1
Vote

Threading issue

description

I'm seeing this on a fairly regular basis:
 
at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
at System.Collections.Generic.Dictionary2.Insert(TKey key, TValue value, Boolean add)
at System.Collections.Generic.Dictionary
2.Add(TKey key, TValue value)
at PrintSpooler.PrinterSpoolerRepository.printerMonitor_PrintJobEvent(Object sender, PrintJobEventArgs args)
at PrinterQueueWatch.PrinterMonitorComponent.OnJobEvent(PrintJobEventArgs e)
at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)
at System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(System.Runtime.Remoting.Messaging.Message, Boolean)
at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(System.Object, System.Runtime.Remoting.Proxies.MessageData ByRef)
at PrinterQueueWatch.PrinterMonitorComponent+JobEvent.EndInvoke(System.IAsyncResult)
at PrinterQueueWatch.EventQueue.OnEndInvokeJobEvent(System.IAsyncResult)
at System.Runtime.Remoting.Messaging.AsyncResult.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage)
at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage, System.Runtime.Remoting.Messaging.IMessageSink)
at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.DoAsyncCall()
at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.ThreadPoolCallBack(System.Object)
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(System.Object)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()

comments

Merrion wrote Feb 21, 2012 at 5:27 PM

Yes - it needs to be changed to use the Task Parallel Library "Concurrent Dictionary".

wrote Feb 14, 2013 at 6:55 PM