| /* |
| * Copyright (c) 2003, 2015, 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 sun.management; |
| |
| import java.lang.management.*; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import javax.management.InstanceAlreadyExistsException; |
| import javax.management.InstanceNotFoundException; |
| import javax.management.MBeanServer; |
| import javax.management.MBeanRegistrationException; |
| import javax.management.NotCompliantMBeanException; |
| import javax.management.ObjectName; |
| import javax.management.RuntimeOperationsException; |
| import java.security.AccessController; |
| import java.security.PrivilegedActionException; |
| import java.security.PrivilegedExceptionAction; |
| |
| import jdk.internal.misc.JavaNioAccess; |
| import jdk.internal.misc.SharedSecrets; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import java.lang.reflect.Module; |
| import java.lang.reflect.UndeclaredThrowableException; |
| import java.security.PrivilegedAction; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Optional; |
| |
| /** |
| * ManagementFactoryHelper provides static factory methods to create |
| * instances of the management interface. |
| */ |
| public class ManagementFactoryHelper { |
| static { |
| // make sure that the management lib is loaded within |
| // java.lang.management.ManagementFactory |
| jdk.internal.misc.Unsafe.getUnsafe().ensureClassInitialized(ManagementFactory.class); |
| } |
| |
| private static final VMManagement jvm = new VMManagementImpl(); |
| |
| private ManagementFactoryHelper() {}; |
| |
| public static VMManagement getVMManagement() { |
| return jvm; |
| } |
| |
| static final String LOGGING_MXBEAN_NAME = "java.util.logging:type=Logging"; |
| private static ClassLoadingImpl classMBean = null; |
| private static MemoryImpl memoryMBean = null; |
| private static ThreadImpl threadMBean = null; |
| private static RuntimeImpl runtimeMBean = null; |
| private static CompilationImpl compileMBean = null; |
| private static BaseOperatingSystemImpl osMBean = null; |
| |
| public static synchronized ClassLoadingMXBean getClassLoadingMXBean() { |
| if (classMBean == null) { |
| classMBean = new ClassLoadingImpl(jvm); |
| } |
| return classMBean; |
| } |
| |
| public static synchronized MemoryMXBean getMemoryMXBean() { |
| if (memoryMBean == null) { |
| memoryMBean = new MemoryImpl(jvm); |
| } |
| return memoryMBean; |
| } |
| |
| public static synchronized ThreadMXBean getThreadMXBean() { |
| if (threadMBean == null) { |
| threadMBean = new ThreadImpl(jvm); |
| } |
| return threadMBean; |
| } |
| |
| public static synchronized RuntimeMXBean getRuntimeMXBean() { |
| if (runtimeMBean == null) { |
| runtimeMBean = new RuntimeImpl(jvm); |
| } |
| return runtimeMBean; |
| } |
| |
| public static synchronized CompilationMXBean getCompilationMXBean() { |
| if (compileMBean == null && jvm.getCompilerName() != null) { |
| compileMBean = new CompilationImpl(jvm); |
| } |
| return compileMBean; |
| } |
| |
| public static synchronized OperatingSystemMXBean getOperatingSystemMXBean() { |
| if (osMBean == null) { |
| osMBean = new BaseOperatingSystemImpl(jvm); |
| } |
| return osMBean; |
| } |
| |
| public static List<MemoryPoolMXBean> getMemoryPoolMXBeans() { |
| MemoryPoolMXBean[] pools = MemoryImpl.getMemoryPools(); |
| List<MemoryPoolMXBean> list = new ArrayList<>(pools.length); |
| for (MemoryPoolMXBean p : pools) { |
| list.add(p); |
| } |
| return list; |
| } |
| |
| public static List<MemoryManagerMXBean> getMemoryManagerMXBeans() { |
| MemoryManagerMXBean[] mgrs = MemoryImpl.getMemoryManagers(); |
| List<MemoryManagerMXBean> result = new ArrayList<>(mgrs.length); |
| for (MemoryManagerMXBean m : mgrs) { |
