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LeakHunterQuery.java
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LeakHunterQuery.java
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/*******************************************************************************
* Copyright (c) 2008, 2023 SAP AG, IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* SAP AG - initial API and implementation
* Andrew Johnson - improve progress monitor checking
*******************************************************************************/
package org.eclipse.mat.inspections;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Stack;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Pattern;
import org.eclipse.mat.SnapshotException;
import org.eclipse.mat.collect.ArrayIntBig;
import org.eclipse.mat.collect.BitField;
import org.eclipse.mat.collect.SetInt;
import org.eclipse.mat.inspections.FindLeaksQuery.AccumulationPoint;
import org.eclipse.mat.inspections.FindLeaksQuery.ExcludesConverter;
import org.eclipse.mat.inspections.FindLeaksQuery.SuspectRecord;
import org.eclipse.mat.inspections.FindLeaksQuery.SuspectRecordGroupOfObjects;
import org.eclipse.mat.inspections.threads.ThreadInfoQuery;
import org.eclipse.mat.inspections.util.ObjectTreeFactory;
import org.eclipse.mat.internal.Messages;
import org.eclipse.mat.internal.snapshot.inspections.MultiplePath2GCRootsQuery;
import org.eclipse.mat.query.BytesFormat;
import org.eclipse.mat.query.IContextObject;
import org.eclipse.mat.query.IContextObjectSet;
import org.eclipse.mat.query.IQuery;
import org.eclipse.mat.query.IResult;
import org.eclipse.mat.query.IResultTree;
import org.eclipse.mat.query.ISelectionProvider;
import org.eclipse.mat.query.annotations.Argument;
import org.eclipse.mat.query.annotations.Argument.Advice;
import org.eclipse.mat.query.annotations.CommandName;
import org.eclipse.mat.query.annotations.HelpUrl;
import org.eclipse.mat.query.annotations.Icon;
import org.eclipse.mat.query.refined.RefinedResultBuilder;
import org.eclipse.mat.query.refined.RefinedTree;
import org.eclipse.mat.query.registry.Converters;
import org.eclipse.mat.query.results.CompositeResult;
import org.eclipse.mat.query.results.ListResult;
import org.eclipse.mat.query.results.TextResult;
import org.eclipse.mat.report.ITestResult;
import org.eclipse.mat.report.Params;
import org.eclipse.mat.report.QuerySpec;
import org.eclipse.mat.report.SectionSpec;
import org.eclipse.mat.snapshot.ClassHistogramRecord;
import org.eclipse.mat.snapshot.Histogram;
import org.eclipse.mat.snapshot.IMultiplePathsFromGCRootsComputer;
import org.eclipse.mat.snapshot.ISnapshot;
import org.eclipse.mat.snapshot.MultiplePathsFromGCRootsClassRecord;
import org.eclipse.mat.snapshot.MultiplePathsFromGCRootsRecord;
import org.eclipse.mat.snapshot.extension.IThreadInfo;
import org.eclipse.mat.snapshot.extension.ITroubleTicketResolver;
import org.eclipse.mat.snapshot.model.GCRootInfo;
import org.eclipse.mat.snapshot.model.IClass;
import org.eclipse.mat.snapshot.model.IClassLoader;
import org.eclipse.mat.snapshot.model.IObject;
import org.eclipse.mat.snapshot.model.IStackFrame;
import org.eclipse.mat.snapshot.model.IThreadStack;
import org.eclipse.mat.snapshot.model.NamedReference;
import org.eclipse.mat.snapshot.model.ThreadToLocalReference;
import org.eclipse.mat.snapshot.query.Icons;
import org.eclipse.mat.snapshot.query.ObjectListResult;
import org.eclipse.mat.snapshot.query.PieFactory;
import org.eclipse.mat.snapshot.query.RetainedSizeDerivedData;
import org.eclipse.mat.snapshot.query.SnapshotQuery;
import org.eclipse.mat.snapshot.registry.TroubleTicketResolverRegistry;
import org.eclipse.mat.util.HTMLUtils;
import org.eclipse.mat.util.IProgressListener;
import org.eclipse.mat.util.MessageUtil;
import com.ibm.icu.text.NumberFormat;
@CommandName("leakhunter")
@Icon("/META-INF/icons/leak.gif")
@HelpUrl("/org.eclipse.mat.ui.help/tasks/runningleaksuspectreport.html")
public class LeakHunterQuery implements IQuery
{
static final String SYSTEM_CLASSLOADER = Messages.LeakHunterQuery_SystemClassLoader;
// Use per-instance formatters to avoid thread safety problems
NumberFormat percentFormatter;
{
// Use com.ibm.icu
percentFormatter = NumberFormat.getPercentInstance();
percentFormatter.setMinimumFractionDigits(2);
percentFormatter.setMaximumFractionDigits(2);
}
NumberFormat numberFormatter = NumberFormat.getNumberInstance();
BytesFormat bytesFormatter = BytesFormat.getInstance();
