JDK-6174747 : awt/src/AWT_Component/Automated/ComponentLeakTest
  • Type: Bug
  • Component: client-libs
  • Sub-Component: java.awt
  • Affected Version: 6
  • Priority: P2
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2004-10-06
  • Updated: 2011-01-19
  • Resolved: 2004-12-06
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JDK 6
6 b15Fixed
Related Reports
Duplicate :  
JDK-6195678 - REGRESSION: java/awt/Canvas/NoEventsLeakTest/NoEventsLeakTest.java fails
Duplicate :  
JDK-6192573 - Memory leak when component is extended and implemented as inner class
Duplicate :  
JDK-6196388 - REGRESSION: java/awt/image/BufferedImage/BufImgGraphicsConfig/GarbageCollectionTest fails
Relates :  
JDK-4952802 - postEvent perf. heavily depends on EventQueue length
Relates :  
JDK-6215549 - Windows: AWT_Component/Automated/ComponentLeakTest fails
Description
java version "awt.pit-awt-blade-2004-09-29-Wed-int.mustang"
Java(TM) 2 Runtime Environment, Standard Edition (build awt.pit-awt-blade-2004-09-29-Wed-int.mustang)
Java HotSpot(TM) Client VM (build 1.6.0-ea-b05, mixed mode)

awt/src/AWT_Component/Automated/ComponentLeakTest testcase (also attatched with this report) fails consistently with the pit build of PIT-SEP-28-2004.
The following excpetion is thrown:
java.lang.RuntimeException: Frame not finalized
        at ComponentLeakTest.start(ComponentLeakTest.java:132)
        at sun.applet.AppletPanel.run(AppletPanel.java:441)
        at java.lang.Thread.run(Thread.java:595)
This failiure is seen on all pit configs(LinuxAS3.0, Cinnabar,Solaris10, WinXp)The test had passed with 1.6.0 build 04.
###@###.### 10/6/04 06:00 GMT
###@###.### 10/6/04 06:20 GMT
Comments
EVALUATION A regression of #4952802. IdentityHashMap used to hold a map of components which uses events' coalesce and this map has never been cleared. This means that this map holds the link on a particular Component which may not been gced. It seems that this fix affects serialization too, because private constructor of Component where initialization of map occur will not invoke during deserialization. Possible solutions is to use WeakReference on Component instead of a Component in IdentityHashMap since a WeakReferences could be gced. ###@###.### 10/6/04 17:09 GMT Attached test is also located in test/java/awt/Component/ComponentLeakTest/ ###@###.### 10/7/04 10:07 GMT
06-10-2004