WIP SharedArrayBuffer implementation

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 156 matching lines @@
   STORE_AND_GROW_TRANSITION_SMI_TO_DOUBLE,
   STORE_AND_GROW_TRANSITION_DOUBLE_TO_OBJECT,
   STORE_AND_GROW_TRANSITION_HOLEY_SMI_TO_OBJECT,
   STORE_AND_GROW_TRANSITION_HOLEY_SMI_TO_DOUBLE,
   STORE_AND_GROW_TRANSITION_HOLEY_DOUBLE_TO_OBJECT,
   STORE_NO_TRANSITION_IGNORE_OUT_OF_BOUNDS,
   STORE_NO_TRANSITION_HANDLE_COW
 };
 
 
+enum SharedFlag { NOT_SHARED, SHARED };
+
+
 enum ContextualMode {
   NOT_CONTEXTUAL,
   CONTEXTUAL
 };
 
 
 enum MutableMode {
   MUTABLE,
   IMMUTABLE
 };
@@ skipping 263 matching lines @@
   V(JS_CONTEXT_EXTENSION_OBJECT_TYPE)                           \
   V(JS_GENERATOR_OBJECT_TYPE)                                   \
   V(JS_MODULE_TYPE)                                             \
   V(JS_GLOBAL_OBJECT_TYPE)                                      \
   V(JS_BUILTINS_OBJECT_TYPE)                                    \
   V(JS_GLOBAL_PROXY_TYPE)                                       \
   V(JS_ARRAY_TYPE)                                              \
   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)                                                \
   V(JS_SET_ITERATOR_TYPE)                                       \
   V(JS_MAP_ITERATOR_TYPE)                                       \
   V(JS_WEAK_MAP_TYPE)                                           \
   V(JS_WEAK_SET_TYPE)                                           \
   V(JS_REGEXP_TYPE)                                             \
                                                                 \
   V(JS_FUNCTION_TYPE)                                           \
@@ skipping 281 matching lines @@
   JS_CONTEXT_EXTENSION_OBJECT_TYPE,
   JS_GENERATOR_OBJECT_TYPE,
   JS_MODULE_TYPE,
   JS_GLOBAL_OBJECT_TYPE,
   JS_BUILTINS_OBJECT_TYPE,
   JS_GLOBAL_PROXY_TYPE,
   JS_ARRAY_TYPE,
   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,
   JS_MAP_ITERATOR_TYPE,
   JS_WEAK_MAP_TYPE,
   JS_WEAK_SET_TYPE,
   JS_REGEXP_TYPE,
   JS_FUNCTION_TYPE,  // LAST_JS_OBJECT_TYPE, LAST_JS_RECEIVER_TYPE
 
   // Pseudo-types
@@ skipping 9479 matching lines @@
 
   inline bool should_be_freed();
   inline void set_should_be_freed(bool value);
 
   inline bool is_neuterable();
   inline void set_is_neuterable(bool value);
 
   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)
 
   DECLARE_CAST(JSArrayBuffer)
 
   void Neuter();
 
   // Dispatched behavior.
   DECLARE_PRINTER(JSArrayBuffer)
   DECLARE_VERIFIER(JSArrayBuffer)
@@ skipping 48 matching lines @@
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSArrayBufferView);
 };
 
 
 class JSTypedArray: public JSArrayBufferView {
  public:
   // [length]: length of typed array in elements.
   DECL_ACCESSORS(length, Object)
 
+  // [is_shared]
+  inline SharedFlag is_shared() const;
+
   DECLARE_CAST(JSTypedArray)
 
   ExternalArrayType type();
   size_t element_size();
 
   Handle<JSArrayBuffer> GetBuffer();
 
   // Dispatched behavior.
   DECLARE_PRINTER(JSTypedArray)
   DECLARE_VERIFIER(JSTypedArray)
@@ skipping 765 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_