| result.add(m); |
| } |
| return result; |
| } |
| |
| public static List<GarbageCollectorMXBean> getGarbageCollectorMXBeans() { |
| MemoryManagerMXBean[] mgrs = MemoryImpl.getMemoryManagers(); |
| List<GarbageCollectorMXBean> result = new ArrayList<>(mgrs.length); |
| for (MemoryManagerMXBean m : mgrs) { |
| if (GarbageCollectorMXBean.class.isInstance(m)) { |
| result.add(GarbageCollectorMXBean.class.cast(m)); |
| } |
| } |
| return result; |
| } |
| |
| public static PlatformLoggingMXBean getPlatformLoggingMXBean() { |
| if (LoggingMXBeanAccess.isAvailable()) { |
| return PlatformLoggingImpl.MBEAN; |
| } else { |
| return null; |
| } |
| } |
| |
| public static boolean isPlatformLoggingMXBeanAvailable() { |
| return LoggingMXBeanAccess.isAvailable(); |
| } |
| |
| // The LoggingMXBeanAccess class uses reflection to determine |
| // whether java.util.logging is present, and load the actual LoggingMXBean |
| // implementation. |
| // |
| static final class LoggingMXBeanAccess { |
| |
| final static String LOG_MANAGER_CLASS_NAME = "java.util.logging.LogManager"; |
| final static String LOGGING_MXBEAN_CLASS_NAME = "java.util.logging.LoggingMXBean"; |
| final static Class<?> LOG_MANAGER_CLASS = loadLoggingClass(LOG_MANAGER_CLASS_NAME); |
| |
| static boolean isAvailable() { |
| return LOG_MANAGER_CLASS != null; |
| } |
| |
| private static Class<?> loadLoggingClass(String className) { |
| return AccessController.doPrivileged(new PrivilegedAction<>() { |
| @Override |
| public Class<?> run() { |
| Optional<Module> logging = java.lang.reflect.Layer.boot() |
| .findModule("java.logging"); |
| if (logging.isPresent()) { |
| return Class.forName(logging.get(), className); |
| } |
| return null; |
| } |
| }); |
| } |
| |
| private Map<String, Method> initMethodMap(Object impl) { |
| if (impl == null) { |
| return Collections.emptyMap(); |
| } |
| Class<?> intfClass = loadLoggingClass(LOGGING_MXBEAN_CLASS_NAME); |
| final Map<String, Method> methodsMap = new HashMap<>(); |
| for (Method m : intfClass.getMethods()) { |
| try { |
| // Sanity checking: all public methods present in |
| // java.util.logging.LoggingMXBean should |
| // also be in PlatformLoggingMXBean |
| Method specMethod = PlatformLoggingMXBean.class |
| .getMethod(m.getName(), m.getParameterTypes()); |
| if (specMethod.getReturnType().isAssignableFrom(m.getReturnType())) { |
| if (methodsMap.putIfAbsent(m.getName(), m) != null) { |
| throw new RuntimeException("unexpected polymorphic method: " |
| + m.getName()); |
| } |
| } |
| } catch (NoSuchMethodException x) { |
| // All methods in java.util.logging.LoggingMXBean should |
| // also be in PlatformLoggingMXBean |
| throw new InternalError(x); |
| } |
| } |
| return Collections.unmodifiableMap(methodsMap); |
| } |
| |
| private static Object getMXBeanImplementation() { |
| if (!isAvailable()) { |
| // should not happen |
| throw new NoClassDefFoundError(LOG_MANAGER_CLASS_NAME); |
| } |
| try { |
| final Method m = LOG_MANAGER_CLASS.getMethod("getLoggingMXBean"); |
| return m.invoke(null); |
| } catch (NoSuchMethodException |
| | IllegalAccessException |
| | InvocationTargetException x) { |
| throw new ExceptionInInitializerError(x); |
| } |
| } |
| |
| // The implementation object, which will be invoked through |
| // reflection. The implementation does not need to implement |
| // PlatformLoggingMXBean, but must declare the same methods |
| // with same signatures, and they must be public, with one |
| // exception: |
| // getObjectName will not be called on the implementation object, |
| // so the implementation object does not need to declare such |
| // a method. |
| final Object impl = getMXBeanImplementation(); |
