feat(jdk8): move files to new folder to avoid resources compiled.

jdkSrc/jdk8/com/sun/tools/hat/internal/model/AbstractJavaHeapObjectVisitor.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * A visitor for a JavaThing.  @see JavaObject#visitReferencedObjects()
+ *
+ */
+
+
+abstract public class AbstractJavaHeapObjectVisitor
+                implements JavaHeapObjectVisitor {
+    abstract public void visit(JavaHeapObject other);
+
+    /**
+     * Should the given field be excluded from the set of things visited?
+     * @return true if it should.
+     */
+    public boolean exclude(JavaClass clazz, JavaField f) {
+        return false;
+    }
+
+    /**
+     * @return true iff exclude might ever return true
+     */
+    public boolean mightExclude() {
+        return false;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/ArrayTypeCodes.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Primitive array type codes as defined by VM specification.
+ *
+ */
+public interface ArrayTypeCodes {
+    // Typecodes for array elements.
+    // Refer to newarray instruction in VM Spec.
+    public static final int T_BOOLEAN = 4;
+    public static final int T_CHAR    = 5;
+    public static final int T_FLOAT   = 6;
+    public static final int T_DOUBLE  = 7;
+    public static final int T_BYTE    = 8;
+    public static final int T_SHORT   = 9;
+    public static final int T_INT     = 10;
+    public static final int T_LONG    = 11;
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/HackJavaValue.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * This is used to represent values that the program doesn't really understand.
+ * This includes the null vlaue, and unresolved references (which shouldn't
+ * happen in well-formed hprof files).
+ *
+ *
+ * @author      Bill Foote
+ */
+
+
+
+
+public class HackJavaValue extends JavaValue {
+
+    private String value;
+    private int size;
+
+    public HackJavaValue(String value, int size) {
+        this.value = value;
+        this.size = size;
+    }
+
+    public String toString() {
+        return value;
+    }
+
+    public int getSize() {
+        return size;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaBoolean.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Represents a boolean (i.e. a boolean field in an instance).
+ *
+ * @author      Bill Foote
+ */
+
+
+public class JavaBoolean extends JavaValue {
+
+    boolean value;
+
+    public JavaBoolean(boolean value) {
+        this.value = value;
+    }
+
+    public String toString() {
+        return "" + value;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaByte.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Represents an byte (i.e. a byte field in an instance).
+ *
+ * @author      Bill Foote
+ */
+
+
+public class JavaByte extends JavaValue {
+
+    byte value;
+
+    public JavaByte(byte value) {
+        this.value = value;
+    }
+
+    public String toString() {
+        return "0x" + Integer.toString(((int) value) & 0xff, 16);
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaChar.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Represents a char (i.e. a char field in an instance).
+ *
+ * @author      Bill Foote
+ */
+
+
+public class JavaChar extends JavaValue {
+
+    char value;
+
+    public JavaChar(char value) {
+        this.value = value;
+    }
+
+    public String toString() {
+        return "" + value;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaClass.java

@@ -0,0 +1,503 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import java.util.Vector;
+import java.util.Enumeration;
+import com.sun.tools.hat.internal.util.CompositeEnumeration;
+import com.sun.tools.hat.internal.parser.ReadBuffer;
+
+/**
+ *
+ * @author      Bill Foote
+ */
+
+
+public class JavaClass extends JavaHeapObject {
+    // my id
+    private long id;
+    // my name
+    private String name;
+
+    // These are JavaObjectRef before resolve
+    private JavaThing superclass;
+    private JavaThing loader;
+    private JavaThing signers;
+    private JavaThing protectionDomain;
+
+    // non-static fields
+    private JavaField[] fields;
+    // static fields
+    private JavaStatic[] statics;
+
+    private static final JavaClass[] EMPTY_CLASS_ARRAY = new JavaClass[0];
+    // my subclasses
+    private JavaClass[] subclasses = EMPTY_CLASS_ARRAY;
+
+    // my instances
+    private Vector<JavaHeapObject> instances = new Vector<JavaHeapObject>();
+
+    // Who I belong to.  Set on resolve.
+    private Snapshot mySnapshot;
+
+    // Size of an instance, including VM overhead
+    private int instanceSize;
+    // Total number of fields including inherited ones
+    private int totalNumFields;
+
+
+    public JavaClass(long id, String name, long superclassId, long loaderId,
+                     long signersId, long protDomainId,
+                     JavaField[] fields, JavaStatic[] statics,
+                     int instanceSize) {
+        this.id = id;
+        this.name = name;
+        this.superclass = new JavaObjectRef(superclassId);
+        this.loader = new JavaObjectRef(loaderId);
+        this.signers = new JavaObjectRef(signersId);
+        this.protectionDomain = new JavaObjectRef(protDomainId);
+        this.fields = fields;
+        this.statics = statics;
+        this.instanceSize = instanceSize;
+    }
+
+    public JavaClass(String name, long superclassId, long loaderId,
+                     long signersId, long protDomainId,
+                     JavaField[] fields, JavaStatic[] statics,
+                     int instanceSize) {
+        this(-1L, name, superclassId, loaderId, signersId,
+             protDomainId, fields, statics, instanceSize);
+    }
+
+    public final JavaClass getClazz() {
+        return mySnapshot.getJavaLangClass();
+    }
+
+    public final int getIdentifierSize() {
+        return mySnapshot.getIdentifierSize();
+    }
+
+    public final int getMinimumObjectSize() {
+        return mySnapshot.getMinimumObjectSize();
+    }
+
+    public void resolve(Snapshot snapshot) {
+        if (mySnapshot != null) {
+            return;
+        }
+        mySnapshot = snapshot;
+        resolveSuperclass(snapshot);
+        if (superclass != null) {
+            ((JavaClass) superclass).addSubclass(this);
+        }
+
+        loader  = loader.dereference(snapshot, null);
+        signers  = signers.dereference(snapshot, null);
+        protectionDomain  = protectionDomain.dereference(snapshot, null);
+
+        for (int i = 0; i < statics.length; i++) {
+            statics[i].resolve(this, snapshot);
+        }
+        snapshot.getJavaLangClass().addInstance(this);
+        super.resolve(snapshot);
+        return;
+    }
+
+    /**
+     * Resolve our superclass.  This might be called well before
+     * all instances are available (like when reading deferred
+     * instances in a 1.2 dump file :-)  Calling this is sufficient
+     * to be able to explore this class' fields.
+     */
+    public void resolveSuperclass(Snapshot snapshot) {
+        if (superclass == null) {
+            // We must be java.lang.Object, so we have no superclass.
+        } else {
+            totalNumFields = fields.length;
+            superclass = superclass.dereference(snapshot, null);
+            if (superclass == snapshot.getNullThing()) {
+                superclass = null;
+            } else {
+                try {
+                    JavaClass sc = (JavaClass) superclass;
+                    sc.resolveSuperclass(snapshot);
+                    totalNumFields += sc.totalNumFields;
+                } catch (ClassCastException ex) {
+                    System.out.println("Warning!  Superclass of " + name + " is " + superclass);
+                    superclass = null;
+                }
+            }
+        }
+    }
+
+    public boolean isString() {
+        return mySnapshot.getJavaLangString() == this;
+    }
+
+    public boolean isClassLoader() {
+        return mySnapshot.getJavaLangClassLoader().isAssignableFrom(this);
+    }
+
+    /**
+     * Get a numbered field from this class
+     */
+    public JavaField getField(int i) {
+        if (i < 0 || i >= fields.length) {
+            throw new Error("No field " + i + " for " + name);
+        }
+        return fields[i];
+    }
+
+    /**
+     * Get the total number of fields that are part of an instance of
+     * this class.  That is, include superclasses.
+     */
+    public int getNumFieldsForInstance() {
+        return totalNumFields;
+    }
+
+    /**
+     * Get a numbered field from all the fields that are part of instance
+     * of this class.  That is, include superclasses.
+     */
+    public JavaField getFieldForInstance(int i) {
+        if (superclass != null) {
+            JavaClass sc = (JavaClass) superclass;
+            if (i < sc.totalNumFields) {
+                return sc.getFieldForInstance(i);
+            }
+            i -= sc.totalNumFields;
+        }
+        return getField(i);
+    }
+
+    /**
+     * Get the class responsible for field i, where i is a field number that
+     * could be passed into getFieldForInstance.
+     *
+     * @see JavaClass.getFieldForInstance()
+     */
+    public JavaClass getClassForField(int i) {
+        if (superclass != null) {
+            JavaClass sc = (JavaClass) superclass;
+            if (i < sc.totalNumFields) {
+                return sc.getClassForField(i);
+            }
+        }
+        return this;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public boolean isArray() {
+        return name.indexOf('[') != -1;
+    }
+
+    public Enumeration getInstances(boolean includeSubclasses) {
+        if (includeSubclasses) {
+            Enumeration res = instances.elements();
+            for (int i = 0; i < subclasses.length; i++) {
+                res = new CompositeEnumeration(res,
+                              subclasses[i].getInstances(true));
+            }
+            return res;
+        } else {
+            return instances.elements();
+        }
+    }
+
+    /**
+     * @return a count of the instances of this class
+     */
+    public int getInstancesCount(boolean includeSubclasses) {
+        int result = instances.size();
+        if (includeSubclasses) {
+            for (int i = 0; i < subclasses.length; i++) {
+                result += subclasses[i].getInstancesCount(includeSubclasses);
+            }
+        }
+        return result;
+    }
+
+    public JavaClass[] getSubclasses() {
+        return subclasses;
+    }
+
+    /**
+     * This can only safely be called after resolve()
+     */
+    public JavaClass getSuperclass() {
+        return (JavaClass) superclass;
+    }
+
+    /**
+     * This can only safely be called after resolve()
+     */
+    public JavaThing getLoader() {
+        return loader;
+    }
+
+    /**
+     * This can only safely be called after resolve()
+     */
+    public boolean isBootstrap() {
+        return loader == mySnapshot.getNullThing();
+    }
+
+    /**
+     * This can only safely be called after resolve()
+     */
+    public JavaThing getSigners() {
+        return signers;
+    }
+
+    /**
+     * This can only safely be called after resolve()
+     */
+    public JavaThing getProtectionDomain() {
+        return protectionDomain;
+    }
+
+    public JavaField[] getFields() {
+        return fields;
+    }
+
+    /**
+     * Includes superclass fields
+     */
+    public JavaField[] getFieldsForInstance() {
+        Vector<JavaField> v = new Vector<JavaField>();
+        addFields(v);
+        JavaField[] result = new JavaField[v.size()];
+        for (int i = 0; i < v.size(); i++) {
+            result[i] =  v.elementAt(i);
+        }
+        return result;
+    }
+
+
+    public JavaStatic[] getStatics() {
+        return statics;
+    }
+
+    // returns value of static field of given name
+    public JavaThing getStaticField(String name) {
+        for (int i = 0; i < statics.length; i++) {
+            JavaStatic s = statics[i];
+            if (s.getField().getName().equals(name)) {
+                return s.getValue();
+            }
+        }
+        return null;
+    }
+
+    public String toString() {
+        return "class " + name;
+    }
+
+    public int compareTo(JavaThing other) {
+        if (other instanceof JavaClass) {
+            return name.compareTo(((JavaClass) other).name);
+        }
+        return super.compareTo(other);
+    }
+
+
+    /**
+     * @return true iff a variable of type this is assignable from an instance
+     *          of other
+     */
+    public boolean isAssignableFrom(JavaClass other) {
+        if (this == other) {
+            return true;
+        } else if (other == null) {
+            return false;
+        } else {
+            return isAssignableFrom((JavaClass) other.superclass);
+            // Trivial tail recursion:  I have faith in javac.
