J9SegmentCache.hpp

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#ifndef J9SEGMENT_CACHE_H
#define J9SEGMENT_CACHE_H

#pragma once

#include "env/J9SegmentProvider.hpp"

namespace J9 {

class J9SegmentCache : public J9SegmentProvider
   {
public:

   J9SegmentCache(size_t cachedSegmentSize, J9SegmentProvider &backingProvider);
   J9SegmentCache(J9SegmentCache &donor);

   ~J9SegmentCache() throw();

   virtual J9MemorySegment& request(size_t requiredSize);
   virtual void release(J9MemorySegment& segment) throw();
   virtual size_t getPreferredSegmentSize() { return _cachedSegmentSize; }

   J9SegmentCache &ref() { return *this; }

private:
   size_t _cachedSegmentSize;
   J9SegmentProvider &_backingProvider;
   J9MemorySegment *_firstSegment;
   bool _firstSegmentInUse;
   };

}

#endif // J9SEGMENT_CACHE_H