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From "Vasily Zakharov (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-3602) [classlib][awt][drlvm][netbeans] ImageDecoder.terminate() interrupts current thread
Date Mon, 09 Apr 2007 19:03:32 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-3602?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vasily Zakharov updated HARMONY-3602:
-------------------------------------

    Summary: [classlib][awt][drlvm][netbeans] ImageDecoder.terminate() interrupts current
thread  (was: [classlib][awt][drlvm][netbeans] OffscreenImage.flush() sets interrupt flag)

> [classlib][awt][drlvm][netbeans] ImageDecoder.terminate() interrupts current thread
> -----------------------------------------------------------------------------------
>
>                 Key: HARMONY-3602
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3602
>             Project: Harmony
>          Issue Type: Bug
>          Components: App-Oriented Bug Reports, Classlib, DRLVM
>            Reporter: Vasily Zakharov
>         Attachments: test.gif
>
>
> The following piece of code causes interrupt flag to be set on the current thread:
> public class Test {
>     public static void main(String args[]) throws Exception {
>         java.awt.Image img = java.awt.Toolkit.getDefaultToolkit().createImage(Thread.currentThread().getContextClassLoader().getResource("test.gif"));
>         new javax.swing.ImageIcon(img); // Loads the image.
>         img.flush(); // ERROR: Sets interrupt flag.
>         System.out.println(Thread.currentThread().isInterrupted() ? "FAIL" : "SUCCESS");
>     }
> }
> Please put the attached test.gif (it's a trivial image, nothing special, but it should
exist) to current directory before running the test.
> The stack of calls causing interrupt flag to be set is:
> 	org.apache.harmony.awt.gl.image.ImageDecoder.terminate() :128
> 	org.apache.harmony.awt.gl.image.DecodingImageSource.removeConsumer(ImageConsumer) :105
> 	org.apache.harmony.awt.gl.image.OffscreenImage.stopProduction() :426
> 	org.apache.harmony.awt.gl.image.OffscreenImage.flush() :133
> Probably ImageDecoder.terminate() should not use Thread.currentThread() do determine
a thread to interrupt.
> Output on RI:
> SUCCESS
> Output on Harmony/IBM VM:
> SUCCESS
> Output on Harmony/DRL VM:
> FAIL
> This looks like a clear AWT problem, however the problem only occurs on DRL VM, so probably
some issue (race condition, lack of synchronization or something like that) exists there also.
> The problem was discovered while trying to run NetBeans on Harmony.

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