Intel Threading Building Blocks

Class get_next_packet : public tbb::filter

The filter class get_next_packet (Example 11-44) reads each packet from a packet trace in the input file.

Example 11-44. Filter to get the next packet

class get_next_packet : public tbb::filter {
    istream& in_file;
public:
    get_next_packet (ifstream& file) : in_file (file),
                     filter (true) {}
    void* operator() (void*) {
        packet_trace* packet = new packet_trace ();
        in_file >> *packet;
        if (packet->packetNic == empty) {
            delete packet;
            return NULL;
        }
        return packet;
    }
};