Hi, I am basically a Java guy, recently into Flex. It may be due to the sudden paradigm shift from serial programming ( incl Threads) to Event Based Programming, that I find many features totally new and surprising.
I read in a article that Flash/Flex is based on AMPED (Asymmetric-Multi Process Event Driven) Architecture. In this kind of architecture , We have a single thread dispatching the events and the control gets transferred between the Events and the main thread. ( These are my vague conclusions from what I have read and understood, Correct me if I am wrong! ) So if the event dispatched doesn't have a IO/Network operation, the control reaches back to the EventDispatcher only after the eventhandler method is totally complete. But if our eventhandling mechanism has a huge data crunching operation , doesn't that freeze the client? 1. Lets say I have 2 things to be done, Doing a animation and some huge data operation simultaneously! In Java, what we usually do is spawn a new thread for doing the animation (or) doing the data operation! This takes care of the scenario. Now in Flex, We dispatch events, Lets say, OperateDataEvent and AnimateEvent, both of them have some handlers (ODEHandler, AEHandler respectively). Now when we do something like this, dispatchEvent(new OperateDataEvent()) and dispatchEvent(new AnimateEvent()) How does the control flow?? Does this fully complete the DataOperationEvent first and then return to animateEvent ! Since its a single thread model, I guess it should be done so! But then it doesnt sound logical for any matured programming languge to cripple an application from doing another task and make it wait. 2. Second thing is, How does the Timer/setInterval actually function in the Flex architecture, Is it a separate 'thread' ( Oops!this Java hangover is not gonna leave me ! ) Is it advisable to have big operations inside the timerHandler which may result in periodic glitches in the application. 3 Can anyone give a good resource of the AVM structure and design and how it differs from JVM! Thanks in advance Cheers, Ravi Kumar G PartyGaming Plc. www.partygaming.com "What is right is right, even if no one is doing it. What is wrong is wrong, even if everyone is doing it." ____________________________________________________________________________________ 8:00? 8:25? 8:40? Find a flick in no time with the Yahoo! Search movie showtime shortcut. http://tools.search.yahoo.com/shortcuts/#news
