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/******************************************************************************* * BRefData.h Referenced data storage * T.Barnaby, Beam Ltd, 6/10/94

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******************************************************************************* */ #ifndef BREFDATA_H #define BREFDATA_H 1

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#include <BAtomicCount.h> /// Referenced data storage. This is Thread safe to a degree. The reference counting is /// protected. However, setLen() is not and should be protected at a higher level.

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class BRefData { public: BRefData(); BRefData(int len); BRefData(const BRefData& refData); ~BRefData();

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BRefData* copy(); ///< Create a copy of this reference for writing, if necessary BRefData* addRef(); ///< Increment the reference counter int deleteRef(); ///< Decrement the reference counter char* data(){ return (char*)odata; } ///< Return the raw data pointer int len(){ return olen; } ///< Return the length in bytes

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BRefData& operator=(const BRefData& refData);

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void setLen(int len); ///< Set the length in bytes. Note should only be used if orefCount = 1

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private:

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BAtomicCount orefCount; ///< The reference count, how many users int olen; ///< The actual length of data in oData void* odata; ///< Pointer to the data

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}; #endif