From edi at agharta.de  Sun Aug 22 18:55:04 2004
From: edi at agharta.de (Edi Weitz)
Date: Sun, 22 Aug 2004 20:55:04 +0200
Subject: [cl-ppcre-devel] Re: freeze-type ing cl-ppcre?
In-Reply-To: <Pine.LNX.4.44.0408221014240.9746-100000@lcws.hpc.unm.edu> (Jim
	Prewett's message of "Sun, 22 Aug 2004 10:18:39 -0600 (MDT)")
References: <Pine.LNX.4.44.0408221014240.9746-100000@lcws.hpc.unm.edu>
Message-ID: <87r7pzf1fb.fsf@bird.agharta.de>

Hi Jim!

On Sun, 22 Aug 2004 10:18:39 -0600 (MDT), Jim Prewett <download at hpc.unm.edu> wrote:

> I was poking around the CMUCL optimizations page and came across the
> freeze-type declaration.
>
> I tried adding it to LoGS and it made a notable improvement.  I also
> tried adding it to CL-PPCRE and found that that seemed to help as
> well.
>
> Is this going to bite me?  Do the cl-ppcre types change ever?

I'm not familiar with FREEZE-TYPE. How did you use it and how did it
improve CL-PPCRE? Is this new in 19a?

Would you mind taking the rest of this exchange to the mailing list
(see Cc)? Thanks.

Cheers,
Edi.



From download at hpc.unm.edu  Mon Aug 23 13:36:46 2004
From: download at hpc.unm.edu (Jim Prewett)
Date: Mon, 23 Aug 2004 07:36:46 -0600 (MDT)
Subject: [cl-ppcre-devel] Re: freeze-type ing cl-ppcre?
In-Reply-To: <87r7pzf1fb.fsf@bird.agharta.de>
Message-ID: <Pine.LNX.4.44.0408230702310.10793-100000@lcws.hpc.unm.edu>



Hi Edi,

> I'm not familiar with FREEZE-TYPE. How did you use it and how did it
> improve CL-PPCRE? Is this new in 19a?

Apparently, yes it is new in 19a.  

I simply added the declaration:

(declaim (extensions:freeze-type regex seq alternation lookahead 
lookbehind repetition register standalone back-reference char-class str 
anchor everything word-boundary branch void))

* I just grepped for defclass to build this list of classes *

The CMUCL manual says this:

"The extensions:freeze-type declaration is a CMUCL extension that enables 
more efficient compilation of user-defined types by asserting that the 
definition is not going to change. This declaration may only be used 
globally (with declaim or proclaim). Currently freeze-type only affects 
structure type testing done by typep, typecase, etc."

My "benchmark" was really quick and dirty, so i'm not sure I trust the 
results.  :)  

Thanks Edi!,
Jim

-- 
James E. Prewett                 "everything that is, that was, was not enough"
Systems Team Leader                                                505.277.8210
Designated Security Officer                download at hpc.unm.edu Jim at Prewett.org
HPC Systems Engineer III @ HPC at UNM             OpenPGP key: pub  1024D/31816D93




From edi at agharta.de  Mon Aug 23 14:22:02 2004
From: edi at agharta.de (Edi Weitz)
Date: Mon, 23 Aug 2004 16:22:02 +0200
Subject: [cl-ppcre-devel] Re: freeze-type ing cl-ppcre?
In-Reply-To: <Pine.LNX.4.44.0408230702310.10793-100000@lcws.hpc.unm.edu> (Jim
	Prewett's message of "Mon, 23 Aug 2004 07:36:46 -0600 (MDT)")
References: <Pine.LNX.4.44.0408230702310.10793-100000@lcws.hpc.unm.edu>
Message-ID: <87y8k6lyt1.fsf@bird.agharta.de>

On Mon, 23 Aug 2004 07:36:46 -0600 (MDT), Jim Prewett <download at hpc.unm.edu> wrote:

> Apparently, yes it is new in 19a.  
>
> I simply added the declaration:
>
> (declaim (extensions:freeze-type regex seq alternation lookahead
> lookbehind repetition register standalone back-reference char-class
> str anchor everything word-boundary branch void))
>
> * I just grepped for defclass to build this list of classes *
>
> The CMUCL manual says this:
>
> "The extensions:freeze-type declaration is a CMUCL extension that
> enables more efficient compilation of user-defined types by
> asserting that the definition is not going to change. This
> declaration may only be used globally (with declaim or
> proclaim). Currently freeze-type only affects structure type testing
> done by typep, typecase, etc."
>
> My "benchmark" was really quick and dirty, so i'm not sure I trust
> the results.  :)

OK, from this description I suppose it's safe to add this to CL-PPCRE
because the class definitions don't change. You /might/ see a little
performance increase but only during scanner creation I guess.

Cheers,
Edi.



From download at hpc.unm.edu  Mon Aug 23 14:37:33 2004
From: download at hpc.unm.edu (Jim Prewett)
Date: Mon, 23 Aug 2004 08:37:33 -0600 (MDT)
Subject: [cl-ppcre-devel] Re: freeze-type ing cl-ppcre?
In-Reply-To: <87y8k6lyt1.fsf@bird.agharta.de>
Message-ID: <Pine.LNX.4.44.0408230836040.10937-100000@lcws.hpc.unm.edu>


That would explain my benchmark!  I was creating new scanners left and 
right!  (I dynamically generate regexps at run-time; the stuff i've been 
doing lately makes *a lot* of them :)

But, the speed-up is relatively minor. :)

Jim

On Mon, 23 Aug 2004, Edi Weitz wrote:

> On Mon, 23 Aug 2004 07:36:46 -0600 (MDT), Jim Prewett <download at hpc.unm.edu> wrote:
> 
> > Apparently, yes it is new in 19a.  
> >
> > I simply added the declaration:
> >
> > (declaim (extensions:freeze-type regex seq alternation lookahead
> > lookbehind repetition register standalone back-reference char-class
> > str anchor everything word-boundary branch void))
> >
> > * I just grepped for defclass to build this list of classes *
> >
> > The CMUCL manual says this:
> >
> > "The extensions:freeze-type declaration is a CMUCL extension that
> > enables more efficient compilation of user-defined types by
> > asserting that the definition is not going to change. This
> > declaration may only be used globally (with declaim or
> > proclaim). Currently freeze-type only affects structure type testing
> > done by typep, typecase, etc."
> >
> > My "benchmark" was really quick and dirty, so i'm not sure I trust
> > the results.  :)
> 
> OK, from this description I suppose it's safe to add this to CL-PPCRE
> because the class definitions don't change. You /might/ see a little
> performance increase but only during scanner creation I guess.
> 
> Cheers,
> Edi.
> 

-- 
James E. Prewett                 "everything that is, that was, was not enough"
Systems Team Leader                                                505.277.8210
Designated Security Officer                download at hpc.unm.edu Jim at Prewett.org
HPC Systems Engineer III @ HPC at UNM             OpenPGP key: pub  1024D/31816D93