Revision control
++ // 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
++
++ #ifndef PX_TIME_H
++ #define PX_TIME_H
++
++ #include "foundation/PxSimpleTypes.h"
++ #include "foundation/PxFoundationConfig.h"
++
++ #if PX_LINUX
++ #include <time.h>
++ #endif
++
++ #if !PX_DOXYGEN
++ namespace physx
++ {
++ #endif
++
++ struct PxCounterFrequencyToTensOfNanos
++ {
++ PxU64 mNumerator;
++ PxU64 mDenominator;
++ PxCounterFrequencyToTensOfNanos(PxU64 inNum, PxU64 inDenom) : mNumerator(inNum), mDenominator(inDenom)
++ {
++ }
++
++ // quite slow.
++ PxU64 toTensOfNanos(PxU64 inCounter) const
++ {
++ return (inCounter * mNumerator) / mDenominator;
++ }
++ };
++
++ class PX_FOUNDATION_API PxTime
++ {
++ public:
++ typedef PxF64 Second;
++ static const PxU64 sNumTensOfNanoSecondsInASecond = 100000000;
++ // This is supposedly guaranteed to not change after system boot
++ // regardless of processors, speedstep, etc.
++ static const PxCounterFrequencyToTensOfNanos& getBootCounterFrequency();
++
++ static PxCounterFrequencyToTensOfNanos getCounterFrequency();
++
++ static PxU64 getCurrentCounterValue();
++
++ // SLOW!!
++ // Thar be a 64 bit divide in thar!
++ static PxU64 getCurrentTimeInTensOfNanoSeconds()
++ {
++ PxU64 ticks = getCurrentCounterValue();
++ return getBootCounterFrequency().toTensOfNanos(ticks);
++ }
++
++ PxTime();
++ Second getElapsedSeconds();
++ Second peekElapsedSeconds();
++ Second getLastTime() const;
++
++ private:
++ #if PX_LINUX || PX_APPLE_FAMILY
++ Second mLastTime;
++ #else
++ PxI64 mTickCount;
++ #endif
++ };
++ #if !PX_DOXYGEN
++ } // namespace physx
++ #endif
++
++ #endif
++