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 @jdk.Exported

    41 public interface GarbageCollectorMXBean

    42     extends java.lang.management.GarbageCollectorMXBean {

    43 

    44     /**

    45      * Returns the GC information about the most recent GC.

    46      * This method returns a {@link GcInfo}.

    47      * If no GC information is available, <tt>null</tt> is returned.

    48      * The collector-specific attributes, if any, can be obtained

    49      * via the {@link CompositeData CompositeData} interface.

    50      * <p>

    51      * <b>MBeanServer access:</b>

    52      * The mapped type of <tt>GcInfo</tt> is <tt>CompositeData</tt>

    53      * with attributes specified in {@link GcInfo#from GcInfo}.

    54      *

    55      * @return a <tt>GcInfo</tt> object representing

    56      * the most GC information; or <tt>null</tt> if no GC

    57      * information available.

    58      */

    59     public GcInfo getLastGcInfo();

    60 }