That code does not look to be the source of this deadlock. As a helpful hint, having this code set the thread name to _document.description() makes debugging things like this easier.
Chuck From: Mark Wardle <m...@wardle.org<mailto:m...@wardle.org>> Date: Tuesday, April 5, 2016 at 3:14 PM To: Chuck Hill <ch...@gevityinc.com<mailto:ch...@gevityinc.com>> Cc: WebObjects Dev Apple <webobjects-dev@lists.apple.com<mailto:webobjects-dev@lists.apple.com>> Subject: Re: Deadlock / stack interpretation Thanks Chuck. I have looked at this code. I do spin out a separate thread to do some background processing after a particular request. I thought that passing a EOGlobalID would be safe. The class below takes a Document (an immutable and thread-safe POJO), a Report and an ExternalDocumentStore (both EOEnterpriseObjects). I just wonder whether I should use ERXEOGlobalIDUtilities.fetchObjectWithGlobalID() instead of EOEditingContext.faultForGlobalID() as the former seems to be much more complex and this might be for a good reason? staticclass ReportPublisher implements Runnable { final Document _document; final EOGlobalID _reportGlobalId; final EOGlobalID _storeGlobalId; ReportPublisher(final Document doc, Report report, ExternalDocumentStore store) { if (doc == null || report == null || store == null) { thrownew NullPointerException("A document, report and store must be supplied."); } _document = doc; _reportGlobalId = report.permanentGlobalID(); _storeGlobalId = store.permanentGlobalID(); } @Override publicvoid run() { log.debug("Publishing document '" + _document.description() +"' in background thread..."); NSTimestamp started = new NSTimestamp(); EOEditingContext ec = ERXEC.newEditingContext(); try { ec.lock(); ExternalDocumentStore store = (ExternalDocumentStore) ec.faultForGlobalID(_storeGlobalId, ec); if (store != null) { log.debug("Publishing using repository from class: " +store.implementationClassName()); Class<?> clazz = Class.forName(store.implementationClassName()); Object reposObject = clazz.newInstance(); if (reposObjectinstanceof DocumentRepository) { DocumentRepository repos = (DocumentRepository) reposObject; DocumentReceipt receipt = repos.publishDocument(_document); NSTimestamp finished = new NSTimestamp(); log.debug(receipt.message()); if (receipt.success()) { log.debug("Successfully published document:" + _document.description()); Report r = (Report) ec.faultForGlobalID(_reportGlobalId, ec); PublishedReport pr = r.createPublishedReportsRelationship(); pr.setExternalDocumentStoreRelationship(store); pr.setReportRelationship(r); pr.setDateTimeStarted(started); pr.setDateTimeFinished(finished); ec.saveChanges(); } } else { log.debug("Instance of class not a type of DocumentRepository."); } } else { log.debug("No store found for global id: " +_storeGlobalId); } } catch (ClassNotFoundException|InstantiationException|IllegalAccessException e) { e.printStackTrace(); } finally { ec.unlock(); } } } Am I doing something wrong converting a EOGlobalID to a proper EO in a background thread? Mark On 1 Apr 2016, at 06:03, Chuck Hill <ch...@gevityinc.com<mailto:ch...@gevityinc.com>> wrote: Hi Mark Found one Java-level deadlock: ============================= "WorkerThread127": waiting for ownable synchronizer 0x00000000ec9b7b48, (a java.util.concurrent.locks.ReentrantLock$NonfairSync), which is held by "Thread-5” So this is waiting for an OSC lock: "WorkerThread127": at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000ec9b7b48> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199) at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209) at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285) at com.webobjects.eocontrol.EOObjectStoreCoordinator.lock(EOObjectStoreCoordinator.java:420) at com.webobjects.eocontrol.EOEditingContext.lockObjectStore(EOEditingContext.java:4666) "Thread-5": waiting for ownable synchronizer 0x00000000f60726a0, (a java.util.concurrent.locks.ReentrantLock$NonfairSync), which is held by "WorkerThread5" This thread is holding the OSC lock and is waiting for an EC lock: "Thread-5": at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000f60726a0> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199) at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209) at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285) at com.webobjects.eocontrol.EOEditingContext.lock(EOEditingContext.java:4617) "WorkerThread5": waiting for ownable synchronizer 0x00000000ec9b7b48, (a java.util.concurrent.locks.ReentrantLock$NonfairSync), which is held by "Thread-5" And this thread has the EC lock and is waiting for the OSC lock: "WorkerThread5": at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000ec9b7b48> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199) at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209) at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285) at com.webobjects.eocontrol.EOObjectStoreCoordinator.lock(EOObjectStoreCoordinator.java:420) What you have here is lock order inversion. How is it that Thread-5 and WorkerThread5 are using the same EC? Or is that the Shared EC? Are you using the SEC? Understanding what this line is doing is probably key: at com.eldrix.rsdb.model._Report.addToPublishedReports(_Report.java:319) Chuck From: <webobjects-dev-bounces+chill=gevityinc....@lists.apple.com<mailto:webobjects-dev-bounces+chill=gevityinc....@lists.apple.com>> on behalf of Mark Wardle <m...@wardle.org<mailto:m...@wardle.org>> Date: Thursday, March 31, 2016 at 12:07 PM To: WebObjects Dev Apple <webobjects-dev@lists.apple.com<mailto:webobjects-dev@lists.apple.com>> Subject: Deadlock / stack interpretation Hi all, I have a deadlocked app and I am not sure how to interpret the jstack output. jstack output is shown below. I have er.extensions.ERXEC.safeLocking=true It looks to me that in each case it is the auto-locking that is causing the problem. i.e. I am not manually locking or unlocking. The most complicated thread is WorkerThread5 which is initiating a fetch to resolve a KVC lookup to perform an aggregated function with a qualifier and so attempting a lock. Is there anything else I can do to either work out where the problem lies or solve it? Thank you, Mark Found one Java-level deadlock: ============================= "WorkerThread127": waiting for ownable synchronizer 0x00000000ec9b7b48, (a java.util.concurrent.locks.ReentrantLock$NonfairSync), which is held by "Thread-5" "Thread-5": waiting for ownable synchronizer 0x00000000f60726a0, (a java.util.concurrent.locks.ReentrantLock$NonfairSync), which is held by "WorkerThread5" "WorkerThread5": waiting for ownable synchronizer 0x00000000ec9b7b48, (a java.util.concurrent.locks.ReentrantLock$NonfairSync), which is held by "Thread-5" ===== "WorkerThread127": at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000ec9b7b48> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199) at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209) at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285) at com.webobjects.eocontrol.EOObjectStoreCoordinator.lock(EOObjectStoreCoordinator.java:420) at com.webobjects.eocontrol.EOEditingContext.lockObjectStore(EOEditingContext.java:4666) at er.extensions.eof.ERXEC.lockObjectStore(ERXEC.java:793) at com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4067) at er.extensions.eof.ERXEC.objectsWithFetchSpecification(ERXEC.java:1308) at com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4444) at er.extensions.eof.ERXFetchSpecification.fetchObjects(ERXFetchSpecification.java:155) at com.eldrix.rsdb.model._User.refetchUsers(_User.java:488) at com.eldrix.rsdb.model._User.refetchUser(_User.java:517) at com.eldrix.rsdb.model._User.refetchUser(_User.java:497) at com.eldrix.rsdb.model.User.authenticatedUser(User.java:172) [some stuff snipped]… =========== "Thread-5": at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000f60726a0> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199) at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209) at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285) at com.webobjects.eocontrol.EOEditingContext.lock(EOEditingContext.java:4617) at er.extensions.eof.ERXEC.lock(ERXEC.java:571) at er.extensions.eof.ERXEC.autoLock(ERXEC.java:703) at er.extensions.eof.ERXEC.globalIDForObject(ERXEC.java:932) at com.webobjects.eoaccess.EODatabaseContext._fireDeferredFaultWithSourceObject(EODatabaseContext.java:2370) at com.webobjects.eoaccess.EOAccessDeferredFaultHandler.createFaultForDeferredFault(EOAccessDeferredFaultHandler.java:49) at com.webobjects.eocontrol.EOCustomObject.willReadRelationship(EOCustomObject.java:1279) at er.extensions.eof.ERXGenericRecord.willReadRelationship(ERXGenericRecord.java:380) at com.webobjects.eocontrol._EOMutableKnownKeyDictionary$Initializer$_LazyGenericRecordBinding.valueInObject(_EOMutableKnownKeyDictionary.java:614) at com.webobjects.eocontrol.EOCustomObject.storedValueForKey(EOCustomObject.java:1634) at er.extensions.eof.ERXDatabaseContextDelegate.batchFetchToManyFault(ERXDatabaseContextDelegate.java:654) at er.extensions.eof.ERXDatabaseContextDelegate.databaseContextShouldFetchArrayFault(ERXDatabaseContextDelegate.java:391) at sun.reflect.GeneratedMethodAccessor62.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at com.webobjects.foundation.NSSelector._safeInvokeMethod(NSSelector.java:122) at com.webobjects.foundation._NSDelegate._perform(_NSDelegate.java:223) at com.webobjects.foundation._NSDelegate.perform(_NSDelegate.java:163) at com.webobjects.eoaccess.EODatabaseContext._fireArrayFault(EODatabaseContext.java:4236) at com.webobjects.eoaccess.EOAccessArrayFaultHandler.completeInitializationOfObject(EOAccessArrayFaultHandler.java:77) at com.webobjects.eocontrol._EOCheapCopyMutableArray.willRead(_EOCheapCopyMutableArray.java:39) at com.webobjects.eocontrol._EOCheapCopyMutableArray.count(_EOCheapCopyMutableArray.java:99) at com.webobjects.foundation.NSArray.containsObject(NSArray.java:460) at com.webobjects.eocontrol.EOCustomObject.includeObjectIntoPropertyWithKey(EOCustomObject.java:904) at er.extensions.eof.ERXGenericRecord.includeObjectIntoPropertyWithKey(ERXGenericRecord.java:1234) at com.eldrix.rsdb.model._Report.addToPublishedReports(_Report.java:319) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at com.webobjects.foundation.NSSelector._safeInvokeMethod(NSSelector.java:122) at com.webobjects.eocontrol.EOCustomObject.addObjectToPropertyWithKey(EOCustomObject.java:940) at com.webobjects.eocontrol.EOCustomObject.addObjectToBothSidesOfRelationshipWithKey(EOCustomObject.java:1028) at er.extensions.eof.ERXGenericRecord.addObjectToBothSidesOfRelationshipWithKey(ERXGenericRecord.java:584) at com.eldrix.rsdb.model._Report.createPublishedReportsRelationship(_Report.java:354) at com.eldrix.news.controllers.ReportController$ReportPublisher.run(ReportController.java:212) at java.lang.Thread.run(Thread.java:745) ======= "WorkerThread5": at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000ec9b7b48> (a java.util.concurrent.locks.ReentrantLock$NonfairSync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199) at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209) at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285) at com.webobjects.eocontrol.EOObjectStoreCoordinator.lock(EOObjectStoreCoordinator.java:420) at com.webobjects.eoaccess.EODatabaseContext.registeredDatabaseContextForModel(EODatabaseContext.java:999) at com.webobjects.eoaccess.EODatabaseContext.registeredDatabaseContextForModel(EODatabaseContext.java:1033) at er.extensions.eof.ERXEOControlUtilities._aggregateFunctionWithQualifierAndAggregateAttribute(ERXEOControlUtilities.java:862) at er.extensions.eof.ERXEOControlUtilities.objectCountWithQualifier(ERXEOControlUtilities.java:732) at com.eldrix.rsdb.model.User.numberOfUnreadMessages(User.java:342) at com.eldrix.rsdb.model.User.hasUnreadMessages(User.java:325) at sun.reflect.GeneratedMethodAccessor138.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1.methodValue(NSKeyValueCoding.java:636) at com.webobjects.foundation.NSKeyValueCoding$_MethodBinding.valueInObject(NSKeyValueCoding.java:1134) at com.webobjects.eocontrol.EOCustomObject.valueForKey(EOCustomObject.java:1498) at com.webobjects.foundation.NSKeyValueCoding$Utility.valueForKey(NSKeyValueCoding.java:447) at com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:212) at com.webobjects.eocontrol.EOCustomObject.valueForKeyPath(EOCustomObject.java:1588) at com.webobjects.foundation.NSKeyValueCodingAdditions$Utility.valueForKeyPath(NSKeyValueCodingAdditions.java:149) at com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:217) at com.webobjects.appserver.WOSession.valueForKeyPath(WOSession.java:1780) at com.webobjects.foundation.NSKeyValueCodingAdditions$Utility.valueForKeyPath(NSKeyValueCodingAdditions.java:149) at com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:217) at com.webobjects.appserver.WOComponent.valueForKeyPath(WOComponent.java:1804) at er.extensions.appserver.navigation.ERXNavigationMenuItem.resolveValue(ERXNavigationMenuItem.java:222) at er.extensions.appserver.navigation.ERXNavigationMenuItem.hasActivity(ERXNavigationMenuItem.java:229) at er.extensions.appserver.navigation.ERXNavigationMenuItem.hasActivityAndIsEnabled(ERXNavigationMenuItem.java:235) at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1.methodValue(NSKeyValueCoding.java:636) at com.webobjects.foundation.NSKeyValueCoding$_MethodBinding.valueInObject(NSKeyValueCoding.java:1134) at com.webobjects.foundation.NSKeyValueCoding$DefaultImplementation.valueForKey(NSKeyValueCoding.java:1324) at com.webobjects.appserver.WOComponent.valueForKey(WOComponent.java:1736) at com.webobjects.foundation.NSKeyValueCoding$Utility.valueForKey(NSKeyValueCoding.java:447) at com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:212) at com.webobjects.appserver.WOComponent.valueForKeyPath(WOComponent.java:1804) at com.webobjects.appserver._private.WOKeyValueAssociation.valueInComponent(WOKeyValueAssociation.java:50) at com.webobjects.appserver.WOAssociation.booleanValueInComponent(WOAssociation.java:276) at com.webobjects.appserver._private.WOConditional.evaluateCondition(WOConditional.java:60) at com.webobjects.appserver._private.WOConditional.invokeAction(WOConditional.java:85) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at com.webobjects.appserver._private.WOConditional.invokeAction(WOConditional.java:86) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WOGenericContainer.invokeAction(WOGenericContainer.java:29) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at com.webobjects.appserver._private.WOConditional.invokeAction(WOConditional.java:86) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079) at er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:168) at er.extensions.components.ERXNonSynchronizingComponent.invokeAction(ERXNonSynchronizingComponent.java:66) at com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at er.extensions.components._private.ERXWORepetition.invokeAction(ERXWORepetition.java:547) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WOGenericContainer.invokeAction(WOGenericContainer.java:29) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at com.webobjects.appserver._private.WOConditional.invokeAction(WOConditional.java:86) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079) at er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:168) at er.extensions.components.ERXNonSynchronizingComponent.invokeAction(ERXNonSynchronizingComponent.java:66) at er.extensions.appserver.navigation.ERXNavigationMenu.invokeAction(ERXNavigationMenu.java:150) at com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079) at er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:168) at er.extensions.components.ERXNonSynchronizingComponent.invokeAction(ERXNonSynchronizingComponent.java:66) at com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at er.extensions.components.conditionals.ERXWOConditional.invokeChildrenAction(ERXWOConditional.java:116) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at er.extensions.components.conditionals.ERXWOConditional.invokeAction(ERXWOConditional.java:108) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079) at er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:168) at er.extensions.components.ERXNonSynchronizingComponent.invokeAction(ERXNonSynchronizingComponent.java:66) at com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127) at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105) at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115) at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079) at er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:168) at com.webobjects.appserver.WOSession.invokeAction(WOSession.java:1357) at com.webobjects.appserver.WOApplication.invokeAction(WOApplication.java:1745) at er.extensions.appserver.ajax.ERXAjaxApplication.invokeAction(ERXAjaxApplication.java:119) at er.extensions.appserver.ERXApplication.invokeAction(ERXApplication.java:2006) at er.ajax.AjaxResponse.generateResponse(AjaxResponse.java:67) at com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedPage(WOComponentRequestHandler.java:229) at com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedSession(WOComponentRequestHandler.java:298) at com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedApplication(WOComponentRequestHandler.java:332) at com.webobjects.appserver._private.WOComponentRequestHandler._handleRequest(WOComponentRequestHandler.java:369) at com.webobjects.appserver._private.WOComponentRequestHandler.handleRequest(WOComponentRequestHandler.java:445) at er.ajax.AjaxRequestHandler.handleRequest(AjaxRequestHandler.java:20) at com.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java:1687) at er.extensions.appserver.ERXApplication.dispatchRequestImmediately(ERXApplication.java:2127) at er.extensions.appserver.ERXApplication.dispatchRequest(ERXApplication.java:2092) at com.webobjects.appserver._private.WOWorkerThread.runOnce(WOWorkerThread.java:144) at com.webobjects.appserver._private.WOWorkerThread.run(WOWorkerThread.java:226) at java.lang.Thread.run(Thread.java:745) Found 1 deadlock.
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