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/*
* Copyright (C) 2008 Google Inc.
*
* 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.hit;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Set;
public class ClassObj extends Instance implements Comparable<ClassObj> {
String mClassName;
long mSuperclassId;
String[] mFieldNames;
int[] mFieldTypes;
String[] mStaticFieldNames;
int[] mStaticFieldTypes;
byte[] mStaticFieldValues;
ArrayList<Instance> mInstances = new ArrayList<Instance>();
Set<ClassObj> mSubclasses = new HashSet<ClassObj>();
int mSize;
public ClassObj(long id, StackTrace stack, String className) {
mId = id;
mStack = stack;
mClassName = className;
}
@Override
public final void resolveReferences(State state) {
ByteArrayInputStream bais =
new ByteArrayInputStream(mStaticFieldValues);
DataInputStream dis = new DataInputStream(bais);
int[] types = mStaticFieldTypes;
final int N = types.length;
/*
* Spin through the list of static fields, find all object references,
* and list ourselves as a reference holder. Also add them to
* the list of root objects.
*/
try {
for (int i = 0; i < N; i++) {
int type = types[i];
int size = Types.getTypeSize(type);
if (type == Types.OBJECT) {
long id;
if (size == 4) {
id = dis.readInt();
} else {
id = dis.readLong();
}
RootObj root = new RootObj(RootType.JAVA_STATIC, id);
if (id == 0) {
root.mComment = String.format(
"Static field %s:%s null",
mClassName,
mStaticFieldNames[i]);
} else {
Instance instance = state.findReference(id);
instance.addParent(this);
root.mComment = String.format(
"Static field %s:%s %s [%s] 0x%08x",
mClassName,
mStaticFieldNames[i],
instance.getTypeName(),
instance.mHeap.mName,
id);
}
mHeap.addRoot(root);
} else {
dis.skipBytes(size);
}
}
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
}
// Lastly, add ourself as a subclass of our superclass
if (mSuperclassId != 0) {
ClassObj superclass = state.findClass(mSuperclassId);
superclass.addSubclass(this);
}
}
public final void addSubclass(ClassObj subclass) {
mSubclasses.add(subclass);
}
public final void dumpSubclasses() {
for (ClassObj subclass: mSubclasses) {
System.out.println(" " + subclass.mClassName);
}
}
public final String toString() {
return mClassName.replace('/', '.');
}
public final void addInstance(Instance instance) {
mInstances.add(instance);
}
public final void setSuperclassId(long id) {
mSuperclassId = id;
}
public final void setFieldNames(String[] names) {
mFieldNames = names;
}
public final void setFieldTypes(int[] types) {
mFieldTypes = types;
}
public final void setStaticFieldNames(String[] names) {
mStaticFieldNames = names;
}
public final void setStaticFieldTypes(int[] types) {
mStaticFieldTypes = types;
}
public final void setStaticFieldValues(byte[] values) {
mStaticFieldValues = values;
}
public final void dump() {
System.out.println("+---------- ClassObj dump for: " + mClassName);
System.out.println("+----- Static fields");
for (int i = 0; i < mStaticFieldNames.length; i++) {
System.out.println(mStaticFieldNames[i] + ": "
+ mStaticFieldTypes[i]);
}
System.out.println("+----- Instance fields");
for (int i = 0; i < mFieldNames.length; i++) {
System.out.println(mFieldNames[i] + ": " + mFieldTypes[i]);
}
}
@Override
public final String getTypeName() {
return "class " + mClassName;
}
@Override
public final void visit(Set<Instance> resultSet, Filter filter) {
if (resultSet.contains(this)) {
return;
}
if (filter != null) {
if (filter.accept(this)) {
resultSet.add(this);
}
} else {
resultSet.add(this);
}
ByteArrayInputStream bais =
new ByteArrayInputStream(mStaticFieldValues);
DataInputStream dis = new DataInputStream(bais);
int[] types = mStaticFieldTypes;
final int N = types.length;
State state = mHeap.mState;
/*
* Spin through the list of static fields, find all object references,
* and visit them.
*/
try {
for (int i = 0; i < N; i++) {
int type = types[i];
int size = Types.getTypeSize(type);
if (type == Types.OBJECT) {
long id;
if (size == 4) {
id = dis.readInt();
} else {
id = dis.readLong();
}
Instance instance = state.findReference(id);
if (instance != null) {
instance.visit(resultSet, filter);
}
} else {
dis.skipBytes(size);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
public final int compareTo(ClassObj o) {
return mClassName.compareTo(o.mClassName);
}
public final boolean equals(Object o) {
if (! (o instanceof ClassObj)) {
return false;
}
return 0 == compareTo((ClassObj) o);
}
}
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