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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
LilyPond 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 3 of the License, or
(at your option) any later version.
LilyPond 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 LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "cpu-timer.hh"
#include <unistd.h>
// nextstep
#ifndef CLOCKS_PER_SEC
#ifdef CLK_TCK
#define CLOCKS_PER_SEC CLK_TCK
#elif defined _SC_CLK_TCK
#define CLOCKS_PER_SEC sysconf (_SC_CLK_TCK)
#else
#error cannot determine CLOCKS_PER_SEC
#endif
#endif
Cpu_timer::Cpu_timer ()
{
restart ();
}
void
Cpu_timer::restart ()
{
start_clock_ = clock ();
}
Real
Cpu_timer::read ()
{
clock_t stop = clock ();
return (stop - start_clock_) / Real (CLOCKS_PER_SEC);
}
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