Automatic Updating of Array Displays

The value of an array expression can change as the program runs. You can choose whether to show the array expression's new values at specific points within the program or at fixed time intervals with the Update at field in the graph options.

If you want the values of an array updated each time the program stops at a breakpoint, you must turn on the Update at: Program stops option. As you step through the program, you can observe the change in array value at each stop. Use this option when you want to view the data change at each breakpoint. The default setting for this feature is off.

If you have a long-running program, choose the Update at: Fixed time interval option to observe changes in the array value over time. With a fixed time update, a timer is automatically set for every nth period. The default time is set for one second intervals. To change the default setting, choose Graph Default Options and change the time interval in the Debugging Options dialog box (make sure you are in the Data Grapher category).

Every time the timer reaches the nth period, WorkShop tries to update the graph display; however, the array could be out of scope at that particular time and no update can be made.

Since the timer is also used in collecting data and when checking for memory leaks and access checking, you cannot use the Update at Fixed time interval setting when you are running the Sampling Collector or the run-time checking feature.