/usr/share/psychtoolbox-3/PsychBasic/GetSecsTick.m is in psychtoolbox-3-common 3.0.11.20140816.dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 tickDuration=GetSecsTick
% tickDuration=GetSecsTick
%
% GetSecsTick returns the fraction of a second which is a tick of the GetSecs clock.
%
% See also: GetSecs, WaitTicks, GetTicks, GetTicksTick, GetBusTicks, GetBusTicksTick.
% 3/15/02 awi wrote it.
% 4/02/02 awi Changed the return value to the clock period from the clock frequency.
% Changed the name from "GetTimeBase" to "GetSecsTick".
% Added script provided by Denis for OS9 version of the Psychtoolbox
% 7/10/04 awi Changed for OSX by adding GetBusTicks and GetBusTicksTick
% to see also. Replaced streq with AssertMex and isOS9.
% 10/4/05 awi Note here cosmetic changes by dgp between 7/10/04 and 10/4/05.
% On Windows and OSX this is only a help file and should not execute.
AssertMex('Win','OSX');
if isOS9
available=Screen('Preference','Available');
if available.UpTime
tickDuration=1e-9; % UpTime tick (a rough guess)
else
tickDuration=8e-6; % Microseconds tick (a rough guess)
end
else
error('Platform unsupported by the Psychtoolbox');
end
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