| /******************************************************************************* |
| * Copyright (c) 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.equinox.p2.garbagecollector; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.equinox.internal.p2.core.helpers.LogHelper; |
| import org.eclipse.equinox.p2.artifact.repository.IArtifactRepository; |
| import org.eclipse.equinox.p2.metadata.IArtifactKey; |
| |
| /** |
| * Given a MarkSet, the CoreGarbageCollector removes any IArtifactDescriptors which |
| * are not mapped to be an IArtifactKey in the MarkSet. |
| */ |
| public class CoreGarbageCollector { |
| |
| /** |
| * When set to true, information will be logged every time an artifact is removed |
| */ |
| private static boolean debugMode = false; |
| |
| private CoreGarbageCollector() { |
| //empty constructor |
| } |
| |
| /** |
| * Public API. Run the Garbage Collector on the given MarkSet |
| * @param inRootSet the MarkSet on which a garbage collection is to be run |
| */ |
| public static void cleanRootSet(MarkSet inRootSet) { |
| new CoreGarbageCollector().clean(inRootSet.getKeys(), inRootSet.getRepo()); |
| } |
| |
| /** |
| * Given a list of IArtifactKeys and an IArtifactRepository, removes all artifacts |
| * in aRepository that are not mapped to by an IArtifactKey in rootSet |
| */ |
| public synchronized void clean(IArtifactKey[] rootSet, IArtifactRepository aRepository) { |
| IArtifactKey[] repositoryKeys = aRepository.getArtifactKeys(); |
| for (int j = 0; j < repositoryKeys.length; j++) { |
| boolean artifactIsActive = false; |
| for (int k = 0; k < rootSet.length; k++) { |
| if (repositoryKeys[j].equals(rootSet[k])) { |
| artifactIsActive = true; |
| break; |
| } |
| } |
| if (!artifactIsActive) { |
| aRepository.removeDescriptor(repositoryKeys[j]); |
| if (debugMode) { |
| LogHelper.log(new Status(IStatus.INFO, GCActivator.ID, Messages.CoreGarbageCollector_0 + repositoryKeys[j])); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Convenience method. Sets debugMode to true then calls clean() |
| */ |
| public static void cleanRootSetWithInfo(MarkSet inRootSet) { |
| setDebugMode(true); |
| new CoreGarbageCollector().clean(inRootSet.getKeys(), inRootSet.getRepo()); |
| } |
| |
| /** |
| * If set to true, debug mode will log information about each artifact deleted by the CoreGarbageCollector |
| * @param inDebugMode |
| */ |
| public static void setDebugMode(boolean inDebugMode) { |
| if (inDebugMode) { |
| LogHelper.log(new Status(Status.INFO, GCActivator.ID, Messages.CoreGarbageCollector_1)); |
| } |
| debugMode = inDebugMode; |
| } |
| |
| } |