diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2008-06-02 21:41:35 +0000 |
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committer | Paul Davis <paul@linuxaudiosystems.com> | 2008-06-02 21:41:35 +0000 |
commit | 449aab3c465bbbf66d221fac3d7ea559f1720357 (patch) | |
tree | 6843cc40c88250a132acac701271f1504cd2df04 /libs/ardour/cycle_timer.cc | |
parent | 9c0d7d72d70082a54f823cd44c0ccda5da64bb6f (diff) |
rollback to 3428, before the mysterious removal of libs/* at 3431/3432
git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/cycle_timer.cc')
-rw-r--r-- | libs/ardour/cycle_timer.cc | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/libs/ardour/cycle_timer.cc b/libs/ardour/cycle_timer.cc new file mode 100644 index 0000000000..143cb841ec --- /dev/null +++ b/libs/ardour/cycle_timer.cc @@ -0,0 +1,74 @@ +/* + Copyright (C) 2002 Andrew Morton + + This program 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 of the License, or + (at your option) any later version. + + This program 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 this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +#include <cstdio> +#include <pbd/error.h> +#include <ardour/cycle_timer.h> + +#include "i18n.h" + +using namespace PBD; + +float CycleTimer::cycles_per_usec = 0; + +float +CycleTimer::get_mhz() +{ + FILE *f; + + if ((f = fopen("/proc/cpuinfo", "r")) == 0) { + fatal << _("CycleTimer::get_mhz(): can't open /proc/cpuinfo") << endmsg; + /*NOTREACHED*/ + return 0.0f; + } + + while (true) { + + float mhz; + int ret; + char buf[1000]; + + if (fgets (buf, sizeof(buf), f) == 0) { + fatal << _("CycleTimer::get_mhz(): cannot locate cpu MHz in /proc/cpuinfo") << endmsg; + /*NOTREACHED*/ + return 0.0f; + } + +#ifdef __powerpc__ + + int imhz; + + /* why can't the PPC crew standardize their /proc/cpuinfo format ? */ + ret = sscanf (buf, "clock\t: %dMHz", &imhz); + mhz = (float) imhz; + +#else /* XXX don't assume its x86 just because its not power pc */ + ret = sscanf (buf, "cpu MHz : %f", &mhz); + +#endif + if (ret == 1) { + fclose(f); + return mhz; + } + } + + fatal << _("cannot locate cpu MHz in /proc/cpuinfo") << endmsg; + /*NOTREACHED*/ + return 0.0f; +} |