J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * 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 sun.management; |
| 27 | |
| 28 | import java.lang.management.MemoryNotificationInfo; |
| 29 | import java.lang.management.MemoryUsage; |
| 30 | import javax.management.openmbean.CompositeData; |
| 31 | import javax.management.openmbean.CompositeType; |
| 32 | import javax.management.openmbean.CompositeDataSupport; |
| 33 | import javax.management.openmbean.OpenDataException; |
| 34 | |
| 35 | /** |
| 36 | * A CompositeData for MemoryNotificationInfo for the local management support. |
| 37 | * This class avoids the performance penalty paid to the |
| 38 | * construction of a CompositeData use in the local case. |
| 39 | */ |
| 40 | public class MemoryNotifInfoCompositeData extends LazyCompositeData { |
| 41 | private final MemoryNotificationInfo memoryNotifInfo; |
| 42 | |
| 43 | private MemoryNotifInfoCompositeData(MemoryNotificationInfo info) { |
| 44 | this.memoryNotifInfo = info; |
| 45 | } |
| 46 | |
| 47 | public MemoryNotificationInfo getMemoryNotifInfo() { |
| 48 | return memoryNotifInfo; |
| 49 | } |
| 50 | |
| 51 | public static CompositeData toCompositeData(MemoryNotificationInfo info) { |
| 52 | MemoryNotifInfoCompositeData mnicd = |
| 53 | new MemoryNotifInfoCompositeData(info); |
| 54 | return mnicd.getCompositeData(); |
| 55 | } |
| 56 | |
| 57 | protected CompositeData getCompositeData() { |
| 58 | // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH |
| 59 | // memoryNotifInfoItemNames! |
| 60 | final Object[] memoryNotifInfoItemValues = { |
| 61 | memoryNotifInfo.getPoolName(), |
| 62 | MemoryUsageCompositeData.toCompositeData(memoryNotifInfo.getUsage()), |
| 63 | new Long(memoryNotifInfo.getCount()), |
| 64 | }; |
| 65 | |
| 66 | try { |
| 67 | return new CompositeDataSupport(memoryNotifInfoCompositeType, |
| 68 | memoryNotifInfoItemNames, |
| 69 | memoryNotifInfoItemValues); |
| 70 | } catch (OpenDataException e) { |
| 71 | // Should never reach here |
| 72 | throw Util.newInternalError(e); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | private static final CompositeType memoryNotifInfoCompositeType; |
| 77 | static { |
| 78 | try { |
| 79 | memoryNotifInfoCompositeType = (CompositeType) |
| 80 | MappedMXBeanType.toOpenType(MemoryNotificationInfo.class); |
| 81 | } catch (OpenDataException e) { |
| 82 | // Should never reach here |
| 83 | throw Util.newInternalError(e); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | private static final String POOL_NAME = "poolName"; |
| 88 | private static final String USAGE = "usage"; |
| 89 | private static final String COUNT = "count"; |
| 90 | private static final String[] memoryNotifInfoItemNames = { |
| 91 | POOL_NAME, |
| 92 | USAGE, |
| 93 | COUNT, |
| 94 | }; |
| 95 | |
| 96 | |
| 97 | public static String getPoolName(CompositeData cd) { |
| 98 | String poolname = getString(cd, POOL_NAME); |
| 99 | if (poolname == null) { |
| 100 | throw new IllegalArgumentException("Invalid composite data: " + |
| 101 | "Attribute " + POOL_NAME + " has null value"); |
| 102 | } |
| 103 | return poolname; |
| 104 | } |
| 105 | |
| 106 | public static MemoryUsage getUsage(CompositeData cd) { |
| 107 | CompositeData usageData = (CompositeData) cd.get(USAGE); |
| 108 | return MemoryUsage.from(usageData); |
| 109 | } |
| 110 | |
| 111 | public static long getCount(CompositeData cd) { |
| 112 | return getLong(cd, COUNT); |
| 113 | } |
| 114 | |
| 115 | /** Validate if the input CompositeData has the expected |
| 116 | * CompositeType (i.e. contain all attributes with expected |
| 117 | * names and types). |
| 118 | */ |
| 119 | public static void validateCompositeData(CompositeData cd) { |
| 120 | if (cd == null) { |
| 121 | throw new NullPointerException("Null CompositeData"); |
| 122 | } |
| 123 | |
| 124 | if (!isTypeMatched(memoryNotifInfoCompositeType, cd.getCompositeType())) { |
| 125 | throw new IllegalArgumentException( |
| 126 | "Unexpected composite type for MemoryNotificationInfo"); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | } |