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DTFJIndexBuilder.java
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DTFJIndexBuilder.java
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/*******************************************************************************
* Copyright (c) 2009,2023 IBM Corporation.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.mat.dtfj;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.Serializable;
import java.lang.ref.SoftReference;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.IdentityHashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Random;
import java.util.Set;
import java.util.Timer;
import java.util.TimerTask;
import java.util.TreeSet;
import java.util.WeakHashMap;
import java.util.regex.Pattern;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.mat.SnapshotException;
import org.eclipse.mat.collect.ArrayLong;
import org.eclipse.mat.collect.BitField;
import org.eclipse.mat.collect.HashMapIntLong;
import org.eclipse.mat.collect.HashMapIntObject;
import org.eclipse.mat.collect.HashMapLongObject;
import org.eclipse.mat.collect.IteratorInt;
import org.eclipse.mat.collect.IteratorLong;
import org.eclipse.mat.collect.SetInt;
import org.eclipse.mat.collect.SetLong;
import org.eclipse.mat.parser.IIndexBuilder;
import org.eclipse.mat.parser.IPreliminaryIndex;
import org.eclipse.mat.parser.index.IIndexReader;
import org.eclipse.mat.parser.index.IIndexReader.IOne2ManyIndex;
import org.eclipse.mat.parser.index.IIndexReader.IOne2SizeIndex;
import org.eclipse.mat.parser.index.IndexManager.Index;
import org.eclipse.mat.parser.index.IndexReader.SizeIndexReader;
import org.eclipse.mat.parser.index.IndexWriter;
import org.eclipse.mat.parser.index.IndexWriter.IntIndexStreamer;
import org.eclipse.mat.parser.index.IndexWriter.LongIndexStreamer;
import org.eclipse.mat.parser.index.IndexWriter.SizeIndexCollectorUncompressed;
import org.eclipse.mat.parser.model.ClassImpl;
import org.eclipse.mat.parser.model.XGCRootInfo;
import org.eclipse.mat.parser.model.XSnapshotInfo;
import org.eclipse.mat.snapshot.MultipleSnapshotsException;
import org.eclipse.mat.snapshot.UnreachableObjectsHistogram;
import org.eclipse.mat.snapshot.model.Field;
import org.eclipse.mat.snapshot.model.FieldDescriptor;
import org.eclipse.mat.snapshot.model.GCRootInfo;
import org.eclipse.mat.snapshot.model.IObject;
import org.eclipse.mat.snapshot.model.IObject.Type;
import org.eclipse.mat.snapshot.model.ObjectReference;
import org.eclipse.mat.util.IProgressListener;
import org.eclipse.mat.util.IProgressListener.Severity;
import org.eclipse.mat.util.MessageUtil;
import com.ibm.dtfj.image.CorruptData;
import com.ibm.dtfj.image.CorruptDataException;
import com.ibm.dtfj.image.DTFJException;
import com.ibm.dtfj.image.DataUnavailable;
import com.ibm.dtfj.image.Image;
import com.ibm.dtfj.image.ImageAddressSpace;
import com.ibm.dtfj.image.ImageFactory;
import com.ibm.dtfj.image.ImagePointer;
import com.ibm.dtfj.image.ImageProcess;
import com.ibm.dtfj.image.ImageSection;
import com.ibm.dtfj.image.ImageStackFrame;
import com.ibm.dtfj.image.ImageThread;
import com.ibm.dtfj.image.MemoryAccessException;
import com.ibm.dtfj.java.JavaClass;
import com.ibm.dtfj.java.JavaClassLoader;
import com.ibm.dtfj.java.JavaField;
import com.ibm.dtfj.java.JavaHeap;
import com.ibm.dtfj.java.JavaLocation;
import com.ibm.dtfj.java.JavaMethod;
import com.ibm.dtfj.java.JavaMonitor;
import com.ibm.dtfj.java.JavaObject;
import com.ibm.dtfj.java.JavaReference;
import com.ibm.dtfj.java.JavaRuntime;
import com.ibm.dtfj.java.JavaStackFrame;
import com.ibm.dtfj.java.JavaThread;
import com.ibm.dtfj.java.JavaVMOption;
import com.ibm.dtfj.runtime.ManagedRuntime;
/**
* Reads and parses a DTFJ dump, building indexes which are then used by MAT to create a snapshot.
