Es++ Class: FileDescriptor

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Source code

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 * Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
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 *    derived from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 *
 *  FileDescriptor.h
 *
 *****************************************************************************/

#pragma once

#include <es++/Object.h>
#include <es++/Exception.h>

namespace Es {

class FileDescriptor :public Object {
private:
  int fd;

public:
  FileDescriptor(int fd = INVALID_FD)
  :fd(fd)
  {
  }

  ~FileDescriptor()
  {
    close();
  }

  void close()
  {
    if (fd != INVALID_FD) {
      ::close(fd);
      fd = INVALID_FD;
    }
  }

  int getFD()
  {
    return fd;
  }

  void setFD(int d)
  {
    if (d == INVALID_FD) {
      throw Es::IException("Invalid argument");
    }
    fd = d;
  }

  ssize_t read(void* buffer, size_t bsize)
  {
    if (buffer == NULL || bsize <=0) {
      throw Es::IException("Invalid argument");
    }
    return ::read(fd, buffer, bsize);
  }

  ssize_t write(void* buffer, size_t bsize)
  {
    return ::write(fd, buffer, bsize);
  }

};
}


Last modified: 27 July 2017

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