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 com.android.ahat.heapdump; 18 19 public class AhatHeap implements Diffable<AhatHeap> { 20 private String mName; 21 private long mSize = 0; 22 private int mIndex; 23 private AhatHeap mBaseline; 24 private boolean mIsPlaceHolder = false; 25 26 AhatHeap(String name, int index) { 27 mName = name; 28 mIndex = index; 29 mBaseline = this; 30 } 31 32 /** 33 * Construct a place holder heap. 34 */ 35 private AhatHeap(String name, AhatHeap baseline) { 36 mName = name; 37 mIndex = -1; 38 mBaseline = baseline; 39 baseline.setBaseline(this); 40 mIsPlaceHolder = true; 41 } 42 43 /** 44 * Construct a new place holder heap that has the given baseline heap. 45 */ 46 static AhatHeap newPlaceHolderHeap(String name, AhatHeap baseline) { 47 return new AhatHeap(name, baseline); 48 } 49 50 void addToSize(long increment) { 51 mSize += increment; 52 } 53 54 /** 55 * Returns a unique instance for this heap between 0 and the total number of 56 * heaps in this snapshot, or -1 if this is a placeholder heap. 57 */ 58 int getIndex() { 59 return mIndex; 60 } 61 62 /** 63 * Returns the name of this heap. 64 */ 65 public String getName() { 66 return mName; 67 } 68 69 /** 70 * Returns the total number of bytes allocated on this heap. 71 */ 72 public long getSize() { 73 return mSize; 74 } 75 76 void setBaseline(AhatHeap baseline) { 77 mBaseline = baseline; 78 } 79 80 @Override 81 public AhatHeap getBaseline() { 82 return mBaseline; 83 } 84 85 @Override 86 public boolean isPlaceHolder() { 87 return mIsPlaceHolder; 88 } 89 } 90
