1 /* 2 * Copyright (C) 2021 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 17 package com.android.server.connectivity.mdns; 18 19 import android.util.ArraySet; 20 21 import java.util.Set; 22 import java.util.concurrent.ScheduledExecutorService; 23 import java.util.concurrent.ScheduledThreadPoolExecutor; 24 25 /** 26 * This class provides {@link ScheduledExecutorService} instances to {@link MdnsServiceTypeClient} 27 * instances, and provides method to shutdown all the created executors. 28 */ 29 public class ExecutorProvider { 30 31 private final Set<ScheduledExecutorService> serviceTypeClientSchedulerExecutors = 32 new ArraySet<>(); 33 34 /** Returns a new {@link ScheduledExecutorService} instance. */ newServiceTypeClientSchedulerExecutor()35 public ScheduledExecutorService newServiceTypeClientSchedulerExecutor() { 36 // TODO: actually use a pool ? 37 ScheduledExecutorService executor = new ScheduledThreadPoolExecutor(1); 38 serviceTypeClientSchedulerExecutors.add(executor); 39 return executor; 40 } 41 42 /** Shuts down all the created {@link ScheduledExecutorService} instances. */ shutdownAll()43 public void shutdownAll() { 44 for (ScheduledExecutorService executor : serviceTypeClientSchedulerExecutors) { 45 executor.shutdownNow(); 46 } 47 } 48 }