/*
Copyright (c) Microsoft Corporation

All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in 
compliance with the License.  You may obtain a copy of the License 
at http://www.apache.org/licenses/LICENSE-2.0   


THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF 
TITLE, FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABLITY OR NON-INFRINGEMENT.  


See the Apache Version 2.0 License for specific language governing permissions and 
limitations under the License. 

*/

#pragma once
#include <outputchannel.h>
#include <fifochannel.h>

class FifoOutputChannel: public OutputChannel
{ 
public:
    FifoOutputChannel(UInt32 portNum, DryadVertexProgram* vertex, 
        WorkQueue *workQueue, RChannelWriter* outputChannel, 
        TransformType tType);
    void Stop();
    
    void SetInitialSizeHint(UInt64 hint);
    const char* GetURI();

private:
    FifoChannel *m_fifoChannel;
    RChannelReaderHolderRef   m_fifoReader;
    RChannelWriterHolderRef   m_fifoWriter;
    RChannelWriter* m_origWriter;
    void MakeFifo(UInt32 fifoLength, WorkQueue* workQueue);
};