+        }
+    }
+
+    /**
+     * Describe the reference that this thing has to target.  This will only
+     * be called if target is in the array returned by getChildrenForRootset.
+     */
+     public String describeReferenceTo(JavaThing target, Snapshot ss) {
+        for (int i = 0; i < statics.length; i++) {
+            JavaField f = statics[i].getField();
+            if (f.hasId()) {
+                JavaThing other = statics[i].getValue();
+                if (other == target) {
+                    return "static field " + f.getName();
+                }
+            }
+        }
+        return super.describeReferenceTo(target, ss);
+    }
+
+    /**
+     * @return the size of an instance of this class.  Gives 0 for an array
+     *          type.
+     */
+    public int getInstanceSize() {
+        return instanceSize + mySnapshot.getMinimumObjectSize();
+    }
+
+
+    /**
+     * @return The size of all instances of this class.  Correctly handles
+     *          arrays.
+     */
+    public long getTotalInstanceSize() {
+        int count = instances.size();
+        if (count == 0 || !isArray()) {
+            return count * instanceSize;
+        }
+
+        // array class and non-zero count, we have to
+        // get the size of each instance and sum it
+        long result = 0;
+        for (int i = 0; i < count; i++) {
+            JavaThing t = (JavaThing) instances.elementAt(i);
+            result += t.getSize();
+        }
+        return result;
+    }
+
+    /**
+     * @return the size of this object
+     */
+    public int getSize() {
+        JavaClass cl = mySnapshot.getJavaLangClass();
+        if (cl == null) {
+            return 0;
+        } else {
+            return cl.getInstanceSize();
+        }
+    }
+
+    public void visitReferencedObjects(JavaHeapObjectVisitor v) {
+        super.visitReferencedObjects(v);
+        JavaHeapObject sc = getSuperclass();
+        if (sc != null) v.visit(getSuperclass());
+
+        JavaThing other;
+        other = getLoader();
+        if (other instanceof JavaHeapObject) {
+            v.visit((JavaHeapObject)other);
+        }
+        other = getSigners();
+        if (other instanceof JavaHeapObject) {
+            v.visit((JavaHeapObject)other);
+        }
+        other = getProtectionDomain();
+        if (other instanceof JavaHeapObject) {
+            v.visit((JavaHeapObject)other);
+        }
+
+        for (int i = 0; i < statics.length; i++) {
+            JavaField f = statics[i].getField();
+            if (!v.exclude(this, f) && f.hasId()) {
+                other = statics[i].getValue();
+                if (other instanceof JavaHeapObject) {
+                    v.visit((JavaHeapObject) other);
+                }
+            }
+        }
+    }
+
+    // package-privates below this point
+    final ReadBuffer getReadBuffer() {
+        return mySnapshot.getReadBuffer();
+    }
+
+    final void setNew(JavaHeapObject obj, boolean flag) {
+        mySnapshot.setNew(obj, flag);
+    }
+
+    final boolean isNew(JavaHeapObject obj) {
+        return mySnapshot.isNew(obj);
+    }
+
+    final StackTrace getSiteTrace(JavaHeapObject obj) {
+        return mySnapshot.getSiteTrace(obj);
+    }
+
+    final void addReferenceFromRoot(Root root, JavaHeapObject obj) {
+        mySnapshot.addReferenceFromRoot(root, obj);
+    }
+
+    final Root getRoot(JavaHeapObject obj) {
+        return mySnapshot.getRoot(obj);
+    }
+
+    final Snapshot getSnapshot() {
+        return mySnapshot;
+    }
+
+    void addInstance(JavaHeapObject inst) {
+        instances.addElement(inst);
+    }
+
+    // Internals only below this point
+    private void addFields(Vector<JavaField> v) {
+        if (superclass != null) {
+            ((JavaClass) superclass).addFields(v);
+        }
+        for (int i = 0; i < fields.length; i++) {
+            v.addElement(fields[i]);
+        }
+    }
+
+    private void addSubclassInstances(Vector<JavaHeapObject> v) {
+        for (int i = 0; i < subclasses.length; i++) {
+            subclasses[i].addSubclassInstances(v);
+        }
+        for (int i = 0; i < instances.size(); i++) {
+            v.addElement(instances.elementAt(i));
+        }
+    }
+
+    private void addSubclass(JavaClass sub) {
+        JavaClass newValue[] = new JavaClass[subclasses.length + 1];
+        System.arraycopy(subclasses, 0, newValue, 0, subclasses.length);
+        newValue[subclasses.length] = sub;
+        subclasses = newValue;
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaDouble.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Represents a double (i.e. a double field in an instance).
+ *
+ * @author      Bill Foote
+ */
+
+
+public class JavaDouble extends JavaValue {
+
+    double value;
+
+    public JavaDouble(double value) {
+        this.value = value;
+    }
+
+    public String toString() {
+        return Double.toString(value);
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaField.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+
+/**
+ *
+ * @author      Bill Foote
+ */
+
+public class JavaField {
+
+    private String name;
+    private String signature;
+
+    public JavaField(String name, String signature) {
+        this.name = name;
+        this.signature = signature;
+    }
+
+
+    /**
+     * @return true if the type of this field is something that has an ID.
+     *          int fields, for exampe, don't.
+     */
+    public boolean hasId() {
+        char ch = signature.charAt(0);
+        return (ch == '[' || ch == 'L');
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getSignature() {
+        return signature;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaFloat.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Represents a float (i.e. a float field in an instance).
+ *
+ * @author      Bill Foote
+ */
+
+
+public class JavaFloat extends JavaValue {
+
+    float value;
+
+    public JavaFloat(float value) {
+        this.value = value;
+    }
+
+    public String toString() {
+        return Float.toString(value);
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaHeapObject.java

@@ -0,0 +1,207 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.Map;
+import com.sun.tools.hat.internal.util.Misc;
+
+
+/**
+ *
+ * @author      Bill Foote
+ */
+
+/**
+ * Represents an object that's allocated out of the Java heap.  It occupies
+ * memory in the VM, and is the sort of thing that in a JDK 1.1 VM had
+ * a handle.  It can be a
+ * JavaClass, a JavaObjectArray, a JavaValueArray or a JavaObject.
+ */
+
+public abstract class JavaHeapObject extends JavaThing {
+
+    //
+    // Who we refer to.  This is heavily optimized for space, because it's
+    // well worth trading a bit of speed for less swapping.
+    // referers and referersLen go through two phases:  Building and
+    // resolved.  When building, referers might have duplicates, but can
+    // be appended to.  When resolved, referers has no duplicates or
+    // empty slots.
+    //
+    private JavaThing[] referers = null;
+    private int referersLen = 0;        // -1 when resolved
+
+    public abstract JavaClass getClazz();
+    public abstract int getSize();
+    public abstract long getId();
+
+    /**
+     * Do any initialization this thing needs after its data is read in.
+     * Subclasses that override this should call super.resolve().
+     */
+    public void resolve(Snapshot snapshot) {
+        StackTrace trace = snapshot.getSiteTrace(this);
+        if (trace != null) {
+            trace.resolve(snapshot);
+        }
+    }
+
+    //
+    //  Eliminate duplicates from referers, and size the array exactly.
+    // This sets us up to answer queries.  See the comments around the
+    // referers data member for details.
+    //
+    void setupReferers() {
+        if (referersLen > 1) {
+            // Copy referers to map, screening out duplicates
+            Map<JavaThing, JavaThing> map = new HashMap<JavaThing, JavaThing>();
+            for (int i = 0; i < referersLen; i++) {
+                if (map.get(referers[i]) == null) {
+                    map.put(referers[i], referers[i]);
+                }
+            }
+
+            // Now copy into the array
+            referers = new JavaThing[map.size()];
+            map.keySet().toArray(referers);
+        }
+        referersLen = -1;
+    }
+
+
+    /**
+     * @return the id of this thing as hex string
+     */
+    public String getIdString() {
+        return Misc.toHex(getId());
+    }
+
+    public String toString() {
+        return getClazz().getName() + "@" + getIdString();
+    }
+
+    /**
+     * @return the StackTrace of the point of allocation of this object,
+     *          or null if unknown
+     */
+    public StackTrace getAllocatedFrom() {
+        return getClazz().getSiteTrace(this);
+    }
+
+    public boolean isNew() {
+        return getClazz().isNew(this);
+    }
+
+    void setNew(boolean flag) {
+        getClazz().setNew(this, flag);
+    }
+
+    /**
+     * Tell the visitor about all of the objects we refer to
+     */
+    public void visitReferencedObjects(JavaHeapObjectVisitor v) {
+        v.visit(getClazz());
+    }
+
+    void addReferenceFrom(JavaHeapObject other) {
+        if (referersLen == 0) {
+            referers = new JavaThing[1];        // It was null
+        } else if (referersLen == referers.length) {
+            JavaThing[] copy = new JavaThing[(3 * (referersLen + 1)) / 2];
+            System.arraycopy(referers, 0, copy, 0, referersLen);
+            referers = copy;
+        }
+        referers[referersLen++] = other;
+        // We just append to referers here.  Measurements have shown that
+        // around 10% to 30% are duplicates, so it's better to just append
+        // blindly and screen out all the duplicates at once.
+    }
+
+    void addReferenceFromRoot(Root r) {
+        getClazz().addReferenceFromRoot(r, this);
+    }
+
+    /**
+     * If the rootset includes this object, return a Root describing one
+     * of the reasons why.
+     */
+    public Root getRoot() {
+        return getClazz().getRoot(this);
+    }
+
+    /**
+     * Tell who refers to us.
+     *
+     * @return an Enumeration of JavaHeapObject instances
+     */
+    public Enumeration getReferers() {
+        if (referersLen != -1) {
+            throw new RuntimeException("not resolved: " + getIdString());
+        }
+        return new Enumeration() {
+
+            private int num = 0;
+
+            public boolean hasMoreElements() {
+                return referers != null && num < referers.length;
+            }
+
+            public Object nextElement() {
+                return referers[num++];
+            }
+        };
+    }
+
+    /**
+     * Given other, which the caller promises is in referers, determines if
+     * the reference is only a weak reference.
+     */
+    public boolean refersOnlyWeaklyTo(Snapshot ss, JavaThing other) {
+        return false;
+    }
+
+    /**
+     * Describe the reference that this thing has to target.  This will only
+     * be called if target is in the array returned by getChildrenForRootset.
+     */
+    public String describeReferenceTo(JavaThing target, Snapshot ss) {
+        return "??";
+    }
+
+    public boolean isHeapAllocated() {
+        return true;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaHeapObjectVisitor.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * A visitor for a JavaThing.  @see JavaObject#visitReferencedObjects()
+ *
+ * @author      Bill Foote
+ */
+
+
+public interface JavaHeapObjectVisitor {
+    public void visit(JavaHeapObject other);
+
+    /**
+     * Should the given field be excluded from the set of things visited?