* @author ajohnson
*/
public class DTFJIndexBuilder implements IIndexBuilder
{
/*
* Names used as pseudo-class names
* Not translatable
*/
static final String METHOD = "<method>"; //$NON-NLS-1$
private static final String METHOD_TYPE = "<method type>"; //$NON-NLS-1$
static final String STACK_FRAME = "<stack frame>"; //$NON-NLS-1$
private static final String NATIVE_MEMORY = "<native memory>"; //$NON-NLS-1$
private static final String NATIVE_MEMORY_TYPE = "<native memory type>"; //$NON-NLS-1$
/*
* Field names for pseudo classes.
* Not translatable
*/
static final String STACK_DEPTH = "stackDepth"; //$NON-NLS-1$
static final String FRAME_NUMBER = "frameNumber"; //$NON-NLS-1$
static final String LOCATION_ADDRESS = "locationAddress"; //$NON-NLS-1$
static final String COMPILATION_LEVEL = "compilationLevel"; //$NON-NLS-1$
static final String NATIVE = "native"; //$NON-NLS-1$
static final String LINE_NUMBER = "lineNumber"; //$NON-NLS-1$
private static final String DECLARING_CLASS = "declaringClass"; //$NON-NLS-1$
static final String METHOD_NAME = "methodName"; //$NON-NLS-1$
static final String FILE_NAME = "fileName"; //$NON-NLS-1$
/** Separator between the package/class name and the method name */
static final String METHOD_NAME_PREFIX = "."; //$NON-NLS-1$
/** Unique string only found in method names */
static final String METHOD_NAME_SIG = "("; //$NON-NLS-1$
private static final String PLUGIN_ID = InitDTFJ.getDefault().getBundle().getSymbolicName();
/** The key to store the runtime id out of the dump */
static final String RUNTIME_ID_KEY = "$runtimeId"; //$NON-NLS-1$
/** How many elements in an object array to examine at once */
private static final int ARRAY_PIECE_SIZE = 100000;
/** How many bytes to scan in a native stack frame when looking for GC roots */
private static final int NATIVE_STACK_FRAME_SIZE = 2048;
/** How many bytes to scan in a Java stack frame when looking for GC roots */
private static final int JAVA_STACK_FRAME_SIZE = 256;
/**
* How many bytes to scan in a huge Java stack section when looking for GC
* roots
*/
private static final long JAVA_STACK_SECTION_MAX_SIZE = 1024 * 1024L;
/**
* How many bytes to scan in a huge native stack section when looking for GC
* roots
*/
private static final long NATIVE_STACK_SECTION_MAX_SIZE = 1024 * 1024L;
/** Whether DTFJ has root support */
private static final boolean haveDTFJRoots = true;
/** Whether to use DTFJ Root support */
private static final boolean useDTFJRoots = true;
/**
* Whether DTFJ has references support - per instance as can switch on for
* dumps without field info
*/
private boolean haveDTFJRefs = false;
/**
* Whether to use DTFJ references support - per instance as can switch on
* for dumps without field info
*/
private boolean useDTFJRefs = false;
/**
* Whether to include thread roots (e.g. Java_Locals) as full roots, or just
* thread roots + refs from the thread
*/
private static final boolean useThreadRefsNotRoots = true;
/**
* Find roots - mark all unreferenced objects as roots so that not many
* objects are lost by the initial GC by MAT
*/
private static final boolean presumeRoots = false;
/** Whether to mark all class loaders (if presume roots is true) */
private static final boolean markAllLoaders = false;
