--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/platform35/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/DelayedSnapshotJob.java	Thu Jul 30 11:56:23 2009 -0500
@@ -0,0 +1,52 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 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.core.internal.resources;
+
+import org.eclipse.core.internal.utils.Messages;
+import org.eclipse.core.internal.utils.Policy;
+import org.eclipse.core.resources.ISaveContext;
+import org.eclipse.core.resources.ResourcesPlugin;
+import org.eclipse.core.runtime.*;
+import org.eclipse.core.runtime.jobs.Job;
+
+/**
+ * Performs periodic saving (snapshot) of the workspace.
+ */
+public class DelayedSnapshotJob extends Job {
+
+	private static final String MSG_SNAPSHOT = Messages.resources_snapshot;
+	private SaveManager saveManager;
+
+	public DelayedSnapshotJob(SaveManager manager) {
+		super(MSG_SNAPSHOT);
+		this.saveManager = manager;
+		setRule(ResourcesPlugin.getWorkspace().getRoot());
+		setSystem(true);
+	}
+
+	/*
+	 * @see Job#run()
+	 */
+	public IStatus run(IProgressMonitor monitor) {
+		if (monitor.isCanceled())
+			return Status.CANCEL_STATUS;
+		if (ResourcesPlugin.getWorkspace() == null)
+			return Status.OK_STATUS;
+		try {
+			return saveManager.save(ISaveContext.SNAPSHOT, null, Policy.monitorFor(null));
+		} catch (CoreException e) {
+			return e.getStatus();
+		} finally {
+			saveManager.operationCount = 0;
+			saveManager.snapshotRequested = false;
+		}
+	}
+}