+     * @return true if it should.
+     */
+    public boolean exclude(JavaClass clazz, JavaField f);
+
+    /**
+     * @return true iff exclude might ever return true
+     */
+    public boolean mightExclude();
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaInt.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Represents an integer (i.e. an int field in an instance).
+ *
+ * @author      Bill Foote
+ */
+
+
+public class JavaInt extends JavaValue {
+
+    int value;
+
+    public JavaInt(int value) {
+        this.value = value;
+    }
+
+    public String toString() {
+        return "" + value;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaLazyReadObject.java

@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import java.io.IOException;
+import com.sun.tools.hat.internal.parser.ReadBuffer;
+
+/*
+ * Base class for lazily read Java heap objects.
+ */
+public abstract class JavaLazyReadObject extends JavaHeapObject {
+
+    // file offset from which this object data starts
+    private final long offset;
+
+    protected JavaLazyReadObject(long offset) {
+        this.offset = offset;
+    }
+
+    public final int getSize() {
+        return getValueLength() + getClazz().getMinimumObjectSize();
+    }
+
+    protected final long getOffset() {
+        return offset;
+    }
+
+    // return the length of the data for this object
+    protected final int getValueLength() {
+        try {
+            return readValueLength();
+        } catch (IOException exp) {
+            System.err.println("lazy read failed at offset " + offset);
+            exp.printStackTrace();
+            return 0;
+        }
+    }
+
+    // get this object's content as byte array
+    protected final byte[] getValue() {
+        try {
+            return readValue();
+        } catch (IOException exp) {
+            System.err.println("lazy read failed at offset " + offset);
+            exp.printStackTrace();
+            return Snapshot.EMPTY_BYTE_ARRAY;
+        }
+    }
+
+    // get ID of this object
+    public final long getId() {
+        try {
+            ReadBuffer buf = getClazz().getReadBuffer();
+            int idSize = getClazz().getIdentifierSize();
+            if (idSize == 4) {
+                return ((long)buf.getInt(offset)) & Snapshot.SMALL_ID_MASK;
+            } else {
+                return buf.getLong(offset);
+            }
+        } catch (IOException exp) {
+            System.err.println("lazy read failed at offset " + offset);
+            exp.printStackTrace();
+            return -1;
+        }
+    }
+
+    protected abstract int readValueLength() throws IOException;
+    protected abstract byte[] readValue() throws IOException;
+
+    // make Integer or Long for given object ID
+    protected static Number makeId(long id) {
+        if ((id & ~Snapshot.SMALL_ID_MASK) == 0) {
+            return new Integer((int)id);
+        } else {
+            return new Long(id);
+        }
+    }
+
+    // get ID as long value from Number
+    protected static long getIdValue(Number num) {
+        long id = num.longValue();
+        if (num instanceof Integer) {
+            id &= Snapshot.SMALL_ID_MASK;
+        }
+        return id;
+    }
+
+    // read object ID from given index from given byte array
+    protected final long objectIdAt(int index, byte[] data) {
+        int idSize = getClazz().getIdentifierSize();
+        if (idSize == 4) {
+            return ((long)intAt(index, data)) & Snapshot.SMALL_ID_MASK;
+        } else {
+            return longAt(index, data);
+        }
+    }
+
+    // utility methods to read primitive types from byte array
+    protected static byte byteAt(int index, byte[] value) {
+        return value[index];
+    }
+
+    protected static boolean booleanAt(int index, byte[] value) {
+        return (value[index] & 0xff) == 0? false: true;
+    }
+
+    protected static char charAt(int index, byte[] value) {
+        int b1 = ((int) value[index++] & 0xff);
+        int b2 = ((int) value[index++] & 0xff);
+        return (char) ((b1 << 8) + b2);
+    }
+
+    protected static short shortAt(int index, byte[] value) {
+        int b1 = ((int) value[index++] & 0xff);
+        int b2 = ((int) value[index++] & 0xff);
+        return (short) ((b1 << 8) + b2);
+    }
+
+    protected static int intAt(int index, byte[] value) {
+        int b1 = ((int) value[index++] & 0xff);
+        int b2 = ((int) value[index++] & 0xff);
+        int b3 = ((int) value[index++] & 0xff);
+        int b4 = ((int) value[index++] & 0xff);
+        return ((b1 << 24) + (b2 << 16) + (b3 << 8) + b4);
+    }
+
+    protected static long longAt(int index, byte[] value) {
+        long val = 0;
+        for (int j = 0; j < 8; j++) {
+            val = val << 8;
+            int b = ((int)value[index++]) & 0xff;
+            val |= b;
+        }
+        return val;
+    }
+
+    protected static float floatAt(int index, byte[] value) {
+        int val = intAt(index, value);
+        return Float.intBitsToFloat(val);
+    }
+
+    protected static double doubleAt(int index, byte[] value) {
+        long val = longAt(index, value);
+        return Double.longBitsToDouble(val);
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaLong.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Represents a long (i.e. a long field in an instance).
+ *
+ * @author      Bill Foote
+ */
+
+
+public class JavaLong extends JavaValue {
+
+    long value;
+
+    public JavaLong(long value) {
+        this.value = value;
+    }
+
+    public String toString() {
+        return Long.toString(value);
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaObject.java

@@ -0,0 +1,334 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import java.io.IOException;
+import com.sun.tools.hat.internal.parser.ReadBuffer;
+
+/**
+ * Represents Java instance
+ *
+ * @author      Bill Foote
+ */
+public class JavaObject extends JavaLazyReadObject {
+
+    private Object clazz;       // Number before resolve
+                                // JavaClass after resolve
+    /**
+     * Construct a new JavaObject.
+     *
+     * @param classID id of the class object
+     * @param offset The offset of field data
+     */
+    public JavaObject(long classID, long offset) {
+        super(offset);
+        this.clazz = makeId(classID);
+    }
+
+    public void resolve(Snapshot snapshot) {
+        if (clazz instanceof JavaClass) {
+            return;
+        }
+        if (clazz instanceof Number) {
+            long classID = getIdValue((Number)clazz);
+            clazz = snapshot.findThing(classID);
+            if (! (clazz instanceof JavaClass)) {
+                warn("Class " + Long.toHexString(classID) + " not found, " +
+                     "adding fake class!");
+                int length;
+                ReadBuffer buf = snapshot.getReadBuffer();
+                int idSize = snapshot.getIdentifierSize();
+                long lenOffset = getOffset() + 2*idSize + 4;
+                try {
+                    length = buf.getInt(lenOffset);
+                } catch (IOException exp) {
+                    throw new RuntimeException(exp);
+                }
+                clazz = snapshot.addFakeInstanceClass(classID, length);
+            }
+        } else {
+            throw new InternalError("should not reach here");
+        }
+
+        JavaClass cl = (JavaClass) clazz;
+        cl.resolve(snapshot);
+
+        // while resolving, parse fields in verbose mode.
+        // but, getFields calls parseFields in non-verbose mode
+        // to avoid printing warnings repeatedly.
+        parseFields(getValue(), true);
+
+        cl.addInstance(this);
+        super.resolve(snapshot);
+    }
+
+    /**
+     * Are we the same type as other?  We are iff our clazz is the
+     * same type as other's.
+     */
+    public boolean isSameTypeAs(JavaThing other) {
+        if (!(other instanceof JavaObject)) {
+            return false;
+        }
+        JavaObject oo = (JavaObject) other;
+        return getClazz().equals(oo.getClazz());
+    }
+
+    /**
+     * Return our JavaClass object.  This may only be called after resolve.
+     */
+    public JavaClass getClazz() {
+        return (JavaClass) clazz;
+    }
+
+    public JavaThing[] getFields() {
+        // pass false to verbose mode so that dereference
+        // warnings are not printed.
+        return parseFields(getValue(), false);
+    }
+
+    // returns the value of field of given name
+    public JavaThing getField(String name) {
+        JavaThing[] flds = getFields();
+        JavaField[] instFields = getClazz().getFieldsForInstance();
+        for (int i = 0; i < instFields.length; i++) {
+            if (instFields[i].getName().equals(name)) {
+                return flds[i];
+            }
+        }
+        return null;
+    }
+
+    public int compareTo(JavaThing other) {
+        if (other instanceof JavaObject) {
+            JavaObject oo = (JavaObject) other;
+            return getClazz().getName().compareTo(oo.getClazz().getName());
+        }
+        return super.compareTo(other);
+    }
+
+    public void visitReferencedObjects(JavaHeapObjectVisitor v) {
+        super.visitReferencedObjects(v);
+        JavaThing[] flds = getFields();
+        for (int i = 0; i < flds.length; i++) {
+            if (flds[i] != null) {
+                if (v.mightExclude()
+                    && v.exclude(getClazz().getClassForField(i),
+                                 getClazz().getFieldForInstance(i)))
+                {
+                    // skip it
+                } else if (flds[i] instanceof JavaHeapObject) {
+                    v.visit((JavaHeapObject) flds[i]);
+                }
+            }
+        }
+    }
+
+    public boolean refersOnlyWeaklyTo(Snapshot ss, JavaThing other) {
+        if (ss.getWeakReferenceClass() != null) {
+            final int referentFieldIndex = ss.getReferentFieldIndex();
+            if (ss.getWeakReferenceClass().isAssignableFrom(getClazz())) {
+                //
+                // REMIND:  This introduces a dependency on the JDK
+                //      implementation that is undesirable.
+                JavaThing[] flds = getFields();
+                for (int i = 0; i < flds.length; i++) {
+                    if (i != referentFieldIndex && flds[i] == other) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Describe the reference that this thing has to target.  This will only
+     * be called if target is in the array returned by getChildrenForRootset.
+     */
+    public String describeReferenceTo(JavaThing target, Snapshot ss) {
+        JavaThing[] flds = getFields();
+        for (int i = 0; i < flds.length; i++) {
+            if (flds[i] == target) {
+                JavaField f = getClazz().getFieldForInstance(i);
+                return "field " + f.getName();
+            }
+        }
+        return super.describeReferenceTo(target, ss);
+    }
+
+    public String toString() {
+        if (getClazz().isString()) {
+            JavaThing value = getField("value");
+            if (value instanceof JavaValueArray) {
+                return ((JavaValueArray)value).valueString();
+            } else {
+                return "null";
+            }
+        } else {
+            return super.toString();
+        }
+    }
+
+    // Internals only below this point
+
+    /*
+     * Java instance record (HPROF_GC_INSTANCE_DUMP) looks as below:
+     *
+     *     object ID
+     *     stack trace serial number (int)
+     *     class ID
+     *     data length (int)
+     *     byte[length]
+     */
+    protected final int readValueLength() throws IOException {
+        JavaClass cl = getClazz();
+        int idSize = cl.getIdentifierSize();
+        long lengthOffset = getOffset() + 2*idSize + 4;
+        return cl.getReadBuffer().getInt(lengthOffset);
+    }
+
+    protected final byte[] readValue() throws IOException {
+        JavaClass cl = getClazz();
+        int idSize = cl.getIdentifierSize();
+        ReadBuffer buf = cl.getReadBuffer();
+        long offset = getOffset() + 2*idSize + 4;
+        int length = buf.getInt(offset);
+        if (length == 0) {
+            return Snapshot.EMPTY_BYTE_ARRAY;
+        } else {
+            byte[] res = new byte[length];
+            buf.get(offset + 4, res);
+            return res;
+        }
+    }
+
+    private JavaThing[] parseFields(byte[] data, boolean verbose) {
+        JavaClass cl = getClazz();
+        int target = cl.getNumFieldsForInstance();
+        JavaField[] fields = cl.getFields();
+        JavaThing[] fieldValues = new JavaThing[target];
+        Snapshot snapshot = cl.getSnapshot();
+        int idSize = snapshot.getIdentifierSize();
+        int fieldNo = 0;
+        // In the dump file, the fields are stored in this order:
+        // fields of most derived class (immediate class) are stored
+        // first and then the super class and so on. In this object,
+        // fields are stored in the reverse ("natural") order. i.e.,
+        // fields of most super class are stored first.
