1 /* 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.management; 27 import javax.management.openmbean.CompositeData; 28 import javax.management.openmbean.CompositeType; 29 30 /** 31 * Platform-specific management interface for a garbage collector 32 * which performs collections in cycles. 33 * 34 * <p> This platform extension is only available to the garbage 35 * collection implementation that supports this extension. 36 * 37 * @author Mandy Chung 38 * @since 1.5 39 */ 40 public interface GarbageCollectorMXBean 41 extends java.lang.management.GarbageCollectorMXBean { 42 43 /** 44 * Returns the GC information about the most recent GC. 45 * This method returns a {@link GcInfo}. 46 * If no GC information is available, {@code null} is returned. 47 * The collector-specific attributes, if any, can be obtained 48 * via the {@link CompositeData CompositeData} interface. 49 * <p> 50 * <b>MBeanServer access:</b> 51 * The mapped type of {@code GcInfo} is {@code CompositeData} 52 * with attributes specified in {@link GcInfo#from GcInfo}. 53 * 54 * @return a {@code GcInfo} object representing 55 * the most GC information; or {@code null} if no GC 56 * information available. 57 */ getLastGcInfo()58 public GcInfo getLastGcInfo(); 59 } 60