Table-Driven Trace Record Formatting
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02
In a VM/SP operating system, in order to do operations such as multi- tasking, and sharing of common storage by a group of virtual machines, one needs a way to collect trace information. This must be done in a way that produces current and identifiable information. Tracing must be done so as to allow tracing to both an internal and external trace table. Such a trace table can be implemented as follows: The external trace is invoked by the CPTRAP function in CP and the ETRACE command under GCS (that is, Group Control System; see IBM manual SC24-5249 for a definition of terms). CPTRAP records the trace data passed to it by GCS. The TRAPRED function of CP can be used to format the trace entries collected by CPTRAP.