/** Whether to mark system classes as heap roots */
private static final boolean useSystemClassRoots = true;
/** Whether to skip heap roots marked marked as weak/soft reference etc. */
private static final boolean skipWeakRoots = true;
/** Whether to fix bad DTFJ superclass */
private static final boolean fixBadSuperclass = false;
/** Whether DTFJ has a bad Method equals */
private static final boolean faultyMethodEquals = false;
private final String methodsAsClassesPref = Platform.getPreferencesService().getString(PLUGIN_ID,
PreferenceConstants.P_METHODS, "", null); //$NON-NLS-1$
private final boolean suppressClassNativeSizes = Platform.getPreferencesService().getBoolean(PLUGIN_ID,
PreferenceConstants.P_SUPPRESS_CLASS_NATIVE_SIZES, false, null);
/** Whether to represent all methods as pseudo-classes */
private final boolean getExtraInfo2 = PreferenceConstants.ALL_METHODS_AS_CLASSES.equals(methodsAsClassesPref);
/** Whether to represent only the stack frames as pseudo-objects */
private final boolean getExtraInfo3 = PreferenceConstants.FRAMES_ONLY.equals(methodsAsClassesPref);
/** Whether to represent stack frames and methods as objects and classes */
private final boolean getExtraInfo = getExtraInfo2 || getExtraInfo3
|| PreferenceConstants.RUNNING_METHODS_AS_CLASSES.equals(methodsAsClassesPref);
/** name of java.lang.Class */
private static final String JAVA_LANG_CLASS ="java/lang/Class"; //$NON-NLS-1$
/** name of java.lang.ClassLoader */
private static final String JAVA_LANG_CLASSLOADER ="java/lang/ClassLoader"; //$NON-NLS-1$
/**
* Whether to guess finalizable objects as those unreferenced objects with
* finalizers
*/
private static final boolean guessFinalizables = true;
/** whether to print out debug information and make errors more severe */
private static final boolean debugInfo = InitDTFJ.getDefault().isDebugging();
/** severity flag for internal - info means error worked around safely */
private static final IProgressListener.Severity Severity_INFO = debugInfo ? Severity.ERROR : Severity.INFO;
/** severity flag for internal - warning means possible problem */
private static final IProgressListener.Severity Severity_WARNING = debugInfo ? Severity.ERROR : Severity.WARNING;
/** How many times to print out a repeating error */
private static final int errorCount = debugInfo ? getDebugOption("org.eclipse.mat.dtfj/errorCount", 20) : 20; //$NON-NLS-1$
/** print out extra information to the console */
private static final boolean verbose = InitDTFJ.getDefault().isDebugging()
&& getDebugOption("org.eclipse.mat.dtfj/debug/verbose", false); //$NON-NLS-1$
/** How many objects before it is worth saving the index to disk */
private static final int INDEX_COUNT_FOR_TEMPFILE = 5000000;
/** The actual dump file */
private File dump;
/** The string prefix used to build the index files */
private String pfx;
/**
* The requested runtime id, or null. In the rare case of more than one Java
* runtime in a dump then this can be used to select another JVM.
*/
private String runtimeId;
/** All the key DTFJ data */
private RuntimeInfo dtfjInfo;
/** The outbound references index */
private IndexWriter.IntArray1NWriter outRefs;
/** The temporary object id to size index, for arrays and variable sized objects - used to build arrayToSize.