@Argument
public ISnapshot snapshot;
@Argument(isMandatory = false)
public int threshold_percent = 10;
@Argument(isMandatory = false)
public int max_paths = 10000;
@Argument(isMandatory = false, advice = Advice.CLASS_NAME_PATTERN, flag = "skip")
public Pattern skipPattern = Pattern.compile("java\\..*|javax\\..*|com\\.sun\\..*|sun\\..*|jdk\\..*"); //$NON-NLS-1$
@Argument(isMandatory = false)
public List<String> excludes = Arrays.asList( //
new String[] { "java.lang.ref.Reference:referent", "java.lang.ref.Finalizer:unfinalized", "java.lang.Runtime:" + "<" + GCRootInfo.getTypeAsString(GCRootInfo.Type.UNFINALIZED) + ">" }); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
private long totalHeap;
private IProgressListener listener;
public IResult execute(IProgressListener listener) throws Exception
{
this.listener = listener;
totalHeap = snapshot.getSnapshotInfo().getUsedHeapSize();
/* call find_leaks */
listener.subTask(Messages.LeakHunterQuery_FindingProblemSuspects);
FindLeaksQuery.SuspectsResultTable findLeaksResult = callFindLeaks(listener);
SuspectRecord[] leakSuspects = findLeaksResult.getData();
SectionSpec result = new SectionSpec(Messages.LeakHunterQuery_LeakHunter);
listener.subTask(Messages.LeakHunterQuery_PreparingResults);
if (leakSuspects.length > 0)
{
PieFactory pie = new PieFactory(snapshot);
for (int num = 0; num < leakSuspects.length; num++)
{
SuspectRecord rec = leakSuspects[num];
pie.addSlice(rec.suspect.getObjectId(), MessageUtil.format(Messages.LeakHunterQuery_ProblemSuspect, (num + 1)), rec.suspect.getUsedHeapSize(),
rec.getSuspectRetained());
}
result.add(new QuerySpec(Messages.LeakHunterQuery_Overview, pie.build()));
HashMap<Integer, List<Integer>> accPoint2ProblemNr = new HashMap<Integer, List<Integer>>();
int problemNum = 0;
for (SuspectRecord rec : leakSuspects)
{
problemNum++;
AccumulationPoint ap = rec.getAccumulationPoint();
if (ap != null)
{
List<Integer> numbers = accPoint2ProblemNr.get(ap.getObject().getObjectId());
if (numbers == null)
{
numbers = new ArrayList<Integer>(2);
accPoint2ProblemNr.put(ap.getObject().getObjectId(), numbers);
}
numbers.add(problemNum);
}
CompositeResult suspectDetails = getLeakSuspectDescription(rec, listener);
suspectDetails.setStatus(ITestResult.Status.ERROR);
QuerySpec spec = new QuerySpec(MessageUtil.format(Messages.LeakHunterQuery_ProblemSuspect, problemNum));
spec.setResult(suspectDetails);
spec.set(Params.Rendering.PATTERN, Params.Rendering.PATTERN_OVERVIEW_DETAILS);
spec.set(Params.Html.IS_IMPORTANT, Boolean.TRUE.toString());
result.add(spec);
}
// give hints for problems which could be related
List<CompositeResult> hints = findCommonPathForSuspects(accPoint2ProblemNr);
for (int k = 0; k < hints.size(); k++)
{
QuerySpec spec = new QuerySpec(MessageUtil.format(Messages.LeakHunterQuery_Hint, (k + 1)));
spec.setResult(hints.get(k));
spec.set(Params.Rendering.PATTERN, Params.Rendering.PATTERN_OVERVIEW_DETAILS);
spec.set(Params.Html.IS_IMPORTANT, Boolean.TRUE.toString());
result.add(spec);
}
}
if (result.getChildren().size() != 0)
{
return result;
}
else
{
return new TextResult(Messages.LeakHunterQuery_NothingFound);
}
}
FindLeaksQuery.SuspectsResultTable callFindLeaks(IProgressListener listener) throws Exception
{
return (FindLeaksQuery.SuspectsResultTable) SnapshotQuery.lookup("find_leaks", snapshot) //$NON-NLS-1$
.setArgument("threshold_percent", threshold_percent) //$NON-NLS-1$
.setArgument("max_paths", max_paths) //$NON-NLS-1$
.setArgument("excludes", excludes) //$NON-NLS-1$
.execute(listener);
}
private boolean isThreadRelated(SuspectRecord suspect) throws SnapshotException
{
return isThread(suspect.getSuspect().getObjectId());
}
private boolean isThread(int objectId) throws SnapshotException
{
GCRootInfo[] gcRootInfo = snapshot.getGCRootInfo(objectId);
if (gcRootInfo != null)
{
for (GCRootInfo singleInfo : gcRootInfo)
{
if (singleInfo.getType() == GCRootInfo.Type.THREAD_OBJ) { return true; }
}
}
return false;
}
/**
* Is this object a pseudo-object for
* stack frames as objects?
*/
private boolean isStackFrame(int objectId) throws SnapshotException
{
if (snapshot.getClassOf(objectId).doesExtend("<method>") || //$NON-NLS-1$
snapshot.getClassOf(objectId).doesExtend("<stack frame>")) //$NON-NLS-1$
return true;
return false;
}
/**
* Is this object a local variable from the frameId?
* @param frameId the stack frame ID, or thread ID if no stack frames as variables.
