Paul Davis
912da52a53
git-svn-id: svn://localhost/ardour2/trunk@629 d708f5d6-7413-0410-9779-e7cbd77b26cf
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
/*
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Copyright (C) 2002 Andrew Morton
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#include <cstdio>
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#include <pbd/error.h>
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#include <ardour/cycle_timer.h>
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#include "i18n.h"
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using namespace PBD;
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float CycleTimer::cycles_per_usec = 0;
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float
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CycleTimer::get_mhz()
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{
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FILE *f;
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if ((f = fopen("/proc/cpuinfo", "r")) == 0) {
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fatal << _("CycleTimer::get_mhz(): can't open /proc/cpuinfo") << endmsg;
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/*NOTREACHED*/
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return 0.0f;
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}
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while (true) {
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float mhz;
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int ret;
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char buf[1000];
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if (fgets (buf, sizeof(buf), f) == 0) {
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fatal << _("CycleTimer::get_mhz(): cannot locate cpu MHz in /proc/cpuinfo") << endmsg;
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/*NOTREACHED*/
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return 0.0f;
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}
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#ifdef __powerpc__
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int imhz;
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/* why can't the PPC crew standardize their /proc/cpuinfo format ? */
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ret = sscanf (buf, "clock\t: %dMHz", &imhz);
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mhz = (float) imhz;
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#else /* XXX don't assume its x86 just because its not power pc */
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ret = sscanf (buf, "cpu MHz : %f", &mhz);
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#endif
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if (ret == 1) {
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fclose(f);
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return mhz;
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}
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}
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fatal << _("cannot locate cpu MHz in /proc/cpuinfo") << endmsg;
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/*NOTREACHED*/
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return 0.0f;
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}
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