5.3.9 TRACE

Type:

int

Purpose:

sets level of debugging.

TRACE=0

No debugging messages are printed.

TRACE=1

Messages about entering and leaving of procedures are displayed.

TRACE=3

Messages about entering and leaving of procedures together with line numbers are displayed.

TRACE=4

Each line is echoed and the interpretation of commands in this line is suspended until the user presses RETURN.

TRACE=8

(debug version only:) show basering for all levels

TRACE=128

show all calls to kernel routines

TRACE=256

show all assigns

TRACE=512

show all automatic type conversions

TRACE=1024

profiling: print line numbers to smon.out

TRACE is defaulted to 0.
TRACE does not affect the output of commands.

Example:

TRACE=1; LIB "general.lib"; ==> entering mod_init (level 1) ==> entering mod_init (level 3) ==> entering semaphore (level 4) ==> leaving semaphore (level 4) ==> leaving mod_init (level 3) ==> leaving mod_init (level 1) ==> entering mod_init (level 1) ==> entering semaphore (level 2) ==> leaving semaphore (level 2) ==> entering semaphore (level 2) ==> leaving semaphore (level 2) ==> leaving mod_init (level 1) sum(1..100); ==> entering sum (level 0) ==> entering lsum (level 1) ==> entering lsum (level 2) ==> entering lsum (level 3) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> leaving lsum (level 3) ==> entering lsum (level 3) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> leaving lsum (level 3) ==> leaving lsum (level 2) ==> entering lsum (level 2) ==> entering lsum (level 3) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> leaving lsum (level 3) ==> entering lsum (level 3) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> leaving lsum (level 3) ==> leaving lsum (level 2) ==> leaving lsum (level 1) ==> entering lsum (level 1) ==> entering lsum (level 2) ==> entering lsum (level 3) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> leaving lsum (level 3) ==> entering lsum (level 3) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> leaving lsum (level 3) ==> leaving lsum (level 2) ==> entering lsum (level 2) ==> entering lsum (level 3) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> leaving lsum (level 3) ==> entering lsum (level 3) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> entering lsum (level 4) ==> leaving lsum (level 4) ==> leaving lsum (level 3) ==> leaving lsum (level 2) ==> leaving lsum (level 1) ==> leaving sum (level 0) ==> 5050