Hi !
I am experiencing very annoying deadlock that happen both in
development and deployment situations under load situations.
It happens randomly. Progressively all threads go into deadlock.
They all block on the same method :
[1] sun.misc.Unsafe.park (native method)
I cannot understand why :-(
We use autolock from Project Wonder with the four magic lines in
Properties.
Both the WorkerThreads and the Background threads block on this with
varying stack traces (or at least I could not determine what is in
common) :
AThreadLaunchedFromAWorkerThread
[1] sun.misc.Unsafe.park (native method)
[2] java.util.concurrent.locks.LockSupport.park (LockSupport.java:
118)
[3]
java
.util
.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt
(AbstractQueuedSynchronizer.java:716)
[4]
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued
(AbstractQueuedSynchronizer.java:746)
[5] java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire
(AbstractQueuedSynchronizer.java:1,076)
[6] java.util.concurrent.locks.ReentrantLock$NonfairSync.lock
(ReentrantLock.java:184)
[7] java.util.concurrent.locks.ReentrantLock.lock
(ReentrantLock.java:256)
[8] com.webobjects.eocontrol.EOObjectStoreCoordinator.lock
(EOObjectStoreCoordinator.java:420)
[9] com.webobjects.eocontrol.EOEditingContext.lockObjectStore
(EOEditingContext.java:4,650)
[10] com.webobjects.eocontrol.EOEditingContext.faultForGlobalID
(EOEditingContext.java:3,606)
[11] er.extensions.ERXEC.faultForGlobalID (ERXEC.java:972)
[12] com.webobjects.eoaccess.EOUtilities.localInstanceOfObject
(EOUtilities.java:989)
...
WorkerThread4:
[1] sun.misc.Unsafe.park (native method)
[2] java.util.concurrent.locks.LockSupport.park (LockSupport.java:
118)
[3]
java
.util
.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt
(AbstractQueuedSynchronizer.java:716)
[4]
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued
(AbstractQueuedSynchronizer.java:746)
[5] java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire
(AbstractQueuedSynchronizer.java:1,076)
[6] java.util.concurrent.locks.ReentrantLock$NonfairSync.lock
(ReentrantLock.java:184)
[7] java.util.concurrent.locks.ReentrantLock.lock
(ReentrantLock.java:256)
[8] com.webobjects.eocontrol.EOObjectStoreCoordinator.lock
(EOObjectStoreCoordinator.java:420)
[9] com.webobjects.eocontrol.EOEditingContext.lockObjectStore
(EOEditingContext.java:4,650)
[10]
com
.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification
(EOEditingContext.java:4,051)
[11] er.extensions.ERXEC.objectsWithFetchSpecification (ERXEC.java:
1,068)
[12]
com
.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification
(EOEditingContext.java:4,428)
...
It happens under 10.5.1 and 10.5.2 and WebObjects 5.4.0 and 5.4.1
Anyone experienced this?
Anyone has an idea how this can be happening?
Best regards
Fabrice Pipart
www.easyshadow.com
EasyMediaOnline
Digital Signage Software
Easyshadow
Palais de la Scala
1 avenue Henri Dunant
Suite 1155
MC - 98000 Monaco
Skype: fabrice.pipart
Tel. +377 97 98 21 04 (direct)
Fax. +377 97 70 88 07
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