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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// SPDX-FileCopyrightText: Copyright (c) 2008-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
#include "foundation/PxTime.h"
#include <time.h>
#include <sys/time.h>
#if PX_APPLE_FAMILY
#include <mach/mach_time.h>
#endif
// Use real-time high-precision timer.
#if !PX_APPLE_FAMILY
#define CLOCKID CLOCK_REALTIME
#endif
namespace physx
{
static const PxCounterFrequencyToTensOfNanos gCounterFreq = PxTime::getCounterFrequency();
const PxCounterFrequencyToTensOfNanos& PxTime::getBootCounterFrequency()
{
return gCounterFreq;
}
static PxTime::Second getTimeSeconds()
{
static struct timeval _tv;
gettimeofday(&_tv, NULL);
return double(_tv.tv_sec) + double(_tv.tv_usec) * 0.000001;
}
PxTime::PxTime()
{
mLastTime = getTimeSeconds();
}
PxTime::Second PxTime::getElapsedSeconds()
{
PxTime::Second curTime = getTimeSeconds();
PxTime::Second diff = curTime - mLastTime;
mLastTime = curTime;
return diff;
}
PxTime::Second PxTime::peekElapsedSeconds()
{
PxTime::Second curTime = getTimeSeconds();
PxTime::Second diff = curTime - mLastTime;
return diff;
}
PxTime::Second PxTime::getLastTime() const
{
return mLastTime;
}
#if PX_APPLE_FAMILY
PxCounterFrequencyToTensOfNanos PxTime::getCounterFrequency()
{
mach_timebase_info_data_t info;
mach_timebase_info(&info);
// mach_absolute_time * (info.numer/info.denom) is in units of nano seconds
return PxCounterFrequencyToTensOfNanos(info.numer, info.denom * 10);
}
uint64_t PxTime::getCurrentCounterValue()
{
return mach_absolute_time();
}
#else
PxCounterFrequencyToTensOfNanos PxTime::getCounterFrequency()
{
return PxCounterFrequencyToTensOfNanos(1, 10);
}
uint64_t PxTime::getCurrentCounterValue()
{
struct timespec mCurrTimeInt;
clock_gettime(CLOCKID, &mCurrTimeInt);
// Convert to nanos as this doesn't cause a large divide here
return (static_cast<uint64_t>(mCurrTimeInt.tv_sec) * 1000000000) + (static_cast<uint64_t>(mCurrTimeInt.tv_nsec));
}
#endif
} // namespace physx