* @param objectId the object in questions
* @return true if a local variable
* @throws SnapshotException
*/
private boolean isStackFrameLocal(int frameId, int objectId) throws SnapshotException
{
IObject frame = snapshot.getObject(frameId);
List<NamedReference> refs = frame.getOutboundReferences();
for (NamedReference ref : refs)
{
if (ref instanceof ThreadToLocalReference)
{
if (ref.getObjectId() == objectId)
return true;
}
}
return false;
}
private CompositeResult getLeakSuspectDescription(SuspectRecord suspect, IProgressListener listener)
throws SnapshotException
{
if (suspect instanceof SuspectRecordGroupOfObjects)
{
return getLeakDescriptionGroupOfObjects((SuspectRecordGroupOfObjects) suspect, listener);
}
else
{
return getLeakDescriptionSingleObject(suspect, listener);
}
}
private CompositeResult getLeakDescriptionSingleObject(SuspectRecord suspect, IProgressListener listener)
throws SnapshotException
{
StringBuilder overview = new StringBuilder(256);
TextResult overviewResult = new TextResult(); // used to create links
// from it to other
// results
Set<String> keywords = new LinkedHashSet<String>();
List<IObject> objectsForTroubleTicketInfo = new ArrayList<IObject>(2);
int suspectId = suspect.getSuspect().getObjectId();
/* get dominator info */
boolean isThreadRelated = isThreadRelated(suspect);
if (isThreadRelated) // a thread bound problem
{
overview.append("<p>"); //$NON-NLS-1$
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_Thread, //
HTMLUtils.escapeText(suspect.getSuspect().getDisplayName()), //
formatRetainedHeap(suspect.getSuspectRetained(), totalHeap)));
overview.append("</p>"); //$NON-NLS-1$
}
else if (snapshot.isClassLoader(suspectId))
{
IClassLoader suspectClassloader = (IClassLoader) suspect.getSuspect();
objectsForTroubleTicketInfo.add(suspectClassloader);
String classloaderName = getClassLoaderName(suspectClassloader, keywords);
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ClassLoader, //
classloaderName, formatRetainedHeap(suspect.getSuspectRetained(), totalHeap)));
}
else if (snapshot.isClass(suspectId))
{
String className = ((IClass) suspect.getSuspect()).getName();
keywords.add(className);
IClassLoader suspectClassloader = (IClassLoader) snapshot.getObject(((IClass) suspect.getSuspect())
.getClassLoaderId());
// involvedClassloaders.add(suspectClassloader);
objectsForTroubleTicketInfo.add(suspect.getSuspect());
String classloaderName = getClassLoaderName(suspectClassloader, keywords);
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_Class, //
HTMLUtils.escapeText(className), classloaderName, formatRetainedHeap(suspect.getSuspectRetained(), totalHeap)));
}
else
{
String className = suspect.getSuspect().getClazz().getName();
keywords.add(className);
IClassLoader suspectClassloader = (IClassLoader) snapshot.getObject(suspect.getSuspect().getClazz()
.getClassLoaderId());
// involvedClassloaders.add(suspectClassloader);
objectsForTroubleTicketInfo.add(suspect.getSuspect());
String classloaderName = getClassLoaderName(suspectClassloader, keywords);
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_Instance, //
HTMLUtils.escapeText(className), classloaderName, formatRetainedHeap(suspect.getSuspectRetained(), totalHeap)));
/*
* if the class name matches the skip pattern, try to find the first
* referrer which does not match the pattern
*/
if (skipPattern.matcher(className).matches() && !isThreadRelated)
{
int referrerId = findReferrer(suspect.getSuspect().getObjectId());
if (referrerId != -1)
{
IObject referrer = snapshot.getObject(referrerId);
IObject referrerClassloader = null;
if (snapshot.isClassLoader(referrerId))
{
referrerClassloader = referrer;
objectsForTroubleTicketInfo.add(referrerClassloader);
String referrerClassloaderName = getClassLoaderName(referrerClassloader, keywords);
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ReferencedBy,
referrerClassloaderName));
}
else if (snapshot.isClass(referrerId))
{
className = ((IClass)referrer).getName();
keywords.add(className);
referrerClassloader = snapshot.getObject(((IClass) referrer).getClassLoaderId());
// involvedClassloaders.add(suspectClassloader);
objectsForTroubleTicketInfo.add(referrer);
String referrerClassloaderName = getClassLoaderName(referrerClassloader, keywords);
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ReferencedByClass, HTMLUtils.escapeText(className),
referrerClassloaderName));
}
else
{
if (isThread(referrerId))
{
isThreadRelated = true;
suspectId = referrerId;
IObject suspectObject = snapshot.getObject(suspectId);
suspect = new SuspectRecord(suspectObject, suspectObject.getRetainedHeapSize(), suspect.getAccumulationPoint());
}
className = referrer.getClazz().getName();
keywords.add(className);
referrerClassloader = snapshot.getObject(referrer.getClazz().getClassLoaderId());
// involvedClassloaders.add(suspectClassloader);
objectsForTroubleTicketInfo.add(referrer);
String referrerClassloaderName = getClassLoaderName(referrerClassloader, keywords);
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ReferencedByInstance, HTMLUtils.escapeText(referrer
.getDisplayName()), referrerClassloaderName));
if (isThreadRelated)
{
overview.append("<p>"); //$NON-NLS-1$
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_Thread, //
HTMLUtils.escapeText(suspect.getSuspect().getDisplayName()), //
formatRetainedHeap(suspect.getSuspectRetained(), totalHeap)));
overview.append("</p>"); //$NON-NLS-1$
}
}
}
}
}
/* get accumulation point info */
if (suspect.getAccumulationPoint() != null)
{
