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
|
/*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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.
*/
#ifndef IconDatabase_h
#define IconDatabase_h
#include "StringHash.h"
#include "Timer.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/Noncopyable.h>
#include <wtf/OwnPtr.h>
#if ENABLE(ICONDATABASE)
#include "SQLiteDatabase.h"
#include <wtf/Threading.h>
#endif
namespace WebCore {
class DocumentLoader;
class Image;
class IntSize;
class IconDatabaseClient;
class IconRecord;
class IconSnapshot;
class KURL;
class PageURLRecord;
class PageURLSnapshot;
class SharedBuffer;
#if ENABLE(ICONDATABASE)
class SQLTransaction;
#endif
enum IconLoadDecision {
IconLoadYes,
IconLoadNo,
IconLoadUnknown
};
class IconDatabase : Noncopyable {
// *** Main Thread Only ***
public:
void setClient(IconDatabaseClient*);
bool open(const String& path);
void close();
void removeAllIcons();
Image* iconForPageURL(const String&, const IntSize&);
void readIconForPageURLFromDisk(const String&);
String iconURLForPageURL(const String&);
Image* defaultIcon(const IntSize&);
void retainIconForPageURL(const String&);
void releaseIconForPageURL(const String&);
void setIconDataForIconURL(PassRefPtr<SharedBuffer> data, const String&);
void setIconURLForPageURL(const String& iconURL, const String& pageURL);
IconLoadDecision loadDecisionForIconURL(const String&, DocumentLoader*);
bool iconDataKnownForIconURL(const String&);
void setEnabled(bool enabled);
bool isEnabled() const;
void setPrivateBrowsingEnabled(bool flag);
bool isPrivateBrowsingEnabled() const;
static void delayDatabaseCleanup();
static void allowDatabaseCleanup();
static void checkIntegrityBeforeOpening();
// Support for WebCoreStatistics in WebKit
size_t pageURLMappingCount();
size_t retainedPageURLCount();
size_t iconRecordCount();
size_t iconRecordCountWithData();
private:
IconDatabase();
~IconDatabase();
friend IconDatabase* iconDatabase();
#if ENABLE(ICONDATABASE)
static void notifyPendingLoadDecisionsOnMainThread(void*);
void notifyPendingLoadDecisions();
void wakeSyncThread();
void scheduleOrDeferSyncTimer();
void syncTimerFired(Timer<IconDatabase>*);
Timer<IconDatabase> m_syncTimer;
ThreadIdentifier m_syncThread;
bool m_syncThreadRunning;
HashSet<RefPtr<DocumentLoader> > m_loadersPendingDecision;
RefPtr<IconRecord> m_defaultIconRecord;
#endif // ENABLE(ICONDATABASE)
// *** Any Thread ***
public:
bool isOpen() const;
String databasePath() const;
static String defaultDatabaseFilename();
#if ENABLE(ICONDATABASE)
private:
PassRefPtr<IconRecord> getOrCreateIconRecord(const String& iconURL);
PageURLRecord* getOrCreatePageURLRecord(const String& pageURL);
bool m_isEnabled;
bool m_privateBrowsingEnabled;
mutable Mutex m_syncLock;
ThreadCondition m_syncCondition;
String m_databaseDirectory;
// Holding m_syncLock is required when accessing m_completeDatabasePath
String m_completeDatabasePath;
bool m_threadTerminationRequested;
bool m_removeIconsRequested;
bool m_iconURLImportComplete;
Mutex m_urlAndIconLock;
// Holding m_urlAndIconLock is required when accessing any of the following data structures or the objects they contain
HashMap<String, IconRecord*> m_iconURLToRecordMap;
HashMap<String, PageURLRecord*> m_pageURLToRecordMap;
HashSet<String> m_retainedPageURLs;
Mutex m_pendingSyncLock;
// Holding m_pendingSyncLock is required when accessing any of the following data structures
