tools/ahat/src/ObjectHandler.java - platform/art - Git at Google

 /*
  * 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.ahat.heapdump.AhatArrayInstance;
 import com.android.ahat.heapdump.AhatClassInstance;
 import com.android.ahat.heapdump.AhatClassObj;
 import com.android.ahat.heapdump.AhatInstance;
 import com.android.ahat.heapdump.AhatSnapshot;
 import com.android.ahat.heapdump.Diff;
 import com.android.ahat.heapdump.FieldValue;
 import com.android.ahat.heapdump.PathElement;
 import com.android.ahat.heapdump.Site;
 import com.android.ahat.heapdump.Value;
 import java.io.IOException;
 import java.util.Collection;
 import java.util.List;
 import java.util.Objects;


 class ObjectHandler implements AhatHandler {

   private static final String ARRAY_ELEMENTS_ID = "elements";
   private static final String DOMINATOR_PATH_ID = "dompath";
   private static final String ALLOCATION_SITE_ID = "frames";
   private static final String DOMINATED_OBJECTS_ID = "dominated";
   private static final String INSTANCE_FIELDS_ID = "ifields";
   private static final String STATIC_FIELDS_ID = "sfields";
   private static final String HARD_REFS_ID = "refs";
   private static final String SOFT_REFS_ID = "srefs";

   private AhatSnapshot mSnapshot;

   public ObjectHandler(AhatSnapshot snapshot) {
     mSnapshot = snapshot;
   }

   @Override
   public void handle(Doc doc, Query query) throws IOException {
     long id = query.getLong("id", 0);
     AhatInstance inst = mSnapshot.findInstance(id);
     if (inst == null) {
       doc.println(DocString.format("No object with id %08xl", id));
       return;
     }
     AhatInstance base = inst.getBaseline();

     doc.title("Object %08x", inst.getId());
     doc.big(Summarizer.summarize(inst));

     printAllocationSite(doc, query, inst);
     printGcRootPath(doc, query, inst);

     doc.section("Object Info");
     AhatClassObj cls = inst.getClassObj();
     doc.descriptions();
     doc.description(DocString.text("Class"), Summarizer.summarize(cls));

     DocString sizeDescription = DocString.format("%,14d ", inst.getSize());
     sizeDescription.appendDelta(false, base.isPlaceHolder(),
         inst.getSize(), base.getSize());
     doc.description(DocString.text("Size"), sizeDescription);

     DocString rsizeDescription = DocString.format("%,14d ", inst.getTotalRetainedSize());
     rsizeDescription.appendDelta(false, base.isPlaceHolder(),
         inst.getTotalRetainedSize(), base.getTotalRetainedSize());
     doc.description(DocString.text("Retained Size"), rsizeDescription);

     doc.description(DocString.text("Heap"), DocString.text(inst.getHeap().getName()));

     Collection<String> rootTypes = inst.getRootTypes();
     if (rootTypes != null) {
       DocString types = new DocString();
       String comma = "";
       for (String type : rootTypes) {
         types.append(comma);
         types.append(type);
         comma = ", ";
       }
       doc.description(DocString.text("Root Types"), types);
     }

     doc.end();

     printBitmap(doc, inst);
     if (inst.isClassInstance()) {
       printClassInstanceFields(doc, query, inst.asClassInstance());
     } else if (inst.isArrayInstance()) {
       printArrayElements(doc, query, inst.asArrayInstance());
     } else if (inst.isClassObj()) {
       printClassInfo(doc, query, inst.asClassObj());
     }
     printReferences(doc, query, inst);
     printDominatedObjects(doc, query, inst);
   }

   private static void printClassInstanceFields(Doc doc, Query query, AhatClassInstance inst) {
     doc.section("Fields");
     AhatInstance base = inst.getBaseline();
     List<FieldValue> fields = inst.getInstanceFields();
     if (!base.isPlaceHolder()) {
       Diff.fields(fields, base.asClassInstance().getInstanceFields());
     }
     SubsetSelector<FieldValue> selector = new SubsetSelector(query, INSTANCE_FIELDS_ID, fields);
     printFields(doc, inst != base && !base.isPlaceHolder(), selector.selected());
     selector.render(doc);
   }

