/usr/share/psychtoolbox-3/PsychTests/LoadGenerator.m is in psychtoolbox-3-common 3.0.11.20140816.dfsg1-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | function LoadGenerator(yieldmsecs)
% LoadGenerator([yieldmsecs=0])
%
% Create cpu-load by simply executing an empty while-loop as fast as
% possible.
%
% Optionally the load can be reduced by specifying a non-zero 'yieldmsecs'
% argument telling the function that it should release the cpu for
% 'yieldmsecs' milliseconds in each loop iteration.
%
% This function never returns, you have to abort it by pressing CTRL+C.
%
% Default to a overload load:
if nargin < 1
yieldmsecs = 0;
end
% Repeat forever:
while 1
% If yield requested, yield for given number of msecs, otherwise
% just spin-wait at 100% of achievable cpu load:
if yieldmsecs > 0
WaitSecs('YieldSecs', yieldmsecs / 1000);
end
end
% Done.
end
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