unix-fd-reader.h

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2010 The Boeing Company
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Tom Goff <thomas.goff@boeing.com>
 */
 
#ifndef UNIX_FD_READER_H
#define UNIX_FD_READER_H
 
#include <stdint.h>
 
#include "callback.h"
#include "system-thread.h"
#include "event-id.h"
 
namespace ns3 {
 
class FdReader : public SimpleRefCount<FdReader>
{
public:
  FdReader ();
  virtual ~FdReader ();
 
  void Start (int fd, Callback<void, uint8_t *, ssize_t> readCallback);
 
  void Stop (void);
 
protected:
 
  struct Data
  {
    Data () : m_buf (0), m_len (0)
    {}
    Data (uint8_t *buf, ssize_t len) : m_buf (buf), m_len (len)
    {}
    uint8_t *m_buf;
    ssize_t m_len;
  };
 
  virtual FdReader::Data DoRead (void) = 0;
 
  int m_fd;
 
private:
 
  void Run (void);
  void DestroyEvent (void);
 
  Callback<void, uint8_t *, ssize_t> m_readCallback;
 
  Ptr<SystemThread> m_readThread;
 
  int m_evpipe[2];
  bool m_stop;
 
  EventId m_destroyEvent;
};
 
} // namespace ns3
 
#endif /* UNIX_FD_READER_H */