J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2006 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.*; |
| 29 | import java.util.logging.LogManager; |
| 30 | |
| 31 | import javax.management.DynamicMBean; |
| 32 | import javax.management.MBeanServer; |
| 33 | import javax.management.MBeanServerFactory; |
| 34 | import javax.management.MBeanInfo; |
| 35 | import javax.management.NotificationEmitter; |
| 36 | import javax.management.ObjectName; |
| 37 | import javax.management.ObjectInstance; |
| 38 | import javax.management.InstanceAlreadyExistsException; |
| 39 | import javax.management.InstanceNotFoundException; |
| 40 | import javax.management.MBeanRegistrationException; |
| 41 | import javax.management.NotCompliantMBeanException; |
| 42 | import javax.management.MalformedObjectNameException; |
| 43 | import javax.management.RuntimeOperationsException; |
| 44 | import javax.management.StandardEmitterMBean; |
| 45 | import javax.management.StandardMBean; |
| 46 | import java.security.AccessController; |
| 47 | import java.security.Permission; |
| 48 | import java.security.PrivilegedActionException; |
| 49 | import java.security.PrivilegedExceptionAction; |
| 50 | import sun.security.action.LoadLibraryAction; |
| 51 | |
| 52 | import java.util.ArrayList; |
| 53 | import java.util.List; |
| 54 | import java.util.HashMap; |
| 55 | import java.util.Map; |
| 56 | import java.util.Set; |
| 57 | import java.util.Iterator; |
| 58 | import java.util.ListIterator; |
| 59 | import com.sun.management.OSMBeanFactory; |
| 60 | import com.sun.management.HotSpotDiagnosticMXBean; |
| 61 | |
| 62 | import static java.lang.management.ManagementFactory.*; |
| 63 | |
| 64 | /** |
| 65 | * ManagementFactory provides static factory methods to create |
| 66 | * instances of the management interface. |
| 67 | */ |
| 68 | public class ManagementFactory { |
| 69 | private ManagementFactory() {}; |
| 70 | |
| 71 | private static VMManagement jvm; |
| 72 | |
| 73 | private static boolean mbeansCreated = false; |
| 74 | private static ClassLoadingImpl classMBean = null; |
| 75 | private static MemoryImpl memoryMBean = null; |
| 76 | private static ThreadImpl threadMBean = null; |
| 77 | private static RuntimeImpl runtimeMBean = null; |
| 78 | private static CompilationImpl compileMBean = null; |
| 79 | private static OperatingSystemImpl osMBean = null; |
| 80 | |
| 81 | public static synchronized ClassLoadingMXBean getClassLoadingMXBean() { |
| 82 | if (classMBean == null) { |
| 83 | classMBean = new ClassLoadingImpl(jvm); |
| 84 | } |
| 85 | return classMBean; |
| 86 | } |
| 87 | |
| 88 | public static synchronized MemoryMXBean getMemoryMXBean() { |
| 89 | if (memoryMBean == null) { |
| 90 | memoryMBean = new MemoryImpl(jvm); |
| 91 | } |
| 92 | return memoryMBean; |
| 93 | } |
| 94 | |
| 95 | public static synchronized ThreadMXBean getThreadMXBean() { |
| 96 | if (threadMBean == null) { |
| 97 | threadMBean = new ThreadImpl(jvm); |
| 98 | } |
| 99 | return threadMBean; |
| 100 | } |
| 101 | |
| 102 | public static synchronized RuntimeMXBean getRuntimeMXBean() { |
| 103 | if (runtimeMBean == null) { |
| 104 | runtimeMBean = new RuntimeImpl(jvm); |
| 105 | } |
| 106 | return runtimeMBean; |
| 107 | } |
| 108 | |
| 109 | public static synchronized CompilationMXBean getCompilationMXBean() { |
| 110 | if (compileMBean == null && jvm.getCompilerName() != null) { |
| 111 | compileMBean = new CompilationImpl(jvm); |
| 112 | } |
| 113 | return compileMBean; |
| 114 | } |
| 115 | |
| 116 | public static synchronized OperatingSystemMXBean getOperatingSystemMXBean() { |
| 117 | if (osMBean == null) { |
| 118 | osMBean = (OperatingSystemImpl) |
| 119 | OSMBeanFactory.getOperatingSystemMXBean(jvm); |
| 120 | } |
| 121 | return osMBean; |
| 122 | } |
