[#UDIG-1931] BlackbordImpl Threading problems - jira.codehaus.org

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Type: Bug
Status: Reopened
Priority: Major
Resolution: Unresolved
Affects Version/s: UDIG 1.3.1
Fix Version/s: UDIG 1.3.2
Component/s: framework
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Description

Methods get, put, remove, initialize, clear and flush have access to the internal HashMap "blackboard".

As an effect the user can't export Images from Map (ExportImageWizard) because of an

IllegalArgumentException : "no null" constraint violated

EcoreUtils.copy() fails because a EMF List has null objects which can't be inserted into new EMS List. See ApplicationGIS.drawMap() -> exportMap

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Frank Gasdorf added a comment - 29/Aug/12 3:22 PM

created pull request : https://github.com/uDig/udig-platform/pull/132

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Frank Gasdorf added a comment - 29/Aug/12 3:22 PM created pull request : https://github.com/uDig/udig-platform/pull/132

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Frank Gasdorf added a comment - 11/Feb/13 4:03 PM

deadlock when testing walkthrough 2 (page HoleCutter.html ):
{code}
Thread [Worker-0] (Suspended)
Unsafe.park(boolean, long) line: not available [native method]
LockSupport.park(Object) line: 156
ReentrantLock$NonfairSync(AbstractQueuedSynchronizer).parkAndCheckInterrupt() line: 811
ReentrantLock$NonfairSync(AbstractQueuedSynchronizer).acquireQueued(AbstractQueuedSynchronizer$Node, int) line: 842
ReentrantLock$NonfairSync(AbstractQueuedSynchronizer).acquire(int) line: 1178
ReentrantLock$NonfairSync.lock() line: 186
ReentrantLock.lock() line: 262
BlackboardImpl.get(String) line: 212
EditToolHandler.getLock() line: 358
EditToolHandler.getCurrentState() line: 347
SelectFeatureBehaviour.isValid(EditToolHandler, MapMouseEvent, EventType) line: 141
EventBehaviourCommand.execute(IProgressMonitor) line: 54
CommandManager$Executor.execute(Command, IProgressMonitor) line: 395
CommandManager$Executor.run(IProgressMonitor, CommandManager$Request) line: 326
CommandManager$Executor.run(IProgressMonitor) line: 312
Worker.run() line: 54

Thread [pool-1-thread-1] (Suspended)
Unsafe.park(boolean, long) line: not available [native method]
LockSupport.park(Object) line: 156
AbstractQueuedSynchronizer$ConditionObject.await() line: 1987
LinkedBlockingQueue<E>.take() line: 399
ThreadPoolExecutor.getTask() line: 947
ThreadPoolExecutor$Worker.run() line: 907
Thread.run() line: 680
{code}

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Frank Gasdorf added a comment - 11/Feb/13 4:03 PM deadlock when testing walkthrough 2 (page HoleCutter.html ): {code} Thread [Worker-0] (Suspended) Unsafe.park(boolean, long) line: not available [native method] LockSupport.park(Object) line: 156 ReentrantLock$NonfairSync(AbstractQueuedSynchronizer).parkAndCheckInterrupt() line: 811 ReentrantLock$NonfairSync(AbstractQueuedSynchronizer).acquireQueued(AbstractQueuedSynchronizer$Node, int) line: 842 ReentrantLock$NonfairSync(AbstractQueuedSynchronizer).acquire(int) line: 1178 ReentrantLock$NonfairSync.lock() line: 186 ReentrantLock.lock() line: 262 BlackboardImpl.get(String) line: 212 EditToolHandler.getLock() line: 358 EditToolHandler.getCurrentState() line: 347 SelectFeatureBehaviour.isValid(EditToolHandler, MapMouseEvent, EventType) line: 141 EventBehaviourCommand.execute(IProgressMonitor) line: 54 CommandManager$Executor.execute(Command, IProgressMonitor) line: 395 CommandManager$Executor.run(IProgressMonitor, CommandManager$Request) line: 326 CommandManager$Executor.run(IProgressMonitor) line: 312 Worker.run() line: 54 Thread [pool-1-thread-1] (Suspended) Unsafe.park(boolean, long) line: not available [native method] LockSupport.park(Object) line: 156 AbstractQueuedSynchronizer$ConditionObject.await() line: 1987 LinkedBlockingQueue<E>.take() line: 399 ThreadPoolExecutor.getTask() line: 947 ThreadPoolExecutor$Worker.run() line: 907 Thread.run() line: 680 {code}

BlackbordImpl Threading problems

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