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#ifndef BU_C_PTR_H
#define BU_C_PTR_H
namespace Bu
{
template<class obtype, class keytype> class Cache;
/**
* Cache Pointer - Provides access to data that is held within the cache.
* This provides safe, refcounting access to data stored in the cache, with
* support for lazy loading.
*/
template<class obtype, class keytype>
class CPtr
{
friend class Bu::Cache<obtype, keytype>;
private:
CPtr( Cache<obtype, keytype> &rCache, obtype *pData,
const keytype &kId ) :
rCache( rCache ),
pData( pData ),
kId( kId )
{
rCache.incRef( kId );
}
public:
virtual ~CPtr()
{
rCache.decRef( kId );
}
obtype &operator*()
{
return *pData;
}
obtype *operator->()
{
return pData;
}
const keytype &getKey()
{
return kId;
}
private:
Bu::Cache<obtype, keytype> &rCache;
obtype *pData;
keytype kId;
};
};
#endif
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