IObject accumulationObject = suspect.getAccumulationPoint().getObject();
int accumulationPointId = accumulationObject.getObjectId();
if (snapshot.isClassLoader(accumulationPointId))
{
IClassLoader accPointClassloader = (IClassLoader) accumulationObject;
objectsForTroubleTicketInfo.add(accPointClassloader);
String classloaderName = getClassLoaderName(accPointClassloader, keywords);
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_AccumulatedBy, classloaderName, formatRetainedHeap(suspect.getAccumulationPoint().getRetainedHeapSize(), totalHeap)));
}
else if (snapshot.isClass(accumulationPointId))
{
IClass clazz = (IClass) accumulationObject;
keywords.add(clazz.getName());
IClassLoader accPointClassloader = (IClassLoader) snapshot.getObject(clazz.getClassLoaderId());
// involvedClassloaders.add(accPointClassloader);
objectsForTroubleTicketInfo.add(accumulationObject);
String classloaderName = getClassLoaderName(accPointClassloader, keywords);
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_AccumulatedByLoadedBy, HTMLUtils.escapeText(clazz.getName()),
classloaderName, formatRetainedHeap(suspect.getAccumulationPoint().getRetainedHeapSize(), totalHeap)));
}
else
{
String className = accumulationObject.getClazz().getName();
keywords.add(className);
IClassLoader accPointClassloader = (IClassLoader) snapshot.getObject(accumulationObject.getClazz()
.getClassLoaderId());
// involvedClassloaders.add(accPointClassloader);
objectsForTroubleTicketInfo.add(accumulationObject);
String classloaderName = getClassLoaderName(accPointClassloader, keywords);
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_AccumulatedByInstance, HTMLUtils.escapeText(className),
classloaderName, formatRetainedHeap(suspect.getAccumulationPoint().getRetainedHeapSize(), totalHeap)));
}
}
/* extract request information for thread related problems */
ThreadInfoQuery.Result threadDetails = null;
IObject threadObj = null;
if (isThreadRelated)
{
threadDetails = extractThreadData(suspect, keywords, objectsForTroubleTicketInfo, overview, overviewResult);
threadObj = suspect.getSuspect();
}
IObject describedObject = (suspect.getAccumulationPoint() != null) ? suspect.getAccumulationPoint().getObject()
: suspect.getSuspect();
// add a path to the accumulation point
QuerySpec qspath;
try
{
IResult result = SnapshotQuery.lookup("path2gc", snapshot) //$NON-NLS-1$
.setArgument("object", describedObject) //$NON-NLS-1$
.setArgument("excludes", excludes) //$NON-NLS-1$
.execute(listener);
qspath = new QuerySpec(Messages.LeakHunterQuery_ShortestPaths, result);
StringBuilder sb = new StringBuilder("path2gc"); //$NON-NLS-1$
sb.append(" 0x").append(Long.toHexString(describedObject.getObjectAddress())); //$NON-NLS-1$
addExcludes(sb);
qspath.setCommand(sb.toString());
// See if the end of the path is a thread
if (!isThreadRelated && result instanceof IResultTree && result instanceof ISelectionProvider)
{
IResultTree tree = (IResultTree)result;
ISelectionProvider sel = (ISelectionProvider)result;
for (Object row : tree.getElements())
{
int r[] = findEndTree(tree, sel, row, describedObject.getObjectId(), -1);
if (r != null)
{
if (isThread(r[0]))
{
isThreadRelated = true;
int accObjId = (r[2] >= 0 && isStackFrame(r[1]) && isStackFrameLocal(r[1], r[2])) ? r[2] : r[1];
AccumulationPoint ap = accObjId >= 0 ? new AccumulationPoint(snapshot.getObject(accObjId)) : null;
IObject suspectObject = snapshot.getObject(r[0]);
SuspectRecord suspect2 = new SuspectRecord(suspectObject, suspectObject.getRetainedHeapSize(), ap);
objectsForTroubleTicketInfo.add(suspect2.getSuspect());
overview.append("<p>"); //$NON-NLS-1$
if (ap != null)
{
overview.append(MessageUtil.format(Messages.LeakHunterQuery_ThreadLocalVariable,
HTMLUtils.escapeText(suspect2.getSuspect().getDisplayName()),
HTMLUtils.escapeText(ap.getObject().getDisplayName()),
HTMLUtils.escapeText(describedObject.getDisplayName())));
}
else
{
overview.append(MessageUtil.format(Messages.LeakHunterQuery_ThreadShortestPath,
HTMLUtils.escapeText(suspect2.getSuspect().getDisplayName()),
HTMLUtils.escapeText(describedObject.getDisplayName())));
}
overview.append(" "); //$NON-NLS-1$
overview.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_Thread, //
HTMLUtils.escapeText(suspect2.getSuspect().getDisplayName()), //
formatRetainedHeap(suspect2.getSuspectRetained(), totalHeap)));
overview.append("</p>"); //$NON-NLS-1$
threadDetails = extractThreadData(suspect2, keywords, objectsForTroubleTicketInfo, overview, overviewResult);
threadObj = suspect2.getSuspect();
break;
}
}
}
}
}
catch (Exception e)
{
throw new SnapshotException(Messages.LeakHunterQuery_ErrorShortestPaths, e);
}
/* append keywords */
appendKeywords(keywords, overview);
// add CSN components data
appendTroubleTicketInformation(objectsForTroubleTicketInfo, overview);
/*
* Prepare the composite result from the different pieces
*/
CompositeResult composite = new CompositeResult();
overviewResult.setText(overview.toString());
composite.addResult(Messages.LeakHunterQuery_Description, overviewResult);
// add the result of a path to the accumulation point
composite.addResult(qspath);
// show the acc. point in the dominator tree
IResult objectInDominatorTree = showInDominatorTree(describedObject.getObjectId());
QuerySpec qs = new QuerySpec(Messages.LeakHunterQuery_AccumulatedObjects, objectInDominatorTree);
qs.setCommand("show_dominator_tree 0x" + Long.toHexString(describedObject.getObjectAddress())); //$NON-NLS-1$
composite.addResult(qs);
// add histogram of dominated.
