After late-night conversations amongst coworkers and friends over beers, I’ve discovered that many flash developers remain unfamiliar with AVM2′s inter workings. A while ago, I found a couple documents which have benefited me greatly in understanding AVM2 and AS3:
Actionscript 3.0 and Performance Tuning
AVM2 Overview
There are definitely some big take-aways in these two documents. I would list them here, but then you might not read them for yourself! ;)
The first document is 74 powerpoint slides (prepared by Gary Grossman of Adobe) which is very useful for getting a quick understanding of AVM2 topics such as garbage collection, the benefits of strong typing, the Actionscript byte code (abc) format, the code interpreter and JIT compilation. For an AS3 developer this is a must-read.
The second document is a bit more dense. It contains 108 pages of more formally described underpinnings of the virtual machine. It focuses a lot on how your AS3 code will ultimately be run as processor instructions. Its a great follow-up to the first document. If you’re a geek, I would highly recommend reading this overview.
