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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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| 41 | 41 |
| 42 class ArrayBufferContents; | 42 class ArrayBufferContents; |
| 43 | 43 |
| 44 } | 44 } |
| 45 | 45 |
| 46 namespace blink { | 46 namespace blink { |
| 47 | 47 |
| 48 class BlobDataHandle; | 48 class BlobDataHandle; |
| 49 class DOMArrayBufferBase; | 49 class DOMArrayBufferBase; |
| 50 class ExceptionState; | 50 class ExceptionState; |
| 51 class ImageBitmap; | |
| 52 class MessagePort; | 51 class MessagePort; |
| 53 class WebBlobInfo; | 52 class WebBlobInfo; |
| 54 | 53 |
| 55 typedef HeapVector<Member<MessagePort>, 1> MessagePortArray; | 54 typedef HeapVector<Member<MessagePort>, 1> MessagePortArray; |
| 56 typedef Vector<RefPtr<DOMArrayBufferBase>, 1> ArrayBufferArray; | 55 typedef Vector<RefPtr<DOMArrayBufferBase>, 1> ArrayBufferArray; |
| 57 typedef HashMap<String, RefPtr<BlobDataHandle>> BlobDataHandleMap; | 56 typedef HashMap<String, RefPtr<BlobDataHandle>> BlobDataHandleMap; |
| 58 typedef Vector<WebBlobInfo> WebBlobInfoArray; | 57 typedef Vector<WebBlobInfo> WebBlobInfoArray; |
| 59 typedef WillBeHeapVector<RefPtrWillBeMember<ImageBitmap>, 1> ImageBitmapArray; | |
| 60 | 58 |
| 61 class CORE_EXPORT SerializedScriptValue : public ThreadSafeRefCounted<Serialized
ScriptValue> { | 59 class CORE_EXPORT SerializedScriptValue : public ThreadSafeRefCounted<Serialized
ScriptValue> { |
| 62 public: | 60 public: |
| 63 // Increment this for each incompatible change to the wire format. | 61 // Increment this for each incompatible change to the wire format. |
| 64 // Version 2: Added StringUCharTag for UChar v8 strings. | 62 // Version 2: Added StringUCharTag for UChar v8 strings. |
| 65 // Version 3: Switched to using uuids as blob data identifiers. | 63 // Version 3: Switched to using uuids as blob data identifiers. |
| 66 // Version 4: Extended File serialization to be complete. | 64 // Version 4: Extended File serialization to be complete. |
| 67 // Version 5: Added CryptoKeyTag for Key objects. | 65 // Version 5: Added CryptoKeyTag for Key objects. |
| 68 // Version 6: Added indexed serialization for File, Blob, and FileList. | 66 // Version 6: Added indexed serialization for File, Blob, and FileList. |
| 69 // Version 7: Extended File serialization with user visibility. | 67 // Version 7: Extended File serialization with user visibility. |
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| 84 | 82 |
| 85 // Deserializes the value (in the current context). Returns a null value in | 83 // Deserializes the value (in the current context). Returns a null value in |
| 86 // case of failure. | 84 // case of failure. |
| 87 v8::Local<v8::Value> deserialize(MessagePortArray* = 0); | 85 v8::Local<v8::Value> deserialize(MessagePortArray* = 0); |
| 88 v8::Local<v8::Value> deserialize(v8::Isolate*, MessagePortArray* = 0, const
WebBlobInfoArray* = 0); | 86 v8::Local<v8::Value> deserialize(v8::Isolate*, MessagePortArray* = 0, const
WebBlobInfoArray* = 0); |
| 89 | 87 |
| 90 // Helper function which pulls the values out of a JS sequence and into a Me
ssagePortArray. | 88 // Helper function which pulls the values out of a JS sequence and into a Me
ssagePortArray. |
| 91 // Also validates the elements per sections 4.1.13 and 4.1.15 of the WebIDL
spec and section 8.3.3 | 89 // Also validates the elements per sections 4.1.13 and 4.1.15 of the WebIDL
spec and section 8.3.3 |
| 92 // of the HTML5 spec and generates exceptions as appropriate. | 90 // of the HTML5 spec and generates exceptions as appropriate. |
| 93 // Returns true if the array was filled, or false if the passed value was no
t of an appropriate type. | 91 // Returns true if the array was filled, or false if the passed value was no
t of an appropriate type. |
| 94 static bool extractTransferables(v8::Isolate*, v8::Local<v8::Value>, int, Me
ssagePortArray&, ArrayBufferArray&, ImageBitmapArray&, ExceptionState&); | 92 static bool extractTransferables(v8::Isolate*, v8::Local<v8::Value>, int, Me
ssagePortArray&, ArrayBufferArray&, ExceptionState&); |
| 95 | 93 |
| 96 // 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 |
| 97 // 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. |
| 98 // Ok to invoke multiple times (only adds memory once). | 96 // Ok to invoke multiple times (only adds memory once). |
| 99 // The memory registration is revoked automatically in destructor. | 97 // The memory registration is revoked automatically in destructor. |
| 100 void registerMemoryAllocatedWithCurrentScriptContext(); | 98 void registerMemoryAllocatedWithCurrentScriptContext(); |
| 101 | 99 |
| 102 // Returns true if the value contains a transferable ArrayBuffer. | 100 // Returns true if the value contains a transferable ArrayBuffer. |
| 103 bool containsTransferableArrayBuffer() const; | 101 bool containsTransferableArrayBuffer() const; |
| 104 | 102 |
| 105 private: | 103 private: |
| 106 // The followings are private, but used by SerializedScriptValueFactory. | 104 // The followings are private, but used by SerializedScriptValueFactory. |
| 107 enum StringDataMode { | 105 enum StringDataMode { |
| 108 StringValue, | 106 StringValue, |
| 109 WireData | 107 WireData |
| 110 }; | 108 }; |
| 111 typedef Vector<WTF::ArrayBufferContents, 1> ArrayBufferContentsArray; | 109 typedef Vector<WTF::ArrayBufferContents, 1> ArrayBufferContentsArray; |
| 112 | 110 |
| 113 SerializedScriptValue(); | 111 SerializedScriptValue(); |
| 114 explicit SerializedScriptValue(const String& wireData); | 112 explicit SerializedScriptValue(const String& wireData); |
| 115 | 113 |
| 116 BlobDataHandleMap& blobDataHandles() { return m_blobDataHandles; } | 114 BlobDataHandleMap& blobDataHandles() { return m_blobDataHandles; } |
| 117 String& data() { return m_data; } | 115 String& data() { return m_data; } |
| 118 void setData(const String& data) { m_data = data; } | 116 void setData(const String& data) { m_data = data; } |
| 119 void transferArrayBuffers(v8::Isolate*, ArrayBufferArray&, ExceptionState&); | 117 void transferArrayBuffers(v8::Isolate*, ArrayBufferArray&, ExceptionState&); |
| 120 void transferImageBitmaps(v8::Isolate*, ImageBitmapArray&, ExceptionState&); | |
| 121 ArrayBufferContentsArray* arrayBufferContentsArray() { return m_arrayBufferC
ontentsArray.get(); } | 118 ArrayBufferContentsArray* arrayBufferContentsArray() { return m_arrayBufferC
ontentsArray.get(); } |
| 122 ImageBitmapArray* imageBitmapArray() { return m_imageBitmapsArray.get(); } | |
| 123 | 119 |
| 124 static PassOwnPtr<ArrayBufferContentsArray> createArrayBuffers(v8::Isolate*,
ArrayBufferArray&, ExceptionState&); | 120 static PassOwnPtr<ArrayBufferContentsArray> createArrayBuffers(v8::Isolate*,
ArrayBufferArray&, ExceptionState&); |
| 125 static PassOwnPtrWillBeRawPtr<ImageBitmapArray> createImageBitmaps(v8::Isola
te*, ImageBitmapArray&, ExceptionState&); | |
| 126 | 121 |
| 127 private: | 122 private: |
| 128 String m_data; | 123 String m_data; |
| 129 OwnPtr<ArrayBufferContentsArray> m_arrayBufferContentsArray; | 124 OwnPtr<ArrayBufferContentsArray> m_arrayBufferContentsArray; |
| 130 OwnPtrWillBePersistent<ImageBitmapArray> m_imageBitmapsArray; | |
| 131 BlobDataHandleMap m_blobDataHandles; | 125 BlobDataHandleMap m_blobDataHandles; |
| 132 intptr_t m_externallyAllocatedMemory; | 126 intptr_t m_externallyAllocatedMemory; |
| 133 | 127 |
| 134 friend class SerializedScriptValueFactory; | 128 friend class SerializedScriptValueFactory; |
| 135 }; | 129 }; |
| 136 | 130 |
| 137 } // namespace blink | 131 } // namespace blink |
| 138 | 132 |
| 139 #endif // SerializedScriptValue_h | 133 #endif // SerializedScriptValue_h |
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