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.os.health; 18 19 import android.annotation.TestApi; 20 import android.os.Parcel; 21 import android.os.Parcelable; 22 import android.util.ArrayMap; 23 24 import java.util.Arrays; 25 import java.util.Map; 26 27 /** 28 * Class to allow sending the HealthStats through aidl generated glue. 29 * 30 * The alternative would be to send a HealthStats object, which would 31 * require constructing one, and then immediately flattening it. This 32 * saves that step at the cost of doing the extra flattening when 33 * accessed in the same process as the writer. 34 * 35 * The HealthStatsWriter passed in the constructor is retained, so don't 36 * reuse them. 37 * @hide 38 */ 39 @TestApi 40 public class HealthStatsParceler implements Parcelable { 41 private HealthStatsWriter mWriter; 42 private HealthStats mHealthStats; 43 44 public static final @android.annotation.NonNull Parcelable.Creator<HealthStatsParceler> CREATOR 45 = new Parcelable.Creator<HealthStatsParceler>() { 46 public HealthStatsParceler createFromParcel(Parcel in) { 47 return new HealthStatsParceler(in); 48 } 49 50 public HealthStatsParceler[] newArray(int size) { 51 return new HealthStatsParceler[size]; 52 } 53 }; 54 HealthStatsParceler(HealthStatsWriter writer)55 public HealthStatsParceler(HealthStatsWriter writer) { 56 mWriter = writer; 57 } 58 HealthStatsParceler(Parcel in)59 public HealthStatsParceler(Parcel in) { 60 mHealthStats = new HealthStats(in); 61 } 62 describeContents()63 public int describeContents() { 64 return 0; 65 } 66 writeToParcel(Parcel out, int flags)67 public void writeToParcel(Parcel out, int flags) { 68 // See comment on mWriter declaration above. 69 if (mWriter != null) { 70 mWriter.flattenToParcel(out); 71 } else { 72 throw new RuntimeException("Can not re-parcel HealthStatsParceler that was" 73 + " constructed from a Parcel"); 74 } 75 } 76 getHealthStats()77 public HealthStats getHealthStats() { 78 if (mWriter != null) { 79 final Parcel parcel = Parcel.obtain(); 80 mWriter.flattenToParcel(parcel); 81 parcel.setDataPosition(0); 82 mHealthStats = new HealthStats(parcel); 83 parcel.recycle(); 84 } 85 86 return mHealthStats; 87 } 88 } 89 90