   private static void printArrayElements(Doc doc, Query query, AhatArrayInstance array) {
     doc.section("Array Elements");
     AhatInstance base = array.getBaseline();
     boolean diff = array.getBaseline() != array && !base.isPlaceHolder();
     doc.table(
         new Column("Index", Column.Align.RIGHT),
         new Column("Value"),
         new Column("Δ", Column.Align.LEFT, diff));

     List<Value> elements = array.getValues();
     SubsetSelector<Value> selector = new SubsetSelector(query, ARRAY_ELEMENTS_ID, elements);
     int i = 0;
     for (Value current : selector.selected()) {
       DocString delta = new DocString();
       if (diff) {
         Value previous = Value.getBaseline(base.asArrayInstance().getValue(i));
         if (!Objects.equals(current, previous)) {
           delta.append("was ");
           delta.append(Summarizer.summarize(previous));
         }
       }
       doc.row(DocString.format("%d", i), Summarizer.summarize(current), delta);
       i++;
     }
     doc.end();
     selector.render(doc);
   }

   private static void printFields(Doc doc, boolean diff, List<FieldValue> fields) {
     doc.table(
         new Column("Type"),
         new Column("Name"),
         new Column("Value"),
         new Column("Δ", Column.Align.LEFT, diff));

     for (FieldValue field : fields) {
       Value current = field.getValue();
       DocString value;
       if (field.isPlaceHolder()) {
         value = DocString.removed("del");
       } else {
         value = Summarizer.summarize(current);
       }

       DocString delta = new DocString();
       FieldValue basefield = field.getBaseline();
       if (basefield.isPlaceHolder()) {
         delta.append(DocString.added("new"));
       } else {
         Value previous = Value.getBaseline(basefield.getValue());
         if (!Objects.equals(current, previous)) {
           delta.append("was ");
           delta.append(Summarizer.summarize(previous));
         }
       }
       doc.row(DocString.text(field.getType()), DocString.text(field.getName()), value, delta);
     }
     doc.end();
   }

   private static void printClassInfo(Doc doc, Query query, AhatClassObj clsobj) {
     doc.section("Class Info");
     doc.descriptions();
     doc.description(DocString.text("Super Class"),
         Summarizer.summarize(clsobj.getSuperClassObj()));
     doc.description(DocString.text("Class Loader"),
         Summarizer.summarize(clsobj.getClassLoader()));
     doc.end();

     doc.section("Static Fields");
     AhatInstance base = clsobj.getBaseline();
     List<FieldValue> fields = clsobj.getStaticFieldValues();
     if (!base.isPlaceHolder()) {
       Diff.fields(fields, base.asClassObj().getStaticFieldValues());
     }
     SubsetSelector<FieldValue> selector = new SubsetSelector(query, STATIC_FIELDS_ID, fields);
     printFields(doc, clsobj != base && !base.isPlaceHolder(), selector.selected());
     selector.render(doc);
   }

   private static void printReferences(Doc doc, Query query, AhatInstance inst) {
     doc.section("Objects with References to this Object");
     if (inst.getHardReverseReferences().isEmpty()) {
       doc.println(DocString.text("(none)"));
     } else {
       doc.table(new Column("Object"));
       List<AhatInstance> references = inst.getHardReverseReferences();
       SubsetSelector<AhatInstance> selector = new SubsetSelector(query, HARD_REFS_ID, references);
       for (AhatInstance ref : selector.selected()) {
         doc.row(Summarizer.summarize(ref));
       }
       doc.end();
       selector.render(doc);
     }

     if (!inst.getSoftReverseReferences().isEmpty()) {
       doc.section("Objects with Soft References to this Object");
       doc.table(new Column("Object"));
       List<AhatInstance> references = inst.getSoftReverseReferences();
       SubsetSelector<AhatInstance> selector = new SubsetSelector(query, SOFT_REFS_ID, references);
       for (AhatInstance ref : selector.selected()) {
         doc.row(Summarizer.summarize(ref));
       }
       doc.end();
       selector.render(doc);
     }
   }

   private void printAllocationSite(Doc doc, Query query, AhatInstance inst) {
     doc.section("Allocation Site");
     Site site = inst.getSite();
     SitePrinter.printSite(mSnapshot, doc, query, ALLOCATION_SITE_ID, site);
   }

