MATLAB®

Finding Timer Objects in Memory

Finding All Timer Objects

To find all the timer objects that exist in memory, use the timerfind function. This function returns an array of timer objects. If you leave off the semicolon, and there are multiple timer objects in the array, timerfind displays summary information in a table:

t1 = timer;
t2 = timer;
t3 = timer;
t_array = timerfind

Timer Object Array

   Index:  ExecutionMode:  Period:  TimerFcn:    Name:
   1       singleShot      1        ''           timer-3
   2       singleShot      1        ''           timer-4
   3       singleShot      1        ''           timer-5

Using timerfind to determine all the timer objects that exist in memory can be helpful when deleting timer objects.

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Finding Invisible Timer Objects

If you set the value of a timer object's ObjectVisibility property to 'off', the timer object does not appear in listings of existing timer objects returned by timerfind. The ObjectVisibility property provides a way for application developers to prevent end-user access to the timer objects created by their application.

Objects that are not visible are still valid. If you have access to the object (for example, from within the M-file that created it), you can set its properties. To retrieve a list of all the timer objects in memory, including invisible ones, use the timerfindall function.

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Deleting Timer Objects from Memory

Performance