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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
See int.

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