1 /*
2  * Copyright (C) 2008 Google Inc.
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.hit;
18 
19 import java.util.Set;
20 
21 public class RootObj extends Instance {
22     RootType mType = RootType.UNKNOWN;
23     int mIndex;
24     int mThread;
25 
26     /*
27      * These two fields are only used by roots that are static
28      * fields of class objects
29      */
30     long mParent;
31     String mComment;
32 
RootObj(RootType type)33     public RootObj(RootType type) {
34         this(type, 0, 0, null);
35     }
36 
RootObj(RootType type, long id)37     public RootObj(RootType type, long id) {
38         this(type, id, 0, null);
39     }
40 
RootObj(RootType type, long id, int thread, StackTrace stack)41     public RootObj(RootType type, long id, int thread, StackTrace stack) {
42         mType = type;
43         mId = id;
44         mThread = thread;
45         mStack = stack;
46     }
47 
getClassName(State state)48     public final String getClassName(State state) {
49         ClassObj theClass;
50 
51         if (mType == RootType.SYSTEM_CLASS) {
52             theClass = state.findClass(mId);
53         } else {
54             Instance instance = state.findReference(mId);
55 
56             theClass = state.findClass(instance.mClassId);
57         }
58 
59         if (theClass == null) {
60             return "no class defined!!";
61         }
62 
63         return theClass.mClassName;
64     }
65 
66     @Override
getSize()67     public final int getSize() {
68         Instance instance = null;
69 
70         if (mType == RootType.SYSTEM_CLASS) {
71             instance = mHeap.mState.findClass(mId);
72         } else {
73             instance = mHeap.mState.findReference(mId);
74         }
75 
76         if (instance == null) {
77             return 0;
78         }
79 
80         return instance.getSize();
81     }
82 
83     @Override
visit(Set<Instance> resultSet, Filter filter)84     public final void visit(Set<Instance> resultSet, Filter filter) {
85         if (resultSet.contains(this)) {
86             return;
87         }
88 
89         if (filter != null) {
90             if (filter.accept(this)) {
91                 resultSet.add(this);
92             }
93         } else {
94             resultSet.add(this);
95         }
96     }
97 
98     @Override
resolveReferences(State state)99     public final void resolveReferences(State state) {
100         //  Nothing to do here
101     }
102 
103     @Override
getTypeName()104     public final String getTypeName() {
105         return "root " + mType.getName();
106     }
107 
toString()108     public final String toString() {
109         return String.format("%s@0x08x", mType.getName(), mId);
110     }
111 }
112