WIP SharedArrayBuffer implementation

src/d8.cc

Index: src/d8.cc
diff --git a/src/d8.cc b/src/d8.cc
index 7a300efe0ee621f79b4621a903913b0d9149449a..a5ac840435ff027b73f72a0b3d77c798d63ce9b8 100644
--- a/src/d8.cc
+++ b/src/d8.cc
@@ -229,6 +229,7 @@ ScriptCompiler::CachedData* CompileForCachedData(
   ShellArrayBufferAllocator allocator;
   Isolate::CreateParams create_params;
   create_params.array_buffer_allocator = &allocator;
+  create_params.shared_array_buffer_allocator = &allocator;
   Isolate* temp_isolate = Isolate::New(create_params);
   ScriptCompiler::CachedData* result = NULL;
   {
@@ -1324,6 +1325,7 @@ void SourceGroup::ExecuteInThread() {
   ShellArrayBufferAllocator allocator;
   Isolate::CreateParams create_params;
   create_params.array_buffer_allocator = &allocator;
+  create_params.shared_array_buffer_allocator = &allocator;
   Isolate* isolate = Isolate::New(create_params);
   do {
     next_semaphore_.Wait();
@@ -1655,8 +1657,10 @@ int Shell::Main(int argc, char* argv[]) {
   MockArrayBufferAllocator mock_arraybuffer_allocator;
   if (options.mock_arraybuffer_allocator) {
     create_params.array_buffer_allocator = &mock_arraybuffer_allocator;
+    create_params.shared_array_buffer_allocator = &mock_arraybuffer_allocator;
   } else {
     create_params.array_buffer_allocator = &array_buffer_allocator;
+    create_params.shared_array_buffer_allocator = &array_buffer_allocator;
   }
 #if !defined(V8_SHARED) && defined(ENABLE_GDB_JIT_INTERFACE)
   if (i::FLAG_gdbjit) {