Application Domain and External SWF Loading
Why do we care about application domains? I worked on a project that required me to load and unload SWF files into a bigger application (loading mini-games into a virtual world). Every time I loaded a mini-game, it would never unload when I exited it. That will keep accumulating until the app slows down to a crawl and crash because we’re out of memory.
The application domain and definition loading is one of the things that is not documented in a way the common mortal can understand. By popular demand, I will attempt to explain it the way I understand it. I will provide some examples along the way. Before I continue, here is a link to the official documentation on ApplicationDomain.
I will explain class definitions and domains, and then tell you what you can do to properly unload your movies and assets.
Class Definitions
Everything that you load has to be stored somewhere. It’s easy to understand the visual elements because you can just stick them on the stage. But what about class definitions?
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