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Side by Side Diff: third_party/WebKit/Source/core/dom/ScriptRunner.cpp

Issue 1801053002: Revert of Stop scheduling in-order script execution upon hitting failed script. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 9 months ago
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1 /* 1 /*
2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. 2 * Copyright (C) 2010 Google, Inc. All Rights Reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
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122 m_isSuspended = false; 122 m_isSuspended = false;
123 123
124 for (size_t i = 0; i < m_asyncScriptsToExecuteSoon.size(); ++i) { 124 for (size_t i = 0; i < m_asyncScriptsToExecuteSoon.size(); ++i) {
125 postTask(BLINK_FROM_HERE); 125 postTask(BLINK_FROM_HERE);
126 } 126 }
127 for (size_t i = 0; i < m_inOrderScriptsToExecuteSoon.size(); ++i) { 127 for (size_t i = 0; i < m_inOrderScriptsToExecuteSoon.size(); ++i) {
128 postTask(BLINK_FROM_HERE); 128 postTask(BLINK_FROM_HERE);
129 } 129 }
130 } 130 }
131 131
132 void ScriptRunner::scheduleReadyInOrderScripts()
133 {
134 while (!m_pendingInOrderScripts.isEmpty() && m_pendingInOrderScripts.first() ->isReady()) {
135 // A ScriptLoader that failed is responsible for cancelling itself
136 // notifyScriptLoadError(); it continues this draining of ready scripts.
137 if (m_pendingInOrderScripts.first()->errorOccurred())
138 break;
139 m_inOrderScriptsToExecuteSoon.append(m_pendingInOrderScripts.takeFirst() );
140 postTask(BLINK_FROM_HERE);
141 }
142 }
143
144 void ScriptRunner::notifyScriptReady(ScriptLoader* scriptLoader, ExecutionType e xecutionType) 132 void ScriptRunner::notifyScriptReady(ScriptLoader* scriptLoader, ExecutionType e xecutionType)
145 { 133 {
146 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(scriptLoader); 134 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(scriptLoader);
147 switch (executionType) { 135 switch (executionType) {
148 case ASYNC_EXECUTION: 136 case ASYNC_EXECUTION:
149 // RELEASE_ASSERT makes us crash in a controlled way in error cases 137 // RELEASE_ASSERT makes us crash in a controlled way in error cases
150 // where the ScriptLoader is associated with the wrong ScriptRunner 138 // where the ScriptLoader is associated with the wrong ScriptRunner
151 // (otherwise we'd cause a use-after-free in ~ScriptRunner when it tries 139 // (otherwise we'd cause a use-after-free in ~ScriptRunner when it tries
152 // to detach). 140 // to detach).
153 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(m_pendingAsyncScripts.contains( scriptLoader)); 141 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(m_pendingAsyncScripts.contains( scriptLoader));
154 142
155 m_pendingAsyncScripts.remove(scriptLoader); 143 m_pendingAsyncScripts.remove(scriptLoader);
156 m_asyncScriptsToExecuteSoon.append(scriptLoader); 144 m_asyncScriptsToExecuteSoon.append(scriptLoader);
157 145
158 postTask(BLINK_FROM_HERE); 146 postTask(BLINK_FROM_HERE);
159 147
160 break; 148 break;
161 149
162 case IN_ORDER_EXECUTION: 150 case IN_ORDER_EXECUTION:
163 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(m_numberOfInOrderScriptsWithPen dingNotification > 0); 151 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(m_numberOfInOrderScriptsWithPen dingNotification > 0);
164 m_numberOfInOrderScriptsWithPendingNotification--; 152 m_numberOfInOrderScriptsWithPendingNotification--;
165 153
166 scheduleReadyInOrderScripts(); 154 while (!m_pendingInOrderScripts.isEmpty() && m_pendingInOrderScripts.fir st()->isReady()) {
155 m_inOrderScriptsToExecuteSoon.append(m_pendingInOrderScripts.takeFir st());
156 postTask(BLINK_FROM_HERE);
157 }
167 158
168 break; 159 break;
169 } 160 }
170 } 161 }
171 162
172 bool ScriptRunner::removePendingInOrderScript(ScriptLoader* scriptLoader) 163 bool ScriptRunner::removePendingInOrderScript(ScriptLoader* scriptLoader)
173 { 164 {
174 for (auto it = m_pendingInOrderScripts.begin(); it != m_pendingInOrderScript s.end(); ++it) { 165 for (auto it = m_pendingInOrderScripts.begin(); it != m_pendingInOrderScript s.end(); ++it) {
175 if (*it == scriptLoader) { 166 if (*it == scriptLoader) {
176 m_pendingInOrderScripts.remove(it); 167 m_pendingInOrderScripts.remove(it);
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198 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(foundLoader); 189 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(foundLoader);
199 m_pendingAsyncScripts.remove(scriptLoader); 190 m_pendingAsyncScripts.remove(scriptLoader);
200 break; 191 break;
201 } 192 }
202 case IN_ORDER_EXECUTION: 193 case IN_ORDER_EXECUTION:
203 bool foundLoader = removePendingInOrderScript(scriptLoader); 194 bool foundLoader = removePendingInOrderScript(scriptLoader);
204 #if !ENABLE(OILPAN) 195 #if !ENABLE(OILPAN)
205 foundLoader = foundLoader || m_isDisposed; 196 foundLoader = foundLoader || m_isDisposed;
206 #endif 197 #endif
207 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(foundLoader); 198 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(foundLoader);
208 scheduleReadyInOrderScripts();
209 break; 199 break;
210 } 200 }
211 m_document->decrementLoadEventDelayCount(); 201 m_document->decrementLoadEventDelayCount();
212 } 202 }
213 203
214 void ScriptRunner::movePendingScript(Document& oldDocument, Document& newDocumen t, ScriptLoader* scriptLoader) 204 void ScriptRunner::movePendingScript(Document& oldDocument, Document& newDocumen t, ScriptLoader* scriptLoader)
215 { 205 {
216 RefPtrWillBeRawPtr<Document> newContextDocument = newDocument.contextDocumen t().get(); 206 RefPtrWillBeRawPtr<Document> newContextDocument = newDocument.contextDocumen t().get();
217 if (!newContextDocument) { 207 if (!newContextDocument) {
218 // Document's contextDocument() method will return no Document if the 208 // Document's contextDocument() method will return no Document if the
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284 #if ENABLE(OILPAN) 274 #if ENABLE(OILPAN)
285 visitor->trace(m_document); 275 visitor->trace(m_document);
286 visitor->trace(m_pendingInOrderScripts); 276 visitor->trace(m_pendingInOrderScripts);
287 visitor->trace(m_pendingAsyncScripts); 277 visitor->trace(m_pendingAsyncScripts);
288 visitor->trace(m_asyncScriptsToExecuteSoon); 278 visitor->trace(m_asyncScriptsToExecuteSoon);
289 visitor->trace(m_inOrderScriptsToExecuteSoon); 279 visitor->trace(m_inOrderScriptsToExecuteSoon);
290 #endif 280 #endif
291 } 281 }
292 282
293 } // namespace blink 283 } // namespace blink
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