* Could instead be a {@link SizeIndexCollectorUncompressed} but that is bigger. */
private ObjectToSize indexToSize;
/** The array size in bytes index */
private IOne2SizeIndex arrayToSize;
/** The object/class id number to address index for accumulation of ids */
private IndexWriter.Identifier indexToAddress0;
/** The object/class id number to address index once all ids are found */
private IIndexReader.IOne2LongIndex indexToAddress;
/** The object id to class id index for accumulation and lookup */
private IndexWriter.IntIndexCollector objectToClass;
/** The object id to class id index once mapping is done */
private IIndexReader.IOne2OneIndex objectToClass1;
/** The class id to MAT class information index */
private HashMapIntObject<ClassImpl> idToClass;
/** The map of object ids to lists of associated GC roots for that object id */
private HashMapIntObject<List<XGCRootInfo>> gcRoot;
/** The map of thread object ids to GC roots owned by that thread */
private HashMapIntObject<HashMapIntObject<List<XGCRootInfo>>> threadRoots;
/** Flag used to not guess if GC roots finds finalizables */
private boolean foundFinalizableGCRoots = false;
/** number of times getModifiers succeeded */
private int modifiersFound;
/** address space pointer size */
private int addressSpacePointerSize;
/** compressed refs found */
private boolean compressedRefs;
/** Used to remember dummy addresses for classes without addresses */
private HashMap<JavaClass, Long> dummyClassAddress = new HashMap<JavaClass, Long>();
/** Used to remember dummy addresses for methods without addresses */
private HashMap<JavaMethod, Long> dummyMethodAddress = new HashMap<JavaMethod, Long>();
/** Used to remember dummy addresses for methods without addresses which have a faulty equals() method */
private IdentityHashMap<JavaMethod, Long> dummyMethodAddress2 = new IdentityHashMap<JavaMethod, Long>();
/**
* Used to remember method addresses in case two different methods attempt
* to use the same address
*/
private HashMapLongObject<JavaMethod> methodAddresses = new HashMapLongObject<JavaMethod>();
/** The next address to use for a class without an address */
private long nextClassAddress = 0x1000000080000000L;
/** Used to store the addresses of all the classes loaded by each class loader */
HashMapIntObject<ArrayLong> loaderClassCache;
/**
* Just used to check efficiency of pseudo roots - holds alternative set of
* roots.
*/
private HashMapIntObject<String> missedRoots;
/**
* Used to see how much memory has been freed by the initial garbage
* collection
*/
private HashMapIntObject<ClassImpl> idToClass2;
/**
* Used to see how much memory has been freed by the initial garbage
* collection
*/
private IndexWriter.IntIndexCollector objectToClass2;
/** Which class instances to possibly discard */
private Pattern discardPattern = Pattern.compile("char\\[\\]|java\\.lang\\.String"); //$NON-NLS-1$
/** How often to discard */
private double discardRatio = 0.0;
/** Select which group of objects are discarded */
private double discardOffset = 0.0;
/** Random number seed for choosing discards */
private long discardSeed = 1;
/** Random number generator to choose what to discard */
private Random rand = new Random(discardSeed);
/** The class id to MAT class for discarded objects information index */
private HashMapIntObject<ClassImpl> discardIdToClass;
/**
* Used for very corrupt dumps without a java/lang/Class
*/
private static final class DummyJavaClass implements JavaClass, CorruptData
{
private final String name;
public DummyJavaClass(String name)
{
this.name = name;
}
public JavaClassLoader getClassLoader() throws CorruptDataException
{
throw new CorruptDataException(this);
}
public JavaClass getComponentType() throws CorruptDataException
{
throw new CorruptDataException(this);
}
public Iterator<?> getConstantPoolReferences()
{
return Collections.EMPTY_LIST.iterator();
}
public Iterator<?> getDeclaredFields()
{
return Collections.EMPTY_LIST.iterator();
}
public Iterator<?> getDeclaredMethods()
{
return Collections.EMPTY_LIST.iterator();
}
public ImagePointer getID()
{
return null;
}
public Iterator<?> getInterfaces()
{
return Collections.EMPTY_LIST.iterator();
}
public int getModifiers() throws CorruptDataException
{
throw new CorruptDataException(this);
}
public String getName() throws CorruptDataException
