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/*
* Copyright (C) 2015 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;
import com.android.tools.perflib.heap.ArrayInstance;
import com.android.tools.perflib.heap.ClassInstance;
import com.android.tools.perflib.heap.ClassObj;
import com.android.tools.perflib.heap.Field;
import com.android.tools.perflib.heap.Heap;
import com.android.tools.perflib.heap.Instance;
import com.android.tools.perflib.heap.RootObj;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
class ObjectHandler extends AhatHandler {
public ObjectHandler(AhatSnapshot snapshot) {
super(snapshot);
}
@Override
public void handle(Doc doc, Query query) throws IOException {
long id = query.getLong("id", 0);
Instance inst = mSnapshot.findInstance(id);
if (inst == null) {
doc.println(DocString.format("No object with id %08xl", id));
return;
}
doc.title("Object %08x", inst.getUniqueId());
doc.big(Value.render(inst));
printAllocationSite(doc, inst);
printDominatorPath(doc, inst);
doc.section("Object Info");
ClassObj cls = inst.getClassObj();
doc.descriptions();
doc.description(DocString.text("Class"), Value.render(cls));
doc.description(DocString.text("Size"), DocString.format("%d", inst.getSize()));
doc.description(
DocString.text("Retained Size"),
DocString.format("%d", inst.getTotalRetainedSize()));
doc.description(DocString.text("Heap"), DocString.text(inst.getHeap().getName()));
doc.end();
printBitmap(doc, inst);
if (inst instanceof ClassInstance) {
printClassInstanceFields(doc, (ClassInstance)inst);
} else if (inst instanceof ArrayInstance) {
printArrayElements(doc, (ArrayInstance)inst);
} else if (inst instanceof ClassObj) {
printClassInfo(doc, (ClassObj)inst);
}
printReferences(doc, inst);
printDominatedObjects(doc, query, inst);
}
private static void printClassInstanceFields(Doc doc, ClassInstance inst) {
doc.section("Fields");
doc.table(new Column("Type"), new Column("Name"), new Column("Value"));
for (ClassInstance.FieldValue field : inst.getValues()) {
doc.row(
DocString.text(field.getField().getType().toString()),
DocString.text(field.getField().getName()),
Value.render(field.getValue()));
}
doc.end();
}
private static void printArrayElements(Doc doc, ArrayInstance array) {
doc.section("Array Elements");
doc.table(new Column("Index", Column.Align.RIGHT), new Column("Value"));
Object[] elements = array.getValues();
for (int i = 0; i < elements.length; i++) {
doc.row(DocString.format("%d", i), Value.render(elements[i]));
}
doc.end();
}
private static void printClassInfo(Doc doc, ClassObj clsobj) {
doc.section("Class Info");
doc.descriptions();
doc.description(DocString.text("Super Class"), Value.render(clsobj.getSuperClassObj()));
doc.description(DocString.text("Class Loader"), Value.render(clsobj.getClassLoader()));
doc.end();
doc.section("Static Fields");
doc.table(new Column("Type"), new Column("Name"), new Column("Value"));
for (Map.Entry<Field, Object> field : clsobj.getStaticFieldValues().entrySet()) {
doc.row(
DocString.text(field.getKey().getType().toString()),
DocString.text(field.getKey().getName()),
Value.render(field.getValue()));
}
doc.end();
}
private static void printReferences(Doc doc, Instance inst) {
doc.section("Objects with References to this Object");
if (inst.getHardReferences().isEmpty()) {
doc.println(DocString.text("(none)"));
} else {
doc.table(new Column("Object"));
for (Instance ref : inst.getHardReferences()) {
doc.row(Value.render(ref));
}
doc.end();
}
if (inst.getSoftReferences() != null) {
doc.section("Objects with Soft References to this Object");
doc.table(new Column("Object"));
for (Instance ref : inst.getSoftReferences()) {
doc.row(Value.render(inst));
}
doc.end();
}
}
private void printAllocationSite(Doc doc, Instance inst) {
doc.section("Allocation Site");
Site site = mSnapshot.getSiteForInstance(inst);
SitePrinter.printSite(doc, mSnapshot, site);
}
// Draw the bitmap corresponding to this instance if there is one.
private static void printBitmap(Doc doc, Instance inst) {
Instance bitmap = InstanceUtils.getAssociatedBitmapInstance(inst);
if (bitmap != null) {
doc.section("Bitmap Image");
doc.println(DocString.image(
DocString.formattedUri("bitmap?id=%d", bitmap.getId()), "bitmap image"));
}
}
private void printDominatorPath(Doc doc, Instance inst) {
doc.section("Dominator Path from Root");
List<Instance> path = new ArrayList<Instance>();
for (Instance parent = inst;
parent != null && !(parent instanceof RootObj);
parent = parent.getImmediateDominator()) {
path.add(parent);
}
// Add 'null' as a marker for the root.
path.add(null);
Collections.reverse(path);
HeapTable.TableConfig<Instance> table = new HeapTable.TableConfig<Instance>() {
public String getHeapsDescription() {
return "Bytes Retained by Heap";
}
public long getSize(Instance element, Heap heap) {
if (element == null) {
return mSnapshot.getHeapSize(heap);
}
int index = mSnapshot.getHeapIndex(heap);
return element.getRetainedSize(index);
}
public List<HeapTable.ValueConfig<Instance>> getValueConfigs() {
HeapTable.ValueConfig<Instance> value = new HeapTable.ValueConfig<Instance>() {
public String getDescription() {
return "Object";
}
public DocString render(Instance element) {
if (element == null) {
return DocString.link(DocString.uri("roots"), DocString.text("ROOT"));
} else {
return DocString.text("→ ").append(Value.render(element));
}
}
};
return Collections.singletonList(value);
}
};
HeapTable.render(doc, table, mSnapshot, path);
}
public void printDominatedObjects(Doc doc, Query query, Instance inst) {
doc.section("Immediately Dominated Objects");
List<Instance> instances = mSnapshot.getDominated(inst);
if (instances != null) {
DominatedList.render(mSnapshot, doc, instances, query);
} else {
doc.println(DocString.text("(none)"));
}
}
}
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