semaphore.hpp

"More for C++" is a class library that provides some features that are usually common for object ori

//
//  This file is part of the "More for C++" library
//
//  Copyright (c) 1999-2003 by Thorsten Goertz ([e-mail])
//
//  The "More for C++" library is free software; you can redistribute it and/or
//  modify it under the terms of the license that comes with this package.
//
//  Read "license.txt" for more details.
//
//  THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
//  WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES
//  OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

////////////////////////////////////////////////////////////////////////////////

#ifndef MORE_OS_SEMAPHORE_HPP
#define MORE_OS_SEMAPHORE_HPP

////////////////////////////////////////////////////////////////////////////////

#include <more/pointer.hpp>
#include <more/util/guarded.hpp>

////////////////////////////////////////////////////////////////////////////////

namespace more
{
  namespace os
  {
    class Semaphore: public more::util::TimelyGuarded
    {
      public:
        class TimeOut: public more::util::TimelyGuarded::TimeOut
        {
          public:
            virtual operator const char* ( ) const;
        };

        static p<Semaphore> create( size_t nNoOfResources = 1 );
        virtual void acquire( size_t nMillisecondsToWait ) throw( TimeOut ) = 0;
        virtual void acquire( ) = 0;
        virtual void release( ) = 0;

      protected:
        virtual ~Semaphore( );
    };
  }
}

////////////////////////////////////////////////////////////////////////////////

#endif