{
return name;
}
public JavaObject getObject() throws CorruptDataException
{
return null;
}
public Iterator<?> getReferences()
{
return Collections.EMPTY_LIST.iterator();
}
public JavaClass getSuperclass() throws CorruptDataException
{
throw new CorruptDataException(this);
}
public boolean isArray() throws CorruptDataException
{
return false;
}
public ImagePointer getAddress()
{
return null;
}
public long getInstanceSize() throws DataUnavailable, CorruptDataException
{
throw new DataUnavailable();
}
public JavaObject getProtectionDomain() throws DataUnavailable, CorruptDataException
{
throw new DataUnavailable();
}
public boolean isPacked() throws DataUnavailable, CorruptDataException
{
throw new DataUnavailable();
}
public long getPackedDataSize() throws DataUnavailable, CorruptDataException
{
throw new DataUnavailable();
}
}
/**
* Use to see how much memory has been freed by the initial garbage
* collection
*/
private static class ObjectToSize
{
/** For small objects */
private byte objectToSize[];
/** For large objects */
private HashMapIntLong bigObjs = new HashMapIntLong();
private static final int SHIFT = 3;
private static final int MASK = 0xff;
ObjectToSize(int size)
{
objectToSize = new byte[size];
}
long get(int index)
{
if (bigObjs.containsKey(index))
{
long size = bigObjs.get(index);
return size;
}
else
{
return (objectToSize[index] & MASK) << SHIFT;
}
}
long getSize(int index)
{
return get(index);
}
/**
* Rely on most object sizes being small, and having the lower 3 bits
* zero. Some classes will have sizes with lower 3 bits not zero, but
* there are a limited number of these. It is better to use expand the
* range for ordinary objects.
*
* @param index
* @param size
*/
void set(int index, long size)
{
if ((size & ~(MASK << SHIFT)) == 0)
{
objectToSize[index] = (byte) (size >>> SHIFT);
}
else
{
bigObjs.put(index, size);
}
}
public IIndexReader.IOne2SizeIndex writeTo(File indexFile) throws IOException
{
final int size = objectToSize.length;
return new SizeIndexReader(new IntIndexStreamer().writeTo(indexFile, new IteratorInt()
{
int i;
public boolean hasNext()
{
return i < size;
}
public int next()
{
if (!hasNext())
throw new NoSuchElementException();
return SizeIndexCollectorUncompressed.compress(getSize(i++));
}
}));
}
}
private ObjectToSize objectToSize2;
/**
* Same as HashMapLongObject except that the first
* item put will be the first returned.
* Relies on key 0 being returned first from {@link HashMapLongObject} and {@link SetLong}.
*/
private static abstract class RefStore<E>
{
long first;
public abstract E put(long key, E value);
public abstract int size();
public abstract Iterator<HashMapLongObject.Entry<E>> entries();
public abstract long[] getAllKeys();
public abstract boolean containsKey(long k);
public abstract IteratorLong keys();
}
private static class RefMap<E> extends RefStore<E>
{
final HashMapLongObject<E> map;
/**
* Create a map
*/
public RefMap()
{
map = new HashMapLongObject<E>();
}
public E put(long key, E value)
{
if (size() == 0)
first = key;
return map.put(key ^ first, value);
}
public int size()
{
return map.size();
}
public Iterator<HashMapLongObject.Entry<E>> entries()
{
final Iterator<HashMapLongObject.Entry<E>> it = map.entries();
return new Iterator<HashMapLongObject.Entry<E>>() {
public boolean hasNext()
{
return it.hasNext();
}
public HashMapLongObject.Entry<E> next()
{
final HashMapLongObject.Entry<E> e = it.next();
return new HashMapLongObject.Entry<E>()
{
public long getKey()
{
return e.getKey() ^ first;
}
public E getValue()
{
return e.getValue();
}
};
}
public void remove()
{
it.remove();
}
};
}
public long[] getAllKeys()
{
long ret[] = map.getAllKeys();
for (int i = 0; i < ret.length; ++i)
{
ret[i] ^= first;
}
return ret;
}
public boolean containsKey(long k)
{
return map.containsKey(k ^ first);
}
public IteratorLong keys()
{
final IteratorLong it = map.keys();
return new IteratorLong()
{
public boolean hasNext()
{
return it.hasNext();
}
public long next()
{
return it.next() ^ first;
}
};
}
}
private static class RefSet<E> extends RefStore<E>
{
final SetLong set;
/**
* Create a map which just stores keys, not values
*/
public RefSet()
{
set = new SetLong();
}
/**
* Note: returns null if no value already set, or
* the supplied value if an existing value is set,
* but not the previous value.
