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
|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
//
#ifndef _HANDLETABLE_INL
#define _HANDLETABLE_INL
inline void HndAssignHandle(OBJECTHANDLE handle, OBJECTREF objref)
{
CONTRACTL
{
NOTHROW;
GC_NOTRIGGER;
SO_TOLERANT;
MODE_COOPERATIVE;
}
CONTRACTL_END;
// sanity
_ASSERTE(handle);
#ifdef _DEBUG_IMPL
// handle should not be in unloaded domain
ValidateAppDomainForHandle(handle);
// Make sure the objref is valid before it is assigned to a handle
ValidateAssignObjrefForHandle(objref, HndGetHandleTableADIndex(HndGetHandleTable(handle)));
#endif
// unwrap the objectref we were given
_UNCHECKED_OBJECTREF value = OBJECTREF_TO_UNCHECKED_OBJECTREF(objref);
HndLogSetEvent(handle, value);
// if we are doing a non-NULL pointer store then invoke the write-barrier
if (value)
HndWriteBarrier(handle, objref);
// store the pointer
*(_UNCHECKED_OBJECTREF *)handle = value;
}
inline void* HndInterlockedCompareExchangeHandle(OBJECTHANDLE handle, OBJECTREF objref, OBJECTREF oldObjref)
{
WRAPPER_NO_CONTRACT;
// sanity
_ASSERTE(handle);
#ifdef _DEBUG_IMPL
// handle should not be in unloaded domain
ValidateAppDomainForHandle(handle);
// Make sure the objref is valid before it is assigned to a handle
ValidateAssignObjrefForHandle(objref, HndGetHandleTableADIndex(HndGetHandleTable(handle)));
#endif
// unwrap the objectref we were given
_UNCHECKED_OBJECTREF value = OBJECTREF_TO_UNCHECKED_OBJECTREF(objref);
_UNCHECKED_OBJECTREF oldValue = OBJECTREF_TO_UNCHECKED_OBJECTREF(oldObjref);
// if we are doing a non-NULL pointer store then invoke the write-barrier
if (value)
HndWriteBarrier(handle, objref);
// store the pointer
void* ret = Interlocked::CompareExchangePointer(reinterpret_cast<_UNCHECKED_OBJECTREF volatile*>(handle), value, oldValue);
if (ret == oldValue)
HndLogSetEvent(handle, value);
return ret;
}
inline BOOL HndFirstAssignHandle(OBJECTHANDLE handle, OBJECTREF objref)
{
CONTRACTL
{
NOTHROW;
GC_NOTRIGGER;
SO_TOLERANT;
MODE_COOPERATIVE;
}
CONTRACTL_END;
// sanity
_ASSERTE(handle);
#ifdef _DEBUG_IMPL
// handle should not be in unloaded domain
ValidateAppDomainForHandle(handle);
// Make sure the objref is valid before it is assigned to a handle
ValidateAssignObjrefForHandle(objref, HndGetHandleTableADIndex(HndGetHandleTable(handle)));
#endif
// unwrap the objectref we were given
_UNCHECKED_OBJECTREF value = OBJECTREF_TO_UNCHECKED_OBJECTREF(objref);
_UNCHECKED_OBJECTREF null = NULL;
// store the pointer if we are the first ones here
BOOL success = (NULL == Interlocked::CompareExchangePointer(reinterpret_cast<_UNCHECKED_OBJECTREF volatile*>(handle),
value,
null));
// if we successfully did a non-NULL pointer store then invoke the write-barrier
if (success)
{
if (value)
HndWriteBarrier(handle, objref);
HndLogSetEvent(handle, value);
}
// return our result
return success;
}
#endif // _HANDLETABLE_INL
|
