1 /* 2 * Copyright (C) 2016 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 android.net; 18 19 import android.os.HandlerThread; 20 import android.os.Looper; 21 22 /** 23 * Shared singleton connectivity thread for the system. This is a thread for 24 * connectivity operations such as AsyncChannel connections to system services. 25 * Various connectivity manager objects can use this singleton as a common 26 * resource for their handlers instead of creating separate threads of their own. 27 * @hide 28 */ 29 public final class ConnectivityThread extends HandlerThread { 30 private static ConnectivityThread sInstance; 31 ConnectivityThread()32 private ConnectivityThread() { 33 super("ConnectivityThread"); 34 } 35 getInstance()36 private static synchronized ConnectivityThread getInstance() { 37 if (sInstance == null) { 38 sInstance = new ConnectivityThread(); 39 sInstance.start(); 40 } 41 return sInstance; 42 } 43 get()44 public static ConnectivityThread get() { 45 return getInstance(); 46 } 47 getInstanceLooper()48 public static Looper getInstanceLooper() { 49 return getInstance().getLooper(); 50 } 51 } 52