null_shared_mem.h

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// Copyright 2011 Google Inc.

#ifndef PAGESPEED_KERNEL_BASE_NULL_SHARED_MEM_H_
#define PAGESPEED_KERNEL_BASE_NULL_SHARED_MEM_H_

#include <cstddef>
#include "pagespeed/kernel/base/abstract_shared_mem.h"
#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/string.h"

namespace net_instaweb {

class MessageHandler;

class NullSharedMem : public AbstractSharedMem {
 public:
  NullSharedMem();
  virtual ~NullSharedMem();

  virtual size_t SharedMutexSize() const;

  virtual AbstractSharedMemSegment* CreateSegment(
      const GoogleString& name, size_t size, MessageHandler* handler);

  virtual AbstractSharedMemSegment* AttachToSegment(
      const GoogleString& name, size_t size, MessageHandler* handler);

  virtual void DestroySegment(const GoogleString& name,
                              MessageHandler* handler);

  virtual bool IsDummy() { return true; }

 private:
  
};

}  

#endif