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To store and time the execution of a subroutine
Most systems software of any kind is composed of a hierarchy of functions
and procedures. During integration, testing, and performance evaluation, you
will want to look at specific procedures to verify that they are executing
correctly and that the implementation is efficient. The analyzer allows you to
do this by triggering on entry to the address range of the subroutine and
counting the elapsed time since the trigger state.
1
Select the state analyzer Trigger menu.
2 Set Count to Time.
Setting the Count to Time causes the state analyzer to store a time stamp for
each data point that is stored in trace memory. The trace list will show these
time stamps next to each state.
3
Define a range term, such as Range1, to represent the address range
of the subroutine of interest.
You may need to examine the structure of your code to help determine this.
If your subroutine calls are really procedure calls, then there is likely to be
some code at the beginning of the routine that adjusts the stack for local
variable allocation. This will precede the address of the first statement in the
procedure. If your subroutine has no local storage and is called by a jump or
branch, then the first statement will also be the entry address.
4
Under State Sequence Levels, enter the following sequence
specification:
•
While storing “no state” Trigger on “In_range1” 1 time
•
While storing “In_range1” Then find “Out_range1” 1 time
•
Store “no state”
Triggering
To store and time the execution of a subroutine
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