MemoryChannel.h

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/*
 * Copyright (C) 2015 Niek Linnenbank
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef __LIBIPC_MEMORYCHANNEL_H
#define __LIBIPC_MEMORYCHANNEL_H
 
#include <FreeNOS/System.h>
#include <Types.h>
#include "Channel.h"
 
class MemoryChannel : public Channel
{
  private:
 
    typedef struct RingHead
    {
        Size index;
    }
    RingHead;
 
  public:
 
    MemoryChannel(const Mode mode, const Size messageSize);
 
    virtual ~MemoryChannel();
 
    Result setVirtual(const Address data,
                      const Address feedback,
                      const bool hardReset = true);
 
    Result setPhysical(const Address data,
                       const Address feedback,
                       const bool hardReset = true);
 
    Result unmap();
 
    virtual Result read(void *buffer);
 
    virtual Result write(const void *buffer);
 
    virtual Result flush();
 
    bool operator == (const MemoryChannel & ch) const
    {
        return false;
    }
 
    bool operator != (const MemoryChannel & ch) const
    {
        return false;
    }
 
  private:
 
    Result reset(const bool hardReset);
 
    Result flushPage(const Address page) const;
 
  private:
 
    const Size m_maximumMessages;
 
    Arch::IO m_data;
 
    Arch::IO m_feedback;
 
    RingHead m_head;
};
 
#endif /* __LIBIPC_MEMORYCHANNEL_H */