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 import com.android.tools.perflib.heap.ClassObj; 20 import com.android.tools.perflib.heap.Field; 21 import com.android.tools.perflib.heap.Instance; 22 import java.util.Arrays; 23 import java.util.Collection; 24 import java.util.List; 25 import java.util.Map; 26 27 public class AhatClassObj extends AhatInstance { 28 private String mClassName; 29 private AhatClassObj mSuperClassObj; 30 private AhatInstance mClassLoader; 31 private FieldValue[] mStaticFieldValues; 32 AhatClassObj(long id)33 public AhatClassObj(long id) { 34 super(id); 35 } 36 initialize(AhatSnapshot snapshot, Instance inst)37 @Override void initialize(AhatSnapshot snapshot, Instance inst) { 38 super.initialize(snapshot, inst); 39 40 ClassObj classObj = (ClassObj)inst; 41 mClassName = classObj.getClassName(); 42 43 ClassObj superClassObj = classObj.getSuperClassObj(); 44 if (superClassObj != null) { 45 mSuperClassObj = snapshot.findClassObj(superClassObj.getId()); 46 } 47 48 Instance loader = classObj.getClassLoader(); 49 if (loader != null) { 50 mClassLoader = snapshot.findInstance(loader.getId()); 51 } 52 53 Collection<Map.Entry<Field, Object>> fieldValues = classObj.getStaticFieldValues().entrySet(); 54 mStaticFieldValues = new FieldValue[fieldValues.size()]; 55 int index = 0; 56 for (Map.Entry<Field, Object> field : fieldValues) { 57 String name = field.getKey().getName(); 58 String type = field.getKey().getType().toString(); 59 Value value = snapshot.getValue(field.getValue()); 60 mStaticFieldValues[index++] = new FieldValue(name, type, value); 61 62 if (field.getValue() instanceof Instance) { 63 Instance ref = (Instance)field.getValue(); 64 if (ref.getNextInstanceToGcRoot() == inst) { 65 value.asAhatInstance().setNextInstanceToGcRoot(this, "." + name); 66 } 67 } 68 } 69 } 70 71 /** 72 * Returns the name of the class this is a class object for. 73 */ getName()74 public String getName() { 75 return mClassName; 76 } 77 78 /** 79 * Returns the superclass of this class object. 80 */ getSuperClassObj()81 public AhatClassObj getSuperClassObj() { 82 return mSuperClassObj; 83 } 84 85 /** 86 * Returns the class loader of this class object. 87 */ getClassLoader()88 public AhatInstance getClassLoader() { 89 return mClassLoader; 90 } 91 92 /** 93 * Returns the static field values for this class object. 94 */ getStaticFieldValues()95 public List<FieldValue> getStaticFieldValues() { 96 return Arrays.asList(mStaticFieldValues); 97 } 98 isClassObj()99 @Override public boolean isClassObj() { 100 return true; 101 } 102 asClassObj()103 @Override public AhatClassObj asClassObj() { 104 return this; 105 } 106 toString()107 @Override public String toString() { 108 return mClassName; 109 } 110 newPlaceHolderInstance()111 @Override AhatInstance newPlaceHolderInstance() { 112 return new AhatPlaceHolderClassObj(this); 113 } 114 } 115 116