[wasm] enable wasm structured cloning in specific cases

third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.h

 /*
  * Copyright (C) 2009, 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 42 matching lines @@
 class WebBlobInfo;
 
 typedef HashMap<String, RefPtr<BlobDataHandle>> BlobDataHandleMap;
 typedef Vector<WebBlobInfo> WebBlobInfoArray;
 
 class CORE_EXPORT SerializedScriptValue
     : public ThreadSafeRefCounted<SerializedScriptValue> {
  public:
   using ArrayBufferContentsArray = Vector<WTF::ArrayBufferContents, 1>;
   using ImageBitmapContentsArray = Vector<RefPtr<StaticBitmapImage>, 1>;
+  using TransferredWasmModulesArray =
+      std::vector<v8::WasmCompiledModule::TransferrableModule>;

[jbroman, 2017/03/27 18:50:52]

Vector, not std::vector, in Blink

[Mircea Trofin, 2017/03/27 20:52:33]

Done.

 
   // Increment this for each incompatible change to the wire format.
   // Version 2: Added StringUCharTag for UChar v8 strings.
   // Version 3: Switched to using uuids as blob data identifiers.
   // Version 4: Extended File serialization to be complete.
   // Version 5: Added CryptoKeyTag for Key objects.
   // Version 6: Added indexed serialization for File, Blob, and FileList.
   // Version 7: Extended File serialization with user visibility.
   // Version 8: File.lastModified in milliseconds (seconds-based in earlier
   //            versions.)
   // Version 9: Added Map and Set support.
   // [versions skipped]
   // Version 16: Separate versioning between V8 and Blink.
   static const uint32_t wireFormatVersion = 16;
 
   struct SerializeOptions {
     STACK_ALLOCATED();
     Transferables* transferables = nullptr;
     WebBlobInfoArray* blobInfo = nullptr;
+    bool writeWasmToStream = false;
   };
   static PassRefPtr<SerializedScriptValue> serialize(v8::Isolate*,
                                                      v8::Local<v8::Value>,
                                                      const SerializeOptions&,
                                                      ExceptionState&);
   static PassRefPtr<SerializedScriptValue> serializeAndSwallowExceptions(
       v8::Isolate*,
       v8::Local<v8::Value>);
 
   static PassRefPtr<SerializedScriptValue> create();
   static PassRefPtr<SerializedScriptValue> create(const String&);
   static PassRefPtr<SerializedScriptValue> create(const char* data,
                                                   size_t length);
 
   ~SerializedScriptValue();
 
   static PassRefPtr<SerializedScriptValue> nullValue();
 
   String toWireString() const;
   void toWireBytes(Vector<char>&) const;
 
   // Deserializes the value (in the current context). Returns a null value in
   // case of failure.
   struct DeserializeOptions {
     STACK_ALLOCATED();
     MessagePortArray* messagePorts = nullptr;
     const WebBlobInfoArray* blobInfo = nullptr;
+    bool readWasmFromStream = false;
   };
   v8::Local<v8::Value> deserialize(v8::Isolate* isolate) {
     return deserialize(isolate, DeserializeOptions());
   }
   v8::Local<v8::Value> deserialize(v8::Isolate*, const DeserializeOptions&);
 
   // Helper function which pulls the values out of a JS sequence and into a
   // MessagePortArray.  Also validates the elements per sections 4.1.13 and
   // 4.1.15 of the WebIDL spec and section 8.3.3 of the HTML5 spec and generates
   // exceptions as appropriate.
@@ skipping 37 matching lines @@
   size_t dataLengthInBytes() const { return m_dataBufferSize; }
 
   BlobDataHandleMap& blobDataHandles() { return m_blobDataHandles; }
   ArrayBufferContentsArray* getArrayBufferContentsArray() {
     return m_arrayBufferContentsArray.get();
   }
   ImageBitmapContentsArray* getImageBitmapContentsArray() {
     return m_imageBitmapContentsArray.get();
   }
 
+  TransferredWasmModulesArray& wasmModules() { return m_wasmModules; }
+
  private:
   friend class ScriptValueSerializer;
   friend class V8ScriptValueSerializer;
 
   struct BufferDeleter {
     void operator()(uint8_t* buffer) { WTF::Partitions::bufferFree(buffer); }
   };
   using DataBufferPtr = std::unique_ptr<uint8_t[], BufferDeleter>;
 
   SerializedScriptValue();
@@ skipping 12 matching lines @@
                             ExceptionState&);
   void transferOffscreenCanvas(v8::Isolate*,
                                const OffscreenCanvasArray&,
                                ExceptionState&);
 
   DataBufferPtr m_dataBuffer;
   size_t m_dataBufferSize = 0;
 
   std::unique_ptr<ArrayBufferContentsArray> m_arrayBufferContentsArray;
   std::unique_ptr<ImageBitmapContentsArray> m_imageBitmapContentsArray;
+  TransferredWasmModulesArray m_wasmModules;
+
   BlobDataHandleMap m_blobDataHandles;
 
   bool m_hasRegisteredExternalAllocation;
   bool m_transferablesNeedExternalAllocationRegistration;
 };
 
 template <>
 struct NativeValueTraits<SerializedScriptValue>
     : public NativeValueTraitsBase<SerializedScriptValue> {
   CORE_EXPORT static inline PassRefPtr<SerializedScriptValue> nativeValue(
       v8::Isolate* isolate,
       v8::Local<v8::Value> value,
       ExceptionState& exceptionState) {
     return SerializedScriptValue::serialize(
         isolate, value, SerializedScriptValue::SerializeOptions(),
         exceptionState);
   }
 };
 
 }  // namespace blink
 
 #endif  // SerializedScriptValue_h