WIP SharedArrayBuffer implementation

src/runtime/runtime.h

Index: src/runtime/runtime.h
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index a051fd0276e7c7b6fb91db539266dc8ea654d9c4..7d2c52fb65deff179b580dfec81d29513ed7c255 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -616,12 +616,13 @@ namespace internal {
 
 
 #define FOR_EACH_INTRINSIC_TYPEDARRAY(F)     \
-  F(ArrayBufferInitialize, 2, 1)             \
+  F(ArrayBufferInitialize, 3, 1)             \
   F(ArrayBufferGetByteLength, 1, 1)          \
   F(ArrayBufferSliceImpl, 3, 1)              \
   F(ArrayBufferIsView, 1, 1)                 \
   F(ArrayBufferNeuter, 1, 1)                 \
-  F(TypedArrayInitialize, 5, 1)              \
+  F(ArrayBufferIsShared, 1, 1)               \
+  F(TypedArrayInitialize, 6, 1)              \
   F(TypedArrayInitializeFromArrayLike, 4, 1) \
   F(ArrayBufferViewGetByteLength, 1, 1)      \
   F(ArrayBufferViewGetByteOffset, 1, 1)      \
@@ -798,12 +799,13 @@ class Runtime : public AllStatic {
   static void SetupArrayBuffer(Isolate* isolate,
                                Handle<JSArrayBuffer> array_buffer,
                                bool is_external, void* data,
-                               size_t allocated_length);
+                               size_t allocated_length, bool is_shared = false);
 
   static bool SetupArrayBufferAllocatingData(Isolate* isolate,
                                              Handle<JSArrayBuffer> array_buffer,
                                              size_t allocated_length,
-                                             bool initialize = true);
+                                             bool initialize = true,
+                                             bool is_shared = false);
 
   static void NeuterArrayBuffer(Handle<JSArrayBuffer> array_buffer);