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
133
134
135
136
|
/** @file
*
* VirtualBox 3D common tooling
*/
/*
* Copyright (C) 2011 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef ___VBox_VBoxVideo3D_h
#define ___VBox_VBoxVideo3D_h
#include <iprt/cdefs.h>
#include <iprt/asm.h>
#ifndef VBoxTlsRefGetImpl
# ifdef VBoxTlsRefSetImpl
# error "VBoxTlsRefSetImpl is defined, unexpected!"
# endif
# include <iprt/thread.h>
# define VBoxTlsRefGetImpl(_tls) (RTTlsGet((RTTLS)(_tls)))
# define VBoxTlsRefSetImpl(_tls, _val) (RTTlsSet((RTTLS)(_tls), (_val)))
#else
# ifndef VBoxTlsRefSetImpl
# error "VBoxTlsRefSetImpl is NOT defined, unexpected!"
# endif
#endif
#ifndef VBoxTlsRefAssertImpl
# define VBoxTlsRefAssertImpl(_a) do {} while (0)
#endif
typedef DECLCALLBACK(void) FNVBOXTLSREFDTOR(void*);
typedef FNVBOXTLSREFDTOR *PFNVBOXTLSREFDTOR;
typedef enum {
VBOXTLSREFDATA_STATE_UNDEFINED = 0,
VBOXTLSREFDATA_STATE_INITIALIZED,
VBOXTLSREFDATA_STATE_TOBE_DESTROYED,
VBOXTLSREFDATA_STATE_DESTROYING,
VBOXTLSREFDATA_STATE_32BIT_HACK = 0x7fffffff
} VBOXTLSREFDATA_STATE;
#define VBOXTLSREFDATA \
volatile int32_t cTlsRefs; \
VBOXTLSREFDATA_STATE enmTlsRefState; \
PFNVBOXTLSREFDTOR pfnTlsRefDtor; \
struct VBOXTLSREFDATA_DUMMY
{
VBOXTLSREFDATA
};
#define VBOXTLSREFDATA_OFFSET(_t) RT_OFFSETOF(_t, cTlsRefs)
#define VBOXTLSREFDATA_SIZE() (sizeof (struct VBOXTLSREFDATA_DUMMY))
#define VBOXTLSREFDATA_COPY(_pDst, _pSrc) do { \
(_pDst)->cTlsRefs = (_pSrc)->cTlsRefs; \
(_pDst)->enmTlsRefState = (_pSrc)->enmTlsRefState; \
(_pDst)->pfnTlsRefDtor = (_pSrc)->pfnTlsRefDtor; \
} while (0)
#define VBOXTLSREFDATA_EQUAL(_pDst, _pSrc) ( \
(_pDst)->cTlsRefs == (_pSrc)->cTlsRefs \
&& (_pDst)->enmTlsRefState == (_pSrc)->enmTlsRefState \
&& (_pDst)->pfnTlsRefDtor == (_pSrc)->pfnTlsRefDtor \
)
#define VBoxTlsRefInit(_p, _pfnDtor) do { \
(_p)->cTlsRefs = 1; \
(_p)->enmTlsRefState = VBOXTLSREFDATA_STATE_INITIALIZED; \
(_p)->pfnTlsRefDtor = (_pfnDtor); \
} while (0)
#define VBoxTlsRefIsFunctional(_p) (!!((_p)->enmTlsRefState == VBOXTLSREFDATA_STATE_INITIALIZED))
#define VBoxTlsRefAddRef(_p) do { \
int cRefs = ASMAtomicIncS32(&(_p)->cTlsRefs); \
VBoxTlsRefAssertImpl(cRefs > 1 || (_p)->enmTlsRefState == VBOXTLSREFDATA_STATE_DESTROYING); \
} while (0)
#define VBoxTlsRefRelease(_p) do { \
int cRefs = ASMAtomicDecS32(&(_p)->cTlsRefs); \
VBoxTlsRefAssertImpl(cRefs >= 0); \
if (!cRefs && (_p)->enmTlsRefState != VBOXTLSREFDATA_STATE_DESTROYING /* <- avoid recursion if VBoxTlsRefAddRef/Release is called from dtor */) { \
(_p)->enmTlsRefState = VBOXTLSREFDATA_STATE_DESTROYING; \
(_p)->pfnTlsRefDtor((_p)); \
} \
} while (0)
#define VBoxTlsRefMarkDestroy(_p) do { \
(_p)->enmTlsRefState = VBOXTLSREFDATA_STATE_TOBE_DESTROYED; \
} while (0)
#define VBoxTlsRefGetCurrent(_t, _Tsd) ((_t*) VBoxTlsRefGetImpl((_Tsd)))
#define VBoxTlsRefGetCurrentFunctional(_val, _t, _Tsd) do { \
_t * cur = VBoxTlsRefGetCurrent(_t, _Tsd); \
if (!cur || VBoxTlsRefIsFunctional(cur)) { \
(_val) = cur; \
} else { \
VBoxTlsRefSetCurrent(_t, _Tsd, NULL); \
(_val) = NULL; \
} \
} while (0)
#define VBoxTlsRefSetCurrent(_t, _Tsd, _p) do { \
_t * oldCur = VBoxTlsRefGetCurrent(_t, _Tsd); \
if (oldCur != (_p)) { \
VBoxTlsRefSetImpl((_Tsd), (_p)); \
if (oldCur) { \
VBoxTlsRefRelease(oldCur); \
} \
if ((_p)) { \
VBoxTlsRefAddRef((_t*)(_p)); \
} \
} \
} while (0)
#endif /* #ifndef ___VBox_VBoxVideo3D_h */
|
