[geos-devel] JTS/GEOS performance

[strk at refractions.net]

On Mon, Feb 07, 2005 at 09:17:04AM -0700, Chapman, Martin wrote:
> Mark,
> 
> Boost looks really nice.  Once you use smart pointers you'll never go
> back to dumb ones.  It almost makes C++ as elegant and simple as Java.
> 
> Martin

It might be worth switching, for the sake of port sanity.
Anyway, Coordinate copies are not our current bottleneck.

--strk;


> 
> -----Original Message-----
> From: Mark Coletti [mailto:mcoletti at gmail.com] 
> Sent: Monday, February 07, 2005 9:09 AM
> To: GEOS Development List
> Subject: Re: [geos-devel] JTS/GEOS performance
> 
> 
> On Mon, 31 Jan 2005 16:42:44 -0800, Chris G. Nicholas
> <cgn at globexplorer.com> wrote:
> > >  an enterprise api should have both smart pointers and ref-counting 
> > > available as an option.
>  
> > Martin is certainly correct that smart pointers, reference counting 
> > and garbage collection are all related.  But one has to decide if a 
> > geometry API and in-memory features are fundamentally multithreaded 
> > animals, what their persistence mechanisms are, and what happens when 
> > one thread does wierd things while others are interested in a 
> > particular feature.  [...]
> 
> > I would argue that reasonable assumptions, i.e. simple thread safety 
> > and *s*p*e*e*d*, are
> > much more preferrable than exotic special cases. Straightforward
> readers/writer locks 
> > should suffice; (not sure what the pthread equivalent is, but on
> Solaris it is rwlock(3thr) ) .
> 
> The Boost C++ Library offers reference-counting smart pointers that have
> built-in thread locking.  See shared_ptr class at http://boost.org/.
> The Boost library also offers a large number of other useful classes,
> functions, and macros.
> 
> Cheers,
> 
> Mark
> -- 
> I'm taking reality in small doses to build immunity.
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