Update of the screen, threading and synchronization

I have a game I developed that uses multiple threads to process. The game does not focus on the user by itself and seems to be accelerating when there are more items on the screen and slows down when there is less. I have four threads in use. Three of them are used to update the main (UI) thread and run continuously; two update a class watch stop custom, and the third simply disabled the screen to force a refresh. All three of the threads use locks objects synchronized; That's why I think it slows down when nothing is on the screen, because they constantly block. I do not have variables that are constantly updated by the thread and read survival gear each iteration; which I was I use locks. I use the IDE 4.7 and the simulator of the storm. Profiling code over a minute 3 period shows that almost 60% of the execution time is during one of the locked rows (block I'm of course). I was wondering what I should use locks because only the UI thread updates one of the three? If so, is there a better way. Code can be provided if necessary.

BUDOKAI-is that they have a book of text on the famine of lock?

http://Java.Sun.com/docs/books/tutorial/essential/concurrency/starvelive.html

[ed, I would also like to make out this seems to be a tight loop so that it also uses time spinning CPU]

during the liberation that briefly up to 2 locks]

While (true) {}
synchronized (runLock) {}
If {(race)
synchronized (pauseLock) {}

Tags: BlackBerry Developers

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