1 | /* |
2 | * Copyright (C) 2004 Apple 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 |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #ifndef RUNTIME_ROOT_H_ |
27 | #define RUNTIME_ROOT_H_ |
28 | |
29 | #include <JavaScriptCore/Strong.h> |
30 | #include <JavaScriptCore/Weak.h> |
31 | #include <JavaScriptCore/WeakInlines.h> |
32 | #include <wtf/Forward.h> |
33 | #include <wtf/HashCountedSet.h> |
34 | #include <wtf/HashSet.h> |
35 | #include <wtf/Noncopyable.h> |
36 | #include <wtf/RefCounted.h> |
37 | |
38 | namespace JSC { |
39 | |
40 | class Interpreter; |
41 | class JSGlobalObject; |
42 | |
43 | namespace Bindings { |
44 | |
45 | class RootObject; |
46 | class RuntimeObject; |
47 | |
48 | typedef HashCountedSet<JSObject*> ProtectCountSet; |
49 | |
50 | extern RootObject* findProtectingRootObject(JSObject*); |
51 | extern RootObject* findRootObject(JSGlobalObject*); |
52 | |
53 | class RootObject : public RefCounted<RootObject>, private JSC::WeakHandleOwner { |
54 | friend class JavaJSObject; |
55 | |
56 | public: |
57 | WEBCORE_EXPORT virtual ~RootObject(); |
58 | |
59 | static Ref<RootObject> create(const void* nativeHandle, JSGlobalObject*); |
60 | |
61 | bool isValid() { return m_isValid; } |
62 | void invalidate(); |
63 | |
64 | void gcProtect(JSObject*); |
65 | void gcUnprotect(JSObject*); |
66 | bool gcIsProtected(JSObject*); |
67 | |
68 | const void* nativeHandle() const; |
69 | WEBCORE_EXPORT JSGlobalObject* globalObject() const; |
70 | void updateGlobalObject(JSGlobalObject*); |
71 | |
72 | void addRuntimeObject(VM&, RuntimeObject*); |
73 | void removeRuntimeObject(RuntimeObject*); |
74 | |
75 | struct InvalidationCallback { |
76 | virtual void operator()(RootObject*) = 0; |
77 | virtual ~InvalidationCallback(); |
78 | }; |
79 | void addInvalidationCallback(InvalidationCallback* callback) { m_invalidationCallbacks.add(callback); } |
80 | |
81 | private: |
82 | RootObject(const void* nativeHandle, JSGlobalObject*); |
83 | |
84 | // WeakHandleOwner |
85 | void finalize(JSC::Handle<JSC::Unknown>, void* context) override; |
86 | |
87 | bool m_isValid; |
88 | |
89 | const void* m_nativeHandle; |
90 | Strong<JSGlobalObject> m_globalObject; |
91 | |
92 | ProtectCountSet m_protectCountSet; |
93 | HashMap<RuntimeObject*, JSC::Weak<RuntimeObject>> m_runtimeObjects; // We use a map to implement a set. |
94 | |
95 | HashSet<InvalidationCallback*> m_invalidationCallbacks; |
96 | }; |
97 | |
98 | } // namespace Bindings |
99 | |
100 | } // namespace JSC |
101 | |
102 | #endif // RUNTIME_ROOT_H_ |
103 | |