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From "tatyana doubtsova (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-2986) [drlvm][reliability tests] VM hangs on Dekkers algorithm
Date Fri, 12 Jan 2007 15:24:27 GMT
[drlvm][reliability tests] VM hangs on Dekkers algorithm
--------------------------------------------------------

                 Key: HARMONY-2986
                 URL: https://issues.apache.org/jira/browse/HARMONY-2986
             Project: Harmony
          Issue Type: Bug
          Components: DRLVM
         Environment: win XP with 2 Xeon CPUs, drlvm (msvc, debug), svn = r495493
            Reporter: tatyana doubtsova


Running DekkerTest from reliability test suite (https://issues.apache.org/jira/browse/HARMONY-2918)
I observed intermittent drlVM hangs (~1 out of 5). Typing <ctrl><break> gives:

.....
iteration number is 2
The stack trace of the 02CE40A8 java thread:

The stack trace of the 02CE60D8 java thread:
  [02CE60D8] 03320F02(m): Dekkerthread.regionIn(I)V
  [02CE60D8] 03320C03(m): Dekkerthread.run()V
  [02CE60D8] 033106B8(m): java/lang/Thread.runImpl()V

The stack trace of the 02C24270 java thread:
  [02C24270] 00000000(n): java/lang/VMThreadManager.wait(Ljava/lang/Object;JI)I
  [02C24270] 0331042B(m): java/lang/Object.wait()V
  [02C24270] 034416EC(m): java/lang/FinalizerThread.waitNewTask()V
  [02C24270] 03440432(m): java/lang/FinalizerThread.run()V
  [02C24270] 033106B8(m): java/lang/Thread.runImpl()V

The stack trace of the 012EF160 java thread:
  [012EF160] 00000000(n): java/lang/VMThreadManager.wait(Ljava/lang/Object;JI)I
  [012EF160] 0331042B(m): java/lang/Object.wait()V
  [012EF160] 034612EE(m): java/lang/Thread.join()V
  [012EF160] 0332053A(m): DekkerTest.test()I
  [012EF160] 033200FA(m): DekkerTest.main([Ljava/lang/String;)V
...........

Reproducing code and run script attached.

It should be noticed that test also hang on jdk1.5.0_08 and IBM VME. But it occurs ~50 times
rarely.

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