diagnostic-buffer-provider.hpp

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/*
  DIAGNOSTIC-BUFFER-PROVIDER.hpp  -  helper for testing against the BufferProvider interface

  Copyright (C)         Lumiera.org
    2011,               Hermann Vosseler <Ichthyostega@web.de>

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

  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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef STEAM_ENGINE_DIAGNOSTIC_BUFFR_PROVIDER_H
#define STEAM_ENGINE_DIAGNOSTIC_BUFFR_PROVIDER_H


#include "lib/error.hpp"
#include "lib/depend.hpp"
#include "lib/util.hpp"
#include "steam/engine/type-handler.hpp"
#include "steam/engine/buffer-provider.hpp"
#include "lib/nocopy.hpp"

#include <memory>


namespace steam {
namespace engine {
  
  namespace error = lumiera::error;
  
  
  class TrackingHeapBlockProvider;
  
  
  /****************************************************************/
  class DiagnosticBufferProvider
    : util::NonCopyable
    {
      
      std::unique_ptr<TrackingHeapBlockProvider>   pImpl_;
      static lib::Depend<DiagnosticBufferProvider> diagnostics;
      
      
      TrackingHeapBlockProvider& reset();
      bool isCurrent (BufferProvider const&);
      
      
      DiagnosticBufferProvider();
     ~DiagnosticBufferProvider();
     
      friend class lib::DependencyFactory<DiagnosticBufferProvider>;
     
    public:
      static BufferProvider& build();
      
      
      static DiagnosticBufferProvider&
      access (BufferProvider const& );
      
      
      
      
      /* === diagnostic API === */
      
      bool buffer_was_used (uint bufferID)  const;
      bool buffer_was_closed (uint bufferID) const;
      void* accessMemory (uint bufferID)   const;
      bool all_buffers_released()          const;
      
      
      
    private:
      
    };
  
  
  
}} // namespace steam::engine
#endif