public static Func <MemoryMappedViewStream, object, Internal.OperationStatus> Wrap(SynchronousReadingDelegateWithParameterAndResult externalDelegate)
{
return((MemoryMappedViewStream stream, object parameter) =>
{
if (externalDelegate == null)
{
return Internal.OperationStatus.Completed;
}
return (Internal.OperationStatus)externalDelegate.Invoke(stream.AsRandomAccessStream(), parameter);
});
}
/// <summary>
/// Reads and removes a message from the queue. This method is thread-safe.
/// </summary>
/// <param name="readingDelegate">Custom delegate to read using message's stream.</param>
/// <param name="parameter">Delegate parameter object.</param>
/// <param name="timeout">Operation timeout.</param>
/// <returns>
/// ChannelStateOperationResult with ChannelState and OperationStatus.Completed, OperationStatus.QueueIsEmpty, OperationStatus.Timeout,
/// OperationStatus.DelegateFailed, OperationStatus.RequestedLengthIsGreaterThanLogicalAddressSpace, OperationStatus.RequestedLengthIsGreaterThanVirtualAddressSpace,
/// or any OperationStatus returned by readingDelegate.
/// </returns>
public ChannelStateOperationResult Read(SynchronousReadingDelegateWithParameterAndResult readingDelegate, object parameter, TimeSpan timeout)
{
return(new ChannelStateOperationResult(_internal.Read(DelegateHelper.Wrap(readingDelegate), parameter, timeout)));
}