Java Development

[nunonobre]

My application is terminating because of the error: "Queue too large ". How many Threads could my application run at same time? How can I avoid this?

[mreed]

You're probably calling invokeLater() too many times.

[nunonobre]

Hi,

I never used the invokeLater. I have several Threads running in background, almost 15/16. How can I avoid this? Is there any queue when we can put threads to run later?

[simon_hain]

there is none in the API, but you can write one yourself.
we have an executor queue that runs up to three threads, it uses a queue where you add runnables, which in turn notifies one of the threads to wake up and work on it.

[pradeep_ch]

May be this link useful.

http://blog.vimviv.com/j2me/taskworker-thread-blackberry/

Thanks.

[mreed]

1) What is the full error?

2) What makes you think it is because you have too many threads? There would be a TooManyThreads error if that were the case (http://supportforums.blackberry.com/t5/Java-Development/TooManyThreadsError/ta-p/444894)

3) What can you tell us about what you're threads are doing?

There are several ways I've seen the "Queue too large":

1) Event injection called too fast (http://supportforums.blackberry.com/t5/Java-Development/163-queue-too-large-key-stylus-event-s-dropp...)

2) UiApplication.invokeLater called too often, filling up the UI queue (http://supportforums.blackberry.com/t5/Java-Development/Process-myapp-325-queue-too-large-76-user-in...)

3) Long running task on UI thread blocking UI execution, causing input events to build up in the queue. (http://supportforums.blackberry.com/t5/Java-Development/process-myapp-288-queue-too-large-31-user-in...)

[nunonobre]

Hi,

The full error is: queue too large (76); user input event(s) dropped. After this I get another error: is not responding; process terminated.

[nunonobre]

Sorry I forgot to answer the other questions.

2.I thought in the TooManyThreads issue because my application has some Threads running in background.

3. My threads are updating UI, making some Http tests, sending reports files...

[nunonobre]

After the erros I added, at the end I got a ForcedStackTraceException from several applications

[mreed]

What method are you using to update the UI? invokeAndWait? Synchronized on the event lock?

Can you confirm that your code for the ui update is quick and doesn't do anything like network calls?