WIP SharedArrayBuffer implementation

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index c5b235de4c24cd7f53623efd669ff3893fc9dde0..5e65ad4f89062037e6c0f6d49fd63243dc930d95 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -174,6 +174,9 @@ enum KeyedAccessStoreMode {
 };
 
 
+enum SharedFlag { NOT_SHARED, SHARED };
+
+
 enum ContextualMode {
   NOT_CONTEXTUAL,
   CONTEXTUAL
@@ -457,6 +460,8 @@ const int kStubMinorKeyBits = kSmiValueSize - kStubMajorKeyBits - 1;
   V(JS_ARRAY_BUFFER_TYPE)                                       \
   V(JS_TYPED_ARRAY_TYPE)                                        \
   V(JS_DATA_VIEW_TYPE)                                          \
+  V(JS_SHARED_ARRAY_BUFFER_TYPE)                                \
+  V(JS_SHARED_TYPED_ARRAY_TYPE)                                 \
   V(JS_PROXY_TYPE)                                              \
   V(JS_SET_TYPE)                                                \
   V(JS_MAP_TYPE)                                                \
@@ -758,6 +763,8 @@ enum InstanceType {
   JS_ARRAY_BUFFER_TYPE,
   JS_TYPED_ARRAY_TYPE,
   JS_DATA_VIEW_TYPE,
+  JS_SHARED_ARRAY_BUFFER_TYPE,
+  JS_SHARED_TYPED_ARRAY_TYPE,
   JS_SET_TYPE,
   JS_MAP_TYPE,
   JS_SET_ITERATOR_TYPE,
@@ -10257,6 +10264,8 @@ class JSArrayBuffer: public JSObject {
   inline bool was_neutered();
   inline void set_was_neutered(bool value);
 
+  inline SharedFlag is_shared();

[jochen (gone - plz use gerrit), 2015/04/28 18:31:46]

why is that not just a bool like the other bits?

[binji, 2015/04/29 18:27:22]

Done.

+
   // [weak_next]: linked list of array buffers.
   DECL_ACCESSORS(weak_next, Object)
 
@@ -10325,6 +10334,9 @@ class JSTypedArray: public JSArrayBufferView {
   // [length]: length of typed array in elements.
   DECL_ACCESSORS(length, Object)
 
+  // [is_shared]
+  inline SharedFlag is_shared() const;
+
   DECLARE_CAST(JSTypedArray)
 
   ExternalArrayType type();