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Posted to commits@harmony.apache.org by "Vasily Zakharov (JIRA)" <ji...@apache.org> on 2007/01/16 04:54:27 UTC
[jira] Commented: (HARMONY-2615) [drlvm][test] Stress test for
massive class loading from bootclasspath
[ https://issues.apache.org/jira/browse/HARMONY-2615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12465049 ]
Vasily Zakharov commented on HARMONY-2615:
------------------------------------------
At r496561/WinXP/DRLVM/JIT, the test crashes after loading 800 classes with the following diagnostic:
Assertion failed!
File: classloader.cpp
Line: 1490
Expression: !exn_raised()
On interpreter, the test stalls after loading 312 classes.
> [drlvm][test] Stress test for massive class loading from bootclasspath
> ----------------------------------------------------------------------
>
> Key: HARMONY-2615
> URL: https://issues.apache.org/jira/browse/HARMONY-2615
> Project: Harmony
> Issue Type: Test
> Components: DRLVM
> Reporter: Vasily Zakharov
> Attachments: CrashTestBCP.java, CrashTestBCP2.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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