Hi Jim, In the last 12 hours, I've found out a lot of interesting stuff. I wish I could sit in your office and explain it all. Email has limits...
But to summarize -- I solved the conundrum of how to gracefully exit from an OOME. I put the call to pg.grabPixels(long n) in a separate thread -- pgThread -- then I loop on pgThread.isAlive(). pgThread() stays alive even though grabPixels() is wait()'ing for ImageFetcher to notify() it. However, the PixelGrabber object is still alive and well and ImageFetcher does set the state to IMAGEERROR in pg,ImageComplete(). Each time through the pgThread.isAlive() loop, I simply check the error state. If there is an error, I notify both the PixelGrabber and the pgThread. It all comes unwedged at that point and I am able to catch Throwables in various places and eventually end up right where I want to. I am sending you the complete source to MY class -- in a separate email -- that does my image fetching and image creation and pixel grabbing so you can have a better idea of what I did. It's messy. But I want you to see the whole thing before I clean it up. Here is an EXECUTION trace -- not a stack trace. I printout information so I can watch the execution. APPLET PanCyl v0.1h INIT getImageBytes()... makeImageFromToolkit()... START loadImage(images/Room.jpg) run()... getImageBytes()... makeImageFromToolkit()... getImageParametersAndPixels()... pgThread alive... status = 0 ts = RUNNABLE Exception in thread "Image Fetcher 0" java.lang.OutOfMemoryError: Java heap space pgThread alive... status = 192 ts = RUNNABLE isAlive: image fetch aborted or errored (1)Throwable: getImageParametersAndPixels()... Grabbing Pixels Failed... (2)Throwable: getImageParametersAndPixels()... STOP DESTROY... I suspect that the reason why you wrote MediaTracker is the same reason why PixelGrabber will wedge. I suspect that this has to do more with the native threads than the Java JVM. Ken =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
