| /* |
| * 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.server; |
| |
| import java.util.Vector; |
| |
| import com.sun.tools.hat.internal.model.*; |
| import com.sun.tools.hat.internal.util.ArraySorter; |
| import com.sun.tools.hat.internal.util.Comparer; |
| |
| /** |
| * |
| * @author Bill Foote |
| */ |
| |
| |
| class RootsQuery extends QueryHandler { |
| |
| private boolean includeWeak; |
| |
| public RootsQuery(boolean includeWeak) { |
| this.includeWeak = includeWeak; |
| } |
| |
| public void run() { |
| long id = parseHex(query); |
| JavaHeapObject target = snapshot.findThing(id); |
| if (target == null) { |
| startHtml("Object not found for rootset"); |
| error("object not found"); |
| endHtml(); |
| return; |
| } |
| if (includeWeak) { |
| startHtml("Rootset references to " + target |
| + " (includes weak refs)"); |
| } else { |
| startHtml("Rootset references to " + target |
| + " (excludes weak refs)"); |
| } |
| out.flush(); |
| |
| ReferenceChain[] refs |
| = snapshot.rootsetReferencesTo(target, includeWeak); |
| ArraySorter.sort(refs, new Comparer() { |
| public int compare(Object lhs, Object rhs) { |
| ReferenceChain left = (ReferenceChain) lhs; |
| ReferenceChain right = (ReferenceChain) rhs; |
| Root leftR = left.getObj().getRoot(); |
| Root rightR = right.getObj().getRoot(); |
| int d = leftR.getType() - rightR.getType(); |
| if (d != 0) { |
| return -d; // More interesting values are *higher* |
| } |
| return left.getDepth() - right.getDepth(); |
| } |
| }); |
| |
| out.print("<h1>References to "); |
| printThing(target); |
| out.println("</h1>"); |
| int lastType = Root.INVALID_TYPE; |
| for (int i= 0; i < refs.length; i++) { |
| ReferenceChain ref = refs[i]; |
| Root root = ref.getObj().getRoot(); |
| if (root.getType() != lastType) { |
| lastType = root.getType(); |
| out.print("<h2>"); |
| print(root.getTypeName() + " References"); |
| out.println("</h2>"); |
| } |
| out.print("<h3>"); |
| printRoot(root); |
| if (root.getReferer() != null) { |
| out.print("<small> (from "); |
| printThingAnchorTag(root.getReferer().getId()); |
| print(root.getReferer().toString()); |
| out.print(")</a></small>"); |
| |
| } |
| out.print(" :</h3>"); |
| while (ref != null) { |
| ReferenceChain next = ref.getNext(); |
| JavaHeapObject obj = ref.getObj(); |
| print("--> "); |
| printThing(obj); |
| if (next != null) { |
| print(" (" + |
| obj.describeReferenceTo(next.getObj(), snapshot) |
| + ":)"); |
| } |
| out.println("<br>"); |
| ref = next; |
| } |
| } |
| |
| out.println("<h2>Other queries</h2>"); |
| |
| if (includeWeak) { |
| printAnchorStart(); |
| out.print("roots/"); |
| printHex(id); |
| out.print("\">"); |
| out.println("Exclude weak refs</a><br>"); |
| endHtml(); |
| } |
| |
| if (!includeWeak) { |
| printAnchorStart(); |
| out.print("allRoots/"); |
| printHex(id); |
| out.print("\">"); |
| out.println("Include weak refs</a><br>"); |
| } |
| } |
| |
| } |