General talk about software patterns

[Andre Benassi <ralph_malph AT yahoo.com>]

Hi Kencho,

Thanks for your reply.  I am still learning  the
patterns, so I'll take a close look at the patterns
you mentioned.  

The problem is not that we have limited memory, but
that we are not allowed to use dynamically allocated
memory (no heap).  I have envisioned the use of
statically created objects in the place of dynamically
created ones, and I just wanted to make sure that it
made sense to do it that way in light of how the
patterns are implemented.  It seems like I see a lot
of dynamic memory being allocated in the examples of
the books I have read (GoF, Head First DP), but I now
know that it is not usually a requirement but rather a
convenience or merely the "standard".  There doesn't
seem to be much consideration for real-time systems in
the books I read, and most of them use Java, which is
right out for me.

Thanks again,

Andre
--- Kencho san 
<kenchoweb AT hotmail.com>
 wrote:
> I'm not sure what's your problem, but I'll try to
> answer.
> 
> Almost any non-creational pattern can be aplied
> without dynamic memory 
> allocation, for instance the template method, state
> pattern, facade, 
> adapter... all of them can make use of
> composition-like relationships rather 
> than reference relationships (note that reference
> doesn't mean dynamic 
> memory allocation, but usually involves it)
> 
> If your problem is about design patterns helping you
> avoid dynamic memory 
> allocation (you have space for a maximum amount of
> objects and can't waste 
> time or memory to store more...), I would suggest
> taking a look to the 
> Object Pool pattern, which is a very clever way to
> reuse already existing 
> objects instead of creating and destroying them
> constantly
> 
> Hope that helps
> 
> >Hello all, looking at archives I'm not sure how
> >"alive" this list is, but someone out there might
> be
> >listening.
> >
> >I'm interested in people's opinions as to whether
> >design patterns would be useful if you could not
> >dynamically allocate memory.
> >
> >I am new to patterns and find them quite
> interesting.
> >I am considering putting in some effort to
> comprehend
> >them, but my projects at work include embedded
> >safety-critical real-time systems, and one of the
> >things that we do not use is dynamic memory
> >allocation.
> >
> >If anyone has an opinion as to whether I should
> delve
> >into patterns for this type of software (i.e. you
> have
> >considered doing them and/or done them in similar
> >systems before) I'd be interested to hear it.
> >
> >Thanks!
> >
> >
> >
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>
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> 
> 
> 


                
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