CODEWITHSUNDEEP
actionscript-3apache-flexflex4.5
Yordan Yanakiev
Yordan Yanakiev

Reputation: 2604

Decrease CPU load while calculating for a long time on AIR mobile application?

I am facing the follow problem : - There is a calculation which is calculated complex maths during the loading of the application, and it is toking considerable long time ( about 20 seconds ) on which time the CPU is used nearly on 100% and the application look like it is frozen. Since it is a mobile application, this must be prevented, even with the costs of extending the initial loading time, but there is not direct access to the calculating code since it is inside 3rd party library.

Upvotes: 0

Views: 127

Answers (1)

csomakk
csomakk

Reputation: 5497

On desktop, you would use the Workers API. Its pretty new, I'd recommend it for AS3 only projects. If you use flex, its better to wait a few months. Workers is a multi-threading API, what allows you to make a UI and a Working thread. This will still use 100% of CPU, but UI won't stuck.. Here are some links to get you started: Thibault Imbert - sneak peek, Intro to as 3 workers, AS3 Workers livedocs

However, on Mobile, you can't use workers, so you'd have to break your function apart, and insert some delays there, like callLater, or setTimeout. Its hard to compose a function like that, but if it has a loop, you can insert a callLater method after every x iteration. you can parametrize both x, and the delay of callLater function to achieve perfect solution. After callLater is called, the UI will be rendered, events will be generated and catched. If you don't need them, remove their listeners, or stop their propagation with a higher priority handler. If you need, I can post some source example of callLater in a loop.

Upvotes: 3

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