1/* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17import {globalConfig} from 'common/global_config'; 18import {UrlUtils} from 'common/url_utils'; 19import { 20 initWasm, 21 resetEngineWorker, 22 WasmEngineProxy, 23} from 'trace_processor/wasm_engine_proxy'; 24 25export class TraceProcessorFactory { 26 private static wasmEngine?: WasmEngineProxy; 27 28 static async getSingleInstance(): Promise<WasmEngineProxy> { 29 if (!TraceProcessorFactory.wasmEngine) { 30 const traceProcessorRootUrl = 31 globalConfig.MODE === 'KARMA_TEST' 32 ? UrlUtils.getRootUrl() + 33 'base/deps_build/trace_processor/to_be_served/' 34 : UrlUtils.getRootUrl(); 35 initWasm(traceProcessorRootUrl); 36 const engineId = 'random-id'; 37 const enginePort = resetEngineWorker(); 38 TraceProcessorFactory.wasmEngine = new WasmEngineProxy(engineId, enginePort); 39 } 40 41 return TraceProcessorFactory.wasmEngine; 42 } 43} 44