Object Pool class

10 Comments add your own

• hi Richard,

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

  regards

  delizade  |  14th October 2008 at 22:08

• 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.

  Dru Kepple  |  17th October 2008 at 00:33

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

  richard  |  17th October 2008 at 08:26

• 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;
      }
    }
  }

  Frederic Gascon  |  2nd December 2008 at 05:26

• 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

  TroyWorks  |  5th December 2008 at 04:57

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

  Ben  |  10th March 2009 at 19:34

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

  Minh Ha  |  11th March 2009 at 09:35

• 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.

  David Lance  |  1st April 2009 at 22:13

• It’s very nice. however, if I call disposeObject many times to an object, this class pushes the same object to the pool. it could be problem. so I check whether the object which will be disposed is in the pool or not. What do you think about it? very thanks.

  Jack Koo  |  18th August 2010 at 07:07

• [...] http://www.richardlord.net/blog/object-pool-class [...]

  ?ZZ?AS3 ??? ?? | ??? ? blog  |  22nd August 2010 at 13:59

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