104 lines
2.1 KiB
C++
104 lines
2.1 KiB
C++
/*
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* Copyright (C) 2006-2007 John Anderson
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* Copyright (C) 2008-2015 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2014-2015 Robin Gareus <robin@gareus.org>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef timer_h
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#define timer_h
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#include <glib.h>
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#include "types.h"
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#include <cstdint>
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namespace ArdourSurface { namespace MACKIE_NAMESPACE {
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/**
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millisecond timer class.
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*/
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class Timer
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{
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public:
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/**
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start the timer running if true, or just create the
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object if false.
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*/
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Timer( bool shouldStart = true )
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{
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if ( shouldStart )
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start();
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}
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/**
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Start the timer running. Return the current timestamp, in milliseconds
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*/
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unsigned long start()
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{
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_start = g_get_monotonic_time();
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return _start / 1000;
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}
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/**
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returns the number of milliseconds since start
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also stops the timer running
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*/
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unsigned long stop()
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{
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_stop = g_get_monotonic_time();
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return elapsed();
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}
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/**
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returns the number of milliseconds since start
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*/
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unsigned long elapsed() const
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{
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if ( running )
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{
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uint64_t now = g_get_monotonic_time();
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return (now - _start) / 1000;
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}
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else
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{
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return (_stop - _start) / 1000;
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}
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}
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/**
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Call stop and then start. Return the value from stop.
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*/
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unsigned long restart()
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{
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unsigned long retval = stop();
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start();
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return retval;
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}
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private:
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uint64_t _start;
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uint64_t _stop;
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bool running;
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};
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} // Mackie namespace
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} // ArdourSurface namespace
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#endif
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