[jboss-dev-forums] [Design the new POJO MicroContainer] - MC deadlock
alesj
do-not-reply at jboss.com
Fri Nov 16 14:43:20 EST 2007
We should do something about this deadlock.
Dunno really how to reproduce it :-), but it happens quite often.
| java.exe session:0 threads:10 parent:3780 4052
| Full thread dump Java HotSpot(TM) Client VM (1.5.0_11-b03 mixed mode, sharing):
|
| "StackTrace Remote Thread" prio=6 tid=0x00a67468 nid=0x6c8 runnable [0x00000000..0x0346fb70]
|
| "B" prio=6 tid=0x02eeba68 nid=0xed8 waiting for monitor entry [0x033be000..0x033bfb68]
| at org.jboss.classloader.spi.base.BaseClassLoader.unlock(BaseClassLoader.java:713)
| - waiting to lock <0x22a5b438> (a org.jboss.classloader.spi.base.BaseClassLoader)
| at org.jboss.classloader.spi.base.BaseClassLoader.unlock(BaseClassLoader.java:595)
| at org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:286)
| at org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:145)
| at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:193)
| at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:752)
| at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:483)
| at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:158)
| - locked <0x22a60ac0> (a org.jboss.classloader.spi.base.BaseClassLoader)
| at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
| at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
| - locked <0x22a60ac0> (a org.jboss.classloader.spi.base.BaseClassLoader)
| at java.lang.ClassLoader.defineClass1(Native Method)
| at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
| at org.jboss.classloader.spi.base.BaseClassLoader.access$200(BaseClassLoader.java:58)
| at org.jboss.classloader.spi.base.BaseClassLoader$1.run(BaseClassLoader.java:279)
| at org.jboss.classloader.spi.base.BaseClassLoader$1.run(BaseClassLoader.java:246)
| at java.security.AccessController.doPrivileged(Native Method)
| at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:244)
| - locked <0x22a60ac0> (a org.jboss.classloader.spi.base.BaseClassLoader)
| at org.jboss.classloader.spi.base.BaseClassLoader.loadClassLocally(BaseClassLoader.java:217)
| at org.jboss.classloader.spi.base.BaseDelegateLoader.loadClass(BaseDelegateLoader.java:75)
| at org.jboss.classloader.spi.filter.FilteredDelegateLoader.loadClass(FilteredDelegateLoader.java:90)
| at org.jboss.classloader.spi.base.ClassLoadingTask$ThreadTask.run(ClassLoadingTask.java:449)
| at org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:251)
| at org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:145)
| at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:193)
| at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:752)
| at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:483)
| at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:158)
| - locked <0x22a60ac0> (a org.jboss.classloader.spi.base.BaseClassLoader)
| at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
| at org.jboss.test.classloader.AbstractClassLoaderTest.assertLoadClass(AbstractClassLoaderTest.java:176)
| at org.jboss.test.classloader.AbstractClassLoaderTest.assertLoadClass(AbstractClassLoaderTest.java:158)
| at org.jboss.test.classloader.AbstractClassLoaderTest.assertLoadClass(AbstractClassLoaderTest.java:143)
| at org.jboss.test.classloader.delegate.test.DelegateUnitTestCase.access$100(DelegateUnitTestCase.java:54)
| at org.jboss.test.classloader.delegate.test.DelegateUnitTestCase$2.run(DelegateUnitTestCase.java:299)
|
| "A" prio=6 tid=0x02ef2d28 nid=0x980 in Object.wait() [0x0337e000..0x0337fbe8]
| at java.lang.Object.wait(Native Method)
| - waiting on <0x22a7aac8> (a java.util.Collections$SynchronizedList)
| at java.lang.Object.wait(Object.java:474)
| at org.jboss.classloader.spi.base.ClassLoaderManager.nextTask(ClassLoaderManager.java:204)
| - locked <0x22a7aac8> (a java.util.Collections$SynchronizedList)
| at org.jboss.classloader.spi.base.ClassLoaderManager.process(ClassLoaderManager.java:145)
