OLD | NEW |
1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef ScriptState_h | 5 #ifndef ScriptState_h |
6 #define ScriptState_h | 6 #define ScriptState_h |
7 | 7 |
8 #include "bindings/core/v8/ScopedPersistent.h" | 8 #include "bindings/core/v8/ScopedPersistent.h" |
9 #include "bindings/core/v8/V8PerContextData.h" | 9 #include "bindings/core/v8/V8PerContextData.h" |
10 #include "core/CoreExport.h" | 10 #include "core/CoreExport.h" |
(...skipping 137 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
148 | 148 |
149 // This can return an empty handle if the v8::Context is gone. | 149 // This can return an empty handle if the v8::Context is gone. |
150 v8::Local<v8::Context> context() const { | 150 v8::Local<v8::Context> context() const { |
151 return m_context.newLocal(m_isolate); | 151 return m_context.newLocal(m_isolate); |
152 } | 152 } |
153 bool contextIsValid() const { | 153 bool contextIsValid() const { |
154 return !m_context.isEmpty() && m_perContextData; | 154 return !m_context.isEmpty() && m_perContextData; |
155 } | 155 } |
156 void detachGlobalObject(); | 156 void detachGlobalObject(); |
157 void clearContext() { return m_context.clear(); } | 157 void clearContext() { return m_context.clear(); } |
158 #if DCHECK_IS_ON() | |
159 bool isGlobalObjectDetached() const { return m_globalObjectDetached; } | |
160 #endif | |
161 | 158 |
162 V8PerContextData* perContextData() const { return m_perContextData.get(); } | 159 V8PerContextData* perContextData() const { return m_perContextData.get(); } |
163 void disposePerContextData(); | 160 void disposePerContextData(); |
164 | 161 |
165 ScriptValue getFromExtrasExports(const char* name); | 162 ScriptValue getFromExtrasExports(const char* name); |
166 | 163 |
167 protected: | 164 protected: |
168 ScriptState(v8::Local<v8::Context>, PassRefPtr<DOMWrapperWorld>); | 165 ScriptState(v8::Local<v8::Context>, PassRefPtr<DOMWrapperWorld>); |
169 | 166 |
170 private: | 167 private: |
171 v8::Isolate* m_isolate; | 168 v8::Isolate* m_isolate; |
172 // This persistent handle is weak. | 169 // This persistent handle is weak. |
173 ScopedPersistent<v8::Context> m_context; | 170 ScopedPersistent<v8::Context> m_context; |
174 | 171 |
175 // This RefPtr doesn't cause a cycle because all persistent handles that | 172 // This RefPtr doesn't cause a cycle because all persistent handles that |
176 // DOMWrapperWorld holds are weak. | 173 // DOMWrapperWorld holds are weak. |
177 RefPtr<DOMWrapperWorld> m_world; | 174 RefPtr<DOMWrapperWorld> m_world; |
178 | 175 |
179 // This std::unique_ptr causes a cycle: | 176 // This std::unique_ptr causes a cycle: |
180 // V8PerContextData --(Persistent)--> v8::Context --(RefPtr)--> ScriptState | 177 // V8PerContextData --(Persistent)--> v8::Context --(RefPtr)--> ScriptState |
181 // --(std::unique_ptr)--> V8PerContextData | 178 // --(std::unique_ptr)--> V8PerContextData |
182 // So you must explicitly clear the std::unique_ptr by calling | 179 // So you must explicitly clear the std::unique_ptr by calling |
183 // disposePerContextData() once you no longer need V8PerContextData. | 180 // disposePerContextData() once you no longer need V8PerContextData. |
184 // Otherwise, the v8::Context will leak. | 181 // Otherwise, the v8::Context will leak. |
185 std::unique_ptr<V8PerContextData> m_perContextData; | 182 std::unique_ptr<V8PerContextData> m_perContextData; |
186 | |
187 #if DCHECK_IS_ON() | |
188 bool m_globalObjectDetached = false; | |
189 #endif | |
190 }; | 183 }; |
191 | 184 |
192 // ScriptStateProtectingContext keeps the context associated with the | 185 // ScriptStateProtectingContext keeps the context associated with the |
193 // ScriptState alive. You need to call clear() once you no longer need the | 186 // ScriptState alive. You need to call clear() once you no longer need the |
194 // context. Otherwise, the context will leak. | 187 // context. Otherwise, the context will leak. |
195 class ScriptStateProtectingContext { | 188 class ScriptStateProtectingContext { |
196 WTF_MAKE_NONCOPYABLE(ScriptStateProtectingContext); | 189 WTF_MAKE_NONCOPYABLE(ScriptStateProtectingContext); |
197 USING_FAST_MALLOC(ScriptStateProtectingContext); | 190 USING_FAST_MALLOC(ScriptStateProtectingContext); |
198 | 191 |
199 public: | 192 public: |
(...skipping 11 matching lines...) Expand all Loading... |
211 } | 204 } |
212 | 205 |
213 private: | 206 private: |
214 RefPtr<ScriptState> m_scriptState; | 207 RefPtr<ScriptState> m_scriptState; |
215 ScopedPersistent<v8::Context> m_context; | 208 ScopedPersistent<v8::Context> m_context; |
216 }; | 209 }; |
217 | 210 |
218 } // namespace blink | 211 } // namespace blink |
219 | 212 |
220 #endif // ScriptState_h | 213 #endif // ScriptState_h |
OLD | NEW |