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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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25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 */ | 29 */ |
30 | 30 |
31 #ifndef SerializedScriptValue_h | 31 #ifndef SerializedScriptValue_h |
32 #define SerializedScriptValue_h | 32 #define SerializedScriptValue_h |
33 | 33 |
34 #include "bindings/v8/ScriptValue.h" | 34 #include "bindings/v8/ScriptValue.h" |
35 | |
36 #include "wtf/HashMap.h" | 35 #include "wtf/HashMap.h" |
37 #include "wtf/ThreadSafeRefCounted.h" | 36 #include "wtf/ThreadSafeRefCounted.h" |
38 #include <v8.h> | 37 #include <v8.h> |
39 | 38 |
40 namespace WTF { | 39 namespace WTF { |
41 | 40 |
42 class ArrayBuffer; | 41 class ArrayBuffer; |
43 class ArrayBufferContents; | 42 class ArrayBufferContents; |
44 | 43 |
45 } | 44 } |
46 | 45 |
47 namespace WebCore { | 46 namespace WebCore { |
48 | 47 |
49 class BlobDataHandle; | 48 class BlobDataHandle; |
| 49 class BlobInfo; |
50 class MessagePort; | 50 class MessagePort; |
51 | 51 |
52 typedef Vector<RefPtr<MessagePort>, 1> MessagePortArray; | 52 typedef Vector<RefPtr<MessagePort>, 1> MessagePortArray; |
53 typedef Vector<RefPtr<WTF::ArrayBuffer>, 1> ArrayBufferArray; | 53 typedef Vector<RefPtr<WTF::ArrayBuffer>, 1> ArrayBufferArray; |
54 typedef HashMap<String, RefPtr<BlobDataHandle> > BlobDataHandleMap; | 54 typedef HashMap<String, RefPtr<BlobDataHandle> > BlobDataHandleMap; |
55 | 55 |
56 class SerializedScriptValue FINAL : public ThreadSafeRefCounted<SerializedScript
Value> { | 56 class SerializedScriptValue FINAL : public ThreadSafeRefCounted<SerializedScript
Value> { |
57 public: | 57 public: |
58 // Increment this for each incompatible change to the wire format. | 58 // Increment this for each incompatible change to the wire format. |
59 // Version 2: Added StringUCharTag for UChar v8 strings. | 59 // Version 2: Added StringUCharTag for UChar v8 strings. |
60 // Version 3: Switched to using uuids as blob data identifiers. | 60 // Version 3: Switched to using uuids as blob data identifiers. |
61 static const uint32_t wireFormatVersion = 3; | 61 static const uint32_t wireFormatVersion = 3; |
62 | 62 |
63 ~SerializedScriptValue(); | 63 ~SerializedScriptValue(); |
64 | 64 |
65 // If a serialization error occurs (e.g., cyclic input value) this | 65 // If a serialization error occurs (e.g., cyclic input value) this |
66 // function returns an empty representation, schedules a V8 exception to | 66 // function returns an empty representation, schedules a V8 exception to |
67 // be thrown using v8::ThrowException(), and sets |didThrow|. In this case | 67 // be thrown using v8::ThrowException(), and sets |didThrow|. In this case |
68 // the caller must not invoke any V8 operations until control returns to | 68 // the caller must not invoke any V8 operations until control returns to |
69 // V8. When serialization is successful, |didThrow| is false. | 69 // V8. When serialization is successful, |didThrow| is false. |
70 static PassRefPtr<SerializedScriptValue> create(v8::Handle<v8::Value>, Messa
gePortArray*, ArrayBufferArray*, bool& didThrow, v8::Isolate*); | 70 static PassRefPtr<SerializedScriptValue> create(v8::Handle<v8::Value>, Messa
gePortArray*, ArrayBufferArray*, bool& didThrow, v8::Isolate*); |
| 71 static PassRefPtr<SerializedScriptValue> create(v8::Handle<v8::Value>, Messa
gePortArray*, ArrayBufferArray*, Vector<BlobInfo>*, bool& didThrow, v8::Isolate*
); |
71 static PassRefPtr<SerializedScriptValue> createFromWire(const String&); | 72 static PassRefPtr<SerializedScriptValue> createFromWire(const String&); |
72 static PassRefPtr<SerializedScriptValue> createFromWireBytes(const Vector<ui
nt8_t>&); | 73 static PassRefPtr<SerializedScriptValue> createFromWireBytes(const Vector<ui
nt8_t>&); |
73 static PassRefPtr<SerializedScriptValue> create(const String&); | 74 static PassRefPtr<SerializedScriptValue> create(const String&); |
74 static PassRefPtr<SerializedScriptValue> create(const String&, v8::Isolate*)
; | 75 static PassRefPtr<SerializedScriptValue> create(const String&, v8::Isolate*)
; |
75 static PassRefPtr<SerializedScriptValue> create(); | 76 static PassRefPtr<SerializedScriptValue> create(); |
76 | 77 static PassRefPtr<SerializedScriptValue> create(const ScriptValue&, Vector<B
lobInfo>*, bool& didThrow, ScriptState*); |