*/
public E put(long key, E value)
{
if (size() == 0)
first = key;
return set.add(key ^ first) ? null : value;
}
public int size()
{
return set.size();
}
public Iterator<HashMapLongObject.Entry<E>> entries()
{
final IteratorLong it = set.iterator();
return new Iterator<HashMapLongObject.Entry<E>>()
{
public boolean hasNext()
{
return it.hasNext();
}
public HashMapLongObject.Entry<E> next()
{
final long e = it.next();
return new HashMapLongObject.Entry<E>()
{
public long getKey()
{
return e ^ first;
}
public E getValue()
{
throw new UnsupportedOperationException();
}
};
}
public void remove()
{
throw new UnsupportedOperationException();
}
};
}
public long[] getAllKeys()
{
long ret[] = set.toArray();
for (int i = 0; i < ret.length; ++i)
{
ret[i] ^= first;
}
return ret;
}
public boolean containsKey(long k)
{
return set.contains(k ^ first);
}
public IteratorLong keys()
{
final IteratorLong it = set.iterator();
return new IteratorLong()
{
public boolean hasNext()
{
return it.hasNext();
}
public long next()
{
return it.next() ^ first;
}
};
}
}
/* Message counts to reduce duplicated messages */
private int msgNgetRefsMissing = errorCount;
private int msgNgetRefsExtra = errorCount;
private int msgNarrayRefsNPE = errorCount;
private int msgNgetRefsUnavailable = errorCount;
private int msgNgetRefsCorrupt = errorCount;
private int msgNbigSegs = errorCount;
private int msgNinvalidArray = errorCount;
private int msgNinvalidObj = errorCount;
private int msgNbrokenEquals = errorCount;
private int msgNbrokenInterfaceSuper = errorCount;
private int msgNmissingLoaderMsg = errorCount;
private int msgNcorruptCount = errorCount;
private int msgNrootsWarning = errorCount;
private int msgNguessFinalizable = errorCount;
private int msgNgetRefsAllMissing = errorCount;
private int msgNgetSuperclass = errorCount;
private int msgNnullThreadObject = errorCount;
private int msgNbadThreadInfo = errorCount;
private int msgNunexpectedModifiers = errorCount;
private int msgNcorruptSection = errorCount;
private int msgNclassForObject = errorCount;
private int msgNcomponentClass = errorCount;
private int msgNtypeForClassObject = errorCount;
private int msgNobjectSize = errorCount;
private int msgNoutboundReferences = errorCount;
private int msgNnoSuperClassForArray = errorCount;
private int msgNproblemReadingJavaStackFrame = errorCount;
private int msgNskipHeapObject = errorCount;
private int msgNthreadBlocking = errorCount;
private int msgNunexpectedSource = errorCount;
private int msgNcorruptCount1 = errorCount;
/*
* (non-Javadoc)
* @see org.eclipse.mat.parser.IIndexBuilder#cancel() Appears to be called
* first before anything happens
*/
public void cancel()
{
// Close DTFJ Image if possible
if (dtfjInfo != null)
DumpCache.releaseDump(dump, dtfjInfo, true);
if (outRefs != null)
{
outRefs.cancel();
outRefs = null;
}
if (arrayToSize != null)
{
try
{
arrayToSize.close();
}
catch (IOException e)
{}
arrayToSize.delete();
arrayToSize = null;
}
indexToAddress0 = null;
if (indexToAddress != null)
{
try
{
indexToAddress.close();
}
catch (IOException e)
{}
indexToAddress.delete();
indexToAddress = null;
}
objectToClass = null;
if (objectToClass1 != null)
{
try
{
objectToClass1.close();
}
catch (IOException e)
{}
objectToClass1.delete();
objectToClass1 = null;
}
idToClass = null;
if (objectToClass2 != null)
{
try
{
objectToClass2.close();
objectToClass2.delete();
}
catch (IOException e)
{}
objectToClass2 = null;
}
idToClass2 = null;
objectToSize2 = null;
}
/*
* (non-Javadoc)
* @see org.eclipse.mat.parser.IIndexBuilder#clean(int[],
* org.eclipse.mat.util.IProgressListener) Called after initial garbage
* collection to show new indices for objects and -1 for object which are
* garbage and have been deleted.
