1 /* 2 * Copyright (C) 2017 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.backup.restore; 18 19 import java.util.concurrent.atomic.AtomicBoolean; 20 import java.util.concurrent.atomic.AtomicInteger; 21 22 /** 23 * Restore infrastructure. 24 */ 25 public abstract class RestoreEngine { 26 27 private static final String TAG = "RestoreEngine"; 28 29 public static final int SUCCESS = 0; 30 public static final int TARGET_FAILURE = -2; 31 public static final int TRANSPORT_FAILURE = -3; 32 33 private final AtomicBoolean mRunning = new AtomicBoolean(false); 34 private final AtomicInteger mResult = new AtomicInteger(SUCCESS); 35 36 public boolean isRunning() { 37 return mRunning.get(); 38 } 39 40 public void setRunning(boolean stillRunning) { 41 synchronized (mRunning) { 42 mRunning.set(stillRunning); 43 mRunning.notifyAll(); 44 } 45 } 46 47 public int waitForResult() { 48 synchronized (mRunning) { 49 while (isRunning()) { 50 try { 51 mRunning.wait(); 52 } catch (InterruptedException e) { 53 } 54 } 55 } 56 return getResult(); 57 } 58 59 public int getResult() { 60 return mResult.get(); 61 } 62 63 public void setResult(int result) { 64 mResult.set(result); 65 } 66 67 // TODO: abstract restore state and APIs 68 } 69
