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