Don't leak contexts in Object.observe

src/runtime.cc

 // 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.
 
 #include <stdlib.h>
 #include <limits>
 
 #include "v8.h"
 
 #include "accessors.h"
@@ skipping 14978 matching lines @@
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
 
   Handle<Context> creation_context(object->GetCreationContext(), isolate);
   return isolate->heap()->ToBoolean(
       ContextsHaveSameOrigin(creation_context, isolate->native_context()));
 }
 
 
+RUNTIME_FUNCTION(Runtime_NativeObjectObserve) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 3);
+  CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
+  CONVERT_ARG_HANDLE_CHECKED(Object, callback, 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, accept, 2);
+
+  Handle<Context> context(object->GetCreationContext(), isolate);
+  Handle<JSFunction> function(context->native_object_observe(), isolate);
+  Handle<Object> call_args[] = { object, callback, accept };
+  Handle<Object> result;
+
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+      isolate, result,
+      Execution::Call(isolate, function,
+          handle(context->object_function(), isolate), 3, call_args, true));
+  return *result;
+}
+
+
+RUNTIME_FUNCTION(Runtime_NativeObjectGetNotifier) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
+
+  Handle<Context> context(object->GetCreationContext(), isolate);
+  Handle<JSFunction> function(context->native_object_get_notifier(), isolate);
+  Handle<Object> call_args[] = { object };
+  Handle<Object> result;
+
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+      isolate, result,
+      Execution::Call(isolate, function,
+          handle(context->object_function(), isolate), 1, call_args, true));
+  return *result;
+}
+
+
+RUNTIME_FUNCTION(Runtime_NativeObjectNotifierPerformChange) {
+  HandleScope scope(isolate);
+  ASSERT(args.length() == 3);
+  CONVERT_ARG_HANDLE_CHECKED(JSObject, object_info, 0);
+  CONVERT_ARG_HANDLE_CHECKED(Object, change_type, 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, change_fn, 2);
+
+  Handle<Context> context(object_info->GetCreationContext(), isolate);
+  Handle<JSFunction> function(context->native_object_notifier_perform_change(),
+      isolate);
+  Handle<Object> call_args[] = { change_type, change_fn };
+  Handle<Object> result;
+
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+      isolate, result,
+      Execution::Call(isolate, function, isolate->factory()->undefined_value(),
+                      2, call_args, true));
+  return *result;
+}
+
+
 static Object* ArrayConstructorCommon(Isolate* isolate,
                                            Handle<JSFunction> constructor,
                                            Handle<AllocationSite> site,
                                            Arguments* caller_args) {
   Factory* factory = isolate->factory();
 
   bool holey = false;
   bool can_use_type_feedback = true;
   if (caller_args->length() == 1) {
     Handle<Object> argument_one = caller_args->at<Object>(0);
@@ skipping 195 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 
 } }  // namespace v8::internal