| 123 | |
| 124 | public static List<MemoryPoolMXBean> getMemoryPoolMXBeans() { |
| 125 | MemoryPoolMXBean[] pools = MemoryImpl.getMemoryPools(); |
| 126 | List<MemoryPoolMXBean> list = new ArrayList<MemoryPoolMXBean>(pools.length); |
| 127 | for (int i = 0; i < pools.length; i++) { |
| 128 | MemoryPoolMXBean p = pools[i]; |
| 129 | list.add(p); |
| 130 | } |
| 131 | return list; |
| 132 | } |
| 133 | |
| 134 | public static List<MemoryManagerMXBean> getMemoryManagerMXBeans() { |
| 135 | MemoryManagerMXBean[] mgrs = MemoryImpl.getMemoryManagers(); |
| 136 | List<MemoryManagerMXBean> result = new ArrayList<MemoryManagerMXBean>(mgrs.length); |
| 137 | for (int i = 0; i < mgrs.length; i++) { |
| 138 | MemoryManagerMXBean m = mgrs[i]; |
| 139 | result.add(m); |
| 140 | } |
| 141 | return result; |
| 142 | } |
| 143 | |
| 144 | public static List<GarbageCollectorMXBean> getGarbageCollectorMXBeans() { |
| 145 | MemoryManagerMXBean[] mgrs = MemoryImpl.getMemoryManagers(); |
| 146 | List<GarbageCollectorMXBean> result = new ArrayList<GarbageCollectorMXBean>(mgrs.length); |
| 147 | for (int i = 0; i < mgrs.length; i++) { |
| 148 | if (mgrs[i] instanceof GarbageCollectorMXBean) { |
| 149 | GarbageCollectorMXBean gc = (GarbageCollectorMXBean) mgrs[i]; |
| 150 | result.add(gc); |
| 151 | } |
| 152 | } |
| 153 | return result; |
| 154 | } |
| 155 | |
| 156 | private static HotSpotDiagnostic hsDiagMBean = null; |
| 157 | private static HotspotRuntime hsRuntimeMBean = null; |
| 158 | private static HotspotClassLoading hsClassMBean = null; |
| 159 | private static HotspotThread hsThreadMBean = null; |
| 160 | private static HotspotCompilation hsCompileMBean = null; |
| 161 | private static HotspotMemory hsMemoryMBean = null; |
| 162 | |
| 163 | public static synchronized HotSpotDiagnosticMXBean getDiagnosticMXBean() { |
| 164 | if (hsDiagMBean == null) { |
| 165 | hsDiagMBean = new HotSpotDiagnostic(); |
| 166 | } |
| 167 | return hsDiagMBean; |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | |
| 172 | /** |
| 173 | * This method is for testing only. |
| 174 | */ |
| 175 | public static synchronized HotspotRuntimeMBean getHotspotRuntimeMBean() { |
| 176 | if (hsRuntimeMBean == null) { |
| 177 | hsRuntimeMBean = new HotspotRuntime(jvm); |
| 178 | } |
| 179 | return hsRuntimeMBean; |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * This method is for testing only. |
| 184 | */ |
| 185 | public static synchronized HotspotClassLoadingMBean getHotspotClassLoadingMBean() { |
| 186 | if (hsClassMBean == null) { |
| 187 | hsClassMBean = new HotspotClassLoading(jvm); |
| 188 | } |
| 189 | return hsClassMBean; |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * This method is for testing only. |
| 194 | */ |
| 195 | public static synchronized HotspotThreadMBean getHotspotThreadMBean() { |
| 196 | if (hsThreadMBean == null) { |
| 197 | hsThreadMBean = new HotspotThread(jvm); |
| 198 | } |
| 199 | return hsThreadMBean; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * This method is for testing only. |
| 204 | */ |
| 205 | public static synchronized HotspotMemoryMBean getHotspotMemoryMBean() { |
| 206 | if (hsMemoryMBean == null) { |
| 207 | hsMemoryMBean = new HotspotMemory(jvm); |
| 208 | } |
| 209 | return hsMemoryMBean; |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * This method is for testing only. |
| 214 | */ |
| 215 | public static synchronized HotspotCompilationMBean getHotspotCompilationMBean() { |
| 216 | if (hsCompileMBean == null) { |
| 217 | hsCompileMBean = new HotspotCompilation(jvm); |
| 218 | } |
| 219 | return hsCompileMBean; |
| 220 | } |
| 221 | |
| 222 | private static Permission monitorPermission = |
| 223 | new ManagementPermission("monitor"); |
| 224 | private static Permission controlPermission = |
