Comments on: Callback Strategies

By: Things I learnt recently « Tahir Ahmed's thoughts

Things I learnt recently « Tahir Ahmed's thoughts — Tue, 09 Mar 2010 08:37:03 +0000

[...] Penner, I owe you for that one; you are the man. AS3Signals is simply fantastic. With different tests showing the speed of this event mechanism and a presentation and a video tutorial showing how easy [...]

By: Weekly Shared Items – 23. February, 2010 | TOXIN LABS - weblog of a german design student from wuerzburg

Tue, 23 Feb 2010 06:04:47 +0000

[...] Callback Strategies [...]

By: jackson

jackson — Tue, 16 Feb 2010 18:33:02 +0000

I updated to your latest source (Git from last night, 2/15/2010) and my re-test is part of my article Introducing TurboSignals. It does indeed look like you've made some serious strides in performance. Congrats!

By: jackson

jackson — Tue, 16 Feb 2010 18:31:30 +0000

I hadn't heard about the MATE framework before, but it does indeed look like it uses a lot of events. All of the examples look pretty simple though, so there's probably not much of a performance concern at all. Perhaps a much larger, more complicated MATE application would start to feel the Event/EventDispatcher system pain. Believe me, if you look into how much allocation, deallocation, and the GC work that system produces, you'll see why it's bad to do a lot of it (hundredsper second). A few a second is just fine for a weather widget. :)

By: Arnaud

Arnaud — Tue, 16 Feb 2010 14:15:25 +0000

Very good post ! very interesting.
What is your opinion about the MATE framework which makes an extensive use of Events ?

By: jackson

jackson — Wed, 10 Feb 2010 18:45:48 +0000

Cool! Perhaps I will re-test…

By: Robert Penner

Robert Penner — Wed, 10 Feb 2010 04:33:17 +0000

I optimized Signal dispatch() by moving the listeners array clone to add() and remove(). It’s about twice as fast as before on Windows, when sending to one listener.

By: Karl Knocking

Karl Knocking — Thu, 04 Feb 2010 12:05:34 +0000

Wow, impressive results. Runnables seem to be the thing for me! :)

By: Sharedtut

Sharedtut — Tue, 02 Feb 2010 03:49:24 +0000

Thank you for posting some code to show your example.

By: jackson

jackson — Mon, 01 Feb 2010 23:50:06 +0000

That's what I figured too. I briefly perused the source code and saw some performance-related TODOs in there near the concat() call, which seems to be in place to make sure that you call back listeners that get removed during the dispatch. Perhaps there's a faster way, such as keeping two lists like in a back buffering strategy. Just a thought; I haven't performance-tested such an option. Thanks for your work on as3signals. In addition to providing a nice alternative to the Event API they have provided a very nice performance increase on Macs!