Comments on: Object Pool class

By: David Lance

David Lance — Wed, 01 Apr 2009 21:13:07 +0000

This is an interesting idea, but does it worry anyone else about being a potentially huge memory leak? I’m thinking EJB when I hear object pools which regulate the number of pooled objects. That would be a nice addition to this.

By: Minh Ha

Minh Ha — Wed, 11 Mar 2009 08:35:06 +0000

This object pool pattern is very straightforward, not much variation in implementation. It’s a good example.

By: Ben

Ben — Tue, 10 Mar 2009 18:34:35 +0000

yes an example would be nice because I just don’t see how it functions…but the idea is good!!

By: TroyWorks

TroyWorks — Fri, 05 Dec 2008 03:57:13 +0000

Bummer about apply not working with constructors, I wonder what they were thinking?

I decided to adapt your construct class and use the ..rest property instead.
e.g.
http://code.google.com/p/troyworks/source/browse/trunk/AS3/dev/src/com/troyworks/util/new2.as

By: Frederic Gascon

Frederic Gascon — Tue, 02 Dec 2008 05:26:36 +0000

I use Objects pools too, but I implemented it in a different way. I putted the pool in the created object. This way you can use the constructor. I use linked stack for the pool. This can be added to any class with little changes.

package{
  public class Poolable{

    public var userData:*;
    private var next:Poolable;
    private static var first:Poolable;

    public function Poolable(){
      trace("object creation!");
    }

    public function recycle():void{
      if(first==null){
        first = this;
      }else{
        this.next = first;
        first = this;
      }
    }

    public static function getObject(data:*):Poolable{
      var poolable:Poolable;
      if(first==null){
        poolable = new Poolable();
      }else{
        poolable = first;
        first = first.next;
      }
      poolable.userData = data;
      return poolable;
    }
  }
}

By: richard

richard — Fri, 17 Oct 2008 07:26:23 +0000

Unfortunately there’s no way to use apply with a constructor.

By: Dru Kepple

Dru Kepple — Thu, 16 Oct 2008 23:33:37 +0000

Hmm, very interesting! Too bad I’m already 80% of the way through a project where this could be really useful; a little late to do too much with it now. In the future, though!

One question: I noticed that in the construct method, you’re doing a big switch to check how many arguments you have coming in. Is there any way to use apply with a constructor? Might be more flexible, but maybe that doesn’t work.

By: delizade

delizade — Tue, 14 Oct 2008 22:08:40 +0000

hi Richard,

it is strange idea for me. if you can put an example for that it will be great.

regards