77 static PassRefPtr<SerializedScriptValue> create(const ScriptValue&, bool& di
dThrow, ScriptState*); | |
78 | 78 |
79 // Never throws exceptions. | 79 // Never throws exceptions. |
80 static PassRefPtr<SerializedScriptValue> createAndSwallowExceptions(v8::Hand
le<v8::Value>, v8::Isolate*); | 80 static PassRefPtr<SerializedScriptValue> createAndSwallowExceptions(v8::Hand
le<v8::Value>, v8::Isolate*); |
81 | 81 |
82 static PassRefPtr<SerializedScriptValue> nullValue(); | 82 static PassRefPtr<SerializedScriptValue> nullValue(); |
83 static PassRefPtr<SerializedScriptValue> nullValue(v8::Isolate*); | 83 static PassRefPtr<SerializedScriptValue> nullValue(v8::Isolate*); |
84 | 84 |
85 String toWireString() const { return m_data; } | 85 String toWireString() const { return m_data; } |
86 void toWireBytes(Vector<char>&) const; | 86 void toWireBytes(Vector<char>&) const; |
87 | 87 |
88 // Deserializes the value (in the current context). Returns a null value in | 88 // Deserializes the value (in the current context). Returns a null value in |
89 // case of failure. | 89 // case of failure. |
90 v8::Handle<v8::Value> deserialize(MessagePortArray* = 0); | 90 v8::Handle<v8::Value> deserialize(MessagePortArray* = 0); |
91 v8::Handle<v8::Value> deserialize(v8::Isolate*, MessagePortArray* = 0); | 91 v8::Handle<v8::Value> deserialize(v8::Isolate*, MessagePortArray* = 0, const |
92 | 92 Vector<BlobInfo>* = 0); |
93 // Only reflects the truth if the SSV was created by walking a v8 value, not
reliable | |
94 // if the SSV was created createdFromWire(data). | |
95 bool containsBlobs() const { return !m_blobDataHandles.isEmpty(); } | |
96 | 93 |
97 // Informs the V8 about external memory allocated and owned by this object.
Large values should contribute | 94 // Informs the V8 about external memory allocated and owned by this object.
Large values should contribute |
98 // to GC counters to eventually trigger a GC, otherwise flood of postMessage
() can cause OOM. | 95 // to GC counters to eventually trigger a GC, otherwise flood of postMessage
() can cause OOM. |
99 // Ok to invoke multiple times (only adds memory once). | 96 // Ok to invoke multiple times (only adds memory once). |
100 // The memory registration is revoked automatically in destructor. | 97 // The memory registration is revoked automatically in destructor. |
101 void registerMemoryAllocatedWithCurrentScriptContext(); | 98 void registerMemoryAllocatedWithCurrentScriptContext(); |
102 | 99 |
103 private: | 100 private: |
104 enum StringDataMode { | 101 enum StringDataMode { |
105 StringValue, | 102 StringValue, |
106 WireData | 103 WireData |
107 }; | 104 }; |
108 enum ExceptionPolicy { | 105 enum ExceptionPolicy { |
109 ThrowExceptions, | 106 ThrowExceptions, |
110 DoNotThrowExceptions | 107 DoNotThrowExceptions |
111 }; | 108 }; |
112 typedef Vector<WTF::ArrayBufferContents, 1> ArrayBufferContentsArray; | 109 typedef Vector<WTF::ArrayBufferContents, 1> ArrayBufferContentsArray; |
113 | 110 |
114 SerializedScriptValue(); | 111 SerializedScriptValue(); |
115 SerializedScriptValue(v8::Handle<v8::Value>, MessagePortArray*, ArrayBufferA
rray*, bool& didThrow, v8::Isolate*, ExceptionPolicy = ThrowExceptions); | 112 SerializedScriptValue(v8::Handle<v8::Value>, MessagePortArray*, ArrayBufferA
rray*, Vector<BlobInfo>*, bool& didThrow, v8::Isolate*, ExceptionPolicy = ThrowE
xceptions); |
116 explicit SerializedScriptValue(const String& wireData); | 113 explicit SerializedScriptValue(const String& wireData); |
117 | 114 |
118 static PassOwnPtr<ArrayBufferContentsArray> transferArrayBuffers(ArrayBuffer
Array&, bool& didThrow, v8::Isolate*); | 115 static PassOwnPtr<ArrayBufferContentsArray> transferArrayBuffers(ArrayBuffer
Array&, bool& didThrow, v8::Isolate*); |
119 | 116 |
120 String m_data; | 117 String m_data; |
121 OwnPtr<ArrayBufferContentsArray> m_arrayBufferContentsArray; | 118 OwnPtr<ArrayBufferContentsArray> m_arrayBufferContentsArray; |
122 BlobDataHandleMap m_blobDataHandles; | 119 BlobDataHandleMap m_blobDataHandles; |
123 intptr_t m_externallyAllocatedMemory; | 120 intptr_t m_externallyAllocatedMemory; |
124 }; | 121 }; |
125 | 122 |
126 } // namespace WebCore | 123 } // namespace WebCore |
127 | 124 |
128 #endif // SerializedScriptValue_h | 125 #endif // SerializedScriptValue_h |
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