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/*
* 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;
import com.android.tools.perflib.heap.ClassObj;
import com.android.tools.perflib.heap.Field;
import com.android.tools.perflib.heap.Instance;
import java.util.AbstractList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
public class AhatClassObj extends AhatInstance {
private String mClassName;
private AhatClassObj mSuperClassObj;
private AhatInstance mClassLoader;
private FieldValue[] mStaticFieldValues;
public AhatClassObj(long id) {
super(id);
}
@Override void initialize(AhatSnapshot snapshot, Instance inst, Site site) {
super.initialize(snapshot, inst, site);
ClassObj classObj = (ClassObj)inst;
mClassName = classObj.getClassName();
ClassObj superClassObj = classObj.getSuperClassObj();
if (superClassObj != null) {
mSuperClassObj = snapshot.findClassObj(superClassObj.getId());
}
Instance loader = classObj.getClassLoader();
if (loader != null) {
mClassLoader = snapshot.findInstance(loader.getId());
}
Collection<Map.Entry<Field, Object>> fieldValues = classObj.getStaticFieldValues().entrySet();
mStaticFieldValues = new FieldValue[fieldValues.size()];
int index = 0;
for (Map.Entry<Field, Object> field : fieldValues) {
String name = field.getKey().getName();
String type = field.getKey().getType().toString();
Value value = snapshot.getValue(field.getValue());
mStaticFieldValues[index++] = new FieldValue(name, type, value);
}
}
/**
* Returns the name of the class this is a class object for.
*/
public String getName() {
return mClassName;
}
/**
* Returns the superclass of this class object.
*/
public AhatClassObj getSuperClassObj() {
return mSuperClassObj;
}
/**
* Returns the class loader of this class object.
*/
public AhatInstance getClassLoader() {
return mClassLoader;
}
/**
* Returns the static field values for this class object.
*/
public List<FieldValue> getStaticFieldValues() {
return Arrays.asList(mStaticFieldValues);
}
@Override
ReferenceIterator getReferences() {
List<Reference> refs = new AbstractList<Reference>() {
@Override
public int size() {
return mStaticFieldValues.length;
}
@Override
public Reference get(int index) {
FieldValue field = mStaticFieldValues[index];
Value value = field.value;
if (value != null && value.isAhatInstance()) {
return new Reference(AhatClassObj.this, "." + field.name, value.asAhatInstance(), true);
}
return null;
}
};
return new ReferenceIterator(refs);
}
@Override public boolean isClassObj() {
return true;
}
@Override public AhatClassObj asClassObj() {
return this;
}
@Override public String toString() {
return "class " + mClassName;
}
@Override AhatInstance newPlaceHolderInstance() {
return new AhatPlaceHolderClassObj(this);
}
}
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