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POFlex 3 Memory leak issue
 

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    <p>We have a huge flex applications using multiple modules. There is a huge memory leak problem over prolonged usage of loading and unloading modules.</p> <p>Based on all the search and different articles I understand that I need to clean up objects on unload, remove event listeners, stop timers and dispose any references.</p> <p>I started this by picking up one component at a time within one of the module.</p> <p>Here is how this is structured.</p> <p>There is one parent application which loads a module, which has multiple views. The component is defined in mxml and is referenced in the mxml module in a view stack.</p> <p>This mxml component is a VBox with event listeners added as-</p> <pre><code>&lt;mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml" paddingTop="10" paddingLeft="10" paddingBottom="10" paddingRight="10" creationComplete="onInit()" show="onShow()" resize="onResize(event)" .... </code></pre> <p>There are couple of properties that are binded from the parent container in mxml. Other than the above listeners there is also a private variable accessed from outside -</p> <pre><code>[Bindable] private var _model:SModelLocator=SModelLocator.GetInstance(); </code></pre> <p>On unload of the module I call a dispose function in this component as below-</p> <pre><code>public function dispose():void { this.removeEventListener(FlexEvent.CREATION_COMPLETE,onInit); this.removeEventListener(FlexEvent.SHOW,onShow); this.removeEventListener(ResizeEvent.RESIZE,onResize); var arr:Array = this.getChildren(); for(var i:int = 0; i&lt;arr.length;i++) delete arr[i]; this.removeAllChildren(); _model = null; //Properties that are binded from the parent container Property1 = null; Property2 = null; this.deleteReferenceOnParentDocument(this.parentDocument as IFlexDisplayObject); } </code></pre> <p>Now when I run profiler and switch between modules number of instances of this component still continues to grow. I clicked on GC Collect on profiler and still the instances stay.</p> <p>On the parent container which is the module mxml, I also tried writing the following lines upon unload of module-</p> <pre><code>//function call to invoke dispose as above component1.dispose(); component1 = null; </code></pre> <p>Please help. I am not sure what am I missing here, or even if this is the right approach.</p> <p>Thanks.</p>
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