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Posted to commits@harmony.apache.org by "Vasily Zakharov (JIRA)" <ji...@apache.org> on 2006/12/12 18:51:22 UTC
[jira] Commented: (HARMONY-2615) [drlvm][test] Stress test for
massive class loading from bootclasspath
[ http://issues.apache.org/jira/browse/HARMONY-2615?page=comments#action_12457822 ]
Vasily Zakharov commented on HARMONY-2615:
------------------------------------------
A particular issue described above is not in fact caused by massive class loading, but by some problems in org.mmtk.plan.Plan class itself. So, a separate issue is filed on that problem, HARMONY-2650.
> [drlvm][test] Stress test for massive class loading from bootclasspath
> ----------------------------------------------------------------------
>
> Key: HARMONY-2615
> URL: http://issues.apache.org/jira/browse/HARMONY-2615
> Project: Harmony
> Issue Type: Test
> Components: DRLVM
> Reporter: Vasily Zakharov
> Attachments: CrashTestBCP.java
>
>
> This is a stress test which loads all the classes it finds in VM bootclasspath using simple Class.forName() call.
>
> Not all of the classes are supposed to be loaded correctly this way, so the test ignores any class loading errors - its main purpose is to make sure VM survives loading thousands of classes without a crash. Also, investigating why particular classes fail to load may provide clues to some other bugs in VM or classlib.
> I recommend including this test to some Harmony test suite that is run regularly, as it may detect many VM issues that may occur in future.
> Currently this test crashes both on Windows/IA32 and Linux/IA32 in a very strange way - at some point, unhandled exception occurs inside the catch(Throwable) block:
> 9879: org.mmtk.plan.Plan
> java.lang.ClassNotFoundException: null.Factory
> at java.lang.Class.forName(Unknown Source)
> at java.lang.Class.forName(Unknown Source)
> at org.mmtk.vm.VM.<clinit>(Unknown Source)
> at org.mmtk.utility.Constants.<clinit>(Unknown Source)
> at org.mmtk.plan.Plan.<clinit>(Unknown Source)
> at java.lang.VMClassRegistry.initializeClass(Native Method)
> at java.lang.Class.forName(Unknown Source)
> at java.lang.Class.forName(Unknown Source)
> at CrashTestBCP.load(CrashTestBCP.java:75)
> at CrashTestBCP.main(CrashTestBCP.java:98)
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