Adding a tracepoint in code

A user-defined tracepoint is a point within the code of a C UDR that can send special information about the current executing state of that routine.

1. Choose the trace class for the tracepoint.
2. Put trace messages into the UDR code.

   A tracepoint contains a trace message whose text you want to output. You assign to each tracepoint a trace class and a threshold level. If a tracepoint threshold is not greater than the current trace level, the DataBlade API writes the associated trace message to the trace output file.

3. Turn tracing on with an appropriate trace level for the tracepoints that you want to execute.

   You assign the current trace level when you turn on tracing with the mi_tracelevel_set() function.