HashMap<String, PageURLSnapshot> m_pageURLsPendingSync;
HashMap<String, IconSnapshot> m_iconsPendingSync;
Mutex m_pendingReadingLock;
// Holding m_pendingSyncLock is required when accessing any of the following data structures - when dealing with IconRecord*s, holding m_urlAndIconLock is also required
HashSet<String> m_pageURLsPendingImport;
HashSet<String> m_pageURLsInterestedInIcons;
HashSet<IconRecord*> m_iconsPendingReading;
#endif // ENABLE(ICONDATABASE)
// *** Sync Thread Only ***
public:
// Should be used only on the sync thread and only by the Safari 2 Icons import procedure
void importIconURLForPageURL(const String& iconURL, const String& pageURL);
void importIconDataForIconURL(PassRefPtr<SharedBuffer> data, const String& iconURL);
bool shouldStopThreadActivity() const;
#if ENABLE(ICONDATABASE)
private:
static void* iconDatabaseSyncThreadStart(void *);
void* iconDatabaseSyncThread();
// The following block of methods are called exclusively by the sync thread to manage i/o to and from the database
// Each method should periodically monitor m_threadTerminationRequested when it makes sense to return early on shutdown
void performOpenInitialization();
bool checkIntegrity();
void performURLImport();
void* syncThreadMainLoop();
bool readFromDatabase();
bool writeToDatabase();
void pruneUnretainedIcons();
void checkForDanglingPageURLs(bool pruneIfFound);
void removeAllIconsOnThread();
void deleteAllPreparedStatements();
void* cleanupSyncThread();
// Record (on disk) whether or not Safari 2-style icons were imported (once per dataabse)
bool imported();
void setImported(bool);
bool m_initialPruningComplete;
void setIconURLForPageURLInSQLDatabase(const String&, const String&);
void setIconIDForPageURLInSQLDatabase(int64_t, const String&);
void removePageURLFromSQLDatabase(const String& pageURL);
int64_t getIconIDForIconURLFromSQLDatabase(const String& iconURL);
int64_t addIconURLToSQLDatabase(const String&);
PassRefPtr<SharedBuffer> getImageDataForIconURLFromSQLDatabase(const String& iconURL);
void removeIconFromSQLDatabase(const String& iconURL);
void writeIconSnapshotToSQLDatabase(const IconSnapshot&);
// The client is set by the main thread before the thread starts, and from then on is only used by the sync thread
IconDatabaseClient* m_client;
SQLiteDatabase m_syncDB;
// Track whether the "Safari 2" import is complete and/or set in the database
bool m_imported;
bool m_isImportedSet;
OwnPtr<SQLiteStatement> m_setIconIDForPageURLStatement;
OwnPtr<SQLiteStatement> m_removePageURLStatement;
OwnPtr<SQLiteStatement> m_getIconIDForIconURLStatement;
OwnPtr<SQLiteStatement> m_getImageDataForIconURLStatement;
OwnPtr<SQLiteStatement> m_addIconToIconInfoStatement;
OwnPtr<SQLiteStatement> m_addIconToIconDataStatement;
OwnPtr<SQLiteStatement> m_getImageDataStatement;
OwnPtr<SQLiteStatement> m_deletePageURLsForIconURLStatement;
OwnPtr<SQLiteStatement> m_deleteIconFromIconInfoStatement;
OwnPtr<SQLiteStatement> m_deleteIconFromIconDataStatement;
OwnPtr<SQLiteStatement> m_updateIconInfoStatement;
OwnPtr<SQLiteStatement> m_updateIconDataStatement;
OwnPtr<SQLiteStatement> m_setIconInfoStatement;
OwnPtr<SQLiteStatement> m_setIconDataStatement;
#endif // ENABLE(ICONDATABASE)
};
// Function to obtain the global icon database.
IconDatabase* iconDatabase();
} // namespace WebCore
#endif // IconDatabase_h
|
