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60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
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/*
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* Vinace
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* Copyright (C) P.Y. Rollo 2009 <dev@pyrollo.com>
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*
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* Vinace is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Vinace is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the 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, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _C_CYCLE_AND_WAIT_CLOCK_HPP_
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#define _C_CYCLE_AND_WAIT_CLOCK_HPP_
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#include "c-clock.hpp"
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#include "../core/c-observable.hpp"
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#define CLOCK_STAT_PERIODS 100
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//
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// CCycleAndWaitClock
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//
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// A clock that alternates cycling and waiting, balanced with gathered statistics
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// to get as close as possible to the wanted frequency
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class CCycleAndWaitClock : public CClock, public CObservable
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{
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public:
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CCycleAndWaitClock(CProcessor *processor);
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void run();
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void set_frequency(float freq);
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int get_mean_period();
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protected:
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int nsPeriod;
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void wait();
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private:
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// For statistics
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int periods[CLOCK_STAT_PERIODS];
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int period_number;
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int mean_period;
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int max_period;
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int min_period;
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};
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#endif // _C_CYCLE_AND_WAIT_CLOCK_HPP_
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