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Date: Fri, 9 Feb 2007 00:29:05 -0800 (PST)
From: "Pavel Pervov (JIRA)" <jira@apache.org>
To: commits@harmony.apache.org
Subject: [jira] Commented: (HARMONY-3140) [drlvm][classloader] test
 org.apache.harmony.luni.tests.java.lang.ClassLoaderTest intermittently hang
 up on DRLVM+Win
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    [ https://issues.apache.org/jira/browse/HARMONY-3140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12471619 ] 

Pavel Pervov commented on HARMONY-3140:
---------------------------------------

Yes, you are right. I looked through test source and I think it is bug in test. Main thread must ensure both loading threads are on wait before calling to notifyAll.

> [drlvm][classloader] test org.apache.harmony.luni.tests.java.lang.ClassLoaderTest intermittently hang up on DRLVM+Win
> ---------------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-3140
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3140
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Vladimir Ivanov
>         Attachments: luni.ex.patch, zipjupwOWUo70.zip
>
>
> The harmony test org.apache.harmony.luni.tests.java.lang.ClassLoaderTest intermittently hangs up on DRLVM+Win. When this test was run in the cycle I sow hangs on iteration N 7 and 37.
> -------- 
> #!/bin/sh 
> RUNTIME=harmony/drlvm/trunk/build/win_ia32_msvc_debug/deploy/jdk/jre/bin/java
> MODULE=harmony/classlib/trunk/modules/luni
>   
> A=0 
> while [ "$A" -lt "100" ]; do 
>     ${RUNTIME} \
>         -cp "${MODULE}/bin/test;${MODULE}/src/test/resources;harmony.top/classlib/trunk/deploy/build/test/support.jar;harm/junit.jar" \
>         junit.textui.TestRunner org.apache.harmony.luni.tests.java.lang.ClassLoaderTest
>     echo $? 
>     A=`expr $A + 1` 
>     echo $A 
> done 
> --------
> Thread dump:
> ..The stack trace of the 02BDD298 java thread:
> The stack trace of the 02BDAEA8 java thread:
>   [02BDAEA8] 031F6361(m): java/lang/ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;
>   [02BDAEA8] 031F608E(m): java/lang/ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;
>   [02BDAEA8] 031E8E71(m): java/lang/Class.forName(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;
>   [02BDAEA8] 03229F19(m): org/apache/harmony/luni/tests/java/lang/ClassLoaderTest$SyncLoadTestThread.run()V
>   [02BDAEA8] 031F9788(m): java/lang/Thread.runImpl()V
> The stack trace of the 02BD4B90 java thread:
>   [02BD4B90] 00000000(n): java/lang/VMThreadManager.wait(Ljava/lang/Object;JI)I
>   [02BD4B90] 031F932B(m): java/lang/Object.wait()V
>   [02BD4B90] 0322A068(m): org/apache/harmony/luni/tests/java/lang/ClassLoaderTest$SyncTestClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;
>   [02BD4B90] 031F642A(m): java/lang/ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;
>   [02BD4B90] 031F608E(m): java/lang/ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;
>   [02BD4B90] 031E8E71(m): java/lang/Class.forName(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;
>   [02BD4B90] 03229F19(m): org/apache/harmony/luni/tests/java/lang/ClassLoaderTest$SyncLoadTestThread.run()V
>   [02BD4B90] 031F9788(m): java/lang/Thread.runImpl()V
> The stack trace of the 02A16218 java thread:
>   [02A16218] 00000000(n): java/lang/VMThreadManager.wait(Ljava/lang/Object;JI)I
>   [02A16218] 031F932B(m): java/lang/Object.wait()V
>   [02A16218] 031FCE2C(m): java/lang/FinalizerThread.waitNewTask()V
>   [02A16218] 031FC162(m): java/lang/FinalizerThread.run()V
>   [02A16218] 031F9788(m): java/lang/Thread.runImpl()V
> The stack trace of the 011EFB48 java thread:
>   [011EFB48] 00000000(n): java/lang/VMThreadManager.wait(Ljava/lang/Object;JI)I
>   [011EFB48] 031F932B(m): java/lang/Object.wait()V
>   [011EFB48] 0359A3EE(m): java/lang/Thread.join()V
>   [011EFB48] 03227E8C(m): org/apache/harmony/luni/tests/java/lang/ClassLoaderTest.test_loadClass_concurrentLoad()V
>   [011EFB48] 005848D0(n): java/lang/reflect/VMReflection.invokeMethod(JLjava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
>   [011EFB48] 03358399(m): java/lang/reflect/Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
>   [011EFB48] 03226A8B(m): junit/framework/TestCase.runTest()V
>   [011EFB48] 032265F0(m): junit/framework/TestCase.runBare()V
>   [011EFB48] 0322651B(m): junit/framework/TestResult$1.protect()V
>   [011EFB48] 032263ED(m): junit/framework/TestResult.runProtected(Ljunit/framework/Test;Ljunit/framework/Protectable;)V
>   [011EFB48] 03225B53(m): junit/framework/TestResult.run(Ljunit/framework/TestCase;)V
>   [011EFB48] 032259F6(m): junit/framework/TestCase.run(Ljunit/framework/TestResult;)V
>   [011EFB48] 0322593C(m): junit/framework/TestSuite.runTest(Ljunit/framework/Test;Ljunit/framework/TestResult;)V
>   [011EFB48] 03225641(m): junit/framework/TestSuite.run(Ljunit/framework/TestResult;)V
>   [011EFB48] 032250BE(m): junit/textui/TestRunner.doRun(Ljunit/framework/Test;Z)Ljunit/framework/TestResult;
>   [011EFB48] 03221B15(m): junit/textui/TestRunner.start([Ljava/lang/String;)Ljunit/framework/TestResult;
>   [011EFB48] 03220E6C(m): junit/textui/TestRunner.main([Ljava/lang/String;)V

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