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;
}
}
}