52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
/*
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Timings - timing specifications for a frame quantised data stream
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Copyright (C) Lumiera.org
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2012, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (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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* *****************************************************/
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#include "backend/real-clock.hpp"
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#include <ctime>
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namespace backend {
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#define MICRO_TICS_PER_NANOSECOND (1000*1000*1000 / GAVL_TIME_SCALE)
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TimeValue
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RealClock::_readSystemTime()
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{
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timespec now;
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clock_gettime(CLOCK_REALTIME, &now);
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////////////////////////////////////////////TODO shouldn't that be CLOCK_MONOTONIC ?
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////////////////////////////////////////////TODO (what happens on ntp adjustments?)
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gavl_time_t ticksSince1970 = now.tv_sec * GAVL_TIME_SCALE
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+ now.tv_nsec / MICRO_TICS_PER_NANOSECOND;
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ENSURE (ticksSince1970 == Time::limited (ticksSince1970));
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return TimeValue::buildRaw_(ticksSince1970); // bypassing the limit check
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}
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} // namespace backend
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