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getrusage.cc
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1996-11-03
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/*
Copyright (C) 1996 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
Octave is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "systime.h"
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#if defined (HAVE_TIMES) && defined (HAVE_SYS_TIMES_H)
#if defined (HAVE_SYS_PARAM_H)
#include <sys/param.h>
#endif
#include <sys/times.h>
#if !defined (HZ)
#if defined (CLK_TCK)
#define HZ CLK_TCK
#elif defined (USG)
#define HZ 100
#else
#define HZ 60
#endif
#endif
#endif
#include "defun-dld.h"
#include "help.h"
#include "oct-map.h"
#include "sysdep.h"
#include "ov.h"
#include "oct-obj.h"
#include "utils.h"
#ifndef RUSAGE_SELF
#define RUSAGE_SELF 0
#endif
// System resource functions.
DEFUN_DLD (getrusage, , ,
"getrusage ()\n\
\n\
Return system resource statistics.")
{
Octave_map m;
Octave_map tv_tmp;
#if defined (HAVE_GETRUSAGE)
struct rusage ru;
getrusage (RUSAGE_SELF, &ru);
tv_tmp ["sec"] = (double) ru.ru_utime.tv_sec;
tv_tmp ["usec"] = (double) ru.ru_utime.tv_usec;
m ["utime"] = octave_value (tv_tmp);
tv_tmp ["sec"] = (double) ru.ru_stime.tv_sec;
tv_tmp ["usec"] = (double) ru.ru_stime.tv_usec;
m ["stime"] = octave_value (tv_tmp);
#if ! defined (RUSAGE_TIMES_ONLY)
m ["maxrss"] = (double) ru.ru_maxrss;
m ["ixrss"] = (double) ru.ru_ixrss;
m ["idrss"] = (double) ru.ru_idrss;
m ["isrss"] = (double) ru.ru_isrss;
m ["minflt"] = (double) ru.ru_minflt;
m ["majflt"] = (double) ru.ru_majflt;
m ["nswap"] = (double) ru.ru_nswap;
m ["inblock"] = (double) ru.ru_inblock;
m ["oublock"] = (double) ru.ru_oublock;
m ["msgsnd"] = (double) ru.ru_msgsnd;
m ["msgrcv"] = (double) ru.ru_msgrcv;
m ["nsignals"] = (double) ru.ru_nsignals;
m ["nvcsw"] = (double) ru.ru_nvcsw;
m ["nivcsw"] = (double) ru.ru_nivcsw;
#endif
#else
#if defined (HAVE_TIMES) && defined (HAVE_SYS_TIMES_H)
struct tms t;
times (&t);
unsigned long ticks;
unsigned long seconds;
unsigned long fraction;
ticks = t.tms_utime + t.tms_cutime;
fraction = ticks % HZ;
seconds = ticks / HZ;
tv_tmp ["sec"] = (double) seconds;
tv_tmp ["usec"] = (double) (fraction * 1e6 / HZ);
m ["utime"] = octave_value (tv_tmp);
ticks = t.tms_stime + t.tms_cstime;
fraction = ticks % HZ;
seconds = ticks / HZ;
tv_tmp ["sec"] = (double) seconds;
tv_tmp ["usec"] = (double) (fraction * 1e6 / HZ);
m ["stime"] = octave_value (tv_tmp);
#else
tv_tmp ["sec"] = 0.0;
tv_tmp ["usec"] = 0.0;
m ["utime"] = octave_value (tv_tmp);
tv_tmp ["sec"] = 0.0;
tv_tmp ["usec"] = 0.0;
m ["stime"] = octave_value (tv_tmp);
#endif
m ["maxrss"] = octave_NaN;
m ["ixrss"] = octave_NaN;
m ["idrss"] = octave_NaN;
m ["isrss"] = octave_NaN;
m ["minflt"] = octave_NaN;
m ["majflt"] = octave_NaN;
m ["nswap"] = octave_NaN;
m ["inblock"] = octave_NaN;
m ["oublock"] = octave_NaN;
m ["msgsnd"] = octave_NaN;
m ["msgrcv"] = octave_NaN;
m ["nsignals"] = octave_NaN;
m ["nvcsw"] = octave_NaN;
m ["nivcsw"] = octave_NaN;
#endif
return octave_value (m);
}
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/