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1 ## Copyright (C) 1996, 1997 John W. Eaton |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 2, or (at your option) |
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8 ## any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, write to the Free |
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17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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18 ## 02110-1301, USA. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {[@var{total}, @var{user}, @var{system}] =} cputime (); |
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22 ## Return the CPU time used by your Octave session. The first output is |
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23 ## the total time spent executing your process and is equal to the sum of |
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24 ## second and third outputs, which are the number of CPU seconds spent |
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25 ## executing in user mode and the number of CPU seconds spent executing in |
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26 ## system mode, respectively. If your system does not have a way to report |
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27 ## CPU time usage, @code{cputime} returns 0 for each of its output values. |
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28 ## Note that because Octave used some CPU time to start, it is reasonable |
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29 ## to check to see if @code{cputime} works by checking to see if the total |
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30 ## CPU time used is nonzero. |
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31 ## @end deftypefn |
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32 |
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33 ## Author: jwe |
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34 |
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35 function [total, user, system] = cputime () |
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36 |
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37 if (nargin != 0) |
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38 warning ("cputime: ignoring extra arguments"); |
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39 endif |
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40 |
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41 resource_stats = getrusage (); |
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42 |
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43 usr = resource_stats.utime; |
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44 sys = resource_stats.stime; |
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45 |
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46 user = usr.sec + usr.usec / 1e6; |
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47 system = sys.sec + sys.usec / 1e6; |
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48 total = user + system; |
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49 |
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50 endfunction |
