What is a predefined probe?
This is just a UAL containing probes written by OC Systems for a specific purpose. They are generally more complex than ones you would write yourself, and are designed to work on any program that can be probed. Most of these probes include a Java GUI to simplify parameterization of the probe for your specific program, such as specifying the functions to be probed. All predefined probes are in $APROBE/ual_lib/*.ual; the source code is $APROBE/probes/*.apc. The documentation for these probes is in Appendix D of the User’s Guide.