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
|
//
// 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.
#include "PhysXIndicator.h"
#include "nvPhysXtoDrv.h"
#pragma warning (push)
#pragma warning (disable : 4668) //'symbol' is not defined as a preprocessor macro, replacing with '0' for 'directives'
#include <windows.h>
#pragma warning (pop)
#include <stdio.h>
#if _MSC_VER >= 1800
#include <VersionHelpers.h>
#endif
// Scope-based to indicate to NV driver that CPU PhysX is happening
physx::PhysXIndicator::PhysXIndicator(bool isGpu)
: mPhysXDataPtr(0), mFileHandle(0), mIsGpu(isGpu)
{
// Get the windows version (we can only create Global\\ namespace objects in XP)
/**
Operating system Version number
---------------- --------------
Windows 7 6.1
Windows Server 2008 R2 6.1
Windows Server 2008 6.0
Windows Vista 6.0
Windows Server 2003 R2 5.2
Windows Server 2003 5.2
Windows XP 5.1
Windows 2000 5.0
**/
char configName[128];
#if _MSC_VER >= 1800
if (!IsWindowsVistaOrGreater())
#else
OSVERSIONINFOEX windowsVersionInfo;
windowsVersionInfo.dwOSVersionInfoSize = sizeof (windowsVersionInfo);
GetVersionEx((LPOSVERSIONINFO)&windowsVersionInfo);
if (windowsVersionInfo.dwMajorVersion < 6)
#endif
NvPhysXToDrv_Build_SectionNameXP(GetCurrentProcessId(), configName);
else
NvPhysXToDrv_Build_SectionName(GetCurrentProcessId(), configName);
mFileHandle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL,
PAGE_READWRITE, 0, sizeof(NvPhysXToDrv_Data_V1), configName);
if (!mFileHandle || mFileHandle == INVALID_HANDLE_VALUE)
return;
bool alreadyExists = ERROR_ALREADY_EXISTS == GetLastError();
mPhysXDataPtr = (physx::NvPhysXToDrv_Data_V1*)MapViewOfFile(mFileHandle,
FILE_MAP_READ|FILE_MAP_WRITE, 0, 0, sizeof(NvPhysXToDrv_Data_V1));
if(!mPhysXDataPtr)
return;
if (!alreadyExists)
{
mPhysXDataPtr->bCpuPhysicsPresent = 0;
mPhysXDataPtr->bGpuPhysicsPresent = 0;
}
updateCounter(1);
// init header last to prevent race conditions
// this must be done because the driver may have already created the shared memory block,
// thus alreadyExists may be true, even if PhysX hasn't been initialized
NvPhysXToDrv_Header_Init(mPhysXDataPtr->header);
}
physx::PhysXIndicator::~PhysXIndicator()
{
if(mPhysXDataPtr)
{
updateCounter(-1);
UnmapViewOfFile(mPhysXDataPtr);
}
if(mFileHandle && mFileHandle != INVALID_HANDLE_VALUE)
CloseHandle(mFileHandle);
}
void physx::PhysXIndicator::setIsGpu(bool isGpu)
{
if(!mPhysXDataPtr)
return;
updateCounter(-1);
mIsGpu = isGpu;
updateCounter(1);
}
PX_INLINE void physx::PhysXIndicator::updateCounter(int delta)
{
(mIsGpu ? mPhysXDataPtr->bGpuPhysicsPresent
: mPhysXDataPtr->bCpuPhysicsPresent) += delta;
}
|