[Seaside] Nuking objects when changing pages?

David Mitchell david.mitchell at gmail.com
Sun Feb 11 16:06:04 UTC 2007

 From a general Smalltalk perspective, I don't go helping the GC in the 
normal course of things. I have tuned Smalltalk apps, but not Seaside.

Just remove the pointer and let the GC clean up after me. Setting to nil 
works for instance variables, remove the key in a dictionary, or if it 
is a temporary, simply let it fall out of scope.

If I had some evidence from a profiling session that showed it was 
hurting, I'd consider it. I'd probably look at different GC settings 
before I started adding tweaks to my app.

Of course, I'd document the tune and make it easy to remove later 
(perhaps by adding a method call). A tune here could be the bottleneck 
there -- different VM, GC implementation, hardware, customer, etc.

Rick Flower wrote:

> Hi all.. I guess this is a question of style and garbage collection of 
> sorts..  I've got a shopping cart as I mentioned earlier in several 
> other email threads -- my question is what to do with the cart 
> contents (and the object itself) when the user changes to another page 
> thereby discarding what was in the cart (this cart does not work like 
> a cart at Amazon or whatever -- when you leave a specific order page 
> the cart is to be discarded).. Anyway, initially I was thinking that I 
> could just set my cart object to be "nil" and let the garbage 
> collector do its task -- but I'm wondering if its worth my time to do 
> a bit of manual cleanup to reduce the amount of work the GC has to 
> do.. Is it worth it and are there any pitfalls from going down that 
> path -- any alternatives that are better?
> Anyway -- I guess it's more of a general ST question as well..
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