Detecting a hung command

Question

Jack 2016-5-11

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/283629-detecting-a-hung-command

回答： Walter Roberson 2016-5-11

Hi All, I have a for loop in which I run a non-Matlab command... specifically, "findscu" which is part of the dicom toolkit:

for i=1:n
unix(['findscu ...'])
end

Unfortunately, this command hangs once in a while, sometimes a day later and sometimes a few hours. I have to constantly check to see if I need to ctrl-C and restart my code. Importantly, Matlab does not crash, rather, the findscu code just gets stuck searching indefinitely and does not progress to the next iteration of the loop. Can anyone think of a way in which I might be able to have a timeout such that I can force my code to error out after a certain time so that I can automatically go to the next iteration of the loop? thanks!