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| 1 | /* | ||
| 2 | * Copyright (c) 2004, 2011, 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 sun.management; | ||
| 27 | |||
| 28 | import java.lang.management.MemoryUsage; | ||
| 29 | import java.lang.reflect.Method; | ||
| 30 | import java.lang.reflect.Field; | ||
| 31 | import java.util.Iterator; | ||
| 32 | import java.util.Map; | ||
| 33 | import java.util.HashMap; | ||
| 34 | import java.util.List; | ||
| 35 | import java.util.Collections; | ||
| 36 | import java.io.InvalidObjectException; | ||
| 37 | import javax.management.openmbean.CompositeType; | ||
| 38 | import javax.management.openmbean.CompositeData; | ||
| 39 | import javax.management.openmbean.CompositeDataSupport; | ||
| 40 | import javax.management.openmbean.TabularData; | ||
| 41 | import javax.management.openmbean.SimpleType; | ||
| 42 | import javax.management.openmbean.OpenType; | ||
| 43 | import javax.management.openmbean.OpenDataException; | ||
| 44 | import com.sun.management.GcInfo; | ||
| 45 | import com.sun.management.GarbageCollectionNotificationInfo; | ||
| 46 | import java.security.AccessController; | ||
| 47 | import java.security.PrivilegedAction; | ||
| 48 | |||
| 49 | /** | ||
| 50 | * A CompositeData for GcInfo for the local management support. | ||
| 51 | * This class avoids the performance penalty paid to the | ||
| 52 | * construction of a CompositeData use in the local case. | ||
| 53 | */ | ||
| 54 | public class GcInfoCompositeData extends LazyCompositeData { | ||
| 55 | private final GcInfo info; | ||
| 56 | private final GcInfoBuilder builder; | ||
| 57 | private final Object[] gcExtItemValues; | ||
| 58 | |||
| 59 | public GcInfoCompositeData(GcInfo info, | ||
| 60 | GcInfoBuilder builder, | ||
| 61 | Object[] gcExtItemValues) { | ||
| 62 | this.info = info; | ||
| 63 | this.builder = builder; | ||
| 64 | this.gcExtItemValues = gcExtItemValues; | ||
| 65 | } | ||
| 66 | |||
| 67 | public GcInfo getGcInfo() { | ||
| 68 | return info; | ||
| 69 | } | ||
| 70 | |||
| 71 | public static CompositeData toCompositeData(final GcInfo info) { | ||
| 72 | final GcInfoBuilder builder = AccessController.doPrivileged (new PrivilegedAction<GcInfoBuilder>() { | ||
| 73 | public GcInfoBuilder run() { | ||
| 74 | try { | ||
| 75 | Class cl = Class.forName("com.sun.management.GcInfo"); | ||
| 76 | Field f = cl.getDeclaredField("builder"); | ||
| 77 | f.setAccessible(true); | ||
| 78 | return (GcInfoBuilder)f.get(info); | ||
| 79 | } catch(ClassNotFoundException e) { | ||
| 80 | return null; | ||
| 81 | } catch(NoSuchFieldException e) { | ||
| 82 | return null; | ||
| 83 | } catch(IllegalAccessException e) { | ||
| 84 | return null; | ||
| 85 | } | ||
| 86 | } | ||
| 87 | }); | ||
| 88 | final Object[] extAttr = AccessController.doPrivileged (new PrivilegedAction<Object[]>() { | ||
| 89 | public Object[] run() { | ||
| 90 | try { | ||
| 91 | Class cl = Class.forName("com.sun.management.GcInfo"); | ||
| 92 | Field f = cl.getDeclaredField("extAttributes"); | ||
| 93 | f.setAccessible(true); | ||
| 94 | return (Object[])f.get(info); | ||
| 95 | } catch(ClassNotFoundException e) { | ||
| 96 | return null; | ||
| 97 | } catch(NoSuchFieldException e) { | ||
| 98 | return null; | ||
| 99 | } catch(IllegalAccessException e) { | ||
| 100 | return null; | ||
| 101 | } | ||
| 102 | } | ||
| 103 | }); | ||
| 104 | GcInfoCompositeData gcicd = | ||
| 105 | new GcInfoCompositeData(info,builder,extAttr); | ||
| 106 | return gcicd.getCompositeData(); | ||
| 107 | } | ||
| 108 | |||
| 109 | protected CompositeData getCompositeData() { | ||
