CGII/framework/include/cgv/data/ref_counted.h

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2018-05-17 13:50:03 +00:00
#pragma once
namespace cgv {
namespace data {
class ref_ptr_tag;
/** if you derive your class from this class, a ref_ptr will do reference counting in the inhereted
ref_count member. */
class ref_counted
{
private:
/// keep a mutable reference count to allow ref counted points to const instances
mutable int ref_count;
protected:
friend class ref_ptr_tag;
/// constructor initializes the count to 0
inline ref_counted() : ref_count(0) {}
/// write access is also const to allow ref counted pointers to const instances
inline void set_ref_count(int c) const { ref_count = c; }
public:
/// read access to current count
inline int get_ref_count() const { return ref_count; }
};
}
}