library/cpp/messagebus/use_count_checker.h


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#pragma once 
 
#include <util/generic/refcount.h> 
 
class TUseCountChecker { 
private: 
    TAtomicCounter Counter; 

public: 
    TUseCountChecker(); 
    ~TUseCountChecker(); 
    void Inc(); 
    void Dec(); 
}; 
 
class TUseCountHolder { 
private: 
    TUseCountChecker* CurrentChecker; 

public: 
    TUseCountHolder(); 
    explicit TUseCountHolder(TUseCountChecker* currentChecker); 
    TUseCountHolder& operator=(TUseCountHolder that); 
    ~TUseCountHolder(); 
    void Swap(TUseCountHolder&); 
    void Reset(); 
};