+
+        // target variable is used to compensate for the fact that
+        // the dump file starts field values from the leaf working
+        // upwards in the inheritance hierarchy, whereas JavaObject
+        // starts with the top of the inheritance hierarchy and works down.
+        target -= fields.length;
+        JavaClass currClass = cl;
+        int index = 0;
+        for (int i = 0; i < fieldValues.length; i++, fieldNo++) {
+            while (fieldNo >= fields.length) {
+                currClass = currClass.getSuperclass();
+                fields = currClass.getFields();
+                fieldNo = 0;
+                target -= fields.length;
+            }
+            JavaField f = fields[fieldNo];
+            char sig = f.getSignature().charAt(0);
+            switch (sig) {
+                case 'L':
+                case '[': {
+                    long id = objectIdAt(index, data);
+                    index += idSize;
+                    JavaObjectRef ref = new JavaObjectRef(id);
+                    fieldValues[target+fieldNo] = ref.dereference(snapshot, f, verbose);
+                    break;
+                }
+                case 'Z': {
+                    byte value = byteAt(index, data);
+                    index++;
+                    fieldValues[target+fieldNo] = new JavaBoolean(value != 0);
+                    break;
+                }
+                case 'B': {
+                    byte value = byteAt(index, data);
+                    index++;
+                    fieldValues[target+fieldNo] = new JavaByte(value);
+                    break;
+                }
+                case 'S': {
+                    short value = shortAt(index, data);
+                    index += 2;
+                    fieldValues[target+fieldNo] = new JavaShort(value);
+                    break;
+                }
+                case 'C': {
+                    char value = charAt(index, data);
+                    index += 2;
+                    fieldValues[target+fieldNo] = new JavaChar(value);
+                    break;
+                }
+                case 'I': {
+                    int value = intAt(index, data);
+                    index += 4;
+                    fieldValues[target+fieldNo] = new JavaInt(value);
+                    break;
+                }
+                case 'J': {
+                    long value = longAt(index, data);
+                    index += 8;
+                    fieldValues[target+fieldNo] = new JavaLong(value);
+                    break;
+                }
+                case 'F': {
+                    float value = floatAt(index, data);
+                    index += 4;
+                    fieldValues[target+fieldNo] = new JavaFloat(value);
+                    break;
+                }
+                case 'D': {
+                    double value = doubleAt(index, data);
+                    index += 8;
+                    fieldValues[target+fieldNo] = new JavaDouble(value);
+                    break;
+                }
+                default:
+                    throw new RuntimeException("invalid signature: " + sig);
+            }
+        }
+        return fieldValues;
+    }
+
+    private void warn(String msg) {
+        System.out.println("WARNING: " + msg);
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaObjectArray.java

@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import java.io.IOException;
+import com.sun.tools.hat.internal.parser.ReadBuffer;
+
+/**
+ * @author      Bill Foote
+ */
+public class JavaObjectArray extends JavaLazyReadObject {
+
+    private Object clazz;  // Long before resolve, the class after resolve
+
+    public JavaObjectArray(long classID, long offset) {
+        super(offset);
+        this.clazz = makeId(classID);
+    }
+
+    public JavaClass getClazz() {
+        return (JavaClass) clazz;
+    }
+
+    public void resolve(Snapshot snapshot) {
+        if (clazz instanceof JavaClass) {
+            return;
+        }
+        long classID = getIdValue((Number)clazz);
+        if (snapshot.isNewStyleArrayClass()) {
+            // Modern heap dumps do this
+            JavaThing t = snapshot.findThing(classID);
+            if (t instanceof JavaClass) {
+                clazz = (JavaClass) t;
+            }
+        }
+        if (!(clazz instanceof JavaClass)) {
+            JavaThing t = snapshot.findThing(classID);
+            if (t != null && t instanceof JavaClass) {
+                JavaClass el = (JavaClass) t;
+                String nm = el.getName();
+                if (!nm.startsWith("[")) {
+                    nm = "L" + el.getName() + ";";
+                }
+                clazz = snapshot.getArrayClass(nm);
+            }
+        }
+
+        if (!(clazz instanceof JavaClass)) {
+            clazz = snapshot.getOtherArrayType();
+        }
+        ((JavaClass)clazz).addInstance(this);
+        super.resolve(snapshot);
+    }
+
+    public JavaThing[] getValues() {
+        return getElements();
+    }
+
+    public JavaThing[] getElements() {
+        Snapshot snapshot = getClazz().getSnapshot();
+        byte[] data = getValue();
+        final int idSize = snapshot.getIdentifierSize();
+        final int numElements = data.length / idSize;
+        JavaThing[] elements = new JavaThing[numElements];
+        int index = 0;
+        for (int i = 0; i < elements.length; i++) {
+            long id = objectIdAt(index, data);
+            index += idSize;
+            elements[i] = snapshot.findThing(id);
+        }
+        return elements;
+    }
+
+    public int compareTo(JavaThing other) {
+        if (other instanceof JavaObjectArray) {
+            return 0;
+        }
+        return super.compareTo(other);
+    }
+
+    public int getLength() {
+        return getValueLength() / getClazz().getIdentifierSize();
+    }
+
+    public void visitReferencedObjects(JavaHeapObjectVisitor v) {
+        super.visitReferencedObjects(v);
+        JavaThing[] elements = getElements();
+        for (int i = 0; i < elements.length; i++) {
+            if (elements[i] != null && elements[i] instanceof JavaHeapObject) {
+                v.visit((JavaHeapObject) elements[i]);
+            }
+        }
+    }
+
+    /**
+     * Describe the reference that this thing has to target.  This will only
+     * be called if target is in the array returned by getChildrenForRootset.
+     */
+    public String describeReferenceTo(JavaThing target, Snapshot ss) {
+        JavaThing[] elements = getElements();
+        for (int i = 0; i < elements.length; i++) {
+            if (elements[i] == target) {
+                return "Element " + i + " of " + this;
+            }
+        }
+        return super.describeReferenceTo(target, ss);
+    }
+
+    /*
+     * Java object array record (HPROF_GC_OBJ_ARRAY_DUMP)
+     * looks as below:
+     *
+     *     object ID
+     *     stack trace serial number (int)
+     *     array length (int)
+     *     array class ID
+     *     array element IDs
+     */
+    protected final int readValueLength() throws IOException {
+        JavaClass cl = getClazz();
+        ReadBuffer buf = cl.getReadBuffer();
+        int idSize = cl.getIdentifierSize();
+        long offset = getOffset() + idSize + 4;
+        int len = buf.getInt(offset);
+        return len * cl.getIdentifierSize();
+    }
+
+    protected final byte[] readValue() throws IOException {
+        JavaClass cl = getClazz();
+        ReadBuffer buf = cl.getReadBuffer();
+        int idSize = cl.getIdentifierSize();
+        long offset = getOffset() + idSize + 4;
+        int len = buf.getInt(offset);
+        if (len == 0) {
+            return Snapshot.EMPTY_BYTE_ARRAY;
+        } else {
+            byte[] res = new byte[len * idSize];
+            buf.get(offset + 4 + idSize, res);
+            return res;
+        }
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaObjectRef.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import com.sun.tools.hat.internal.util.Misc;
+
+/**
+ * A forward reference to an object.  This is an intermediate representation
+ * for a JavaThing, when we have the thing's ID, but we might not have read
+ * the thing yet.
+ *
+ * @author      Bill Foote
+ */
+public class JavaObjectRef extends JavaThing {
+    private long id;
+
+    public JavaObjectRef(long id) {
+        this.id = id;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public boolean isHeapAllocated() {
+        return true;
+    }
+
+    public JavaThing dereference(Snapshot snapshot, JavaField field) {
+        return dereference(snapshot, field, true);
+    }
+
+    public JavaThing dereference(Snapshot snapshot, JavaField field, boolean verbose) {
+        if (field != null && !field.hasId()) {
+            // If this happens, we must be a field that represents an int.
+            // (This only happens with .bod-style files)
+            return new JavaLong(id);
+        }
+        if (id == 0) {
+            return snapshot.getNullThing();
+        }
+        JavaThing result = snapshot.findThing(id);
+        if (result == null) {
+            if (!snapshot.getUnresolvedObjectsOK() && verbose) {
+                String msg = "WARNING:  Failed to resolve object id "
+                                + Misc.toHex(id);
+                if (field != null) {
+                    msg += " for field " + field.getName()
+                            + " (signature " + field.getSignature() + ")";
+                }
+                System.out.println(msg);
+                // Thread.dumpStack();
+            }
+            result = new HackJavaValue("Unresolved object "
+                                        + Misc.toHex(id), 0);
+        }
+        return result;
+    }
+
+    public int getSize() {
+        return 0;
+    }
+
+    public String toString() {
+        return "Unresolved object " + Misc.toHex(id);
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaShort.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Represents a short (i.e. a short field in an instance).
+ *
+ * @author      Bill Foote
+ */
+
+
+public class JavaShort extends JavaValue {
+
+    short value;
+
+    public JavaShort(short value) {
+        this.value = value;
+    }
+
+    public String toString() {
+        return "" + value;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaStatic.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ *
+ * @author      Bill Foote
+ */
+
+/**
+ * Represents the value of a static field of a JavaClass
+ */
+
+public class JavaStatic {
+
+    private JavaField field;
+    private JavaThing value;
+
+    public JavaStatic(JavaField field, JavaThing value) {
+        this.field = field;
+        this.value = value;
+    }
+
+    public void resolve(JavaClass clazz, Snapshot snapshot) {
+        long id = -1;
+        if (value instanceof JavaObjectRef) {
+            id = ((JavaObjectRef)value).getId();
+        }
+        value = value.dereference(snapshot, field);
+        if (value.isHeapAllocated() &&
+            clazz.getLoader() == snapshot.getNullThing()) {
+            // static fields are only roots if they are in classes
+            //    loaded by the root classloader.
+            JavaHeapObject ho = (JavaHeapObject) value;
+            String s = "Static reference from " + clazz.getName()
+                       + "." + field.getName();
+            snapshot.addRoot(new Root(id, clazz.getId(),
+                                      Root.JAVA_STATIC, s));
+        }
+    }
+
+    public JavaField getField() {
+        return field;
+    }
+
+    public JavaThing getValue() {
+        return value;
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaThing.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import java.util.Enumeration;
+import java.util.Hashtable;
+
+
+/**
+ *
+ * @author      Bill Foote
+ */
+
+
+/**
+ * Represents a java "Thing".  A thing is anything that can be the value of
+ * a field.  This includes JavaHeapObject, JavaObjectRef, and JavaValue.