| 225 | new ManagementPermission("control"); |
| 226 | |
| 227 | /** |
| 228 | * Check that the current context is trusted to perform monitoring |
| 229 | * or management. |
| 230 | * <p> |
| 231 | * If the check fails we throw a SecurityException, otherwise |
| 232 | * we return normally. |
| 233 | * |
| 234 | * @exception SecurityException if a security manager exists and if |
| 235 | * the caller does not have ManagementPermission("control"). |
| 236 | */ |
| 237 | static void checkAccess(Permission p) |
| 238 | throws SecurityException { |
| 239 | SecurityManager sm = System.getSecurityManager(); |
| 240 | if (sm != null) { |
| 241 | sm.checkPermission(p); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | static void checkMonitorAccess() throws SecurityException { |
| 246 | checkAccess(monitorPermission); |
| 247 | } |
| 248 | static void checkControlAccess() throws SecurityException { |
| 249 | checkAccess(controlPermission); |
| 250 | } |
| 251 | |
| 252 | /** |
| 253 | * Registers an MXBean and throws exception if an instance with the same |
| 254 | * name exists. |
| 255 | * |
| 256 | * This method makes a DynamicMBean out of an MXBean by wrapping it with a |
| 257 | * StandardMBean (StandardEmitterMBean if the supplied emitter is not null), |
| 258 | * so it can be registered in an MBeanServer which does not have support for |
| 259 | * MXBeans. |
| 260 | */ |
| 261 | private static void addMXBean(MBeanServer mbs, Object mbean, |
| 262 | String mbeanName, NotificationEmitter emitter) { |
| 263 | // Make DynamicMBean out of MXBean by wrapping it with a StandardMBean |
| 264 | // |
| 265 | final DynamicMBean dmbean; |
| 266 | if (emitter == null) { |
| 267 | dmbean = new StandardMBean(mbean, null, true); |
| 268 | } else { |
| 269 | dmbean = new StandardEmitterMBean(mbean, null, true, emitter); |
| 270 | } |
| 271 | addMBean(mbs, dmbean, mbeanName, false); |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * Registers a Standard MBean or a Dynamic MBean and throws |
| 276 | * exception if an instance with the same name exists. |
| 277 | */ |
| 278 | private static void addMBean(MBeanServer mbs, Object mbean, String mbeanName) { |
| 279 | addMBean(mbs, mbean, mbeanName, false); |
| 280 | } |
| 281 | |
| 282 | private static void addMBean(MBeanServer mbs, Object mbean, |
| 283 | String mbeanName, boolean ignoreConflicts) { |
| 284 | try { |
| 285 | final ObjectName objName = new ObjectName(mbeanName); |
| 286 | |
| 287 | // inner class requires these fields to be final |
| 288 | final MBeanServer mbs0 = mbs; |
| 289 | final Object mbean0 = mbean; |
| 290 | final boolean ignore = ignoreConflicts; |
| 291 | AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() { |
| 292 | public Object run() throws InstanceAlreadyExistsException, |
| 293 | MBeanRegistrationException, |
| 294 | NotCompliantMBeanException { |
| 295 | try { |
| 296 | ObjectInstance o = mbs0.registerMBean(mbean0, |
| 297 | objName); |
| 298 | return null; |
| 299 | } catch (InstanceAlreadyExistsException e) { |
| 300 | // if an instance with the object name exists in |
| 301 | // the MBeanServer ignore the exception |
| 302 | // if ignoreConflicts is true; |
| 303 | // otherwise, throws exception. |
| 304 | if (!ignore) { |
| 305 | throw e; |
| 306 | } |
| 307 | } |
| 308 | return null; |
| 309 | } |
| 310 | }); |
| 311 | } catch (PrivilegedActionException e) { |
| 312 | throw Util.newException(e.getException()); |
| 313 | } catch (MalformedObjectNameException e) { |
| 314 | // should not reach here |
| 315 | throw Util.newException(e); |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | public static MBeanServer createPlatformMBeanServer() { |
| 320 | MBeanServer mbs = MBeanServerFactory.createMBeanServer(); |
| 321 | // Register all the platform MBeans to this MBeanServer |
| 322 | addMXBean(mbs, getClassLoadingMXBean(), |
| 323 | CLASS_LOADING_MXBEAN_NAME, null); |
| 324 | addMXBean(mbs, getMemoryMXBean(), |
| 325 | MEMORY_MXBEAN_NAME, (NotificationEmitter) getMemoryMXBean()); |
| 326 | addMXBean(mbs, getOperatingSystemMXBean(), |
| 327 | OPERATING_SYSTEM_MXBEAN_NAME, null); |
| 328 | addMXBean(mbs, getRuntimeMXBean(), |
| 329 | RUNTIME_MXBEAN_NAME, null); |
| 330 | addMXBean(mbs, getThreadMXBean(), |
| 331 | THREAD_MXBEAN_NAME, null); |
| 332 | addMXBean(mbs, getDiagnosticMXBean(), |
| 333 | HOTSPOT_DIAGNOSTIC_MXBEAN_NAME, null); |
| 334 | |
| 335 | // CompilationMBean may not exist |
| 336 | if (getCompilationMXBean() != null) { |
| 337 | addMXBean(mbs, getCompilationMXBean(), |
| 338 | COMPILATION_MXBEAN_NAME, null); |
| 339 | } |
| 340 | |
| 341 | // Register MBeans for memory pools and memory managers |
| 342 | addMemoryManagers(mbs); |
| 343 | addMemoryPools(mbs); |
| 344 | |
| 345 | // Register platform extension |
| 346 | addMXBean(mbs, LogManager.getLoggingMXBean(), |
| 347 | LogManager.LOGGING_MXBEAN_NAME, null); |
| 348 | |
| 349 | return mbs; |
| 350 | } |
| 351 | |
| 352 | private final static String HOTSPOT_DIAGNOSTIC_MXBEAN_NAME = |
| 353 | "com.sun.management:type=HotSpotDiagnostic"; |
| 354 | |
| 355 | private final static String HOTSPOT_CLASS_LOADING_MBEAN_NAME = |
| 356 | "sun.management:type=HotspotClassLoading"; |
| 357 | |
| 358 | private final static String HOTSPOT_COMPILATION_MBEAN_NAME = |
| 359 | "sun.management:type=HotspotCompilation"; |
| 360 | |
| 361 | private final static String HOTSPOT_MEMORY_MBEAN_NAME = |
| 362 | "sun.management:type=HotspotMemory"; |
| 363 | |
| 364 | private static final String HOTSPOT_RUNTIME_MBEAN_NAME = |
| 365 | "sun.management:type=HotspotRuntime"; |
| 366 | |
| 367 | private final static String HOTSPOT_THREAD_MBEAN_NAME = |
| 368 | "sun.management:type=HotspotThreading"; |
| 369 | |
| 370 | private final static String HOTSPOT_INTERNAL_MBEAN_NAME = |
| 371 | "sun.management:type=HotspotInternal"; |
| 372 | |
| 373 | private static ObjectName hsInternalObjName = null; |
| 374 | static synchronized ObjectName getHotspotInternalObjectName() { |
| 375 | if (hsInternalObjName == null) { |
| 376 | try { |
| 377 | hsInternalObjName = new ObjectName(HOTSPOT_INTERNAL_MBEAN_NAME); |
| 378 | } catch (MalformedObjectNameException e) { |
| 379 | // should not reach here |
| 380 | throw Util.newException(e); |
| 381 | } |
| 382 | } |
| 383 | return hsInternalObjName; |
| 384 | } |
| 385 | |
| 386 | static void registerInternalMBeans(MBeanServer mbs) { |
| 387 | // register all internal MBeans if not registered |
| 388 | // No exception is thrown if a MBean with that object name |
| 389 | // already registered (i.e. ignore if name conflicts). |
| 390 | addMBean(mbs, getHotspotClassLoadingMBean(), |
| 391 | HOTSPOT_CLASS_LOADING_MBEAN_NAME, true); |
| 392 | addMBean(mbs, getHotspotMemoryMBean(), |
| 393 | HOTSPOT_MEMORY_MBEAN_NAME, true); |
| 394 | addMBean(mbs, getHotspotRuntimeMBean(), |
| 395 | HOTSPOT_RUNTIME_MBEAN_NAME, true); |
| 396 | addMBean(mbs, getHotspotThreadMBean(), |
| 397 | HOTSPOT_THREAD_MBEAN_NAME, true); |
| 398 | |
| 399 | // CompilationMBean may not exist |
| 400 | if (getCompilationMXBean() != null) { |
| 401 | addMBean(mbs, getHotspotCompilationMBean(), |
| 402 | HOTSPOT_COMPILATION_MBEAN_NAME, true); |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | private static void unregisterMBean(MBeanServer mbs, String mbeanName) { |
| 407 | try { |
| 408 | final ObjectName objName = new ObjectName(mbeanName); |
| 409 | |
| 410 | // inner class requires these fields to be final |
| 411 | final MBeanServer mbs0 = mbs; |
| 412 | AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() { |