   // Draw the bitmap corresponding to this instance if there is one.
   private static void printBitmap(Doc doc, AhatInstance inst) {
     AhatInstance bitmap = inst.getAssociatedBitmapInstance();
     if (bitmap != null) {
       doc.section("Bitmap Image");
       doc.println(DocString.image(
             DocString.formattedUri("bitmap?id=%d", bitmap.getId()), "bitmap image"));
     }
   }

   private void printGcRootPath(Doc doc, Query query, AhatInstance inst) {
     doc.section("Sample Path from GC Root");
     List<PathElement> path = inst.getPathFromGcRoot();
     doc.table(new Column(""), new Column("Path Element"));
     doc.row(DocString.text("(rooted)"),
         DocString.link(DocString.uri("root"), DocString.text("ROOT")));
     for (PathElement element : path) {
       DocString label = DocString.text("→ ");
       label.append(Summarizer.summarize(element.instance));
       label.append(element.field);
       doc.row(DocString.text(element.isDominator ? "(dominator)" : ""), label);
     };
     doc.end();
   }

   public void printDominatedObjects(Doc doc, Query query, AhatInstance inst) {
     doc.section("Immediately Dominated Objects");
     List<AhatInstance> instances = inst.getDominated();
     if (instances != null) {
       DominatedList.render(mSnapshot, doc, query, DOMINATED_OBJECTS_ID, instances);
     } else {
       doc.println(DocString.text("(none)"));
     }
   }
 }
	/*
	* 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.ahat.heapdump.AhatArrayInstance;
	import com.android.ahat.heapdump.AhatClassInstance;
	import com.android.ahat.heapdump.AhatClassObj;
	import com.android.ahat.heapdump.AhatInstance;
	import com.android.ahat.heapdump.AhatSnapshot;
	import com.android.ahat.heapdump.Diff;
	import com.android.ahat.heapdump.FieldValue;
	import com.android.ahat.heapdump.PathElement;
	import com.android.ahat.heapdump.Site;
	import com.android.ahat.heapdump.Value;
	import java.io.IOException;
	import java.util.Collection;
	import java.util.List;
	import java.util.Objects;


	class ObjectHandler implements AhatHandler {

	private static final String ARRAY_ELEMENTS_ID = "elements";
	private static final String DOMINATOR_PATH_ID = "dompath";
	private static final String ALLOCATION_SITE_ID = "frames";
	private static final String DOMINATED_OBJECTS_ID = "dominated";
	private static final String INSTANCE_FIELDS_ID = "ifields";
	private static final String STATIC_FIELDS_ID = "sfields";
	private static final String HARD_REFS_ID = "refs";
	private static final String SOFT_REFS_ID = "srefs";

	private AhatSnapshot mSnapshot;

	public ObjectHandler(AhatSnapshot snapshot) {
	mSnapshot = snapshot;
	}

	@Override
	public void handle(Doc doc, Query query) throws IOException {
	long id = query.getLong("id", 0);
	AhatInstance inst = mSnapshot.findInstance(id);
	if (inst == null) {
	doc.println(DocString.format("No object with id %08xl", id));
	return;
	}
	AhatInstance base = inst.getBaseline();

	doc.title("Object %08x", inst.getId());
	doc.big(Summarizer.summarize(inst));

	printAllocationSite(doc, query, inst);
	printGcRootPath(doc, query, inst);

	doc.section("Object Info");
	AhatClassObj cls = inst.getClassObj();
	doc.descriptions();
	doc.description(DocString.text("Class"), Summarizer.summarize(cls));

