ConditionVar.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2014  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_ConditionVar_hxx
#define __ccxx_ConditionVar_hxx

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

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

namespace ccxx {

class Mutex; // fwd decl

class COMMONCPP_API ConditionVar
{
 public:

  ConditionVar();

  ~ConditionVar();

  bool wait(Mutex& mutex, uint_t msec = FOREVER);

  void notify();

  void notifyAll();

  static const uint_t FOREVER;

 private:

#ifdef CCXX_OS_WINDOWS
  HANDLE _sem;
  int _waitersCount;
  CRITICAL_SECTION _waitersLock;
  HANDLE _waitersDone;
  bool _broadcast;
#else
  pthread_cond_t _cond;
#endif

  CCXX_COPY_DECLS(ConditionVar);
};

} // namespace ccxx

#endif // __ccxx_ConditionVar_hxx