Advanced Monitoring Features › Backtrace Facility › Access the Source Listing Backtrace › Read the Source Listing Backtrace

Read the Source Listing Backtrace

To clearly show the program's execution path statement-by-statement, source statements that were executed from the current backtrace position are highlighted. However, when you specify a non-backtrace Source Listing option or use PF7 or PF8 to reposition the Source Listing Backtrace, the highlighting of executed statements is temporarily suspended until a backtrace PF key is entered.

When in source listing backtrace mode, the current backtrace position always appears on the line just above the first source statement. This line displays as follows:

======>BACKTRACE AT #nnnnn (nnnnn ‑> nnnnn executed nnnnn times)<=====

The information in this line indicates the following:

• #nnnnn: The program statement or offset the backtrace is currently positioned at
• nnnnn ‑> nnnnn: The first and last number of the statement block
• nnnnn times: How many times a statement block was executed

On the Source Listing Backtrace, each relevant backtrace position is indicated in the listing by an arrow or a line, as shown in the following table:

The Source Listing Backtrace displays the source of the following statements:

• The order of the statements reflects the program's execution path.
• The top statement is the first statement executed; the bottom statement is the most recently executed statement