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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) 2008-2020 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#pragma once
#include <utility>
#include "CuCheckSuccess.h"
#include "NvCloth/Allocator.h"
// todo: rename file to CuHostAllocator.h
namespace nv
{
namespace cloth
{
template <typename T, unsigned Flags = 0>
class CuHostAllocator
{
public:
typedef T value_type;
CuHostAllocator(CUcontext ctx = nullptr)
: mContext(ctx), mDevicePtr(0)
{}
template <class U>
CuHostAllocator(const CuHostAllocator<U, Flags>& other)
: mContext(other.mContext), mDevicePtr(0)
{}
template <class U>
struct rebind
{
typedef CuHostAllocator<U, Flags> other;
};
T* allocate(size_t num, const char*, int)
{
void* ptr = nullptr;
checkSuccess(cuMemHostAlloc(&ptr, num * sizeof(T), Flags));
#if PX_VC
#pragma warning(push)
#pragma warning(disable : 4127) // conditional expression is constant
#endif
if (Flags & CU_MEMHOSTALLOC_DEVICEMAP)
checkSuccess(cuMemHostGetDevicePointer(&mDevicePtr, ptr, 0));
#if PX_VC
#pragma warning(pop)
#endif
return static_cast<T*>(ptr);
}
void deallocate(void* ptr)
{
checkSuccess(cuMemFreeHost(ptr));
}
#if PX_VC
template <class U>
void construct(U* p, T&& val)
{
new (static_cast<void*>(p)) U(std::forward<T>(val));
}
#else
typedef T* pointer;
typedef const T* const_pointer;
typedef T& reference;
typedef const T& const_reference;
template <class U, class... Args>
void construct(U* p, Args&&... args)
{
::new (static_cast<void*>(p)) U(std::forward<Args>(args)...);
}
#endif
void destroy(T* ptr)
{
PX_UNUSED(ptr);
ptr->~T();
}
CUcontext mContext;
CUdeviceptr mDevicePtr; // device pointer of last allocation
};
template <class T1, unsigned Flag1, class T2, unsigned Flag2>
bool operator == (const CuHostAllocator<T1, Flag1>&, const CuHostAllocator<T2, Flag2>&)
{
return true;
}
template <class T1, unsigned Flag1, class T2, unsigned Flag2>
bool operator!=(const CuHostAllocator<T1, Flag1>&, const CuHostAllocator<T2, Flag2>&)
{
return false;
}
//Use CuHostVectorImpl instead of nv::cloth::Array<T, CuHostAllocator<T, Flags>>
//This entire class is just to make sure that the mDevicePtr from the CuHostAllocator is properly swapped together with mData
template <typename T, unsigned Flags = 0>
class CuHostVectorImpl : public ps::Array<T, CuHostAllocator<T, Flags>>
{
typedef ps::Array<T, CuHostAllocator<T, Flags>> Super;
typedef CuHostAllocator<T, Flags> Alloc;
public:
explicit CuHostVectorImpl(const physx::PxEMPTY v):Super(v){}
PX_INLINE explicit CuHostVectorImpl(const Alloc& alloc = Alloc()):Super(alloc){}
PX_INLINE explicit CuHostVectorImpl(uint32_t size, const T& a = T(), const Alloc& alloc = Alloc()):Super(size,a,alloc){}
template <class A>
PX_INLINE explicit CuHostVectorImpl(const ps::Array<T, A>& other, const Alloc& alloc = Alloc()):Super(other,alloc){}
PX_INLINE CuHostVectorImpl(const CuHostVectorImpl& other, const Alloc& alloc = Alloc()):Super(other,alloc){}
PX_INLINE explicit CuHostVectorImpl(const T* first, const T* last, const Alloc& alloc = Alloc()):Super(first,last,alloc){}
void swap(CuHostVectorImpl<T, Flags>& other)
{
NV_CLOTH_ASSERT(this->mContext == other.mContext);
ps::swap(this->mDevicePtr, other.mDevicePtr);
Super::swap(other);
}
};
template <typename T, unsigned Flags = 0>
struct CuHostVector
{
typedef CuHostVectorImpl<T,Flags> Type;
};
template <typename T, unsigned Flags /*= 0*/>
T* getDevicePointer(nv::cloth::CuHostVectorImpl<T, Flags>& vector)
{
// cached device pointer only valid if non-empty
return vector.empty() ? 0 : reinterpret_cast<T*>(vector.getAllocator().mDevicePtr);
}
namespace ps
{
//Make sure we call the correct swap function when using the free function swap
template <class T, unsigned Flags>
PX_INLINE void swap(nv::cloth::CuHostVectorImpl<T, Flags>& x, nv::cloth::CuHostVectorImpl<T, Flags>& y)
{
x.swap(y);
}
}
} // namespace cloth
} // namespace nv
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