| 110 | // CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH | ||
| 111 | // baseGcInfoItemNames! | ||
| 112 | final Object[] baseGcInfoItemValues; | ||
| 113 | |||
| 114 | try { | ||
| 115 | baseGcInfoItemValues = new Object[] { | ||
| 116 | new Long(info.getId()), | ||
| 117 | new Long(info.getStartTime()), | ||
| 118 | new Long(info.getEndTime()), | ||
| 119 | new Long(info.getDuration()), | ||
| 120 | memoryUsageMapType.toOpenTypeData(info.getMemoryUsageBeforeGc()), | ||
| 121 | memoryUsageMapType.toOpenTypeData(info.getMemoryUsageAfterGc()), | ||
| 122 | }; | ||
| 123 | } catch (OpenDataException e) { | ||
| 124 | // Should never reach here | ||
| 125 | throw new AssertionError(e); | ||
| 126 | } | ||
| 127 | |||
| 128 | // Get the item values for the extension attributes | ||
| 129 | final int gcExtItemCount = builder.getGcExtItemCount(); | ||
| 130 | if (gcExtItemCount == 0 && | ||
| 131 | gcExtItemValues != null && gcExtItemValues.length != 0) { | ||
| 132 | throw new AssertionError("Unexpected Gc Extension Item Values"); | ||
| 133 | } | ||
| 134 | |||
| 135 | if (gcExtItemCount > 0 && (gcExtItemValues == null || | ||
| 136 | gcExtItemCount != gcExtItemValues.length)) { | ||
| 137 | throw new AssertionError("Unmatched Gc Extension Item Values"); | ||
| 138 | } | ||
| 139 | |||
| 140 | Object[] values = new Object[baseGcInfoItemValues.length + | ||
| 141 | gcExtItemCount]; | ||
| 142 | System.arraycopy(baseGcInfoItemValues, 0, values, 0, | ||
| 143 | baseGcInfoItemValues.length); | ||
| 144 | |||
| 145 | if (gcExtItemCount > 0) { | ||
| 146 | System.arraycopy(gcExtItemValues, 0, values, | ||
| 147 | baseGcInfoItemValues.length, gcExtItemCount); | ||
| 148 | } | ||
| 149 | |||
| 150 | try { | ||
| 151 | return new CompositeDataSupport(builder.getGcInfoCompositeType(), | ||
| 152 | builder.getItemNames(), | ||
| 153 | values); | ||
| 154 | } catch (OpenDataException e) { | ||
| 155 | // Should never reach here | ||
| 156 | throw new AssertionError(e); | ||
| 157 | } | ||
| 158 | } | ||
| 159 | |||
| 160 | private static final String ID = "id"; | ||
| 161 | private static final String START_TIME = "startTime"; | ||
| 162 | private static final String END_TIME = "endTime"; | ||
| 163 | private static final String DURATION = "duration"; | ||
| 164 | private static final String MEMORY_USAGE_BEFORE_GC = "memoryUsageBeforeGc"; | ||
| 165 | private static final String MEMORY_USAGE_AFTER_GC = "memoryUsageAfterGc"; | ||
| 166 | |||
| 167 | private static final String[] baseGcInfoItemNames = { | ||
| 168 | ID, | ||
| 169 | START_TIME, | ||
| 170 | END_TIME, | ||
| 171 | DURATION, | ||
| 172 | MEMORY_USAGE_BEFORE_GC, | ||
| 173 | MEMORY_USAGE_AFTER_GC, | ||
| 174 | }; | ||
| 175 | |||
| 176 | |||
| 177 | private static MappedMXBeanType memoryUsageMapType; | ||
| 178 | static { | ||
| 179 | try { | ||
| 180 | Method m = GcInfo.class.getMethod("getMemoryUsageBeforeGc"); | ||
| 181 | memoryUsageMapType = | ||
| 182 | MappedMXBeanType.getMappedType(m.getGenericReturnType()); | ||
| 183 | } catch (NoSuchMethodException e) { | ||
| 184 | // Should never reach here | ||
| 185 | throw new AssertionError(e); | ||
| 186 | } catch (OpenDataException e) { | ||
| 187 | // Should never reach here | ||
| 188 | throw new AssertionError(e); | ||
| 189 | } | ||
| 190 | } | ||
| 191 | |||
| 192 | static String[] getBaseGcInfoItemNames() { | ||
| 193 | return baseGcInfoItemNames; | ||
| 194 | } | ||
| 195 | |||
| 196 | private static OpenType[] baseGcInfoItemTypes = null; | ||
| 197 | static synchronized OpenType[] getBaseGcInfoItemTypes() { | ||
| 198 | if (baseGcInfoItemTypes == null) { | ||
| 199 | OpenType<?> memoryUsageOpenType = memoryUsageMapType.getOpenType(); | ||
