Simplify, speed-up correct-context ObjectObserve calls
The original patch which ensured that Object.observe did allocations in the correct context regressed performance about 12%. This patch gets back most of that (about 11%) by simply returning the correct function which is then directly callable from JS, rather than by making the call from the runtime function. A side-effect is that their implementation is shorter. LOG=Y BUG=NONE R=verwaest@chromium.org Review URL: https://codereview.chromium.org/307543008 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21575 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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@ -368,7 +368,8 @@ function ObjectObserve(object, callback, acceptList) {
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if (ObjectIsFrozen(callback))
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throw MakeTypeError("observe_callback_frozen");
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return %ObjectObserveInObjectContext(object, callback, acceptList);
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var objectObserveFn = %GetObjectContextObjectObserve(object);
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return objectObserveFn(object, callback, acceptList);
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}
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function NativeObjectObserve(object, callback, acceptList) {
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@ -543,8 +544,8 @@ function ObjectNotifierPerformChange(changeType, changeFn) {
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if (!IS_SPEC_FUNCTION(changeFn))
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throw MakeTypeError("observe_perform_non_function");
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return %ObjectNotifierPerformChangeInObjectContext(
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objectInfo, changeType, changeFn);
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var performChangeFn = %GetObjectContextNotifierPerformChange(objectInfo);
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performChangeFn(objectInfo, changeType, changeFn);
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}
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function NativeObjectNotifierPerformChange(objectInfo, changeType, changeFn) {
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@ -571,7 +572,8 @@ function ObjectGetNotifier(object) {
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if (!%ObjectWasCreatedInCurrentOrigin(object)) return null;
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return %ObjectGetNotifierInObjectContext(object);
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var getNotifierFn = %GetObjectContextObjectGetNotifier(object);
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return getNotifierFn(object);
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}
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function NativeObjectGetNotifier(object) {
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@ -14889,64 +14889,33 @@ RUNTIME_FUNCTION(Runtime_ObjectWasCreatedInCurrentOrigin) {
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}
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RUNTIME_FUNCTION(Runtime_ObjectObserveInObjectContext) {
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HandleScope scope(isolate);
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ASSERT(args.length() == 3);
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CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
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CONVERT_ARG_HANDLE_CHECKED(JSFunction, callback, 1);
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CONVERT_ARG_HANDLE_CHECKED(Object, accept, 2);
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Handle<Context> context(object->GetCreationContext(), isolate);
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Handle<JSFunction> function(context->native_object_observe(), isolate);
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Handle<Object> call_args[] = { object, callback, accept };
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Handle<Object> result;
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ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
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isolate, result,
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Execution::Call(isolate, function,
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handle(context->object_function(), isolate),
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ARRAY_SIZE(call_args), call_args, true));
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return *result;
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}
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RUNTIME_FUNCTION(Runtime_ObjectGetNotifierInObjectContext) {
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RUNTIME_FUNCTION(Runtime_GetObjectContextObjectObserve) {
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HandleScope scope(isolate);
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ASSERT(args.length() == 1);
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CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
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Handle<Context> context(object->GetCreationContext(), isolate);
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Handle<JSFunction> function(context->native_object_get_notifier(), isolate);
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Handle<Object> call_args[] = { object };
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Handle<Object> result;
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ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
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isolate, result,
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Execution::Call(isolate, function,
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handle(context->object_function(), isolate),
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ARRAY_SIZE(call_args), call_args, true));
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return *result;
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return context->native_object_observe();
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}
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RUNTIME_FUNCTION(Runtime_ObjectNotifierPerformChangeInObjectContext) {
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RUNTIME_FUNCTION(Runtime_GetObjectContextObjectGetNotifier) {
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HandleScope scope(isolate);
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ASSERT(args.length() == 3);
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ASSERT(args.length() == 1);
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CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
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Handle<Context> context(object->GetCreationContext(), isolate);
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return context->native_object_get_notifier();
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}
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RUNTIME_FUNCTION(Runtime_GetObjectContextNotifierPerformChange) {
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HandleScope scope(isolate);
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ASSERT(args.length() == 1);
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CONVERT_ARG_HANDLE_CHECKED(JSObject, object_info, 0);
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CONVERT_ARG_HANDLE_CHECKED(String, change_type, 1);
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CONVERT_ARG_HANDLE_CHECKED(JSFunction, change_fn, 2);
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Handle<Context> context(object_info->GetCreationContext(), isolate);
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Handle<JSFunction> function(context->native_object_notifier_perform_change(),
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isolate);
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Handle<Object> call_args[] = { object_info, change_type, change_fn };
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Handle<Object> result;
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ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
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isolate, result,
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Execution::Call(isolate, function, isolate->factory()->undefined_value(),
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ARRAY_SIZE(call_args), call_args, true));
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return *result;
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return context->native_object_notifier_perform_change();
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}
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@ -306,9 +306,9 @@ namespace internal {
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F(ObservationWeakMapCreate, 0, 1) \
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F(ObserverObjectAndRecordHaveSameOrigin, 3, 1) \
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F(ObjectWasCreatedInCurrentOrigin, 1, 1) \
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F(ObjectObserveInObjectContext, 3, 1) \
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F(ObjectGetNotifierInObjectContext, 1, 1) \
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F(ObjectNotifierPerformChangeInObjectContext, 3, 1) \
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F(GetObjectContextObjectObserve, 1, 1) \
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F(GetObjectContextObjectGetNotifier, 1, 1) \
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F(GetObjectContextNotifierPerformChange, 1, 1) \
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\
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/* Harmony typed arrays */ \
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F(ArrayBufferInitialize, 2, 1)\
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@ -2,6 +2,4 @@
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// AUTO-GENERATED BY tools/generate-runtime-tests.py, DO NOT MODIFY
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// Flags: --allow-natives-syntax --harmony
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var _object_info = new Object();
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var _change_type = "foo";
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var _change_fn = function() {};
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%ObjectNotifierPerformChangeInObjectContext(_object_info, _change_type, _change_fn);
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%GetObjectContextNotifierPerformChange(_object_info);
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@ -2,6 +2,4 @@
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// AUTO-GENERATED BY tools/generate-runtime-tests.py, DO NOT MODIFY
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// Flags: --allow-natives-syntax --harmony
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var _object = new Object();
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var _callback = function() {};
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var _accept = new Object();
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%ObjectObserveInObjectContext(_object, _callback, _accept);
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%GetObjectContextObjectGetNotifier(_object);
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@ -2,4 +2,4 @@
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// AUTO-GENERATED BY tools/generate-runtime-tests.py, DO NOT MODIFY
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// Flags: --allow-natives-syntax --harmony
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var _object = new Object();
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%ObjectGetNotifierInObjectContext(_object);
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%GetObjectContextObjectObserve(_object);
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