IResult histogramOfDominated = getHistogramOfDominated(describedObject.getObjectId());
if (histogramOfDominated != null)
{
qs = new QuerySpec(Messages.LeakHunterQuery_AccumulatedObjectsByClass, histogramOfDominated);
qs.setCommand("show_dominator_tree 0x" + Long.toHexString(describedObject.getObjectAddress()) + " -groupby BY_CLASS"); //$NON-NLS-1$//$NON-NLS-2$
composite.addResult(qs);
IResult result = SnapshotQuery.lookup("show_retained_set", snapshot) //$NON-NLS-1$
.setArgument("objects", describedObject) //$NON-NLS-1$
.execute(listener);
qs = new QuerySpec(Messages.LeakHunterQuery_AllAccumulatedObjectsByClass, result);
qs.setCommand("show_retained_set 0x" + Long.toHexString(describedObject.getObjectAddress())); //$NON-NLS-1$
composite.addResult(qs);
}
if (threadDetails != null)
{
qs = new QuerySpec(Messages.LeakHunterQuery_ThreadDetails, threadDetails);
qs.setCommand("thread_details 0x" + Long.toHexString(threadObj.getObjectAddress())); //$NON-NLS-1$
composite.addResult(qs);
}
return composite;
}
private void addCommand(QuerySpec spec, String command, int suspects[])
{
if (suspects.length > 0)
{
if (suspects.length <= 30)
{
try
{
StringBuilder sb = new StringBuilder(command);
for (int i : suspects)
{
sb.append(" 0x").append(Long.toHexString(snapshot.mapIdToAddress(i))); //$NON-NLS-1$
}
spec.setCommand(sb.toString());
return;
}
catch (SnapshotException e)
{} // Ignore if problem
}
// Perhaps they are all the instances of a class
try
{
IClass cls = snapshot.getClassOf(suspects[0]);
if (cls.getNumberOfObjects() == suspects.length)
{
//
int a[] = cls.getObjectIds();
int b[] = suspects.clone();
Arrays.sort(a);
Arrays.sort(b);
if (Arrays.equals(a, b))
{
Collection<IClass> cl1 = snapshot.getClassesByName(cls.getName(), false);
if (cl1 != null && cl1.size() == 1)
{
StringBuilder sb = new StringBuilder(command);
sb.append(' ');
sb.append(cls.getName());
spec.setCommand(sb.toString());
return;
}
}
}
// See if in dominator tree
}
catch (SnapshotException e)
{}
}
}
private CompositeResult getLeakDescriptionGroupOfObjects(SuspectRecordGroupOfObjects suspect, IProgressListener listener)
throws SnapshotException
{
StringBuilder builder = new StringBuilder(256);
Set<String> keywords = new LinkedHashSet<String>();
List<IObject> objectsForTroubleTicketInfo = new ArrayList<IObject>(2);
/* get leak suspect info */
String className = ((IClass) suspect.getSuspect()).getName();
keywords.add(className);
IClassLoader classloader = (IClassLoader) snapshot
.getObject(((IClass) suspect.getSuspect()).getClassLoaderId());
objectsForTroubleTicketInfo.add(suspect.getSuspect());
String classloaderName = getClassLoaderName(classloader, keywords);
String numberOfInstances = numberFormatter.format(suspect.getSuspectInstances().length);
builder.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_InstancesOccupy, numberOfInstances, HTMLUtils.escapeText(className),
classloaderName, formatRetainedHeap(suspect.getSuspectRetained(), totalHeap)));
int[] suspectInstances = suspect.getSuspectInstances();
List<IObject> bigSuspectInstances = new ArrayList<IObject>();
for (int j = 0; j < suspectInstances.length; j++)
{
IObject inst = snapshot.getObject(suspectInstances[j]);
if (inst.getRetainedHeapSize() < (totalHeap / 100))
break;
bigSuspectInstances.add(inst);
}
if (bigSuspectInstances.size() > 0)
{
builder.append("<p>").append(Messages.LeakHunterQuery_BiggestInstances); //$NON-NLS-1$
builder.append("</p>"); //$NON-NLS-1$
builder.append("<ul title=\"").append(escapeHTMLAttribute(Messages.LeakHunterQuery_BiggestInstances)).append("\">"); //$NON-NLS-1$ //$NON-NLS-2$
for (IObject inst : bigSuspectInstances)
{
builder.append("<li>").append(HTMLUtils.escapeText(inst.getDisplayName())); //$NON-NLS-1$
builder.append(" - ") //$NON-NLS-1$
.append(
MessageUtil.format(Messages.LeakHunterQuery_Msg_Bytes,
formatRetainedHeap(inst.getRetainedHeapSize(),
totalHeap)));
builder.append("</li>"); //$NON-NLS-1$
}
builder.append("</ul>"); //$NON-NLS-1$
}
/* get accumulation point info */
if (suspect.getAccumulationPoint() != null)
{
builder.append("<p>"); //$NON-NLS-1$
