48   TraceResolver *CreateTraceResolver (TraceContext const &context);

    48   TraceResolver *CreateTraceResolver (TraceContext const &context);

    49 

    49 

    50   bool IsEmpty (void);

    50   bool IsEmpty (void);

    51   bool Enqueue (const Packet& p);

    51   bool Enqueue (const Packet& p);

    52   bool Dequeue (Packet &p);

    52   bool Dequeue (Packet &p);

    53 

    54 

    54   void DequeueAll (void);

    55   void DequeueAll (void);

    55   uint32_t GetNPackets (void);

    56   uint32_t GetNPackets (void);

    56   uint32_t GetNBytes (void);

    57   uint32_t GetNBytes (void);

    57 

    58 

    87 #endif

    88 #endif

    88 

    89 

    89 private:

    90 private:

    90   virtual bool DoEnqueue (const Packet& p) = 0;

    91   virtual bool DoEnqueue (const Packet& p) = 0;

    91   virtual bool DoDequeue (Packet &p) = 0;

    92   virtual bool DoDequeue (Packet &p) = 0;

    92 

    94 

    93 protected:

    95 protected:

    94   // called by subclasses to notify parent of packet drops.

    96   // called by subclasses to notify parent of packet drops.

    95   void Drop (const Packet& p);

    97   void Drop (const Packet& p);

    96 

    98