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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
// 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.
//
// File: Table.h
//
//
// Class code:MetaData::Table represents a MetaData table.
//
// ======================================================================================
#pragma once
#include "external.h"
namespace MetaData
{
// --------------------------------------------------------------------------------------
//
// This class represents a read-only MetaData table (a continuous chunk of data).
//
class TableRO
{
friend class TableRW;
private:
//
// Private data
//
BYTE *m_pData;
public:
//
// Initialization
//
__checkReturn
inline HRESULT Initialize(
__range(2, UINT32_MAX) UINT32 cbRecordSize,
DataBlob sourceData,
BOOL fCopyData)
{
_ASSERTE(!fCopyData);
_ASSERTE((cbRecordSize == 0) || (sourceData.GetSize() % cbRecordSize == 0));
m_pData = sourceData.GetDataPointer();
return S_OK;
}
// Destroys the table and all its allocated data. Can run on uninitialized table.
inline void Delete()
{
m_pData = NULL;
}
public:
//
// Getters
//
__checkReturn
inline HRESULT GetRecord(
UINT32 nRowIndex,
__deref_out_opt BYTE **ppRecord,
UINT32 cbRecordSize,
UINT32 cRecordCount,
#ifdef FEATURE_PREJIT
struct HotTablesDirectory *pHotTablesDirectory,
#endif //FEATURE_PREJIT
UINT32 nTableIndex)
{
if ((nRowIndex == 0) || (nRowIndex > cRecordCount))
{
Debug_ReportError("Invalid record index.");
*ppRecord = NULL;
return CLDB_E_INDEX_NOTFOUND;
}
#ifdef FEATURE_PREJIT
if ((pHotTablesDirectory != NULL) && (pHotTablesDirectory->m_rgTableHeader_SignedOffset[nTableIndex] != 0))
{
HRESULT hr = HotTable::GetData(
nRowIndex,
ppRecord,
cbRecordSize,
HotTable::GetTableHeader(pHotTablesDirectory, nTableIndex));
if (hr == S_OK)
{
_ASSERTE(memcmp(
*ppRecord,
m_pData + (nRowIndex - 1) * cbRecordSize,
cbRecordSize) == 0);
return S_OK;
}
if (FAILED(hr))
{
*ppRecord = NULL;
return hr;
}
_ASSERTE(hr == S_FALSE);
}
#endif //FEATURE_PREJIT
*ppRecord = m_pData + (nRowIndex - 1) * cbRecordSize;
return S_OK;
} // TableRO::GetRecord
}; // class TableRO
// --------------------------------------------------------------------------------------
//
// This class represents a read-write MetaData table.
//
class TableRW
{
private:
//
// Private data
//
// The storage of table records.
RecordPool m_RecordStorage;
public:
//
// Initialization
//
// Initializes (empty) table of record size (cbRecordSize) with new allocated data for cRecordCount
// records.
__checkReturn
inline HRESULT InitializeEmpty_WithRecordCount(
__range(2, UINT32_MAX) UINT32 cbRecordSize,
__range(0, UINT32_MAX) UINT32 cRecordCount
COMMA_INDEBUG_MD( BOOL debug_fIsReadWrite))
{
return m_RecordStorage.InitNew(cbRecordSize, cRecordCount);
}
__checkReturn
inline HRESULT Initialize(
__range(2, UINT32_MAX) UINT32 cbRecordSize,
DataBlob sourceData,
BOOL fCopyData)
{
return m_RecordStorage.InitOnMem(cbRecordSize, sourceData.GetDataPointer(), sourceData.GetSize(), !fCopyData);
}
__checkReturn
inline HRESULT InitializeFromTable(
const TableRO *pSourceTable,
UINT32 cbRecordSize,
UINT32 cRecordCount,
BOOL fCopyData)
{
return m_RecordStorage.InitOnMem(cbRecordSize, pSourceTable->m_pData, cbRecordSize * cRecordCount, !fCopyData);
}
__checkReturn
inline HRESULT InitializeFromTable(
const TableRW *pSourceTable,
BOOL fCopyData)
{
_ASSERTE(fCopyData);
return m_RecordStorage.ReplaceContents(const_cast<RecordPool *>(&pSourceTable->m_RecordStorage));
}
// Destroys the table and all its allocated data. Can run on uninitialized table.
inline void Delete()
{
return m_RecordStorage.Uninit();
}
public:
//
// Getters
//
inline UINT32 GetRecordCount() const
{
return const_cast<RecordPool &>(m_RecordStorage).Count();
}
inline HRESULT GetRecordsDataSize(UINT32 *pcbSize) const
{
return m_RecordStorage.GetSaveSize(pcbSize);
}
__checkReturn
inline HRESULT GetRecord(
UINT32 nIndex,
__deref_out_opt BYTE **ppRecord)
{
return m_RecordStorage.GetRecord(nIndex, ppRecord);
}
__checkReturn
inline HRESULT SaveToStream(
IStream *pStream) const
{
return const_cast<RecordPool &>(m_RecordStorage).PersistToStream(pStream);
}
public:
//
// Setters
//
__checkReturn
inline HRESULT AddRecord(
__out BYTE **ppbRecord,
__out UINT32 *pnIndex)
{
return m_RecordStorage.AddRecord(ppbRecord, pnIndex);
}
__checkReturn
inline HRESULT InsertRecord(
UINT32 nIndex,
BYTE **ppbRecord)
{
return m_RecordStorage.InsertRecord(nIndex, ppbRecord);
}
// Makes table data writable, i.e. copies them into newly allocated chunk of memory. The caller
// guarantees that the table is not writable yet (otherwise this method asserts).
//
// Returns S_OK (even if the table is empty).
// Returns METADATA_E_INTERNAL_ERROR error code if the table has more segments.
__checkReturn
inline HRESULT MakeWritable()
{
return m_RecordStorage.ConvertToRW();
}
#ifdef _DEBUG_METADATA
// Sets table information for debugging.
void Debug_SetTableInfo(const char *szTableName, UINT32 nTableIndex)
{
}
#endif //_DEBUG_METADATA
}; // class TableRW
}; // namespace MetaData
|