int accumulationPointId = suspect.getAccumulationPoint().getObject().getObjectId();
if (snapshot.isClassLoader(accumulationPointId))
{
objectsForTroubleTicketInfo.add((IClassLoader) suspect.getAccumulationPoint().getObject());
classloaderName = getClassLoaderName(suspect.getAccumulationPoint().getObject(), keywords);
builder.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ReferencedFromClassLoader,
classloaderName, formatRetainedHeap(suspect.getAccumulationPoint().getRetainedHeapSize(), totalHeap)));
}
else if (snapshot.isClass(accumulationPointId))
{
className = ((IClass) suspect.getAccumulationPoint().getObject()).getName();
keywords.add(className);
IClassLoader accPointClassloader = (IClassLoader) snapshot.getObject(((IClass) suspect
.getAccumulationPoint().getObject()).getClassLoaderId());
// involvedClassLoaders.add(accPointClassloader);
objectsForTroubleTicketInfo.add(suspect.getAccumulationPoint().getObject());
classloaderName = getClassLoaderName(accPointClassloader, keywords);
builder.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ReferencedFromClass, HTMLUtils.escapeText(className),
classloaderName, formatRetainedHeap(suspect.getAccumulationPoint().getRetainedHeapSize(), totalHeap)));
}
else
{
className = suspect.getAccumulationPoint().getObject().getClazz().getName();
keywords.add(className);
IClassLoader accPointClassloader = (IClassLoader) snapshot.getObject(suspect.getAccumulationPoint()
.getObject().getClazz().getClassLoaderId());
// involvedClassLoaders.add(accPointClassloader);
objectsForTroubleTicketInfo.add(suspect.getAccumulationPoint().getObject());
classloaderName = getClassLoaderName(accPointClassloader, keywords);
builder.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ReferencedFromInstance, HTMLUtils.escapeText(className),
classloaderName, formatRetainedHeap(suspect.getAccumulationPoint().getRetainedHeapSize(), totalHeap)));
boolean isThreadRelated = isThread(suspect.getAccumulationPoint().getObject().getObjectId());
/*
* if the class name matches the skip pattern, try to find the first
* referrer which does not match the pattern
*/
if (skipPattern.matcher(className).matches() && !isThreadRelated)
{
int referrerId = findReferrer(accumulationPointId);
if (referrerId != -1)
{
IObject referrer = snapshot.getObject(referrerId);
IObject referrerClassloader = null;
if (snapshot.isClassLoader(referrerId))
{
referrerClassloader = referrer;
objectsForTroubleTicketInfo.add(referrerClassloader);
String referrerClassloaderName = getClassLoaderName(referrerClassloader, keywords);
builder.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ReferencedBy,
referrerClassloaderName));
}
else if (snapshot.isClass(referrerId))
{
className = ((IClass)referrer).getName();
keywords.add(className);
referrerClassloader = snapshot.getObject(((IClass) referrer).getClassLoaderId());
// involvedClassloaders.add(referrerClassloader);
objectsForTroubleTicketInfo.add(referrer);
String referrerClassloaderName = getClassLoaderName(referrerClassloader, keywords);
builder.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ReferencedByClass, HTMLUtils.escapeText(className),
referrerClassloaderName));
}
else
{
SuspectRecord suspect2 = null;
if (isThread(referrerId))
{
isThreadRelated = true;
int suspectId = referrerId;
IObject suspectObject = snapshot.getObject(suspectId);
suspect2 = new SuspectRecord(suspectObject, suspectObject.getRetainedHeapSize(), suspect.getAccumulationPoint());
}
className = referrer.getClazz().getName();
keywords.add(className);
referrerClassloader = snapshot.getObject(referrer.getClazz().getClassLoaderId());
// involvedClassloaders.add(suspectClassloader);
objectsForTroubleTicketInfo.add(referrer);
String referrerClassloaderName = getClassLoaderName(referrerClassloader, keywords);
builder.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_ReferencedByInstance, HTMLUtils.escapeText(referrer
.getDisplayName()), referrerClassloaderName));
if (isThreadRelated)
{
builder.append("<p>"); //$NON-NLS-1$
builder.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_Thread, //