| 200 | baseGcInfoItemTypes = new OpenType[] { | ||
| 201 | SimpleType.LONG, | ||
| 202 | SimpleType.LONG, | ||
| 203 | SimpleType.LONG, | ||
| 204 | SimpleType.LONG, | ||
| 205 | |||
| 206 | memoryUsageOpenType, | ||
| 207 | memoryUsageOpenType, | ||
| 208 | }; | ||
| 209 | } | ||
| 210 | return baseGcInfoItemTypes; | ||
| 211 | } | ||
| 212 | |||
| 213 | public static long getId(CompositeData cd) { | ||
| 214 | return getLong(cd, ID); | ||
| 215 | } | ||
| 216 | public static long getStartTime(CompositeData cd) { | ||
| 217 | return getLong(cd, START_TIME); | ||
| 218 | } | ||
| 219 | public static long getEndTime(CompositeData cd) { | ||
| 220 | return getLong(cd, END_TIME); | ||
| 221 | } | ||
| 222 | |||
| 223 | public static Map<String, MemoryUsage> | ||
| 224 | getMemoryUsageBeforeGc(CompositeData cd) { | ||
| 225 | try { | ||
| 226 | TabularData td = (TabularData) cd.get(MEMORY_USAGE_BEFORE_GC); | ||
| 227 | return cast(memoryUsageMapType.toJavaTypeData(td)); | ||
| 228 | } catch (InvalidObjectException e) { | ||
| 229 | // Should never reach here | ||
| 230 | throw new AssertionError(e); | ||
| 231 | } catch (OpenDataException e) { | ||
| 232 | // Should never reach here | ||
| 233 | throw new AssertionError(e); | ||
| 234 | } | ||
| 235 | } | ||
| 236 | |||
| 237 | @SuppressWarnings("unchecked") | ||
| 238 | public static Map<String, MemoryUsage> cast(Object x) { | ||
| 239 | return (Map<String, MemoryUsage>) x; | ||
| 240 | } | ||
| 241 | public static Map<String, MemoryUsage> | ||
| 242 | getMemoryUsageAfterGc(CompositeData cd) { | ||
| 243 | try { | ||
| 244 | TabularData td = (TabularData) cd.get(MEMORY_USAGE_AFTER_GC); | ||
| 245 | //return (Map<String,MemoryUsage>) | ||
| 246 | return cast(memoryUsageMapType.toJavaTypeData(td)); | ||
| 247 | } catch (InvalidObjectException e) { | ||
| 248 | // Should never reach here | ||
| 249 | throw new AssertionError(e); | ||
| 250 | } catch (OpenDataException e) { | ||
| 251 | // Should never reach here | ||
| 252 | throw new AssertionError(e); | ||
| 253 | } | ||
| 254 | } | ||
| 255 | |||
| 256 | /** | ||
| 257 | * Returns true if the input CompositeData has the expected | ||
| 258 | * CompositeType (i.e. contain all attributes with expected | ||
| 259 | * names and types). Otherwise, return false. | ||
| 260 | */ | ||
| 261 | public static void validateCompositeData(CompositeData cd) { | ||
| 262 | if (cd == null) { | ||
| 263 | throw new NullPointerException("Null CompositeData"); | ||
| 264 | } | ||
| 265 | |||
| 266 | if (!isTypeMatched(getBaseGcInfoCompositeType(), | ||
| 267 | cd.getCompositeType())) { | ||
| 268 | throw new IllegalArgumentException( | ||
| 269 | "Unexpected composite type for GcInfo"); | ||
| 270 | } | ||
| 271 | } | ||
| 272 | |||
| 273 | // This is only used for validation. | ||
| 274 | private static CompositeType baseGcInfoCompositeType = null; | ||
| 275 | static synchronized CompositeType getBaseGcInfoCompositeType() { | ||
| 276 | if (baseGcInfoCompositeType == null) { | ||
| 277 | try { | ||
| 278 | baseGcInfoCompositeType = | ||
| 279 | new CompositeType("sun.management.BaseGcInfoCompositeType", | ||
| 280 | "CompositeType for Base GcInfo", | ||
| 281 | getBaseGcInfoItemNames(), | ||
| 282 | getBaseGcInfoItemNames(), | ||
| 283 | getBaseGcInfoItemTypes()); | ||
| 284 | } catch (OpenDataException e) { | ||
| 285 | // shouldn't reach here | ||
| 286 | throw Util.newException(e); | ||
| 287 | } | ||
| 288 | } | ||
| 289 | return baseGcInfoCompositeType; | ||
| 290 | } | ||
| 291 | |||
| 292 | private static final long serialVersionUID = -5716428894085882742L; | ||
| 293 | } | ||