/* * Copyright (c) 2024 Huawei Device Co., Ltd. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ declare function print(arg: any): string; declare interface ArkTools { timeInUs(arg: any): number; } const REP_COUNT = 1_000_000; // Tests optimization of JSArray::CreateArrayFromList() in js_array.cpp function testOwnKeys() { const obj = {}; const arr = []; let start: number; let end: number; start = ArkTools.timeInUs(); for (let i = 0; i < REP_COUNT; i++) { Reflect.ownKeys(obj); // Triggers JSArray::CreateArrayFromList() } end = ArkTools.timeInUs(); print(`Reflect.ownKeys(obj):\t${((end - start) / 1000).toFixed(3)}\tms`); start = ArkTools.timeInUs(); for (let i = 0; i < REP_COUNT; i++) { Reflect.ownKeys(arr); // Triggers JSArray::CreateArrayFromList() } end = ArkTools.timeInUs(); print(`Reflect.ownKeys(arr):\t${((end - start) / 1000).toFixed(3)}\tms`); } testOwnKeys();