| 413 | public Object run() throws MBeanRegistrationException, |
| 414 | RuntimeOperationsException { |
| 415 | try { |
| 416 | mbs0.unregisterMBean(objName); |
| 417 | } catch (InstanceNotFoundException e) { |
| 418 | // ignore exception if not found |
| 419 | } |
| 420 | return null; |
| 421 | } |
| 422 | }); |
| 423 | } catch (PrivilegedActionException e) { |
| 424 | throw Util.newException(e.getException()); |
| 425 | } catch (MalformedObjectNameException e) { |
| 426 | // should not reach here |
| 427 | throw Util.newException(e); |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | static void unregisterInternalMBeans(MBeanServer mbs) { |
| 432 | // unregister all internal MBeans |
| 433 | unregisterMBean(mbs, HOTSPOT_CLASS_LOADING_MBEAN_NAME); |
| 434 | unregisterMBean(mbs, HOTSPOT_MEMORY_MBEAN_NAME); |
| 435 | unregisterMBean(mbs, HOTSPOT_RUNTIME_MBEAN_NAME); |
| 436 | unregisterMBean(mbs, HOTSPOT_THREAD_MBEAN_NAME); |
| 437 | |
| 438 | // CompilationMBean may not exist |
| 439 | if (getCompilationMXBean() != null) { |
| 440 | unregisterMBean(mbs, HOTSPOT_COMPILATION_MBEAN_NAME); |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | private static synchronized void addMemoryPools(MBeanServer mbs) { |
| 445 | |
| 446 | // Get a list of memory pools |
| 447 | MemoryPoolMXBean[] newPools = MemoryImpl.getMemoryPools(); |
| 448 | |
| 449 | for (int i = 0; i < newPools.length; i++) { |
| 450 | String poolObjNameString = Util.getMBeanObjectName(newPools[i]); |
| 451 | addMXBean(mbs, newPools[i], poolObjNameString, null); |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | // Register all memory managers with the MBeanServer; |
| 456 | private static synchronized void addMemoryManagers(MBeanServer mbs) { |
| 457 | |
| 458 | // Get a list of memory managers |
| 459 | MemoryManagerMXBean[] newMgrs = MemoryImpl.getMemoryManagers(); |
| 460 | |
| 461 | for (int i = 0; i < newMgrs.length; i++) { |
| 462 | String mgrObjNameString = Util.getMBeanObjectName(newMgrs[i]); |
| 463 | addMXBean(mbs, newMgrs[i], mgrObjNameString, null); |
| 464 | } |
| 465 | } |
| 466 | |
| 467 | // Invoked by the VM |
| 468 | private static MemoryPoolMXBean createMemoryPool |
| 469 | (String name, boolean isHeap, long uThreshold, long gcThreshold) { |
| 470 | return new MemoryPoolImpl(name, isHeap, uThreshold, gcThreshold); |
| 471 | } |
| 472 | |
| 473 | private static MemoryManagerMXBean createMemoryManager(String name) { |
| 474 | return new MemoryManagerImpl(name); |
| 475 | } |
| 476 | |
| 477 | private static GarbageCollectorMXBean |
| 478 | createGarbageCollector(String name, String type) { |
| 479 | |
| 480 | // ignore type parameter which is for future extension |
| 481 | return new GarbageCollectorImpl(name); |
| 482 | } |
| 483 | |
| 484 | static { |
| 485 | AccessController.doPrivileged(new LoadLibraryAction("management")); |
| 486 | jvm = new VMManagementImpl(); |
| 487 | } |
| 488 | |
| 489 | public static boolean isThreadSuspended(int state) { |
| 490 | return ((state & JMM_THREAD_STATE_FLAG_SUSPENDED) != 0); |
| 491 | } |
| 492 | |
| 493 | public static boolean isThreadRunningNative(int state) { |
| 494 | return ((state & JMM_THREAD_STATE_FLAG_NATIVE) != 0); |
| 495 | } |
| 496 | |
| 497 | public static Thread.State toThreadState(int state) { |
| 498 | // suspended and native bits may be set in state |
| 499 | int threadStatus = state & ~JMM_THREAD_STATE_FLAG_MASK; |
| 500 | return sun.misc.VM.toThreadState(threadStatus); |
| 501 | } |
| 502 | |
| 503 | // These values are defined in jmm.h |
| 504 | private static final int JMM_THREAD_STATE_FLAG_MASK = 0xFFF00000; |
| 505 | private static final int JMM_THREAD_STATE_FLAG_SUSPENDED = 0x00100000; |
| 506 | private static final int JMM_THREAD_STATE_FLAG_NATIVE = 0x00400000; |
| 507 | |
| 508 | } |