+ */
+
+public abstract class JavaThing {
+
+    protected JavaThing() {
+    }
+
+    /**
+     * If this is a forward reference, figure out what it really
+     * refers to.
+     *
+     * @param snapshot  The snapshot this is for
+     * @param field     The field this thing represents.  If null, it is
+     *                  assumed this thing is an object (and never a value).
+     */
+    public JavaThing dereference(Snapshot shapshot, JavaField field) {
+        return this;
+    }
+
+
+    /**
+     * Are we the same type as other?
+     *
+     * @see JavaObject.isSameTypeAs()
+     */
+    public boolean isSameTypeAs(JavaThing other) {
+        return getClass() == other.getClass();
+    }
+    /**
+     * @return true iff this represents a heap-allocated object
+     */
+    abstract public boolean isHeapAllocated();
+
+    /**
+     * @return the size of this object, in bytes, including VM overhead
+     */
+    abstract public int getSize();
+
+    /**
+     * @return a human-readable string representation of this thing
+     */
+    abstract public String toString();
+
+    /**
+     * Compare our string representation to other's
+     * @see java.lang.String.compareTo()
+     */
+    public int compareTo(JavaThing other) {
+        return toString().compareTo(other.toString());
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaValue.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Abstract base class for all value types (ints, longs, floats, etc.)
+ *
+ * @author      Bill Foote
+ */
+
+
+
+
+public abstract class JavaValue extends JavaThing {
+
+    protected JavaValue() {
+    }
+
+    public boolean isHeapAllocated() {
+        return false;
+    }
+
+    abstract public String toString();
+
+    public int getSize() {
+        // The size of a value is already accounted for in the class
+        // that has the data member.
+        return 0;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/JavaValueArray.java

@@ -0,0 +1,433 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import com.sun.tools.hat.internal.parser.ReadBuffer;
+import java.io.IOException;
+
+/**
+ * An array of values, that is, an array of ints, boolean, floats or the like.
+ *
+ * @author      Bill Foote
+ */
+public class JavaValueArray extends JavaLazyReadObject
+                /*imports*/ implements ArrayTypeCodes {
+
+    private static String arrayTypeName(byte sig) {
+        switch (sig) {
+            case 'B':
+                return "byte[]";
+            case 'Z':
+                return "boolean[]";
+            case 'C':
+                return "char[]";
+            case 'S':
+                return "short[]";
+            case 'I':
+                return "int[]";
+            case 'F':
+                return "float[]";
+            case 'J':
+                return "long[]";
+            case 'D':
+                return "double[]";
+            default:
+                throw new RuntimeException("invalid array element sig: " + sig);
+        }
+    }
+
+    private static int elementSize(byte type) {
+        switch (type) {
+            case T_BYTE:
+            case T_BOOLEAN:
+                return 1;
+            case T_CHAR:
+            case T_SHORT:
+                return 2;
+            case T_INT:
+            case T_FLOAT:
+                return 4;
+            case T_LONG:
+            case T_DOUBLE:
+                return 8;
+            default:
+                throw new RuntimeException("invalid array element type: " + type);
+        }
+    }
+
+    /*
+     * Java primitive array record (HPROF_GC_PRIM_ARRAY_DUMP) looks
+     * as below:
+     *
+     *    object ID
+     *    stack trace serial number (int)
+     *    length of the instance data (int)
+     *    element type (byte)
+     *    array data
+     */
+    protected final int readValueLength() throws IOException {
+        JavaClass cl = getClazz();
+        ReadBuffer buf = cl.getReadBuffer();
+        int idSize = cl.getIdentifierSize();
+        long offset = getOffset() + idSize + 4;
+        // length of the array
+        int len = buf.getInt(offset);
+        // typecode of array element type
+        byte type = buf.getByte(offset + 4);
+        return len * elementSize(type);
+    }
+
+    protected final byte[] readValue() throws IOException {
+        JavaClass cl = getClazz();
+        ReadBuffer buf = cl.getReadBuffer();
+        int idSize = cl.getIdentifierSize();
+        long offset = getOffset() + idSize + 4;
+        // length of the array
+        int length = buf.getInt(offset);
+        // typecode of array element type
+        byte type = buf.getByte(offset + 4);
+        if (length == 0) {
+            return Snapshot.EMPTY_BYTE_ARRAY;
+        } else {
+            length *= elementSize(type);
+            byte[] res = new byte[length];
+            buf.get(offset + 5, res);
+            return res;
+        }
+    }
+
+    // JavaClass set only after resolve.
+    private JavaClass clazz;
+
+    // This field contains elementSignature byte and
+    // divider to be used to calculate length. Note that
+    // length of content byte[] is not same as array length.
+    // Actual array length is (byte[].length / divider)
+    private int data;
+
+    // First 8 bits of data is used for element signature
+    private static final int SIGNATURE_MASK = 0x0FF;
+
+    // Next 8 bits of data is used for length divider
+    private static final int LENGTH_DIVIDER_MASK = 0x0FF00;
+
+    // Number of bits to shift to get length divider
+    private static final int LENGTH_DIVIDER_SHIFT = 8;
+
+    public JavaValueArray(byte elementSignature, long offset) {
+        super(offset);
+        this.data = (elementSignature & SIGNATURE_MASK);
+    }
+
+    public JavaClass getClazz() {
+        return clazz;
+    }
+
+    public void visitReferencedObjects(JavaHeapObjectVisitor v) {
+        super.visitReferencedObjects(v);
+    }
+
+    public void resolve(Snapshot snapshot) {
+        if (clazz instanceof JavaClass) {
+            return;
+        }
+        byte elementSig = getElementType();
+        clazz = snapshot.findClass(arrayTypeName(elementSig));
+        if (clazz == null) {
+            clazz = snapshot.getArrayClass("" + ((char) elementSig));
+        }
+        getClazz().addInstance(this);
+        super.resolve(snapshot);
+    }
+
+    public int getLength() {
+        int divider = (data & LENGTH_DIVIDER_MASK) >>> LENGTH_DIVIDER_SHIFT;
+        if (divider == 0) {
+            byte elementSignature = getElementType();
+            switch (elementSignature) {
+            case 'B':
+            case 'Z':
+                divider = 1;
+                break;
+            case 'C':
+            case 'S':
+                divider = 2;
+                break;
+            case 'I':
+            case 'F':
+                divider = 4;
+                break;
+            case 'J':
+            case 'D':
+                divider = 8;
+                break;
+            default:
+                throw new RuntimeException("unknown primitive type: " +
+                                elementSignature);
+            }
+            data |= (divider << LENGTH_DIVIDER_SHIFT);
+        }
+        return (getValueLength() / divider);
+    }
+
+    public Object getElements() {
+        final int len = getLength();
+        final byte et = getElementType();
+        byte[] data = getValue();
+        int index = 0;
+        switch (et) {
+            case 'Z': {
+                boolean[] res = new boolean[len];
+                for (int i = 0; i < len; i++) {
+                    res[i] = booleanAt(index, data);
+                    index++;
+                }
+                return res;
+            }
+            case 'B': {
+                byte[] res = new byte[len];
+                for (int i = 0; i < len; i++) {
+                    res[i] = byteAt(index, data);
+                    index++;
+                }
+                return res;
+            }
+            case 'C': {
+                char[] res = new char[len];
+                for (int i = 0; i < len; i++) {
+                    res[i] = charAt(index, data);
+                    index += 2;
+                }
+                return res;
+            }
+            case 'S': {
+                short[] res = new short[len];
+                for (int i = 0; i < len; i++) {
+                    res[i] = shortAt(index, data);
+                    index += 2;
+                }
+                return res;
+            }
+            case 'I': {
+                int[] res = new int[len];
+                for (int i = 0; i < len; i++) {
+                    res[i] = intAt(index, data);
+                    index += 4;
+                }
+                return res;
+            }
+            case 'J': {
+                long[] res = new long[len];
+                for (int i = 0; i < len; i++) {
+                    res[i] = longAt(index, data);
+                    index += 8;
+                }
+                return res;
+            }
+            case 'F': {
+                float[] res = new float[len];
+                for (int i = 0; i < len; i++) {
+                    res[i] = floatAt(index, data);
+                    index += 4;
+                }
+                return res;
+            }
+            case 'D': {
+                double[] res = new double[len];
+                for (int i = 0; i < len; i++) {
+                    res[i] = doubleAt(index, data);
+                    index += 8;
+                }
+                return res;
+            }
+            default: {
+                throw new RuntimeException("unknown primitive type?");
+            }
+        }
+    }
+
+    public byte getElementType() {
+        return (byte) (data & SIGNATURE_MASK);
+    }
+
+    private void checkIndex(int index) {
+        if (index < 0 || index >= getLength()) {
+            throw new ArrayIndexOutOfBoundsException(index);
+        }
+    }
+
+    private void requireType(char type) {
+        if (getElementType() != type) {
+            throw new RuntimeException("not of type : " + type);
+        }
+    }
+
+    public boolean getBooleanAt(int index) {
+        checkIndex(index);
+        requireType('Z');
+        return booleanAt(index, getValue());
+    }
+
+    public byte getByteAt(int index) {
+        checkIndex(index);
+        requireType('B');
+        return byteAt(index, getValue());
+    }
+
+    public char getCharAt(int index) {
+        checkIndex(index);
+        requireType('C');
+        return charAt(index << 1, getValue());
+    }
+
+    public short getShortAt(int index) {
+        checkIndex(index);
+        requireType('S');
+        return shortAt(index << 1, getValue());
+    }
+
+    public int getIntAt(int index) {
+        checkIndex(index);
+        requireType('I');
+        return intAt(index << 2, getValue());
+    }
+
+    public long getLongAt(int index) {
+        checkIndex(index);
+        requireType('J');
+        return longAt(index << 3, getValue());
+    }
+
+    public float getFloatAt(int index) {
+        checkIndex(index);
+        requireType('F');
+        return floatAt(index << 2, getValue());
+    }
+
+    public double getDoubleAt(int index) {
+        checkIndex(index);
+        requireType('D');
+        return doubleAt(index << 3, getValue());
+    }
+
+    public String valueString() {
+        return valueString(true);
+    }
+
+    public String valueString(boolean bigLimit) {
+        // Char arrays deserve special treatment
+        StringBuffer result;
+        byte[] value = getValue();
+        int max = value.length;
+        byte elementSignature = getElementType();
+        if (elementSignature == 'C')  {
+            result = new StringBuffer();
+            for (int i = 0; i < value.length; ) {
+                char val = charAt(i, value);
+                result.append(val);
+                i += 2;
+            }
+        } else {
+            int limit = 8;
+            if (bigLimit) {
+                limit = 1000;
+            }
+            result = new StringBuffer("{");
+            int num = 0;
+            for (int i = 0; i < value.length; ) {
+                if (num > 0) {
+                    result.append(", ");
+                }
+                if (num >= limit) {
+                    result.append("... ");
+                    break;
+                }
+                num++;
+                switch (elementSignature) {
+                    case 'Z': {
+                        boolean val = booleanAt(i, value);
+                        if (val) {
+                            result.append("true");
+                        } else {
+                            result.append("false");
+                        }
+                        i++;
+                        break;
+                    }
+                    case 'B': {
+                        int val = 0xFF & byteAt(i, value);
+                        result.append("0x" + Integer.toString(val, 16));
+                        i++;
+                        break;
+                    }
+                    case 'S': {
+                        short val = shortAt(i, value);
+                        i += 2;
+                        result.append("" + val);
+                        break;
+                    }
+                    case 'I': {
+                        int val = intAt(i, value);
+                        i += 4;
+                        result.append("" + val);
+                        break;
+                    }
+                    case 'J': {         // long
+                        long val = longAt(i, value);
+                        result.append("" + val);
+                        i += 8;
+                        break;
+                    }
+                    case 'F': {
+                        float val = floatAt(i, value);
+                        result.append("" + val);
+                        i += 4;
+                        break;
+                    }
+                    case 'D': {         // double
+                        double val = doubleAt(i, value);
+                        result.append("" + val);
+                        i += 8;
+                        break;
+                    }
+                    default: {
+                        throw new RuntimeException("unknown primitive type?");
+                    }
+                }
+            }
+            result.append("}");
+        }
+        return result.toString();
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/ReachableExcludes.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+
+/**
+ * This represents a set of data members that should be excluded from the
+ * reachable objects query. This is useful to exclude observers from the
+ * transitive closure of objects reachable from a given object, allowing
+ * some kind of real determination of the "size" of that object.
