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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 ActiveScriptWrappable_h | 5 #ifndef ActiveScriptWrappable_h |
6 #define ActiveScriptWrappable_h | 6 #define ActiveScriptWrappable_h |
7 | 7 |
8 #include "core/CoreExport.h" | 8 #include "core/CoreExport.h" |
9 #include "platform/heap/Handle.h" | 9 #include "platform/heap/Handle.h" |
10 #include "wtf/Noncopyable.h" | 10 #include "wtf/Noncopyable.h" |
11 | 11 |
12 namespace v8 { | 12 namespace v8 { |
13 class Isolate; | 13 class Isolate; |
14 } | 14 } |
15 | 15 |
16 namespace blink { | 16 namespace blink { |
17 | 17 |
18 class ScriptWrappable; | 18 class ScriptWrappable; |
19 class ScriptWrappableVisitor; | 19 class ScriptWrappableVisitor; |
20 | 20 |
21 /** | 21 /** |
22 * Classes deriving from ActiveScriptWrappable will be registered in a | 22 * Classes deriving from ActiveScriptWrappable will be registered in a |
23 * thread-specific list. They keep their wrappers and dependant objects alive | 23 * thread-specific list. They keep their wrappers and dependant objects alive |
24 * as long as they have pending activity. | 24 * as long as they have pending activity. |
25 */ | 25 */ |
26 class CORE_EXPORT ActiveScriptWrappable : public GarbageCollectedMixin { | 26 class CORE_EXPORT ActiveScriptWrappableBase : public GarbageCollectedMixin { |
27 WTF_MAKE_NONCOPYABLE(ActiveScriptWrappable); | 27 WTF_MAKE_NONCOPYABLE(ActiveScriptWrappableBase); |
28 | 28 |
29 public: | 29 public: |
30 explicit ActiveScriptWrappable(ScriptWrappable*); | 30 explicit ActiveScriptWrappableBase(ScriptWrappable*); |
31 | 31 |
32 static void traceActiveScriptWrappables(v8::Isolate*, | 32 static void traceActiveScriptWrappables(v8::Isolate*, |
33 ScriptWrappableVisitor*); | 33 ScriptWrappableVisitor*); |
34 | 34 |
35 protected: | |
36 virtual bool isContextDestroyed(ActiveScriptWrappableBase*) const = 0; | |
37 | |
35 private: | 38 private: |
36 ScriptWrappable* toScriptWrappable() const { return m_scriptWrappable; } | 39 ScriptWrappable* toScriptWrappable() const { return m_scriptWrappable; } |
37 | 40 |
38 ScriptWrappable* m_scriptWrappable; | 41 ScriptWrappable* m_scriptWrappable; |
39 }; | 42 }; |
40 | 43 |
44 template <typename T> | |
45 class CORE_EXPORT ActiveScriptWrappable : public ActiveScriptWrappableBase { | |
46 WTF_MAKE_NONCOPYABLE(ActiveScriptWrappable); | |
47 | |
48 public: | |
49 explicit ActiveScriptWrappable(ScriptWrappable* wrappable) | |
50 : ActiveScriptWrappableBase(wrappable) {} | |
51 | |
52 protected: | |
53 bool isContextDestroyed(ActiveScriptWrappableBase* object) const final { | |
54 return !(static_cast<T*>(object)->T::getExecutionContext)() || | |
haraken
2016/12/15 15:35:06
You're clever!
I'm surprised that all ActiveScrip
sof
2016/12/15 15:47:39
Or ContextLifecycleObserver.. or both (in which ca
| |
55 (static_cast<T*>(object)->T::getExecutionContext)() | |
56 ->isContextDestroyed(); | |
57 } | |
58 }; | |
59 | |
41 } // namespace blink | 60 } // namespace blink |
42 | 61 |
43 #endif // ActiveScriptWrappable_h | 62 #endif // ActiveScriptWrappable_h |
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