Mercurial > hg > release > thermostat-1.2
view vm-heap-analysis/command/src/main/java/com/redhat/thermostat/vm/heap/analysis/command/internal/FindRootCommand.java @ 1660:c6ae78b6f3ac
[Thermostat 1.2] Update copyright year to 2015
Reviewed-by: omajid
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2015-March/013127.html
PR2273
author | Severin Gehwolf <sgehwolf@redhat.com> |
---|---|
date | Wed, 11 Mar 2015 15:07:27 +0100 |
parents | de5f72a3381a |
children |
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/* * Copyright 2012-2015 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat 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 for more details. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.vm.heap.analysis.command.internal; import java.io.PrintStream; import java.util.Collection; import java.util.Iterator; import org.osgi.framework.BundleContext; import org.osgi.framework.FrameworkUtil; import org.osgi.framework.ServiceReference; import com.redhat.thermostat.common.cli.AbstractCommand; import com.redhat.thermostat.common.cli.CommandContext; import com.redhat.thermostat.common.cli.CommandException; import com.redhat.thermostat.shared.locale.Translate; import com.redhat.thermostat.vm.heap.analysis.command.FindRoot; import com.redhat.thermostat.vm.heap.analysis.command.HeapPath; import com.redhat.thermostat.vm.heap.analysis.command.locale.LocaleResources; import com.redhat.thermostat.vm.heap.analysis.common.HeapDAO; import com.redhat.thermostat.vm.heap.analysis.common.HeapDump; import com.sun.tools.hat.internal.model.JavaHeapObject; import com.sun.tools.hat.internal.model.Root; import com.sun.tools.hat.internal.model.Snapshot; public class FindRootCommand extends AbstractCommand { private static final Translate<LocaleResources> translator = LocaleResources.createLocalizer(); private static final String ALL_ARG = "all"; private BundleContext context; public FindRootCommand() { this(FrameworkUtil.getBundle(FindRootCommand.class).getBundleContext()); } FindRootCommand(BundleContext context) { this.context = context; } @Override public void run(CommandContext ctx) throws CommandException { ServiceReference heapDaoRef = context.getServiceReference(HeapDAO.class.getName()); requireNonNull(heapDaoRef, translator.localize(LocaleResources.HEAP_SERVICE_UNAVAILABLE)); HeapDAO heapDao = (HeapDAO) context.getService(heapDaoRef); try { run(ctx, heapDao); } finally { context.ungetService(heapDaoRef); } } private void run(CommandContext ctx, HeapDAO heapDao) throws CommandException { ObjectCommandHelper objCmdHelper = new ObjectCommandHelper(ctx, heapDao); HeapDump heapDump = objCmdHelper.getHeapDump(); Snapshot snapshot = heapDump.getSnapshot(); JavaHeapObject obj = objCmdHelper.getJavaHeapObject(); boolean findAll = ctx.getArguments().hasArgument(ALL_ARG); FindRoot findRoot = new FindRoot(); Collection<HeapPath<JavaHeapObject>> pathsToRoot = findRoot.findShortestPathsToRoot(obj, findAll); PrintStream out = ctx.getConsole().getOutput(); if (pathsToRoot.isEmpty()) { out.println(translator.localize(LocaleResources.COMMAND_FIND_ROOT_NO_ROOT_FOUND, PrintObjectUtils.objectToString(obj)).getContents()); } else { printPathsToRoot(snapshot, pathsToRoot, out); } } private void printPathsToRoot(Snapshot snapshot, Collection<HeapPath<JavaHeapObject>> pathsToRoot, PrintStream out) { for (HeapPath<JavaHeapObject> path : pathsToRoot) { printPathToRoot(snapshot, path, out); out.println(); } } private void printPathToRoot(Snapshot snapshot, HeapPath<JavaHeapObject> pathToRoot, PrintStream out) { // Print root. Iterator<JavaHeapObject> i = pathToRoot.iterator(); JavaHeapObject last = i.next(); Root root = last.getRoot(); out.println(root.getDescription() + " -> " + PrintObjectUtils.objectToString(last)); // Print reference 'tree'. int indentation = 0; while (i.hasNext()) { JavaHeapObject next = i.next(); printIndentation(out, indentation); out.print("\u2514"); out.print(last.describeReferenceTo(next, snapshot)); out.print(" in "); out.print(PrintObjectUtils.objectToString(last)); out.print(" -> "); out.println(PrintObjectUtils.objectToString(next)); last = next; indentation++; } } private void printIndentation(PrintStream out, int indentation) { for (int i = 0; i < indentation; i++) { out.print(" "); } } }