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1 /* | 1 /* |
2 * Copyright (C) 2009, 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2009, 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 are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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40 namespace WTF { | 40 namespace WTF { |
41 | 41 |
42 class ArrayBuffer; | 42 class ArrayBuffer; |
43 class ArrayBufferContents; | 43 class ArrayBufferContents; |
44 | 44 |
45 } | 45 } |
46 | 46 |
47 namespace WebCore { | 47 namespace WebCore { |
48 | 48 |
49 class BlobDataHandle; | 49 class BlobDataHandle; |
| 50 class ExceptionState; |
50 class MessagePort; | 51 class MessagePort; |
51 | 52 |
52 typedef Vector<RefPtr<MessagePort>, 1> MessagePortArray; | 53 typedef Vector<RefPtr<MessagePort>, 1> MessagePortArray; |
53 typedef Vector<RefPtr<WTF::ArrayBuffer>, 1> ArrayBufferArray; | 54 typedef Vector<RefPtr<WTF::ArrayBuffer>, 1> ArrayBufferArray; |
54 typedef HashMap<String, RefPtr<BlobDataHandle> > BlobDataHandleMap; | 55 typedef HashMap<String, RefPtr<BlobDataHandle> > BlobDataHandleMap; |
55 | 56 |
56 class SerializedScriptValue FINAL : public ThreadSafeRefCounted<SerializedScript
Value> { | 57 class SerializedScriptValue FINAL : public ThreadSafeRefCounted<SerializedScript
Value> { |
57 public: | 58 public: |
58 // Increment this for each incompatible change to the wire format. | 59 // Increment this for each incompatible change to the wire format. |
59 // Version 2: Added StringUCharTag for UChar v8 strings. | 60 // Version 2: Added StringUCharTag for UChar v8 strings. |
60 // Version 3: Switched to using uuids as blob data identifiers. | 61 // Version 3: Switched to using uuids as blob data identifiers. |
61 // Version 4: Extended File serialization to be complete. | 62 // Version 4: Extended File serialization to be complete. |
62 static const uint32_t wireFormatVersion = 4; | 63 static const uint32_t wireFormatVersion = 4; |
63 | 64 |
64 ~SerializedScriptValue(); | 65 ~SerializedScriptValue(); |
65 | 66 |
66 // If a serialization error occurs (e.g., cyclic input value) this | 67 // If a serialization error occurs (e.g., cyclic input value) this |
67 // function returns an empty representation, schedules a V8 exception to | 68 // function returns an empty representation, schedules a V8 exception to |
68 // be thrown using v8::ThrowException(), and sets |didThrow|. In this case | 69 // be thrown using v8::ThrowException(), and sets |didThrow|. In this case |
69 // the caller must not invoke any V8 operations until control returns to | 70 // the caller must not invoke any V8 operations until control returns to |
70 // V8. When serialization is successful, |didThrow| is false. | 71 // V8. When serialization is successful, |didThrow| is false. |
71 static PassRefPtr<SerializedScriptValue> create(v8::Handle<v8::Value>, Messa
gePortArray*, ArrayBufferArray*, bool& didThrow, v8::Isolate*); | 72 static PassRefPtr<SerializedScriptValue> create(v8::Handle<v8::Value>, Messa
gePortArray*, ArrayBufferArray*, ExceptionState&, v8::Isolate*); |
72 static PassRefPtr<SerializedScriptValue> createFromWire(const String&); | 73 static PassRefPtr<SerializedScriptValue> createFromWire(const String&); |
73 static PassRefPtr<SerializedScriptValue> createFromWireBytes(const Vector<ui
nt8_t>&); | 74 static PassRefPtr<SerializedScriptValue> createFromWireBytes(const Vector<ui
nt8_t>&); |
74 static PassRefPtr<SerializedScriptValue> create(const String&); | 75 static PassRefPtr<SerializedScriptValue> create(const String&); |
75 static PassRefPtr<SerializedScriptValue> create(const String&, v8::Isolate*)