+ *
+ */
+
+public interface ReachableExcludes {
+    /**
+     * @return true iff the given field is on the hitlist of excluded
+     *          fields.
+     */
+    public boolean isExcluded(String fieldName);
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/ReachableExcludesImpl.java

@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.io.BufferedReader;
+import java.io.IOException;
+
+import java.util.Hashtable;
+
+/**
+ * This represents a set of data members that should be excluded from the
+ * reachable objects query.
+ * This is useful to exclude observers from the
+ * transitive closure of objects reachable from a given object, allowing
+ * some kind of real determination of the "size" of that object.
+ *
+ * @author      Bill Foote
+ */
+public class ReachableExcludesImpl implements ReachableExcludes {
+
+    private File excludesFile;
+    private long lastModified;
+    private Hashtable methods;  // Hashtable<String, String>, used as a bag
+
+    /**
+     * Create a new ReachableExcludesImpl over the given file.  The file will be
+     * re-read whenever the timestamp changes.
+     */
+    public ReachableExcludesImpl(File excludesFile) {
+        this.excludesFile = excludesFile;
+        readFile();
+    }
+
+    private void readFileIfNeeded() {
+        if (excludesFile.lastModified() != lastModified) {
+            synchronized(this) {
+                if (excludesFile.lastModified() != lastModified) {
+                    readFile();
+                }
+            }
+        }
+    }
+
+    private void readFile() {
+        long lm = excludesFile.lastModified();
+        Hashtable<String, String> m = new Hashtable<String, String>();
+
+        try {
+            BufferedReader r = new BufferedReader(new InputStreamReader(
+                                    new FileInputStream(excludesFile)));
+
+            String method;
+            while ((method = r.readLine()) != null) {
+                m.put(method, method);
+            }
+            lastModified = lm;
+            methods = m;        // We want this to be atomic
+        } catch (IOException ex) {
+            System.out.println("Error reading " + excludesFile + ":  " + ex);
+        }
+    }
+
+    /**
+     * @return true iff the given field is on the histlist of excluded
+     *          fields.
+     */
+    public boolean isExcluded(String fieldName) {
+        readFileIfNeeded();
+        return methods.get(fieldName) != null;
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/ReachableObjects.java

@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import java.util.Vector;
+import java.util.Hashtable;
+import java.util.Enumeration;
+
+import com.sun.tools.hat.internal.util.ArraySorter;
+import com.sun.tools.hat.internal.util.Comparer;
+
+/**
+ * @author      A. Sundararajan
+ */
+
+public class ReachableObjects {
+    public ReachableObjects(JavaHeapObject root,
+                            final ReachableExcludes excludes) {
+        this.root = root;
+
+        final Hashtable<JavaHeapObject, JavaHeapObject> bag = new Hashtable<JavaHeapObject, JavaHeapObject>();
+        final Hashtable<String, String> fieldsExcluded = new Hashtable<String, String>();  //Bag<String>
+        final Hashtable<String, String> fieldsUsed = new Hashtable<String, String>();   // Bag<String>
+        JavaHeapObjectVisitor visitor = new AbstractJavaHeapObjectVisitor() {
+            public void visit(JavaHeapObject t) {
+                // Size is zero for things like integer fields
+                if (t != null && t.getSize() > 0 && bag.get(t) == null) {
+                    bag.put(t, t);
+                    t.visitReferencedObjects(this);
+                }
+            }
+
+            public boolean mightExclude() {
+                return excludes != null;
+            }
+
+            public boolean exclude(JavaClass clazz, JavaField f) {
+                if (excludes == null) {
+                    return false;
+                }
+                String nm = clazz.getName() + "." + f.getName();
+                if (excludes.isExcluded(nm)) {
+                    fieldsExcluded.put(nm, nm);
+                    return true;
+                } else {
+                    fieldsUsed.put(nm, nm);
+                    return false;
+                }
+            }
+        };
+        // Put the closure of root and all objects reachable from root into
+        // bag (depth first), but don't include root:
+        visitor.visit(root);
+        bag.remove(root);
+
+        // Now grab the elements into a vector, and sort it in decreasing size
+        JavaThing[] things = new JavaThing[bag.size()];
+        int i = 0;
+        for (Enumeration e = bag.elements(); e.hasMoreElements(); ) {
+            things[i++] = (JavaThing) e.nextElement();
+        }
+        ArraySorter.sort(things, new Comparer() {
+            public int compare(Object lhs, Object rhs) {
+                JavaThing left = (JavaThing) lhs;
+                JavaThing right = (JavaThing) rhs;
+                int diff = right.getSize() - left.getSize();
+                if (diff != 0) {
+                    return diff;
+                }
+                return left.compareTo(right);
+            }
+        });
+        this.reachables = things;
+
+        this.totalSize = root.getSize();
+        for (i = 0; i < things.length; i++) {
+            this.totalSize += things[i].getSize();
+        }
+
+        excludedFields = getElements(fieldsExcluded);
+        usedFields = getElements(fieldsUsed);
+    }
+
+    public JavaHeapObject getRoot() {
+        return root;
+    }
+
+    public JavaThing[] getReachables() {
+        return reachables;
+    }
+
+    public long getTotalSize() {
+        return totalSize;
+    }
+
+    public String[] getExcludedFields() {
+        return excludedFields;
+    }
+
+    public String[] getUsedFields() {
+        return usedFields;
+    }
+
+    private String[] getElements(Hashtable ht) {
+        Object[] keys = ht.keySet().toArray();
+        int len = keys.length;
+        String[] res = new String[len];
+        System.arraycopy(keys, 0, res, 0, len);
+        ArraySorter.sortArrayOfStrings(res);
+        return res;
+    }
+
+    private JavaHeapObject root;
+    private JavaThing[] reachables;
+    private String[]  excludedFields;
+    private String[]  usedFields;
+    private long totalSize;
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/ReferenceChain.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ * Represents a chain of references to some target object
+ *
+ * @author      Bill Foote
+ */
+
+public class ReferenceChain {
+
+    JavaHeapObject      obj;    // Object referred to
+    ReferenceChain      next;   // Next in chain
+
+    public ReferenceChain(JavaHeapObject obj, ReferenceChain next) {
+        this.obj = obj;
+        this.next = next;
+    }
+
+    public JavaHeapObject getObj() {
+        return obj;
+    }
+
+    public ReferenceChain getNext() {
+        return next;
+    }
+
+    public int getDepth() {
+        int count = 1;
+        ReferenceChain tmp = next;
+        while (tmp != null) {
+            count++;
+            tmp = tmp.next;
+        }
+        return count;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/Root.java

@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import com.sun.tools.hat.internal.util.Misc;
+
+/**
+ *
+ * @author      Bill Foote
+ */
+
+
+/**
+ * Represents a member of the rootset, that is, one of the objects that
+ * the GC starts from when marking reachable objects.
+ */
+
+public class Root {
+
+    private long id;            // ID of the JavaThing we refer to
+    private long refererId;     // Thread or Class responsible for this, or 0
+    private int index = -1;             // Index in Snapshot.roots
+    private int type;
+    private String description;
+    private JavaHeapObject referer = null;
+    private StackTrace stackTrace = null;
+
+    // Values for type.  Higher values are more interesting -- see getType().
+    // See also getTypeName()
+    public final static int INVALID_TYPE = 0;
+    public final static int UNKNOWN = 1;
+    public final static int SYSTEM_CLASS = 2;
+
+    public final static int NATIVE_LOCAL = 3;
+    public final static int NATIVE_STATIC = 4;
+    public final static int THREAD_BLOCK = 5;
+    public final static int BUSY_MONITOR = 6;
+    public final static int JAVA_LOCAL = 7;
+    public final static int NATIVE_STACK = 8;
+    public final static int JAVA_STATIC = 9;
+
+
+    public Root(long id, long refererId, int type, String description) {
+        this(id, refererId, type, description, null);
+    }
+
+
+    public Root(long id, long refererId, int type, String description,
+                StackTrace stackTrace) {
+        this.id = id;
+        this.refererId = refererId;
+        this.type = type;
+        this.description = description;
+        this.stackTrace = stackTrace;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getIdString() {
+        return Misc.toHex(id);
+    }
+
+    public String getDescription() {
+        if ("".equals(description)) {
+            return getTypeName() + " Reference";
+        } else {
+            return description;
+        }
+    }
+
+    /**
+     * Return type.  We guarantee that more interesting roots will have
+     * a type that is numerically higher.
+     */
+    public int getType() {
+        return type;
+    }
+
+    public String getTypeName() {
+        switch(type) {
+            case INVALID_TYPE:          return "Invalid (?!?)";
+            case UNKNOWN:               return "Unknown";
+            case SYSTEM_CLASS:          return "System Class";
+            case NATIVE_LOCAL:          return "JNI Local";
+            case NATIVE_STATIC:         return "JNI Global";
+            case THREAD_BLOCK:          return "Thread Block";
+            case BUSY_MONITOR:          return "Busy Monitor";
+            case JAVA_LOCAL:            return "Java Local";
+            case NATIVE_STACK:          return "Native Stack (possibly Java local)";
+            case JAVA_STATIC:           return "Java Static";
+            default:                    return "??";
+        }
+    }
+
+    /**
+     * Given two Root instances, return the one that is most interesting.
+     */
+    public Root mostInteresting(Root other) {
+        if (other.type > this.type) {
+            return other;
+        } else {
+            return this;
+        }
+    }
+
+    /**
+     * Get the object that's responsible for this root, if there is one.
+     * This will be null, a Thread object, or a Class object.
+     */
+    public JavaHeapObject getReferer() {
+        return referer;
+    }
+
+    /**
+     * @return the stack trace responsible for this root, or null if there
+     * is none.
