Check if Simulink is started (for faster use of find_system)

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dbmn
dbmn 2016-9-6
回答： Malcolm Wood 2021-6-10
I have a function that calls
find_system('SearchDepth',0);
to check if there are any Simulink elements. As expected, if no models are open, it returns an empty cell array.
BUT Matlab spends ages (about 5 seconds) while "Starting Simulink...". I could omit the check if I knew that Simulink was not started and save the 5 Seconds.
  • Is there a way to programmatically check if Simulink is already started?

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采纳的回答

dbmn
dbmn 2016-9-7
I found a workaround that I wanted to share
% check if Simulink was started in the past
current_licenses = license('inuse');
if strcmp('simulink', current_licenses)
% code that calls findsystem
end
It is not the nicest way to check if simulink has been started in the past by checking the currently used licenses on the machine - but it works most of the time.
Attention: by doing this you will not catch any timeouts that might occur when you are using a server based license.

更多回答（1 个）

Malcolm Wood
Malcolm Wood 2021-6-10
Since R2020b there's a function called isSimulinkStarted which tells you whether the "Starting Simulink..." process has already run - which, as you've seen, isn't quite the same as whether a license has been checked out.
https://www.mathworks.com/help/simulink/slref/issimulinkstarted.html

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