; | 76 static PassRefPtr<SerializedScriptValue> create(const String&, v8::Isolate*)
; |
76 static PassRefPtr<SerializedScriptValue> create(); | 77 static PassRefPtr<SerializedScriptValue> create(); |
77 | 78 |
78 static PassRefPtr<SerializedScriptValue> create(const ScriptValue&, bool& di
dThrow, ScriptState*); | 79 static PassRefPtr<SerializedScriptValue> create(const ScriptValue&, Exceptio
nState&, ScriptState*); |
79 | 80 |
80 // Never throws exceptions. | 81 // Never throws exceptions. |
81 static PassRefPtr<SerializedScriptValue> createAndSwallowExceptions(v8::Hand
le<v8::Value>, v8::Isolate*); | 82 static PassRefPtr<SerializedScriptValue> createAndSwallowExceptions(v8::Hand
le<v8::Value>, v8::Isolate*); |
82 | 83 |
83 static PassRefPtr<SerializedScriptValue> nullValue(); | 84 static PassRefPtr<SerializedScriptValue> nullValue(); |
84 static PassRefPtr<SerializedScriptValue> nullValue(v8::Isolate*); | 85 static PassRefPtr<SerializedScriptValue> nullValue(v8::Isolate*); |
85 | 86 |
86 String toWireString() const { return m_data; } | 87 String toWireString() const { return m_data; } |
87 void toWireBytes(Vector<char>&) const; | 88 void toWireBytes(Vector<char>&) const; |
88 | 89 |
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99 // to GC counters to eventually trigger a GC, otherwise flood of postMessage
() can cause OOM. | 100 // to GC counters to eventually trigger a GC, otherwise flood of postMessage
() can cause OOM. |
100 // Ok to invoke multiple times (only adds memory once). | 101 // Ok to invoke multiple times (only adds memory once). |
101 // The memory registration is revoked automatically in destructor. | 102 // The memory registration is revoked automatically in destructor. |
102 void registerMemoryAllocatedWithCurrentScriptContext(); | 103 void registerMemoryAllocatedWithCurrentScriptContext(); |
103 | 104 |
104 private: | 105 private: |
105 enum StringDataMode { | 106 enum StringDataMode { |
106 StringValue, | 107 StringValue, |
107 WireData | 108 WireData |
108 }; | 109 }; |
109 enum ExceptionPolicy { | |
110 ThrowExceptions, | |
111 DoNotThrowExceptions | |
112 }; | |
113 typedef Vector<WTF::ArrayBufferContents, 1> ArrayBufferContentsArray; | 110 typedef Vector<WTF::ArrayBufferContents, 1> ArrayBufferContentsArray; |
114 | 111 |
115 SerializedScriptValue(); | 112 SerializedScriptValue(); |
116 SerializedScriptValue(v8::Handle<v8::Value>, MessagePortArray*, ArrayBufferA
rray*, bool& didThrow, v8::Isolate*, ExceptionPolicy = ThrowExceptions); | 113 SerializedScriptValue(v8::Handle<v8::Value>, MessagePortArray*, ArrayBufferA
rray*, ExceptionState&, v8::Isolate*); |
117 explicit SerializedScriptValue(const String& wireData); | 114 explicit SerializedScriptValue(const String& wireData); |
118 | 115 |
119 static PassOwnPtr<ArrayBufferContentsArray> transferArrayBuffers(ArrayBuffer
Array&, bool& didThrow, v8::Isolate*); | 116 static PassOwnPtr<ArrayBufferContentsArray> transferArrayBuffers(ArrayBuffer
Array&, ExceptionState&, v8::Isolate*); |
120 | 117 |
121 String m_data; | 118 String m_data; |
122 OwnPtr<ArrayBufferContentsArray> m_arrayBufferContentsArray; | 119 OwnPtr<ArrayBufferContentsArray> m_arrayBufferContentsArray; |
123 BlobDataHandleMap m_blobDataHandles; | 120 BlobDataHandleMap m_blobDataHandles; |
124 intptr_t m_externallyAllocatedMemory; | 121 intptr_t m_externallyAllocatedMemory; |
125 }; | 122 }; |
126 | 123 |
127 } // namespace WebCore | 124 } // namespace WebCore |
128 | 125 |
129 #endif // SerializedScriptValue_h | 126 #endif // SerializedScriptValue_h |
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