HTMLUtils.escapeText(suspect2.getSuspect().getDisplayName()), //
formatRetainedHeap(suspect2.getSuspectRetained(), totalHeap)));
builder.append("</p>"); //$NON-NLS-1$
}
}
}
}
}
builder.append("</p>"); //$NON-NLS-1$
}
ThreadInfoQuery.Result threadDetails = null;
IObject threadObj = null;
/*
* Prepare the composite result from the different pieces
*/
CompositeResult composite = new CompositeResult();
TextResult overviewResult = new TextResult(); // used to create links
// Empty result, will be filled in later
composite.addResult(Messages.LeakHunterQuery_Description, overviewResult);
/*
* Show more details about the big instances
*/
if (bigSuspectInstances.size() > 0)
{
PieFactory pie = new PieFactory(snapshot, totalHeap);
int big[] = new int[bigSuspectInstances.size()];
long totalBig = 0;
long usedBig = 0;
for (int i = 0; i < bigSuspectInstances.size(); ++i)
{
IObject iObject = bigSuspectInstances.get(i);
big[i] = iObject.getObjectId();
pie.addSlice(big[i], iObject.getDisplayName(), iObject.getUsedHeapSize(), iObject.getRetainedHeapSize());
totalBig += iObject.getRetainedHeapSize();
usedBig += iObject.getUsedHeapSize();
}
long totalSuspects = 0;
long usedSuspects = 0;
for (int s : suspectInstances)
{
IObject inst = snapshot.getObject(s);
totalSuspects += inst.getRetainedHeapSize();
usedSuspects += inst.getUsedHeapSize();
}
pie.addSlice(-1, Messages.LeakHunterQuery_OtherSuspectInstances, usedSuspects - usedBig, totalSuspects - totalBig);
QuerySpec specPie = new QuerySpec(Messages.LeakHunterQuery_BiggestInstancesOverview, pie.build());
specPie.set(Params.Html.COLLAPSED, Boolean.TRUE.toString());
composite.addResult(specPie);
QuerySpec spec = new QuerySpec(Messages.LeakHunterQuery_BiggestInstancesHeading,
new ObjectListResult.Outbound(snapshot, big));
try
{
StringBuilder sb = new StringBuilder("list_objects"); //$NON-NLS-1$
for (int i : big)
{
sb.append(" 0x").append(Long.toHexString(snapshot.mapIdToAddress(i))); //$NON-NLS-1$
}
spec.setCommand(sb.toString());
}
catch (SnapshotException e)
{} // Ignore if problem
spec.set(Params.Html.COLLAPSED, Boolean.TRUE.toString());
composite.addResult(spec);
}
// add histogram of suspects and show objects they retain
if (true)
{
IObject io = suspect.getSuspect();
String oql = null;
if (io instanceof IClass)
{
String cn = OQLclassName((IClass)io);
oql = "SELECT * FROM " + cn + " s WHERE dominatorof(s) = null"; //$NON-NLS-1$ //$NON-NLS-2$
}
RefinedResultBuilder rbuilder = SnapshotQuery.lookup("histogram", snapshot) //$NON-NLS-1$
.setArgument("objects", suspectInstances) //$NON-NLS-1$
.refine(listener);
rbuilder.setInlineRetainedSizeCalculation(true);
rbuilder.addDefaultContextDerivedColumn(RetainedSizeDerivedData.PRECISE);
IResult result = rbuilder.build();
QuerySpec qs = new QuerySpec(Messages.LeakHunterQuery_SuspectObjectsByClass, result);
addCommand(qs, "histogram", suspectInstances); //$NON-NLS-1$
if (qs.getCommand() == null)
{
qs.setCommand("histogram " + oql +";"); //$NON-NLS-1$ //$NON-NLS-2$
}
qs.set(Params.Html.COLLAPSED, Boolean.TRUE.toString());
composite.addResult(qs);
rbuilder = SnapshotQuery.lookup("show_retained_set", snapshot) //$NON-NLS-1$
.setArgument("objects", suspectInstances) //$NON-NLS-1$
.refine(listener);
rbuilder.setInlineRetainedSizeCalculation(true);
rbuilder.addDefaultContextDerivedColumn(RetainedSizeDerivedData.APPROXIMATE);
result = rbuilder.build();
qs = new QuerySpec(Messages.LeakHunterQuery_AllObjectsByClassRetained, result);
addCommand(qs, "show_retained_set", suspectInstances); //$NON-NLS-1$
if (qs.getCommand() == null)
{
qs.setCommand("show_retained_set " + oql +";"); //$NON-NLS-1$
}
qs.set(Params.Html.COLLAPSED, Boolean.TRUE.toString());
composite.addResult(qs);
}
AccumulationPoint accPoint = suspect.getAccumulationPoint();
if (accPoint != null)
{
QuerySpec qs = new QuerySpec(Messages.LeakHunterQuery_CommonPath, //
MultiplePath2GCRootsQuery.create(snapshot, suspect.getPathsComputer(), suspect.getCommonPath(), listener));
int paths[];
if (suspect.suspectInstances.length <= 25)
{
// Use all the objects
paths = suspect.suspectInstances;
}
