/// <summary>
/// Returns the filtered array of the ReceiverInfo instances.
/// </summary>
/// <param name="arrayOfReceiverInfo">The list of receivers being filtered out.</param>
/// <param name="iMessage">The invocation.</param>
/// <param name="resultCollector">The Result Collector obtaining the list of receivers. Is used for debugging purposes only.</param>
public void GetListOfReceivers(out object[] arrayOfReceiverInfo, IMessage iMessage, ResultCollector resultCollector)
{
arrayOfReceiverInfo = null;
try
{
using (ReaderAutoLocker reader = new ReaderAutoLocker(this._readerWriterLock))
{
// check whether they were cached
if (this._cachedReceiversInfoArray == null)
{
this._cachedReceiversInfoArray = new object[this._receivers.Values.Count];
this._receivers.Values.CopyTo(this._cachedReceiversInfoArray, 0);
}
// get the cached array
arrayOfReceiverInfo = this._cachedReceiversInfoArray;
// and drive it thru the filter
IMulticastFilter iMulticastFilter = Dispatcher.GetCurrentFilter();
if (iMulticastFilter == null)
{
iMulticastFilter = this.IMulticastFilter;
}
if (iMulticastFilter != null)
{
// LOG:
BinaryLogWriter binaryLogWriter = GenuineLoggingServices.BinaryLogWriter;
if (binaryLogWriter != null && binaryLogWriter[LogCategory.BroadcastEngine] > 0)
{
binaryLogWriter.WriteBroadcastEngineEvent(LogCategory.BroadcastEngine, "Dispatcher.GetListOfReceivers",
LogMessageType.BroadcastFilterCalled, null, null, null, null,
GenuineUtility.CurrentThreadId, Thread.CurrentThread.Name,
null, null, false, this, resultCollector, false, null,
iMulticastFilter.GetType().ToString(), null,
"The broadcast filter is called. The type of the filter: {0}.", iMulticastFilter.GetType().ToString());
}
arrayOfReceiverInfo = iMulticastFilter.GetReceivers(arrayOfReceiverInfo, iMessage);
}
}
}
catch (Exception ex)
{
// LOG:
BinaryLogWriter binaryLogWriter = GenuineLoggingServices.BinaryLogWriter;
if (binaryLogWriter != null && binaryLogWriter[LogCategory.BroadcastEngine] > 0)
{
binaryLogWriter.WriteBroadcastEngineEvent(LogCategory.BroadcastEngine, "Dispatcher.GetListOfReceivers",
LogMessageType.BroadcastFilterCalled, ex, null, null, null,
GenuineUtility.CurrentThreadId, Thread.CurrentThread.Name,
null, null, false, this, resultCollector, false, null,
null, null,
"The exception occurred while calling the broadcast filter.");
}
}
}
/// <summary>
/// Specifies the filter which will be used in the current thread.
/// Returns the preceding filter specified in the current thread.
/// </summary>
/// <param name="iMulticastFilter">The filter being set.</param>
/// <returns>The previous filter.</returns>
public static IMulticastFilter SetCurrentFilter(IMulticastFilter iMulticastFilter)
{
LocalDataStoreSlot localDataStoreSlot = Thread.GetNamedDataSlot(OccupiedThreadSlots.DispatcherFilterUsed);
object previousDataSlotValue = Thread.GetData(localDataStoreSlot);
Thread.SetData(localDataStoreSlot, iMulticastFilter);
return(previousDataSlotValue as IMulticastFilter);
}
/// <summary>
/// Constructs an instance of the DispatcherFilterKeeper class.
/// </summary>
/// <param name="iMulticastFilter">The filter supporting IMulticastFilter interface.</param>
public DispatcherFilterKeeper(IMulticastFilter iMulticastFilter)
{
this._previousIMulticastFilter = Dispatcher.SetCurrentFilter(iMulticastFilter);
}
/// <summary>
/// Constructs an instance of the DispatcherFilterKeeper class.
/// </summary>
/// <param name="iMulticastFilter">The filter supporting IMulticastFilter interface.</param>
public DispatcherFilterKeeper(IMulticastFilter iMulticastFilter)
{
this._previousIMulticastFilter = Dispatcher.SetCurrentFilter(iMulticastFilter);
}
/// <summary>
/// Specifies the filter which will be used in the current thread.
/// Returns the preceding filter specified in the current thread.
/// </summary>
/// <param name="iMulticastFilter">The filter being set.</param>
/// <returns>The previous filter.</returns>
public static IMulticastFilter SetCurrentFilter(IMulticastFilter iMulticastFilter)
{
LocalDataStoreSlot localDataStoreSlot = Thread.GetNamedDataSlot(OccupiedThreadSlots.DispatcherFilterUsed);
object previousDataSlotValue = Thread.GetData(localDataStoreSlot);
Thread.SetData(localDataStoreSlot, iMulticastFilter);
return previousDataSlotValue as IMulticastFilter;
}