+     */
+    public StackTrace getStackTrace() {
+        return stackTrace;
+    }
+
+    /**
+     * @return The index of this root in Snapshot.roots
+     */
+    public int getIndex() {
+        return index;
+    }
+
+    void resolve(Snapshot ss) {
+        if (refererId != 0) {
+            referer = ss.findThing(refererId);
+        }
+        if (stackTrace != null) {
+            stackTrace.resolve(ss);
+        }
+    }
+
+    void setIndex(int i) {
+        index = i;
+    }
+
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/Snapshot.java

@@ -0,0 +1,630 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+import java.lang.ref.SoftReference;
+import java.util.*;
+import com.sun.tools.hat.internal.parser.ReadBuffer;
+import com.sun.tools.hat.internal.util.Misc;
+
+/**
+ *
+ * @author      Bill Foote
+ */
+
+/**
+ * Represents a snapshot of the Java objects in the VM at one instant.
+ * This is the top-level "model" object read out of a single .hprof or .bod
+ * file.
+ */
+
+public class Snapshot {
+
+    public static long SMALL_ID_MASK = 0x0FFFFFFFFL;
+    public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
+
+    private static final JavaField[] EMPTY_FIELD_ARRAY = new JavaField[0];
+    private static final JavaStatic[] EMPTY_STATIC_ARRAY = new JavaStatic[0];
+
+    // all heap objects
+    private Hashtable<Number, JavaHeapObject> heapObjects =
+                 new Hashtable<Number, JavaHeapObject>();
+
+    private Hashtable<Number, JavaClass> fakeClasses =
+                 new Hashtable<Number, JavaClass>();
+
+    // all Roots in this Snapshot
+    private Vector<Root> roots = new Vector<Root>();
+
+    // name-to-class map
+    private Map<String, JavaClass> classes =
+                 new TreeMap<String, JavaClass>();
+
+    // new objects relative to a baseline - lazily initialized
+    private volatile Map<JavaHeapObject, Boolean> newObjects;
+
+    // allocation site traces for all objects - lazily initialized
+    private volatile Map<JavaHeapObject, StackTrace> siteTraces;
+
+    // object-to-Root map for all objects
+    private Map<JavaHeapObject, Root> rootsMap =
+                 new HashMap<JavaHeapObject, Root>();
+
+    // soft cache of finalizeable objects - lazily initialized
+    private SoftReference<Vector> finalizablesCache;
+
+    // represents null reference
+    private JavaThing nullThing;
+
+    // java.lang.ref.Reference class
+    private JavaClass weakReferenceClass;
+    // index of 'referent' field in java.lang.ref.Reference class
+    private int referentFieldIndex;
+
+    // java.lang.Class class
+    private JavaClass javaLangClass;
+    // java.lang.String class
+    private JavaClass javaLangString;
+    // java.lang.ClassLoader class
+    private JavaClass javaLangClassLoader;
+
+    // unknown "other" array class
+    private volatile JavaClass otherArrayType;
+    // Stuff to exclude from reachable query
+    private ReachableExcludes reachableExcludes;
+    // the underlying heap dump buffer
+    private ReadBuffer readBuf;
+
+    // True iff some heap objects have isNew set
+    private boolean hasNewSet;
+    private boolean unresolvedObjectsOK;
+
+    // whether object array instances have new style class or
+    // old style (element) class.
+    private boolean newStyleArrayClass;
+
+    // object id size in the heap dump
+    private int identifierSize = 4;
+
+    // minimum object size - accounts for object header in
+    // most Java virtual machines - we assume 2 identifierSize
+    // (which is true for Sun's hotspot JVM).
+    private int minimumObjectSize;
+
+    public Snapshot(ReadBuffer buf) {
+        nullThing = new HackJavaValue("<null>", 0);
+        readBuf = buf;
+    }
+
+    public void setSiteTrace(JavaHeapObject obj, StackTrace trace) {
+        if (trace != null && trace.getFrames().length != 0) {
+            initSiteTraces();
+            siteTraces.put(obj, trace);
+        }
+    }
+
+    public StackTrace getSiteTrace(JavaHeapObject obj) {
+        if (siteTraces != null) {
+            return siteTraces.get(obj);
+        } else {
+            return null;
+        }
+    }
+
+    public void setNewStyleArrayClass(boolean value) {
+        newStyleArrayClass = value;
+    }
+
+    public boolean isNewStyleArrayClass() {
+        return newStyleArrayClass;
+    }
+
+    public void setIdentifierSize(int size) {
+        identifierSize = size;
+        minimumObjectSize = 2 * size;
+    }
+
+    public int getIdentifierSize() {
+        return identifierSize;
+    }
+
+    public int getMinimumObjectSize() {
+        return minimumObjectSize;
+    }
+
+    public void addHeapObject(long id, JavaHeapObject ho) {
+        heapObjects.put(makeId(id), ho);
+    }
+
+    public void addRoot(Root r) {
+        r.setIndex(roots.size());
+        roots.addElement(r);
+    }
+
+    public void addClass(long id, JavaClass c) {
+        addHeapObject(id, c);
+        putInClassesMap(c);
+    }
+
+    JavaClass addFakeInstanceClass(long classID, int instSize) {
+        // Create a fake class name based on ID.
+        String name = "unknown-class<@" + Misc.toHex(classID) + ">";
+
+        // Create fake fields convering the given instance size.
+        // Create as many as int type fields and for the left over
+        // size create byte type fields.
+        int numInts = instSize / 4;
+        int numBytes = instSize % 4;
+        JavaField[] fields = new JavaField[numInts + numBytes];
+        int i;
+        for (i = 0; i < numInts; i++) {
+            fields[i] = new JavaField("unknown-field-" + i, "I");
+        }
+        for (i = 0; i < numBytes; i++) {
+            fields[i + numInts] = new JavaField("unknown-field-" +
+                                                i + numInts, "B");
+        }
+
+        // Create fake instance class
+        JavaClass c = new JavaClass(name, 0, 0, 0, 0, fields,
+                                 EMPTY_STATIC_ARRAY, instSize);
+        // Add the class
+        addFakeClass(makeId(classID), c);
+        return c;
+    }
+
+
+    /**
+     * @return true iff it's possible that some JavaThing instances might
+     *          isNew set
+     *
+     * @see JavaThing.isNew()
+     */
+    public boolean getHasNewSet() {
+        return hasNewSet;
+    }
+
+    //
+    // Used in the body of resolve()
+    //
+    private static class MyVisitor extends AbstractJavaHeapObjectVisitor {
+        JavaHeapObject t;
+        public void visit(JavaHeapObject other) {
+            other.addReferenceFrom(t);
+        }
+    }
+
+    // To show heap parsing progress, we print a '.' after this limit
+    private static final int DOT_LIMIT = 5000;
+
+    /**
+     * Called after reading complete, to initialize the structure
+     */
+    public void resolve(boolean calculateRefs) {
+        System.out.println("Resolving " + heapObjects.size() + " objects...");
+
+        // First, resolve the classes.  All classes must be resolved before
+        // we try any objects, because the objects use classes in their
+        // resolution.
+        javaLangClass = findClass("java.lang.Class");
+        if (javaLangClass == null) {
+            System.out.println("WARNING:  hprof file does not include java.lang.Class!");
+            javaLangClass = new JavaClass("java.lang.Class", 0, 0, 0, 0,
+                                 EMPTY_FIELD_ARRAY, EMPTY_STATIC_ARRAY, 0);
+            addFakeClass(javaLangClass);
+        }
+        javaLangString = findClass("java.lang.String");
+        if (javaLangString == null) {
+            System.out.println("WARNING:  hprof file does not include java.lang.String!");
+            javaLangString = new JavaClass("java.lang.String", 0, 0, 0, 0,
+                                 EMPTY_FIELD_ARRAY, EMPTY_STATIC_ARRAY, 0);
+            addFakeClass(javaLangString);
+        }
+        javaLangClassLoader = findClass("java.lang.ClassLoader");
+        if (javaLangClassLoader == null) {
+            System.out.println("WARNING:  hprof file does not include java.lang.ClassLoader!");
+            javaLangClassLoader = new JavaClass("java.lang.ClassLoader", 0, 0, 0, 0,
+                                 EMPTY_FIELD_ARRAY, EMPTY_STATIC_ARRAY, 0);
+            addFakeClass(javaLangClassLoader);
+        }
+
+        for (JavaHeapObject t : heapObjects.values()) {
+            if (t instanceof JavaClass) {
+                t.resolve(this);
+            }
+        }
+
+        // Now, resolve everything else.
+        for (JavaHeapObject t : heapObjects.values()) {
+            if (!(t instanceof JavaClass)) {
+                t.resolve(this);
+            }
+        }
+
+        heapObjects.putAll(fakeClasses);
+        fakeClasses.clear();
+
+        weakReferenceClass = findClass("java.lang.ref.Reference");
+        if (weakReferenceClass == null)  {      // JDK 1.1.x
+            weakReferenceClass = findClass("sun.misc.Ref");
+            referentFieldIndex = 0;
+        } else {
+            JavaField[] fields = weakReferenceClass.getFieldsForInstance();
+            for (int i = 0; i < fields.length; i++) {
+                if ("referent".equals(fields[i].getName())) {
+                    referentFieldIndex = i;
+                    break;
+                }
+            }
+        }
+
+        if (calculateRefs) {
+            calculateReferencesToObjects();
+            System.out.print("Eliminating duplicate references");
+            System.out.flush();
+            // This println refers to the *next* step
+        }
+        int count = 0;
+        for (JavaHeapObject t : heapObjects.values()) {
+            t.setupReferers();
+            ++count;
+            if (calculateRefs && count % DOT_LIMIT == 0) {
+                System.out.print(".");
+                System.out.flush();
+            }
+        }
+        if (calculateRefs) {
+            System.out.println("");
+        }
+
+        // to ensure that Iterator.remove() on getClasses()
+        // result will throw exception..
+        classes = Collections.unmodifiableMap(classes);
+    }
+
+    private void calculateReferencesToObjects() {
+        System.out.print("Chasing references, expect "
+                         + (heapObjects.size() / DOT_LIMIT) + " dots");
+        System.out.flush();
+        int count = 0;
+        MyVisitor visitor = new MyVisitor();
+        for (JavaHeapObject t : heapObjects.values()) {
+            visitor.t = t;
+            // call addReferenceFrom(t) on all objects t references:
+            t.visitReferencedObjects(visitor);
+            ++count;
+            if (count % DOT_LIMIT == 0) {
+                System.out.print(".");
+                System.out.flush();
+            }
+        }
+        System.out.println();
+        for (Root r : roots) {
+            r.resolve(this);
+            JavaHeapObject t = findThing(r.getId());
+            if (t != null) {
+                t.addReferenceFromRoot(r);
+            }
+        }
+    }
+
+    public void markNewRelativeTo(Snapshot baseline) {
+        hasNewSet = true;
+        for (JavaHeapObject t : heapObjects.values()) {
+            boolean isNew;
+            long thingID = t.getId();
+            if (thingID == 0L || thingID == -1L) {
+                isNew = false;
+            } else {
+                JavaThing other = baseline.findThing(t.getId());
+                if (other == null) {
+                    isNew = true;
+                } else {
+                    isNew = !t.isSameTypeAs(other);
+                }
+            }
+            t.setNew(isNew);
+        }
+    }
+
+    public Enumeration<JavaHeapObject> getThings() {
+        return heapObjects.elements();
+    }
+
+
+    public JavaHeapObject findThing(long id) {
+        Number idObj = makeId(id);
+        JavaHeapObject jho = heapObjects.get(idObj);
+        return jho != null? jho : fakeClasses.get(idObj);
+    }
+
+    public JavaHeapObject findThing(String id) {
+        return findThing(Misc.parseHex(id));
+    }
+
+    public JavaClass findClass(String name) {
+        if (name.startsWith("0x")) {
+            return (JavaClass) findThing(name);
+        } else {
+            return classes.get(name);
+        }
+    }
+
+    /**
+     * Return an Iterator of all of the classes in this snapshot.
+     **/
+    public Iterator getClasses() {
+        // note that because classes is a TreeMap
+        // classes are already sorted by name
+        return classes.values().iterator();
+    }
+
+    public JavaClass[] getClassesArray() {
+        JavaClass[] res = new JavaClass[classes.size()];
+        classes.values().toArray(res);
+        return res;
+    }
+
+    public synchronized Enumeration getFinalizerObjects() {
+        Vector obj;
+        if (finalizablesCache != null &&
+            (obj = finalizablesCache.get()) != null) {
+            return obj.elements();
+        }
+
+        JavaClass clazz = findClass("java.lang.ref.Finalizer");
+        JavaObject queue = (JavaObject) clazz.getStaticField("queue");
+        JavaThing tmp = queue.getField("head");
+        Vector<JavaHeapObject> finalizables = new Vector<JavaHeapObject>();
+        if (tmp != getNullThing()) {
+            JavaObject head = (JavaObject) tmp;
+            while (true) {
+                JavaHeapObject referent = (JavaHeapObject) head.getField("referent");
+                JavaThing next = head.getField("next");
+                if (next == getNullThing() || next.equals(head)) {
+                    break;
+                }
+                head = (JavaObject) next;
+                finalizables.add(referent);
+            }
+        }
+        finalizablesCache = new SoftReference<Vector>(finalizables);
+        return finalizables.elements();
+    }
+
+    public Enumeration<Root> getRoots() {
+        return roots.elements();
+    }
+
+    public Root[] getRootsArray() {
+        Root[] res = new Root[roots.size()];
+        roots.toArray(res);
+        return res;
+    }
+
+    public Root getRootAt(int i) {
+        return roots.elementAt(i);
+    }
+
+    public ReferenceChain[]
+    rootsetReferencesTo(JavaHeapObject target, boolean includeWeak) {
+        Vector<ReferenceChain> fifo = new Vector<ReferenceChain>();  // This is slow... A real fifo would help
+            // Must be a fifo to go breadth-first
+        Hashtable<JavaHeapObject, JavaHeapObject> visited = new Hashtable<JavaHeapObject, JavaHeapObject>();
+        // Objects are added here right after being added to fifo.
+        Vector<ReferenceChain> result = new Vector<ReferenceChain>();
+        visited.put(target, target);
+        fifo.addElement(new ReferenceChain(target, null));
+
+        while (fifo.size() > 0) {
+            ReferenceChain chain = fifo.elementAt(0);
+            fifo.removeElementAt(0);
+            JavaHeapObject curr = chain.getObj();
+            if (curr.getRoot() != null) {
+                result.addElement(chain);
+                // Even though curr is in the rootset, we want to explore its
+                // referers, because they might be more interesting.
+            }
+            Enumeration referers = curr.getReferers();
+            while (referers.hasMoreElements()) {
+                JavaHeapObject t = (JavaHeapObject) referers.nextElement();
+                if (t != null && !visited.containsKey(t)) {
+                    if (includeWeak || !t.refersOnlyWeaklyTo(this, curr)) {
+                        visited.put(t, t);
+                        fifo.addElement(new ReferenceChain(t, chain));
+                    }
+                }
+            }
+        }
+
+        ReferenceChain[] realResult = new ReferenceChain[result.size()];
+        for (int i = 0; i < result.size(); i++) {
+            realResult[i] =  result.elementAt(i);
+        }
+        return realResult;
+    }
+
+    public boolean getUnresolvedObjectsOK() {
+        return unresolvedObjectsOK;
+    }
+
+    public void setUnresolvedObjectsOK(boolean v) {
+        unresolvedObjectsOK = v;
+    }
+
+    public JavaClass getWeakReferenceClass() {
+        return weakReferenceClass;
+    }
+
+    public int getReferentFieldIndex() {
+        return referentFieldIndex;
+    }
+
+    public JavaThing getNullThing() {
+        return nullThing;
+    }
+
+    public void setReachableExcludes(ReachableExcludes e) {
+        reachableExcludes = e;
+    }
+
+    public ReachableExcludes getReachableExcludes() {
+        return reachableExcludes;
+    }
+
+    // package privates
+    void addReferenceFromRoot(Root r, JavaHeapObject obj) {
+        Root root = rootsMap.get(obj);
+        if (root == null) {
+            rootsMap.put(obj, r);
+        } else {
+            rootsMap.put(obj, root.mostInteresting(r));
+        }
+    }
+
+    Root getRoot(JavaHeapObject obj) {
+        return rootsMap.get(obj);
+    }
+
+    JavaClass getJavaLangClass() {
+        return javaLangClass;
+    }
+
+    JavaClass getJavaLangString() {
+        return javaLangString;
+    }
+
+    JavaClass getJavaLangClassLoader() {
+        return javaLangClassLoader;
+    }
+
+    JavaClass getOtherArrayType() {
+        if (otherArrayType == null) {
+            synchronized(this) {
+                if (otherArrayType == null) {
+                    addFakeClass(new JavaClass("[<other>", 0, 0, 0, 0,
+                                     EMPTY_FIELD_ARRAY, EMPTY_STATIC_ARRAY,
+                                     0));
+                    otherArrayType = findClass("[<other>");
+                }
+            }
+        }
+        return otherArrayType;
+    }
+
+    JavaClass getArrayClass(String elementSignature) {
+        JavaClass clazz;
+        synchronized(classes) {
+            clazz = findClass("[" + elementSignature);
+            if (clazz == null) {
+                clazz = new JavaClass("[" + elementSignature, 0, 0, 0, 0,
+                                   EMPTY_FIELD_ARRAY, EMPTY_STATIC_ARRAY, 0);
+                addFakeClass(clazz);
+                // This is needed because the JDK only creates Class structures
+                // for array element types, not the arrays themselves.  For
+                // analysis, though, we need to pretend that there's a
+                // JavaClass for the array type, too.
+            }
+        }
+        return clazz;
+    }
+
+    ReadBuffer getReadBuffer() {
+        return readBuf;
+    }
+
+    void setNew(JavaHeapObject obj, boolean isNew) {
+        initNewObjects();
+        if (isNew) {
+            newObjects.put(obj, Boolean.TRUE);
+        }
+    }
+
+    boolean isNew(JavaHeapObject obj) {
+        if (newObjects != null) {
+            return newObjects.get(obj) != null;
+        } else {
+            return false;
+        }
+    }
+
+    // Internals only below this point
+    private Number makeId(long id) {
+        if (identifierSize == 4) {
+            return new Integer((int)id);
+        } else {
+            return new Long(id);
+        }
+    }
+
+    private void putInClassesMap(JavaClass c) {
+        String name = c.getName();
+        if (classes.containsKey(name)) {
+            // more than one class can have the same name
+            // if so, create a unique name by appending
+            // - and id string to it.
+            name += "-" + c.getIdString();
+        }
+        classes.put(c.getName(), c);
+    }
+
+    private void addFakeClass(JavaClass c) {
+        putInClassesMap(c);
+        c.resolve(this);
+    }
+
+    private void addFakeClass(Number id, JavaClass c) {
+        fakeClasses.put(id, c);
+        addFakeClass(c);
+    }
+
+    private synchronized void initNewObjects() {
+        if (newObjects == null) {
+            synchronized (this) {
+                if (newObjects == null) {
+                    newObjects = new HashMap<JavaHeapObject, Boolean>();
+                }
+            }
+        }
+    }
+
+    private synchronized void initSiteTraces() {
+        if (siteTraces == null) {
+            synchronized (this) {
+                if (siteTraces == null) {
+                    siteTraces = new HashMap<JavaHeapObject, StackTrace>();
+                }
+            }
+        }
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/StackFrame.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ *
+ * @author      Bill Foote
+ */
+
+
+/**
+ * Represents a stack frame.
+ */
+
+public class StackFrame {
+
+    //
+    // Values for the lineNumber data member.  These are the same
+    // as the values used in the JDK 1.2 heap dump file.
+    //
+    public final static int LINE_NUMBER_UNKNOWN = -1;
+    public final static int LINE_NUMBER_COMPILED = -2;
+    public final static int LINE_NUMBER_NATIVE = -3;
+
+    private String methodName;
+    private String methodSignature;
+    private String className;
+    private String sourceFileName;
+    private int lineNumber;
+
+    public StackFrame(String methodName, String methodSignature,
+                      String className, String sourceFileName, int lineNumber) {
+        this.methodName = methodName;
+        this.methodSignature = methodSignature;
+        this.className = className;
+        this.sourceFileName = sourceFileName;
+        this.lineNumber = lineNumber;
+    }
+
+    public void resolve(Snapshot snapshot) {
+    }
+
+    public String getMethodName() {
+        return methodName;
+    }
+
+    public String getMethodSignature() {
+        return methodSignature;
+    }
+
+    public String getClassName() {
+        return className;
+    }
+
+    public String getSourceFileName() {
+        return sourceFileName;
+    }
+
+    public String getLineNumber() {
+        switch(lineNumber) {
+            case LINE_NUMBER_UNKNOWN:
+                return "(unknown)";
+            case LINE_NUMBER_COMPILED:
+                return "(compiled method)";
+            case LINE_NUMBER_NATIVE:
+                return "(native method)";
+            default:
+                return Integer.toString(lineNumber, 10);
+        }
+    }
+}

jdkSrc/jdk8/com/sun/tools/hat/internal/model/StackTrace.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package com.sun.tools.hat.internal.model;
+
+/**
+ *
+ * @author      Bill Foote
+ */
+
+
+/**
+ * Represents a stack trace, that is, an ordered collection of stack frames.
+ */
+
+public class StackTrace {
+
+    private StackFrame[] frames;
+
+    public StackTrace(StackFrame[] frames) {
+        this.frames = frames;
+    }
+
+    /**
+     * @param depth.  The minimum reasonable depth is 1.
+     *
+     * @return a (possibly new) StackTrace that is limited to depth.
+     */
+    public StackTrace traceForDepth(int depth) {
+        if (depth >= frames.length) {
+            return this;
+        } else {
+            StackFrame[] f = new StackFrame[depth];
+            System.arraycopy(frames, 0, f, 0, depth);
+            return new StackTrace(f);
+        }
+    }
+
+    public void resolve(Snapshot snapshot) {
+        for (int i = 0; i < frames.length; i++) {
+            frames[i].resolve(snapshot);
+        }
+    }
+
+    public StackFrame[] getFrames() {
+        return frames;
+    }
+}