| at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:193)
| at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:752)
| at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:483)
| at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:158)
| - locked <0x22a5b438> (a org.jboss.classloader.spi.base.BaseClassLoader)
| at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
| at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
| - locked <0x22a5b438> (a org.jboss.classloader.spi.base.BaseClassLoader)
| at java.lang.Class.getDeclaredMethods0(Native Method)
| at java.lang.Class.privateGetDeclaredMethods(Class.java:2395)
| at java.lang.Class.getMethod0(Class.java:2642)
| at java.lang.Class.getMethod(Class.java:1579)
| at org.jboss.test.classloader.delegate.test.DelegateUnitTestCase$1.run(DelegateUnitTestCase.java:277)
|
| "Low Memory Detector" daemon prio=6 tid=0x00a730f8 nid=0x290 runnable [0x00000000..0x00000000]
|
| "CompilerThread0" daemon prio=10 tid=0x00a71d68 nid=0xb58 waiting on condition [0x00000000..0x02c1fa48]
|
| "Signal Dispatcher" daemon prio=10 tid=0x00a71070 nid=0x964 runnable [0x00000000..0x00000000]
|
| "Finalizer" daemon prio=8 tid=0x00a48b78 nid=0x304 in Object.wait() [0x02b9f000..0x02b9fa68]
| at java.lang.Object.wait(Native Method)
| - waiting on <0x22f456d8> (a java.lang.ref.ReferenceQueue$Lock)
| at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
| - locked <0x22f456d8> (a java.lang.ref.ReferenceQueue$Lock)
| at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
| at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
|
| "Reference Handler" daemon prio=10 tid=0x00a6ab30 nid=0xb50 in Object.wait() [0x02b5f000..0x02b5fae8]
| at java.lang.Object.wait(Native Method)
| - waiting on <0x22f45758> (a java.lang.ref.Reference$Lock)
| at java.lang.Object.wait(Object.java:474)
| at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
| - locked <0x22f45758> (a java.lang.ref.Reference$Lock)
|
| "main" prio=6 tid=0x00037150 nid=0x858 in Object.wait() [0x0007e000..0x0007fc3c]
| at java.lang.Object.wait(Native Method)
| - waiting on <0x22a79850> (a org.jboss.test.classloader.delegate.test.DelegateUnitTestCase$1)
| at java.lang.Thread.join(Thread.java:1095)
| - locked <0x22a79850> (a org.jboss.test.classloader.delegate.test.DelegateUnitTestCase$1)
| at java.lang.Thread.join(Thread.java:1148)
| at org.jboss.test.thread.TestThread.doJoin(TestThread.java:66)
| at org.jboss.test.classloader.delegate.test.DelegateUnitTestCase.testAbstractFactoryConcurrent(DelegateUnitTestCase.java:306)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at junit.framework.TestCase.runTest(TestCase.java:154)
| at junit.framework.TestCase.runBare(TestCase.java:127)
| at junit.framework.TestResult$1.protect(TestResult.java:106)
| at junit.framework.TestResult.runProtected(TestResult.java:124)
| at junit.framework.TestResult.run(TestResult.java:109)
| at junit.framework.TestCase.run(TestCase.java:118)
| at junit.framework.TestSuite.runTest(TestSuite.java:208)
| at junit.framework.TestSuite.run(TestSuite.java:203)
| at junit.extensions.TestDecorator.basicRun(TestDecorator.java:22)
| at junit.extensions.TestSetup$1.protect(TestSetup.java:19)
| at junit.framework.TestResult.runProtected(TestResult.java:124)
| at junit.extensions.TestSetup.run(TestSetup.java:23)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.apache.maven.surefire.junit.JUnitTestSet.execute(JUnitTestSet.java:213)
| at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:138)
| at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:125)
| at org.apache.maven.surefire.Surefire.run(Surefire.java:132)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:314)
| at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:917)
|
| "VM Thread" prio=10 tid=0x00a68628 nid=0x384 runnable
|
| "VM Periodic Task Thread" prio=10 tid=0x00a70c80 nid=0xa0 waiting on condition
|
|
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