public static Func <MemoryMappedViewStream, object, Internal.OperationStatus> Wrap(SynchronousWritingDelegateWithParameterAndResult externalDelegate)
{
return((MemoryMappedViewStream stream, object parameter) =>
{
if (externalDelegate == null)
{
return Internal.OperationStatus.Completed;
}
return (Internal.OperationStatus)externalDelegate.Invoke(stream.AsRandomAccessStream(), parameter);
});
}
/// <summary>
/// Adds new message to the queue. This method is thread-safe.
/// </summary>
/// <param name="writingDelegate">Custom delegate to write using message's stream.</param>
/// <param name="parameter">Delegate parameter object.</param>
/// <param name="length">
/// Specifies how much memory will be allocated for new message.
/// Delegate will receive a stream with capacity limited by this parameter, but it is not forced to use all allocated space.
/// </param>
/// <param name="timeout">Operation timeout.</param>
/// <returns>
/// ChannelStateOperationResult with ChannelState and OperationStatus.Completed, OperationStatus.Timeout,
/// OperationStatus.DelegateFailed, OperationStatus.RequestedLengthIsGreaterThanLogicalAddressSpace,
/// OperationStatus.RequestedLengthIsGreaterThanVirtualAddressSpace, OperationStatus.OutOfSpace or any OperationStatus returned by writingDelegate.
/// </returns>
public ChannelStateOperationResult Write(SynchronousWritingDelegateWithParameterAndResult writingDelegate, object parameter, long length, TimeSpan timeout)
{
return(new ChannelStateOperationResult(_internal.Write(DelegateHelper.Wrap(writingDelegate), parameter, length, timeout)));
}