	DocString sizeDescription = DocString.format("%,14d ", inst.getSize());
	sizeDescription.appendDelta(false, base.isPlaceHolder(),
	inst.getSize(), base.getSize());
	doc.description(DocString.text("Size"), sizeDescription);

	DocString rsizeDescription = DocString.format("%,14d ", inst.getTotalRetainedSize());
	rsizeDescription.appendDelta(false, base.isPlaceHolder(),
	inst.getTotalRetainedSize(), base.getTotalRetainedSize());
	doc.description(DocString.text("Retained Size"), rsizeDescription);

	doc.description(DocString.text("Heap"), DocString.text(inst.getHeap().getName()));

	Collection<String> rootTypes = inst.getRootTypes();
	if (rootTypes != null) {
	DocString types = new DocString();
	String comma = "";
	for (String type : rootTypes) {
	types.append(comma);
	types.append(type);
	comma = ", ";
	}
	doc.description(DocString.text("Root Types"), types);
	}

	doc.end();

	printBitmap(doc, inst);
	if (inst.isClassInstance()) {
	printClassInstanceFields(doc, query, inst.asClassInstance());
	} else if (inst.isArrayInstance()) {
	printArrayElements(doc, query, inst.asArrayInstance());
	} else if (inst.isClassObj()) {
	printClassInfo(doc, query, inst.asClassObj());
	}
	printReferences(doc, query, inst);
	printDominatedObjects(doc, query, inst);
	}

	private static void printClassInstanceFields(Doc doc, Query query, AhatClassInstance inst) {
	doc.section("Fields");
	AhatInstance base = inst.getBaseline();
	List<FieldValue> fields = inst.getInstanceFields();
	if (!base.isPlaceHolder()) {
	Diff.fields(fields, base.asClassInstance().getInstanceFields());
	}
	SubsetSelector<FieldValue> selector = new SubsetSelector(query, INSTANCE_FIELDS_ID, fields);
	printFields(doc, inst != base && !base.isPlaceHolder(), selector.selected());
	selector.render(doc);
	}

	private static void printArrayElements(Doc doc, Query query, AhatArrayInstance array) {
	doc.section("Array Elements");
	AhatInstance base = array.getBaseline();
	boolean diff = array.getBaseline() != array && !base.isPlaceHolder();
	doc.table(
	new Column("Index", Column.Align.RIGHT),
	new Column("Value"),
	new Column("Δ", Column.Align.LEFT, diff));

	List<Value> elements = array.getValues();
	SubsetSelector<Value> selector = new SubsetSelector(query, ARRAY_ELEMENTS_ID, elements);
	int i = 0;
	for (Value current : selector.selected()) {
	DocString delta = new DocString();
	if (diff) {
	Value previous = Value.getBaseline(base.asArrayInstance().getValue(i));
	if (!Objects.equals(current, previous)) {
	delta.append("was ");
	delta.append(Summarizer.summarize(previous));
	}
	}
	doc.row(DocString.format("%d", i), Summarizer.summarize(current), delta);
	i++;
	}
	doc.end();
	selector.render(doc);
	}

	private static void printFields(Doc doc, boolean diff, List<FieldValue> fields) {
	doc.table(
	new Column("Type"),
	new Column("Name"),
	new Column("Value"),
	new Column("Δ", Column.Align.LEFT, diff));

	for (FieldValue field : fields) {
	Value current = field.getValue();
	DocString value;
	if (field.isPlaceHolder()) {
	value = DocString.removed("del");
	} else {
	value = Summarizer.summarize(current);
	}

