Examine the captured trace in the Trace tab:
All program execution from
while(1)onwards is traced, except for the body ofGetData().Search for the first instance of
GetData()in the captured trace:Click the Trace tab to display the captured trace.
Select Find Symbol Name... from the Find menu to display the Enter Value dialog box.
Enter GetData (without the parentheses).
Click Find. The first instance of
GetDatain the captured trace is selected. An example is shown in Figure 10.40.Scroll through the captured trace. Observe that only the function call to
GetData()and the instructions to return tomain()are traced. An example is shown in Figure 10.41.
Set another exclude range to exclude tracing of
GetAverage():Click the trace.c tab in the Code window.
Scroll down until the start of
GetAverage()is visible.Right-click in the gray margin at line 169 to display the context menu.
Select Insert Tracepoint... from the context menu to display the New Tracepoint dialog box.
Select Start of Excluded Trace Range (Instruction and Data) from the list of tracepoint types.
Click OK. The Start of Excluded Trace Range tracepoint is set.
Scroll down until the end of
GetAverage()is visible.Right-click in the gray margin at line 175 to display the context menu.
Select Insert Tracepoint... from the context menu to display the New Tracepoint dialog box.
Select End of Excluded Trace Range (Instruction and Data) from the list of tracepoint types.
Click OK. The End of Excluded Trace Range tracepoint is set.
Reload the image.
Click Run on
the Debug toolbar to start execution.
After
a short time, click Stop on the Debug toolbar
to stop execution. The captured trace is displayed in the Trace tab
of the Analysis window.Search for the first instance of
GetAverage()in the captured trace.Click the Trace tab to display the captured trace.
Select Find Symbol Name... from the Find menu to display the Enter Value dialog box.
Enter GetAverage (without the parentheses).
Click Find. The first instance of
GetAveragein the captured trace is selected.
Scroll a short way through the captured trace. Observe that only the function calls to
GetData()andGetAverage(), and the instructions to return tomain()are traced. An example is shown in Figure 10.42.
Restart and stop execution again:
- Click Run on
the Debug toolbar to restart execution.
- After
a short time, click Stop on the Debug toolbar
to stop execution. No trace is captured in this case. Because there
is a Trace Start Point at line 60, tracing is disabled until the
Trace Start Point is passed. Execution must pass the Trace Start
Point to cause tracing to be enabled again. Therefore, to capture
trace again, you must reload the image before restarting execution.
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