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
|
// 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) 2008-2017 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#include "PsWindowsInclude.h"
#include "NvCloth/ps/PsAtomic.h"
/** \brief NVidia namespace */
namespace nv
{
/** \brief nvcloth namespace */
namespace cloth
{
namespace ps
{
int32_t atomicExchange(volatile int32_t* val, int32_t val2)
{
return (int32_t)InterlockedExchange((volatile LONG*)val, (LONG)val2);
}
int32_t atomicCompareExchange(volatile int32_t* dest, int32_t exch, int32_t comp)
{
return (int32_t)InterlockedCompareExchange((volatile LONG*)dest, exch, comp);
}
void* atomicCompareExchangePointer(volatile void** dest, void* exch, void* comp)
{
return InterlockedCompareExchangePointer((volatile PVOID*)dest, exch, comp);
}
int32_t atomicIncrement(volatile int32_t* val)
{
return (int32_t)InterlockedIncrement((volatile LONG*)val);
}
int32_t atomicDecrement(volatile int32_t* val)
{
return (int32_t)InterlockedDecrement((volatile LONG*)val);
}
int32_t atomicAdd(volatile int32_t* val, int32_t delta)
{
LONG newValue, oldValue;
do
{
oldValue = *val;
newValue = oldValue + delta;
} while(InterlockedCompareExchange((volatile LONG*)val, newValue, oldValue) != oldValue);
return newValue;
}
int32_t atomicMax(volatile int32_t* val, int32_t val2)
{
// Could do this more efficiently in asm...
LONG newValue, oldValue;
do
{
oldValue = *val;
if(val2 > oldValue)
newValue = val2;
else
newValue = oldValue;
} while(InterlockedCompareExchange((volatile LONG*)val, newValue, oldValue) != oldValue);
return newValue;
}
} // namespace ps
} // namespace cloth
} // namespace nv
|