*/
public void clean(int[] purgedMapping, IProgressListener listener) throws IOException
{
if (purgedMapping == null)
{
listener.sendUserMessage(Severity.ERROR, Messages.DTFJIndexBuilder_NullPurgedMapping, null);
return;
}
listener.beginTask(Messages.DTFJIndexBuilder_PurgingDeadObjectsFromImage, purgedMapping.length / 10000);
int count = 0;
long memFree = 0;
for (int i = 0; i < purgedMapping.length; ++i)
{
if (i % 10000 == 0)
{
listener.worked(1);
if (listener.isCanceled()) { throw new IProgressListener.OperationCanceledException(); }
}
if (purgedMapping[i] == -1)
{
++count;
if (objectToSize2 != null)
{
long objSize = objectToSize2.getSize(i);
memFree += objSize;
if (verbose)
{
int type = objectToClass2.get(i);
if (debugInfo) debugPrint("Purging " + i + " size " + objSize + " type " + type + " " + idToClass2.get(type)); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
}
}
if (missedRoots != null && missedRoots.containsKey(i))
{
if (debugInfo) debugPrint("Alternative roots would have found root " + i + " " + missedRoots.get(i)); //$NON-NLS-1$ //$NON-NLS-2$
}
}
else
{
// if (debugInfo) debugPrint("Remap "+i+"->"+purgedMapping[i]);
}
}
if (debugInfo)
{
listener.sendUserMessage(Severity.INFO, MessageFormat.format(Messages.DTFJIndexBuilder_PurgedIdentifiers,
count, memFree), null);
}
// Free memory
objectToSize2 = null;
missedRoots = null;
DumpCache.releaseDump(dump, dtfjInfo, false);
// Debug
listener.done();
}
/*
* (non-Javadoc)
* @seeorg.eclipse.mat.parser.IIndexBuilder#fill(org.eclipse.mat.parser.
