/*******************************************************************************
* BRefData.h Referenced data storage
* T.Barnaby, Beam Ltd, 6/10/94
* Copyright (c) 2012 All Right Reserved, Beam Ltd, http://www.beam.ltd.uk
*******************************************************************************
*/
#ifndef BREFDATA_H
#define BREFDATA_H 1
#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.
class BRefData {
public:
BRefData();
BRefData(int len);
BRefData(const BRefData& refData);
~BRefData();
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
BRefData& operator=(const BRefData& refData);
void setLen(int len); ///< Set the length in bytes. Note should only be used if orefCount = 1
private:
BAtomicCount orefCount; ///< The reference count, how many users
int olen; ///< The actual length of data in oData
void* odata; ///< Pointer to the data
};
#endif