	DocString delta = new DocString();
	FieldValue basefield = field.getBaseline();
	if (basefield.isPlaceHolder()) {
	delta.append(DocString.added("new"));
	} else {
	Value previous = Value.getBaseline(basefield.getValue());
	if (!Objects.equals(current, previous)) {
	delta.append("was ");
	delta.append(Summarizer.summarize(previous));
	}
	}
	doc.row(DocString.text(field.getType()), DocString.text(field.getName()), value, delta);
	}
	doc.end();
	}

	private static void printClassInfo(Doc doc, Query query, AhatClassObj clsobj) {
	doc.section("Class Info");
	doc.descriptions();
	doc.description(DocString.text("Super Class"),
	Summarizer.summarize(clsobj.getSuperClassObj()));
	doc.description(DocString.text("Class Loader"),
	Summarizer.summarize(clsobj.getClassLoader()));
	doc.end();

	doc.section("Static Fields");
	AhatInstance base = clsobj.getBaseline();
	List<FieldValue> fields = clsobj.getStaticFieldValues();
	if (!base.isPlaceHolder()) {
	Diff.fields(fields, base.asClassObj().getStaticFieldValues());
	}
	SubsetSelector<FieldValue> selector = new SubsetSelector(query, STATIC_FIELDS_ID, fields);
	printFields(doc, clsobj != base && !base.isPlaceHolder(), selector.selected());
	selector.render(doc);
	}

	private static void printReferences(Doc doc, Query query, AhatInstance inst) {
	doc.section("Objects with References to this Object");
	if (inst.getHardReverseReferences().isEmpty()) {
	doc.println(DocString.text("(none)"));
	} else {
	doc.table(new Column("Object"));
	List<AhatInstance> references = inst.getHardReverseReferences();
	SubsetSelector<AhatInstance> selector = new SubsetSelector(query, HARD_REFS_ID, references);
	for (AhatInstance ref : selector.selected()) {
	doc.row(Summarizer.summarize(ref));
	}
	doc.end();
	selector.render(doc);
	}

	if (!inst.getSoftReverseReferences().isEmpty()) {
	doc.section("Objects with Soft References to this Object");
	doc.table(new Column("Object"));
	List<AhatInstance> references = inst.getSoftReverseReferences();
	SubsetSelector<AhatInstance> selector = new SubsetSelector(query, SOFT_REFS_ID, references);
	for (AhatInstance ref : selector.selected()) {
	doc.row(Summarizer.summarize(ref));
	}
	doc.end();
	selector.render(doc);
	}
	}

	private void printAllocationSite(Doc doc, Query query, AhatInstance inst) {
	doc.section("Allocation Site");
	Site site = inst.getSite();
	SitePrinter.printSite(mSnapshot, doc, query, ALLOCATION_SITE_ID, site);
	}

	// Draw the bitmap corresponding to this instance if there is one.
	private static void printBitmap(Doc doc, AhatInstance inst) {
	AhatInstance bitmap = inst.getAssociatedBitmapInstance();
	if (bitmap != null) {
	doc.section("Bitmap Image");
	doc.println(DocString.image(
	DocString.formattedUri("bitmap?id=%d", bitmap.getId()), "bitmap image"));
	}
	}

	private void printGcRootPath(Doc doc, Query query, AhatInstance inst) {
	doc.section("Sample Path from GC Root");
	List<PathElement> path = inst.getPathFromGcRoot();
	doc.table(new Column(""), new Column("Path Element"));
	doc.row(DocString.text("(rooted)"),
	DocString.link(DocString.uri("root"), DocString.text("ROOT")));
	for (PathElement element : path) {
	DocString label = DocString.text("→ ");
	label.append(Summarizer.summarize(element.instance));
	label.append(element.field);
	doc.row(DocString.text(element.isDominator ? "(dominator)" : ""), label);
	};
	doc.end();
	}

	public void printDominatedObjects(Doc doc, Query query, AhatInstance inst) {
	doc.section("Immediately Dominated Objects");
	List<AhatInstance> instances = inst.getDominated();
	if (instances != null) {
	DominatedList.render(mSnapshot, doc, query, DOMINATED_OBJECTS_ID, instances);
	} else {
	doc.println(DocString.text("(none)"));
	}
	}
	}