fd-reader.h

Go to the documentation of this file.

/*
 * 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 FD_READER_H
#define FD_READER_H
 
#include "callback.h"
#include "event-id.h"
 
#include <cstdint>
#include <thread>
 
#ifdef __WIN32__
#include <BaseTsd.h>
 
typedef SSIZE_T ssize_t;
#endif
 
namespace ns3
{
 
class FdReader : public SimpleRefCount<FdReader>
{
  public:
    FdReader();
    virtual ~FdReader();
 
    void Start(int fd, Callback<void, uint8_t*, ssize_t> readCallback);
 
    void Stop();
 
#ifdef __WIN32__
    static bool winsock_initialized;
#endif
  protected:
    struct Data
    {
        Data()
            : m_buf(nullptr),
              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() = 0;
 
    int m_fd;
 
  private:
    void Run();
    void DestroyEvent();
 
    Callback<void, uint8_t*, ssize_t> m_readCallback;
 
    std::thread m_readThread;
 
    int m_evpipe[2];
    bool m_stop;
 
    EventId m_destroyEvent;
};
 
} // namespace ns3
 
#endif /* FD_READER_H */