1 /*
2 * Copyright (C) 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "V8DOMMap.h"
33
34 #include "DOMData.h"
35 #include "DOMDataStore.h"
36 #include "DOMObjectsInclude.h"
37 #include "MainThreadDOMData.h"
38 #include "ScopedDOMDataStore.h"
39
40 namespace WebCore {
41
DOMDataStoreHandle()42 DOMDataStoreHandle::DOMDataStoreHandle()
43 : m_store(new ScopedDOMDataStore(DOMData::getCurrent()))
44 {
45 }
46
~DOMDataStoreHandle()47 DOMDataStoreHandle::~DOMDataStoreHandle()
48 {
49 }
50
51 static bool fasterDOMStoreAccess = false;
52
getDOMDataStore()53 static inline DOMDataStore& getDOMDataStore()
54 {
55 if (LIKELY(fasterDOMStoreAccess)) {
56 ASSERT(WTF::isMainThread());
57 return MainThreadDOMData::getCurrentMainThreadStore();
58 }
59
60 return DOMData::getCurrent()->getStore();
61 }
62
enableFasterDOMStoreAccess()63 void enableFasterDOMStoreAccess()
64 {
65 fasterDOMStoreAccess = true;
66 }
67
getDOMNodeMap()68 DOMNodeMapping& getDOMNodeMap()
69 {
70 return getDOMDataStore().domNodeMap();
71 }
72
getDOMObjectMap()73 DOMWrapperMap<void>& getDOMObjectMap()
74 {
75 return getDOMDataStore().domObjectMap();
76 }
77
getActiveDOMObjectMap()78 DOMWrapperMap<void>& getActiveDOMObjectMap()
79 {
80 return getDOMDataStore().activeDomObjectMap();
81 }
82
83 #if ENABLE(SVG)
84
getDOMSVGElementInstanceMap()85 DOMWrapperMap<SVGElementInstance>& getDOMSVGElementInstanceMap()
86 {
87 return getDOMDataStore().domSvgElementInstanceMap();
88 }
89
90 // Map of SVG objects with contexts to V8 objects
getDOMSVGObjectWithContextMap()91 DOMWrapperMap<void>& getDOMSVGObjectWithContextMap()
92 {
93 return getDOMDataStore().domSvgObjectWithContextMap();
94 }
95
96 #endif // ENABLE(SVG)
97
removeAllDOMObjectsInCurrentThreadHelper()98 static void removeAllDOMObjectsInCurrentThreadHelper()
99 {
100 v8::HandleScope scope;
101
102 // Deref all objects in the delayed queue.
103 DOMData::getCurrent()->derefDelayedObjects();
104
105 // The DOM objects with the following types only exist on the main thread.
106 if (WTF::isMainThread()) {
107 // Remove all DOM nodes.
108 DOMData::removeObjectsFromWrapperMap<Node>(getDOMNodeMap());
109
110 #if ENABLE(SVG)
111 // Remove all SVG element instances in the wrapper map.
112 DOMData::removeObjectsFromWrapperMap<SVGElementInstance>(getDOMSVGElementInstanceMap());
113
114 // Remove all SVG objects with context in the wrapper map.
115 DOMData::removeObjectsFromWrapperMap<void>(getDOMSVGObjectWithContextMap());
116 #endif
117 }
118
119 // Remove all DOM objects in the wrapper map.
120 DOMData::removeObjectsFromWrapperMap<void>(getDOMObjectMap());
121
122 // Remove all active DOM objects in the wrapper map.
123 DOMData::removeObjectsFromWrapperMap<void>(getActiveDOMObjectMap());
124 }
125
removeAllDOMObjectsInCurrentThread()126 void removeAllDOMObjectsInCurrentThread()
127 {
128 // Use the locker only if it has already been invoked before, as by worker thread.
129 if (v8::Locker::IsActive()) {
130 v8::Locker locker;
131 removeAllDOMObjectsInCurrentThreadHelper();
132 } else
133 removeAllDOMObjectsInCurrentThreadHelper();
134 }
135
136
visitDOMNodesInCurrentThread(DOMWrapperMap<Node>::Visitor * visitor)137 void visitDOMNodesInCurrentThread(DOMWrapperMap<Node>::Visitor* visitor)
138 {
139 v8::HandleScope scope;
140
141 WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
142 DOMDataList& list = DOMDataStore::allStores();
143 for (size_t i = 0; i < list.size(); ++i) {
144 DOMDataStore* store = list[i];
145 if (!store->domData()->owningThread() == WTF::currentThread())
146 continue;
147
148 store->domNodeMap().visit(visitor);
149 }
150 }
151
visitDOMObjectsInCurrentThread(DOMWrapperMap<void>::Visitor * visitor)152 void visitDOMObjectsInCurrentThread(DOMWrapperMap<void>::Visitor* visitor)
153 {
154 v8::HandleScope scope;
155
156 WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
157 DOMDataList& list = DOMDataStore::allStores();
158 for (size_t i = 0; i < list.size(); ++i) {
159 DOMDataStore* store = list[i];
160 if (!store->domData()->owningThread() == WTF::currentThread())
161 continue;
162
163 store->domObjectMap().visit(visitor);
164 }
165 }
166
visitActiveDOMObjectsInCurrentThread(DOMWrapperMap<void>::Visitor * visitor)167 void visitActiveDOMObjectsInCurrentThread(DOMWrapperMap<void>::Visitor* visitor)
168 {
169 v8::HandleScope scope;
170
171 WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
172 DOMDataList& list = DOMDataStore::allStores();
173 for (size_t i = 0; i < list.size(); ++i) {
174 DOMDataStore* store = list[i];
175 if (!store->domData()->owningThread() == WTF::currentThread())
176 continue;
177
178 store->activeDomObjectMap().visit(visitor);
179 }
180 }
181
182 #if ENABLE(SVG)
183
visitDOMSVGElementInstancesInCurrentThread(DOMWrapperMap<SVGElementInstance>::Visitor * visitor)184 void visitDOMSVGElementInstancesInCurrentThread(DOMWrapperMap<SVGElementInstance>::Visitor* visitor)
185 {
186 v8::HandleScope scope;
187
188 WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
189 DOMDataList& list = DOMDataStore::allStores();
190 for (size_t i = 0; i < list.size(); ++i) {
191 DOMDataStore* store = list[i];
192 if (!store->domData()->owningThread() == WTF::currentThread())
193 continue;
194
195 store->domSvgElementInstanceMap().visit(visitor);
196 }
197 }
198
visitSVGObjectsInCurrentThread(DOMWrapperMap<void>::Visitor * visitor)199 void visitSVGObjectsInCurrentThread(DOMWrapperMap<void>::Visitor* visitor)
200 {
201 v8::HandleScope scope;
202
203 WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
204 DOMDataList& list = DOMDataStore::allStores();
205 for (size_t i = 0; i < list.size(); ++i) {
206 DOMDataStore* store = list[i];
207 if (!store->domData()->owningThread() == WTF::currentThread())
208 continue;
209
210 store->domSvgObjectWithContextMap().visit(visitor);
211 }
212 }
213
214 #endif
215
216 } // namespace WebCore
217