Taps

There are several tools implemented in basic library to allow complex data flows to be composed. The first is a simple process which `taps' the data flowing through a pipe and puts it out into another data pipe. This tap process is shown in Figure 3.

There is a helper function which constructs a tap with the appropriate types. `DPTap<>' takes one argument, the destination to put the tapped data. The example opens an output stream on stdout, to which it sends all the processed data as well as saving it to the file `out.dat'. Figure 4 shows a graphical representation of the stream created.

DPOFileC<RealT> monitor("-") ;
DPOffsetScale(2.0,3.0) » DPRunningAverage(1.0,5) » DPTap(monitor) » DPOFileC<RealT>("out.dat");

Figure 3:Data Tap.

Figure 4:Tap example.

Normal classes:

DPIOTapC	Tap handle.
DPTapC	Tap process.

Normal functions:

DPTap(const DPOPortC &)

Develop classes:

DPIOTapBodyC	Tap body
DPTapBodyC	Tap process body.