author | xdono |
Wed, 02 Jul 2008 12:55:45 -0700 | |
changeset 715 | f16baef3a20e |
parent 468 | 642c8c0be52e |
child 5506 | 202f599c92aa |
permissions | -rw-r--r-- |
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/* |
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* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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/* |
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* The Original Code is HAT. The Initial Developer of the |
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* Original Code is Bill Foote, with contributions from others |
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468
642c8c0be52e
6695553: Cleanup GPLv2+SPL legal notices in hat sources
ohair
parents:
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diff
changeset
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* at JavaSoft/Sun. |
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*/ |
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package com.sun.tools.hat.internal.model; |
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import java.util.Vector; |
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import java.util.Hashtable; |
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import java.util.Enumeration; |
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import com.sun.tools.hat.internal.util.ArraySorter; |
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import com.sun.tools.hat.internal.util.Comparer; |
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/** |
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* @author A. Sundararajan |
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*/ |
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public class ReachableObjects { |
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public ReachableObjects(JavaHeapObject root, |
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final ReachableExcludes excludes) { |
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this.root = root; |
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final Hashtable<JavaHeapObject, JavaHeapObject> bag = new Hashtable<JavaHeapObject, JavaHeapObject>(); |
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final Hashtable<String, String> fieldsExcluded = new Hashtable<String, String>(); //Bag<String> |
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final Hashtable<String, String> fieldsUsed = new Hashtable<String, String>(); // Bag<String> |
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JavaHeapObjectVisitor visitor = new AbstractJavaHeapObjectVisitor() { |
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public void visit(JavaHeapObject t) { |
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// Size is zero for things like integer fields |
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if (t != null && t.getSize() > 0 && bag.get(t) == null) { |
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bag.put(t, t); |
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t.visitReferencedObjects(this); |
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} |
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} |
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public boolean mightExclude() { |
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return excludes != null; |
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} |
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public boolean exclude(JavaClass clazz, JavaField f) { |
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if (excludes == null) { |
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return false; |
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} |
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String nm = clazz.getName() + "." + f.getName(); |
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if (excludes.isExcluded(nm)) { |
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fieldsExcluded.put(nm, nm); |
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return true; |
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} else { |
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fieldsUsed.put(nm, nm); |
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return false; |
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} |
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} |
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}; |
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// Put the closure of root and all objects reachable from root into |
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// bag (depth first), but don't include root: |
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visitor.visit(root); |
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bag.remove(root); |
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// Now grab the elements into a vector, and sort it in decreasing size |
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JavaThing[] things = new JavaThing[bag.size()]; |
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int i = 0; |
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for (Enumeration e = bag.elements(); e.hasMoreElements(); ) { |
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things[i++] = (JavaThing) e.nextElement(); |
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} |
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ArraySorter.sort(things, new Comparer() { |
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public int compare(Object lhs, Object rhs) { |
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JavaThing left = (JavaThing) lhs; |
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JavaThing right = (JavaThing) rhs; |
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int diff = right.getSize() - left.getSize(); |
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if (diff != 0) { |
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return diff; |
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} |
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return left.compareTo(right); |
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} |
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}); |
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this.reachables = things; |
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this.totalSize = root.getSize(); |
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for (i = 0; i < things.length; i++) { |
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this.totalSize += things[i].getSize(); |
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} |
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excludedFields = getElements(fieldsExcluded); |
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usedFields = getElements(fieldsUsed); |
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} |
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public JavaHeapObject getRoot() { |
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return root; |
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} |
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public JavaThing[] getReachables() { |
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return reachables; |
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} |
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public long getTotalSize() { |
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return totalSize; |
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} |
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public String[] getExcludedFields() { |
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return excludedFields; |
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} |
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public String[] getUsedFields() { |
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return usedFields; |
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} |
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private String[] getElements(Hashtable ht) { |
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Object[] keys = ht.keySet().toArray(); |
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int len = keys.length; |
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String[] res = new String[len]; |
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System.arraycopy(keys, 0, res, 0, len); |
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ArraySorter.sortArrayOfStrings(res); |
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return res; |
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} |
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private JavaHeapObject root; |
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private JavaThing[] reachables; |
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private String[] excludedFields; |
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private String[] usedFields; |
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private long totalSize; |
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} |