

On Sep 29, 2010, at 12:41 PM, Tim Mooney wrote:
>> 
>>   
> This is what I meant by "reallocate".  I was imagining allocating the current RPCL
> size at record init (unless a calc expression already existed at that time that required
> more space), and from then on checking to ensure that RPCL is large enough when
> a new calc expression is written.  Reallocating every time doesn't seem necessary;
> I'd reallocate only if RPCL must increase.
> 
> I think fragmentation would not be a problem with an implementation like this, unless
> folks are just *hammering* on calc expressions with, say, stringout records.  As far as
> I know, I'm the only one who's at all likely to do something as  whacked out as that.

And even that wouldn't be a problem since at some point the RPCL field would have to reach a high-water mark and reallocations would cease.

> 
> In any case, I would  not have any problem with putting this off until after the upcoming
> release.  I don't detect an urgency great enough to merit changing the implementation twice.

-- 
Eric Norum
[email protected]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System