The Power Estimation Capability exports a certain functionality to its Clients and thus, acts as a Service. The functionality exported by the Power Estimation Capability ables the client to access the Power, Area and Time information calculated by the Service. The Service exports the following interface :

class PowerClientInterface {
 
public:
        // interface to client
        // power interface
 
        virtual float GetDynEnergy () = 0 ;
        virtual float GetStaticEnergy () = 0 ;
        virtual float GetTotalEnergy () = 0  ;
 
        virtual float GetDynPower () = 0 ;
        virtual float GetStaticPower () = 0 ;
        virtual float GetTotalPower () = 0 ;
 
        // Display fucntions
        virtual void DisplayOutputStats () = 0 ;
 
};      // end class PowerClientInterface

As can be seen, using this interface, the Client can access the Energy/Power dissipated for the particular Cache. And the function DisplayOutputStats() permits the client to display summarized information. The same fact is illustrated in the figure below: