V8 JavaScript shared memory prototype.

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index 04e77030c5033e75bc90f219af383b4a7eae6d67..a4d2b133b3522b7b2ba31b9f96924e211eab4ef7 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -2769,14 +2769,16 @@ class V8_EXPORT ArrayBuffer : public Object {
    */
   class V8_EXPORT Contents { // NOLINT
    public:
-    Contents() : data_(NULL), byte_length_(0) {}
+    Contents() : data_(NULL), byte_length_(0), shared_(false) {}
 
     void* Data() const { return data_; }
     size_t ByteLength() const { return byte_length_; }
+    bool Shared() const { return shared_; }
 
    private:
     void* data_;
     size_t byte_length_;
+    bool shared_;
 
     friend class ArrayBuffer;
   };
@@ -2802,7 +2804,7 @@ class V8_EXPORT ArrayBuffer : public Object {
    * is garbage-collected.
    */
   static Local<ArrayBuffer> New(Isolate* isolate, void* data,
-                                size_t byte_length);
+                                size_t byte_length, bool shared = false);
 
   /**
    * Returns true if ArrayBuffer is extrenalized, that is, does not