AsyncIOPoller.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2009  Mark A Lindner

   This file is part of commonc++.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   ---------------------------------------------------------------------------
*/

#ifndef __ccxx_AsyncIOPoller_hxx
#define __ccxx_AsyncIOPoller_hxx

#include <commonc++/AsyncIOTask.h++>

#ifdef CCXX_OS_POSIX
#include <aio.h>
#endif

namespace ccxx {

class COMMONCPP_API AsyncIOPoller
{
  public:

  AsyncIOPoller();

  ~AsyncIOPoller();

  void addTask(AsyncIOTask *task);

  void removeTask(AsyncIOTask *task);

  void removeAllTasks();

  uint_t getTaskCount() const throw();

  bool poll(int timeout = 0) throw();

  private:

  class AsyncIOTaskList; // fwd decl
  AsyncIOTaskList *_tasks;
#ifdef CCXX_OS_WINDOWS
  HANDLE *_cblist;
#else
  struct aiocb **_cblist;
#endif
  uint_t _cbcount;
  bool _dirty;
};

}; // namespace ccxx

#endif // __ccxx_AsyncIOTask_hxx

/* end of header file */