コード例 #1
0
        private static void AddListenerComponent(EventLogInternal component, string compMachineName, string compLogName) {
            lock (InternalSyncObject) {
                Debug.WriteLineIf(CompModSwitches.EventLog.TraceVerbose, "EventLog::AddListenerComponent(" + compLogName + ")");

                LogListeningInfo info = (LogListeningInfo) listenerInfos[compLogName];
                if (info != null) {
                    Debug.WriteLineIf(CompModSwitches.EventLog.TraceVerbose, "EventLog::AddListenerComponent: listener already active.");
                    info.listeningComponents.Add(component);
                    return;
                }

                info = new LogListeningInfo();
                info.listeningComponents.Add(component);

                info.handleOwner = new EventLogInternal(compLogName, compMachineName);

                // tell the event log system about it
                info.waitHandle = new AutoResetEvent(false); 
                bool success = UnsafeNativeMethods.NotifyChangeEventLog(info.handleOwner.ReadHandle, info.waitHandle.SafeWaitHandle);
                if (!success)
                    throw new InvalidOperationException(SR.GetString(SR.CantMonitorEventLog), SharedUtils.CreateSafeWin32Exception());

                info.registeredWaitHandle = ThreadPool.RegisterWaitForSingleObject(info.waitHandle, new WaitOrTimerCallback(StaticCompletionCallback), info, -1, false);

                listenerInfos[compLogName] = info;
            }
        }
 private static void AddListenerComponent(EventLogInternal component, string compMachineName, string compLogName)
 {
     lock (InternalSyncObject)
     {
         LogListeningInfo state = (LogListeningInfo) listenerInfos[compLogName];
         if (state != null)
         {
             state.listeningComponents.Add(component);
         }
         else
         {
             state = new LogListeningInfo();
             state.listeningComponents.Add(component);
             state.handleOwner = new EventLogInternal(compLogName, compMachineName);
             state.waitHandle = new AutoResetEvent(false);
             if (!Microsoft.Win32.UnsafeNativeMethods.NotifyChangeEventLog(state.handleOwner.ReadHandle, state.waitHandle.SafeWaitHandle))
             {
                 throw new InvalidOperationException(SR.GetString("CantMonitorEventLog"), SharedUtils.CreateSafeWin32Exception());
             }
             state.registeredWaitHandle = ThreadPool.RegisterWaitForSingleObject(state.waitHandle, new WaitOrTimerCallback(EventLogInternal.StaticCompletionCallback), state, -1, false);
             listenerInfos[compLogName] = state;
         }
     }
 }