121 lines
3.5 KiB
C++
121 lines
3.5 KiB
C++
//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of NVIDIA CORPORATION nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
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#include "Ps.h"
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#include "PsTime.h"
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#include <time.h>
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#include <sys/time.h>
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#if PX_APPLE_FAMILY
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#include <mach/mach_time.h>
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#endif
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// Use real-time high-precision timer.
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#if !PX_APPLE_FAMILY
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#define CLOCKID CLOCK_REALTIME
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#endif
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namespace physx
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{
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namespace shdfnd
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{
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static const CounterFrequencyToTensOfNanos gCounterFreq = Time::getCounterFrequency();
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const CounterFrequencyToTensOfNanos& Time::getBootCounterFrequency()
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{
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return gCounterFreq;
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}
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static Time::Second getTimeSeconds()
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{
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static struct timeval _tv;
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gettimeofday(&_tv, NULL);
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return double(_tv.tv_sec) + double(_tv.tv_usec) * 0.000001;
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}
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Time::Time()
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{
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mLastTime = getTimeSeconds();
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}
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Time::Second Time::getElapsedSeconds()
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{
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Time::Second curTime = getTimeSeconds();
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Time::Second diff = curTime - mLastTime;
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mLastTime = curTime;
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return diff;
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}
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Time::Second Time::peekElapsedSeconds()
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{
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Time::Second curTime = getTimeSeconds();
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Time::Second diff = curTime - mLastTime;
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return diff;
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}
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Time::Second Time::getLastTime() const
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{
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return mLastTime;
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}
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#if PX_APPLE_FAMILY
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CounterFrequencyToTensOfNanos Time::getCounterFrequency()
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{
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mach_timebase_info_data_t info;
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mach_timebase_info(&info);
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// mach_absolute_time * (info.numer/info.denom) is in units of nano seconds
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return CounterFrequencyToTensOfNanos(info.numer, info.denom * 10);
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}
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uint64_t Time::getCurrentCounterValue()
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{
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return mach_absolute_time();
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}
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#else
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CounterFrequencyToTensOfNanos Time::getCounterFrequency()
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{
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return CounterFrequencyToTensOfNanos(1, 10);
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}
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uint64_t Time::getCurrentCounterValue()
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{
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struct timespec mCurrTimeInt;
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clock_gettime(CLOCKID, &mCurrTimeInt);
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// Convert to nanos as this doesn't cause a large divide here
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return (static_cast<uint64_t>(mCurrTimeInt.tv_sec) * 1000000000) + (static_cast<uint64_t>(mCurrTimeInt.tv_nsec));
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}
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#endif
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} // namespace shdfnd
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} // namespace physx
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