MATLAB Programming

10 Scheduling Program Execution with Timers
Finding All Timer Objects in Memory
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. See “Deleting All Existing Timer
Objects” on page 10-23 for an example.
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. TheObjectVisibility 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.
10-24