Thanks, Tracy. I'm not principally concerned with knowing when two operations have completed. I'm more concerned about checking the status of a global variable in event handler A' and then having that variable's value changed by event handler B' before A' is finished executing. In Java you might use a synchronized block for this. I was hoping the flash player might make some guarantees that make a concern like this unnecessary, especially since it executes in a single thread.
Are there any resources that describe the internals of the Flash player? Is there a spec like there is for the Java runtime? Thanks, Jon On Thu, Aug 27, 2009 at 12:44 PM, Tracy Spratt<[email protected]> wrote: > > > You can’t predict order, but you can be assured that there is no parallel > processing of actionscript code. I don’t know the internals of the flash > player well enough to say in detail but there are rules that control what > code is processed when. > > > > If you need to know that two async processes have completed, use a flag or > dictionary, set a flag value in each handler, and check it in each handler. > > > > Tracy Spratt, > > Lariat Services, development services available > > ________________________________ > > From: [email protected] [mailto:[email protected]] On > Behalf Of Jon Gunnip > Sent: Thursday, August 27, 2009 10:04 AM > To: [email protected] > Subject: [flexcoders] Race conditions when event handlers triggered from > different targets > > > > > > Hi, > > I have a concern about possible race conditions in our Flex > application. I've read in "Essential ActionScript 3.0" that the Flash > runtime will not interrupt the execution of an event handler to update > the screen. I'm wondering if there are any similar guarantees about > the order in which two event handlers registered with different > targets are executed. Consider the following: > > User presses button A triggering event handler A' > In same frame, result returned from HTTPService B, triggering event handler > B' > > If A' starts executing before B', will it run to completion before B' > starts executing, or could their execution be interleaved? > > Thanks, > Jon > > ------------------------------------ -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Alternative FAQ location: https://share.acrobat.com/adc/document.do?docid=942dbdc8-e469-446f-b4cf-1e62079f6847 Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.comYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/flexcoders/join (Yahoo! ID required) <*> To change settings via email: mailto:[email protected] mailto:[email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
