content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.android.ahat.heapdump;
  
  public class AhatHeap implements Diffable<AhatHeap> {
    private String mName;
    private long mSize = 0;
    private int mIndex;
    private AhatHeap mBaseline;
    private boolean mIsPlaceHolder = false;
  
    AhatHeap(String name, int index) {
      mName = name;
      mIndex = index;
      mBaseline = this;
    }
  
    /**
     * Construct a place holder heap.
     */
    private AhatHeap(String name, AhatHeap baseline) {
      mName = name;
      mIndex = -1;
      mBaseline = baseline;
      baseline.setBaseline(this);
      mIsPlaceHolder = true;
    }
  
    /**
     * Construct a new place holder heap that has the given baseline heap.
     */
    static AhatHeap newPlaceHolderHeap(String name, AhatHeap baseline) {
      return new AhatHeap(name, baseline);
    }
  
    void addToSize(long increment) {
      mSize += increment;
    }
  
    /**
     * Returns a unique instance for this heap between 0 and the total number of
     * heaps in this snapshot, or -1 if this is a placeholder heap.
     */
    int getIndex() {
      return mIndex;
    }
  
    /**
     * Returns the name of this heap.
     */
    public String getName() {
      return mName;
    }
  
    /**
     * Returns the total number of bytes allocated on this heap.
     */
    public long getSize() {
      return mSize;
    }
  
    void setBaseline(AhatHeap baseline) {
      mBaseline = baseline;
    }
  
    @Override
    public AhatHeap getBaseline() {
      return mBaseline;
    }
  
    @Override
    public boolean isPlaceHolder() {
      return mIsPlaceHolder;
    }
  }
  