/* * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.management; import java.lang.management.MemoryUsage; import javax.management.openmbean.CompositeData; import javax.management.openmbean.CompositeDataView; import javax.management.openmbean.CompositeType; import java.util.Collection; import java.util.Collections; import java.util.HashMap; import java.util.Map; import java.util.List; import sun.management.GcInfoCompositeData; import sun.management.GcInfoBuilder; /** * Garbage collection information. It contains the following * information for one garbage collection as well as GC-specific * attributes: *
** **
*- Start time
*- End time
*- Duration
*- Memory usage before the collection starts
*- Memory usage after the collection ends
*
* {@code GcInfo} is a {@link CompositeData CompositeData} * The GC-specific attributes can be obtained via the CompositeData * interface. This is a historical relic, and other classes should * not copy this pattern. Use {@link CompositeDataView} instead. * *
** * @throws IllegalArgumentException if {@code cd} does not * represent a {@code GcInfo} object with the attributes * described above. * * @return a {@code GcInfo} object represented by {@code cd} * if {@code cd} is not {@code null}; {@code null} otherwise. */ public static GcInfo from(CompositeData cd) { if (cd == null) { return null; } if (cd instanceof GcInfoCompositeData) { return ((GcInfoCompositeData) cd).getGcInfo(); } else { return new GcInfo(cd); } } // Implementation of the CompositeData interface public boolean containsKey(String key) { return cdata.containsKey(key); } public boolean containsValue(Object value) { return cdata.containsValue(value); } public boolean equals(Object obj) { return cdata.equals(obj); } public Object get(String key) { return cdata.get(key); } public Object[] getAll(String[] keys) { return cdata.getAll(keys); } public CompositeType getCompositeType() { return cdata.getCompositeType(); } public int hashCode() { return cdata.hashCode(); } public String toString() { return cdata.toString(); } public Collection> values() { return cdata.values(); } /** * Return the {@code CompositeData} representation of this * {@code GcInfo}, including any GC-specific attributes. The * returned value will have at least all the attributes described * in the {@link #from(CompositeData) from} method, plus optionally * other attributes. * * @param ct the {@code CompositeType} that the caller expects. * This parameter is ignored and can be null. * * @return the {@code CompositeData} representation. */ public CompositeData toCompositeData(CompositeType ct) { return cdata; } }*
** *Attribute Name *Type ** *index *{@code java.lang.Long} ** *startTime *{@code java.lang.Long} ** *endTime *{@code java.lang.Long} ** *memoryUsageBeforeGc *{@code javax.management.openmbean.TabularData} ** *memoryUsageAfterGc *{@code javax.management.openmbean.TabularData} *