01: /*
02: * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package com.sun.management;
27:
28: import javax.management.openmbean.CompositeData;
29: import javax.management.openmbean.CompositeType;
30:
31: /**
32: * Platform-specific management interface for a garbage collector
33: * which performs collections in cycles.
34: *
35: * <p> This platform extension is only available to the garbage
36: * collection implementation that supports this extension.
37: *
38: * @author Mandy Chung
39: * @version 1.13, 05/05/07
40: * @since 1.5
41: */
42: public interface GarbageCollectorMXBean extends
43: java.lang.management.GarbageCollectorMXBean {
44:
45: /**
46: * Returns the GC information about the most recent GC.
47: * This method returns a {@link GcInfo}.
48: * If no GC information is available, <tt>null</tt> is returned.
49: * The collector-specific attributes, if any, can be obtained
50: * via the {@link CompositeData CompositeData} interface.
51: * <p>
52: * <b>MBeanServer access:</b>
53: * The mapped type of <tt>GcInfo</tt> is <tt>CompositeData</tt>
54: * with attributes specified in {@link GcInfo#from GcInfo}.
55: *
56: * @return a <tt>GcInfo</tt> object representing
57: * the most GC information; or <tt>null</tt> if no GC
58: * information available.
59: */
60: public GcInfo getLastGcInfo();
61: }
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