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// This code contains NVIDIA Confidential Information and is disclosed to you
// under a form of NVIDIA software license agreement provided separately to you.
//
// Notice
// NVIDIA Corporation and its licensors retain all intellectual property and
// proprietary rights in and to this software and related documentation and
// any modifications thereto. Any use, reproduction, disclosure, or
// distribution of this software and related documentation without an express
// license agreement from NVIDIA Corporation is strictly prohibited.
//
// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
//
// Information and code furnished is believed to be accurate and reliable.
// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
// result from its use. No license is granted by implication or otherwise under any patent
// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
// components in life support devices or systems without express written approval of
// NVIDIA Corporation.
//
// Copyright (c) 2016-2018 NVIDIA Corporation. All rights reserved.
#ifndef NVBLASTTIME_H
#define NVBLASTTIME_H
#include "NvBlastTypes.h"
namespace Nv
{
namespace Blast
{
class Time
{
public:
Time() : m_lastTickCount(getTimeTicks()) {}
int64_t getElapsedTicks()
{
const int64_t lastTickCount = m_lastTickCount;
m_lastTickCount = getTimeTicks();
return m_lastTickCount - lastTickCount;
}
int64_t peekElapsedTicks() const
{
return getTimeTicks() - m_lastTickCount;
}
int64_t getLastTickCount() const
{
return m_lastTickCount;
}
static double seconds(int64_t ticks)
{
return s_secondsPerTick * ticks;
}
private:
int64_t getTimeTicks() const;
static double getTickDuration();
int64_t m_lastTickCount;
static const double s_secondsPerTick;
};
} // namespace Blast
} // namespace Nv
//////// Time inline functions for various platforms ////////
#if NV_MICROSOFT_FAMILY
#include "NvBlastIncludeWindows.h"
NV_INLINE int64_t Nv::Blast::Time::getTimeTicks() const
{
LARGE_INTEGER a;
QueryPerformanceCounter(&a);
return a.QuadPart;
}
NV_INLINE double Nv::Blast::Time::getTickDuration()
{
LARGE_INTEGER a;
QueryPerformanceFrequency(&a);
return 1.0 / (double)a.QuadPart;
}
#elif NV_UNIX_FAMILY
#include <time.h>
NV_INLINE int64_t Nv::Blast::Time::getTimeTicks() const
{
struct timespec mCurrTimeInt;
clock_gettime(CLOCK_REALTIME, &mCurrTimeInt);
return (static_cast<int64_t>(mCurrTimeInt.tv_sec) * 1000000000) + (static_cast<int64_t>(mCurrTimeInt.tv_nsec));
}
NV_INLINE double Nv::Blast::Time::getTickDuration()
{
return 1.e-9;
}
#elif NV_PS4
#include "ps4/NvBlastTimePS4.h"
#endif
#endif // #ifndef NVBLASTTIME_H
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