* IPreliminaryIndex, org.eclipse.mat.util.IProgressListener) Fill the
* initial index with: mapping object index to address
*/
public void fill(IPreliminaryIndex index, IProgressListener listener) throws SnapshotException, IOException
{
if (debugInfo) debugPrint("Phase: Fill started"); //$NON-NLS-1$
long then1 = System.currentTimeMillis();
// This is 100% on the progress bar
final int workCount = 10000;
// How many objects to process before indicating to the progress bar
final int workObjectsStep = 10000;
listener.beginTask(MessageFormat.format(Messages.DTFJIndexBuilder_ProcessingImageFromFile, dump), workCount);
int workCountSoFar = 0;
XSnapshotInfo ifo = index.getSnapshotInfo();
// The dump may have changed, so reread it
DumpCache.clearCachedDump(dump);
Serializable dumpType = ifo.getProperty("$heapFormat"); //$NON-NLS-1$
dtfjInfo = DumpCache.getDump(dump, dumpType);
if (ifo.getProperty("discard_ratio") instanceof Integer) //$NON-NLS-1$
{
discardRatio = (Integer)ifo.getProperty("discard_ratio") / 100.0; //$NON-NLS-1$
if (ifo.getProperty("discard_offset") instanceof Integer) //$NON-NLS-1$
{
discardOffset = (Integer)ifo.getProperty("discard_offset") / 100.0; //$NON-NLS-1$
}
else
{
ifo.setProperty("discard_offset", (int)Math.round(discardOffset * 100)); //$NON-NLS-1$
}
if (ifo.getProperty("discard_seed") instanceof Integer) //$NON-NLS-1$
{
discardSeed = (Integer)ifo.getProperty("discard_seed"); //$NON-NLS-1$
}
else
{
ifo.setProperty("discard_seed", discardSeed); //$NON-NLS-1$
}
rand = new Random(discardSeed);
if (ifo.getProperty("discard_pattern") instanceof String) //$NON-NLS-1$
{
discardPattern = Pattern.compile((String)ifo.getProperty("discard_pattern")); //$NON-NLS-1$
}
else
{
ifo.setProperty("discard_pattern", discardPattern.toString()); //$NON-NLS-1$
}
}
long now1 = System.currentTimeMillis();
listener.sendUserMessage(Severity.INFO, MessageFormat.format(
Messages.DTFJIndexBuilder_TookmsToGetImageFromFile, (now1 - then1), dump, dumpType), null);
String reliabilityCheck = System.getProperty("reliabilityCheck"); //$NON-NLS-1$
if (reliabilityCheck == null)
{
reliabilityCheck = Platform.getPreferencesService().getString(PLUGIN_ID,
PreferenceConstants.P_RELIABILITY_CHECK, "", null); //$NON-NLS-1$
}
// Set a default preference value
if (!PreferenceConstants.RELIABILITY_FATAL.equals(reliabilityCheck)
&& !PreferenceConstants.RELIABILITY_WARNING.equals(reliabilityCheck)
&& !PreferenceConstants.RELIABILITY_SKIP.equals(reliabilityCheck))
{
reliabilityCheck = PreferenceConstants.RELIABILITY_FATAL;
}
if (!PreferenceConstants.RELIABILITY_SKIP.equals(reliabilityCheck))
{
DumpReliability reliability = checkDumpReliability(listener);
if (reliability == DumpReliability.DURING_GARBAGE_COLLECTION)
{
if (PreferenceConstants.RELIABILITY_FATAL.equals(reliabilityCheck))
{
throw new SnapshotException(MessageFormat.format(Messages.DTFJIndexBuilder_DuringGC));
}
else if (PreferenceConstants.RELIABILITY_WARNING.equals(reliabilityCheck))
{
listener.sendUserMessage(Severity.WARNING, Messages.DTFJIndexBuilder_DuringGC, null);
}
}
else if (reliability == DumpReliability.NON_EXCLUSIVE_ACCESS)
{
listener.sendUserMessage(Severity.WARNING, Messages.DTFJIndexBuilder_NonExclusive, null);
}
}
// Basic information
try
{
ifo.setCreationDate(new Date(dtfjInfo.getImage().getCreationTime()));
}
catch (DataUnavailable e)
{
listener.sendUserMessage(Severity.WARNING, Messages.DTFJIndexBuilder_NoDateInImage, e);
}
// Find the JVM
listener.worked(1);
workCountSoFar += 1;
listener.subTask(Messages.DTFJIndexBuilder_FindingJVM);
Serializable rtId = ifo.getProperty(RUNTIME_ID_KEY);
if (rtId instanceof String && ! rtId.equals("")) { //$NON-NLS-1$
runtimeId = (String) rtId;
}