else if (suspect.getCommonPath().length > 0)
{
// Just use the last of the common path
paths = new int[] { suspect.getCommonPath()[suspect.getCommonPath().length - 1] };
}
else
{
paths = new int[0];
}
if (paths.length > 0)
{
StringBuilder sb = new StringBuilder("merge_shortest_paths"); //$NON-NLS-1$
for (int objId : paths)
{
long addr = snapshot.mapIdToAddress(objId);
sb.append(" 0x").append(Long.toHexString(addr)); //$NON-NLS-1$
}
addExcludes(sb);
qs.setCommand(sb.toString());
}
composite.addResult(qs);
int path[] = suspect.getCommonPath();
if (path.length > 0)
{
if (isThread(path[0]))
{
AccumulationPoint ap;
if (path.length > 2 && isStackFrame(path[1]) && isStackFrameLocal(path[1], path[2]))
{
ap = new AccumulationPoint(snapshot.getObject(path[2]));
}
else if (path.length > 1)
{
ap = new AccumulationPoint(snapshot.getObject(path[1]));
}
else
{
ap = null;
}
IObject suspectObject = snapshot.getObject(path[0]);
SuspectRecord suspect2 = new SuspectRecord(suspectObject, suspectObject.getRetainedHeapSize(), ap);
objectsForTroubleTicketInfo.add(suspect2.getSuspect());
// Description
builder.append("<p>"); //$NON-NLS-1$
if (ap != null)
{
builder.append(MessageUtil.format(Messages.LeakHunterQuery_ThreadLocalVariable,
HTMLUtils.escapeText(suspect2.getSuspect().getDisplayName()),
HTMLUtils.escapeText(ap.getObject().getDisplayName()),
HTMLUtils.escapeText(accPoint.getObject().getDisplayName())));
}
else
{
builder.append(MessageUtil.format(Messages.LeakHunterQuery_ThreadShortestPath,
HTMLUtils.escapeText(suspect2.getSuspect().getDisplayName()),
HTMLUtils.escapeText(accPoint.getObject().getDisplayName())));
}
builder.append(" "); //$NON-NLS-1$
builder.append(MessageUtil.format(Messages.LeakHunterQuery_Msg_Thread, //
HTMLUtils.escapeText(suspect2.getSuspect().getDisplayName()), //
formatRetainedHeap(suspect2.getSuspectRetained(), totalHeap)));
builder.append("</p>"); //$NON-NLS-1$
threadDetails = extractThreadData(suspect2, keywords, objectsForTroubleTicketInfo, builder, overviewResult);
threadObj = suspect2.getSuspect();
// add keywords to builder later
// add CSN components data to builder later
}
}
// show the acc. point in the dominator tree
IObject describedObject = accPoint.getObject();
IResult objectInDominatorTree = showInDominatorTree(describedObject.getObjectId());
QuerySpec qs2 = new QuerySpec(Messages.LeakHunterQuery_AccumulatedObjects, objectInDominatorTree);
qs2.setCommand("show_dominator_tree 0x" + Long.toHexString(describedObject.getObjectAddress())); //$NON-NLS-1$
composite.addResult(qs2);
// add histogram of dominated.
IResult histogramOfDominated = getHistogramOfDominated(describedObject.getObjectId());
if (histogramOfDominated != null)
{
qs = new QuerySpec(Messages.LeakHunterQuery_AccumulatedObjectsByClass, histogramOfDominated);
qs.setCommand("show_dominator_tree 0x" + Long.toHexString(describedObject.getObjectAddress()) + " -groupby BY_CLASS"); //$NON-NLS-1$//$NON-NLS-2$
composite.addResult(qs);
IResult result = SnapshotQuery.lookup("show_retained_set", snapshot) //$NON-NLS-1$
.setArgument("objects", describedObject) //$NON-NLS-1$
.execute(listener);
qs = new QuerySpec(Messages.LeakHunterQuery_AllAccumulatedObjectsByClass, result);
qs.setCommand("show_retained_set 0x" + Long.toHexString(describedObject.getObjectAddress())); //$NON-NLS-1$
composite.addResult(qs);
}
}
else
{
IResult result = findReferencePattern(suspect);
if (result != null)
{
String msg = (suspect.getSuspectInstances().length > max_paths) ?
MessageUtil.format(Messages.LeakHunterQuery_ReferencePatternFor, max_paths) :
Messages.LeakHunterQuery_ReferencePattern;
QuerySpec qs = new QuerySpec(msg, result);
IObject io = suspect.getSuspect();
if (io instanceof IClass)
{
// Suspect has paths computer with supplied excludes
String cn = OQLclassName((IClass)io);
StringBuilder sb = new StringBuilder("merge_shortest_paths SELECT * FROM "); //$NON-NLS-1$
sb.append(cn).append(" s WHERE dominatorof(s) = null; -groupby FROM_GC_ROOTS_BY_CLASS"); //$NON-NLS-1$
addExcludes(sb);
qs.setCommand(sb.toString());
}
composite.addResult(qs);
}
}
// Postpone building overview until now