1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2018 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 "cudamanager/PxCudaContextManager.h"
#include "cudamanager/PxCudaMemoryManager.h"
#include "Allocator.h"
#include "CuCheckSuccess.h"
#include <cuda.h>
namespace physx
{
namespace cloth
{
struct CuHostAllocator
{
CuHostAllocator(physx::PxCudaContextManager* ctx = NULL, unsigned int flags = cudaHostAllocDefault)
: mDevicePtr(0), mFlags(flags), mManager(0)
{
PX_ASSERT(ctx);
if(ctx)
mManager = ctx->getMemoryManager();
}
void* allocate(size_t n, const char*, int)
{
physx::PxCudaBufferPtr bufferPtr;
PX_ASSERT(mManager);
if(mFlags & cudaHostAllocWriteCombined)
bufferPtr = mManager->alloc(physx::PxCudaBufferMemorySpace::T_WRITE_COMBINED, n,
PX_ALLOC_INFO("cloth::CuHostAllocator::T_WRITE_COMBINED", CLOTH));
else if(mFlags & cudaHostAllocMapped)
bufferPtr = mManager->alloc(physx::PxCudaBufferMemorySpace::T_PINNED_HOST, n,
PX_ALLOC_INFO("cloth::CuHostAllocator::T_PINNED_HOST", CLOTH));
else
bufferPtr = mManager->alloc(physx::PxCudaBufferMemorySpace::T_HOST, n,
PX_ALLOC_INFO("cloth::CuHostAllocator::T_HOST", CLOTH));
if(mFlags & cudaHostAllocMapped)
checkSuccess(cuMemHostGetDevicePointer(&mDevicePtr, reinterpret_cast<void*>(bufferPtr), 0));
return reinterpret_cast<void*>(bufferPtr);
}
void deallocate(void* p)
{
PX_ASSERT(mManager);
if(mFlags & cudaHostAllocWriteCombined)
mManager->free(physx::PxCudaBufferMemorySpace::T_WRITE_COMBINED, physx::PxCudaBufferPtr(p));
else if(mFlags & cudaHostAllocMapped)
mManager->free(physx::PxCudaBufferMemorySpace::T_PINNED_HOST, physx::PxCudaBufferPtr(p));
else
mManager->free(physx::PxCudaBufferMemorySpace::T_HOST, physx::PxCudaBufferPtr(p));
// don't reset mDevicePtr because Array::recreate deallocates last
}
CUdeviceptr mDevicePtr; // device pointer of last allocation
unsigned int mFlags;
physx::PxCudaMemoryManager* mManager;
};
template <typename T>
CuHostAllocator getMappedAllocator(physx::PxCudaContextManager* ctx)
{
return CuHostAllocator(ctx, cudaHostAllocMapped | cudaHostAllocWriteCombined);
}
template <typename T>
struct CuPinnedVector
{
// note: always use shdfnd::swap() instead of Array::swap()
// in order to keep cached device pointer consistent
typedef shdfnd::Array<T, typename physx::cloth::CuHostAllocator> Type;
};
template <typename T>
T* getDevicePointer(shdfnd::Array<T, typename physx::cloth::CuHostAllocator>& vector)
{
// cached device pointer only valid if non-empty
return vector.empty() ? 0 : reinterpret_cast<T*>(vector.getAllocator().mDevicePtr);
}
} // namespace cloth
} // namespace physx
namespace physx
{
namespace shdfnd
{
template <typename T>
void swap(Array<T, typename physx::cloth::CuHostAllocator>& left, Array<T, typename physx::cloth::CuHostAllocator>& right)
{
swap(left.getAllocator(), right.getAllocator());
left.swap(right);
}
}
}
|