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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 "foundation/windows/PxWindowsInclude.h"
using namespace physx;
static int64_t getTimeTicks()
{
LARGE_INTEGER a;
QueryPerformanceCounter(&a);
return a.QuadPart;
}
static double getTickDuration()
{
LARGE_INTEGER a;
QueryPerformanceFrequency(&a);
return 1.0f / double(a.QuadPart);
}
static double sTickDuration = getTickDuration();
static const PxCounterFrequencyToTensOfNanos gCounterFreq = PxTime::getCounterFrequency();
const PxCounterFrequencyToTensOfNanos& PxTime::getBootCounterFrequency()
{
return gCounterFreq;
}
PxCounterFrequencyToTensOfNanos PxTime::getCounterFrequency()
{
LARGE_INTEGER freq;
QueryPerformanceFrequency(&freq);
return PxCounterFrequencyToTensOfNanos(PxTime::sNumTensOfNanoSecondsInASecond, (uint64_t)freq.QuadPart);
}
uint64_t PxTime::getCurrentCounterValue()
{
LARGE_INTEGER ticks;
QueryPerformanceCounter(&ticks);
return (uint64_t)ticks.QuadPart;
}
PxTime::PxTime() : mTickCount(0)
{
getElapsedSeconds();
}
PxTime::Second PxTime::getElapsedSeconds()
{
int64_t lastTickCount = mTickCount;
mTickCount = getTimeTicks();
return (mTickCount - lastTickCount) * sTickDuration;
}
PxTime::Second PxTime::peekElapsedSeconds()
{
return (getTimeTicks() - mTickCount) * sTickDuration;
}
PxTime::Second PxTime::getLastTime() const
{
return mTickCount * sTickDuration;
}