| final Map<String, Method> methods = initMethodMap(impl); |
| |
| LoggingMXBeanAccess() { |
| } |
| |
| <T> T invoke(String methodName, Object... args) { |
| Method m = methods.get(methodName); |
| if (m == null) { |
| throw new UnsupportedOperationException(methodName); |
| } |
| try { |
| @SuppressWarnings("unchecked") |
| T result = (T) m.invoke(impl, args); |
| return result; |
| } catch (IllegalAccessException ex) { |
| throw new UnsupportedOperationException(ex); |
| } catch (InvocationTargetException ex) { |
| throw unwrap(ex); |
| } |
| } |
| |
| private static RuntimeException unwrap(InvocationTargetException x) { |
| Throwable t = x.getCause(); |
| if (t instanceof RuntimeException) { |
| return (RuntimeException)t; |
| } |
| if (t instanceof Error) { |
| throw (Error)t; |
| } |
| return new UndeclaredThrowableException(t == null ? x : t); |
| } |
| |
| |
| } |
| |
| static final class PlatformLoggingImpl implements PlatformLoggingMXBean { |
| |
| private final LoggingMXBeanAccess loggingAccess; |
| private PlatformLoggingImpl(LoggingMXBeanAccess loggingAccess) { |
| this.loggingAccess = loggingAccess; |
| } |
| |
| private volatile ObjectName objname; // created lazily |
| @Override |
| public ObjectName getObjectName() { |
| ObjectName result = objname; |
| if (result == null) { |
| synchronized (this) { |
| result = objname; |
| if (result == null) { |
| result = Util.newObjectName(LOGGING_MXBEAN_NAME); |
| objname = result; |
| } |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| public java.util.List<String> getLoggerNames() { |
| return loggingAccess.invoke("getLoggerNames"); |
| } |
| |
| @Override |
| public String getLoggerLevel(String loggerName) { |
| return loggingAccess.invoke("getLoggerLevel", loggerName); |
| } |
| |
| @Override |
| public void setLoggerLevel(String loggerName, String levelName) { |
| loggingAccess.invoke("setLoggerLevel", loggerName, levelName); |
| } |
| |
| @Override |
| public String getParentLoggerName(String loggerName) { |
| return loggingAccess.invoke("getParentLoggerName", loggerName); |
| } |
| |
| private static PlatformLoggingImpl getInstance() { |
| return new PlatformLoggingImpl(new LoggingMXBeanAccess()); |
| } |
| |
| static final PlatformLoggingMXBean MBEAN = getInstance(); |
| } |
| |
| private static List<BufferPoolMXBean> bufferPools = null; |
| public static synchronized List<BufferPoolMXBean> getBufferPoolMXBeans() { |
| if (bufferPools == null) { |
| bufferPools = new ArrayList<>(2); |
| bufferPools.add(createBufferPoolMXBean(SharedSecrets.getJavaNioAccess() |
| .getDirectBufferPool())); |
| bufferPools.add(createBufferPoolMXBean(sun.nio.ch.FileChannelImpl |
| .getMappedBufferPool())); |
| } |
| return bufferPools; |
| } |
| |
| private final static String BUFFER_POOL_MXBEAN_NAME = "java.nio:type=BufferPool"; |
| |
| /** |
| * Creates management interface for the given buffer pool. |
| */ |
| private static BufferPoolMXBean |
| createBufferPoolMXBean(final JavaNioAccess.BufferPool pool) |
| { |
| return new BufferPoolMXBean() { |
| private volatile ObjectName objname; // created lazily |
| @Override |
| public ObjectName getObjectName() { |
| ObjectName result = objname; |
| if (result == null) { |
| synchronized (this) { |
| result = objname; |
| if (result == null) { |
| result = Util.newObjectName(BUFFER_POOL_MXBEAN_NAME + |
| ",name=" + pool.getName()); |
| objname = result; |
| } |
| } |
| } |
| return result; |
| } |
| @Override |
| public String getName() { |
| return pool.getName(); |
| } |
| @Override |
| public long getCount() { |
| return pool.getCount(); |
| } |
| @Override |
| public long getTotalCapacity() { |
| return pool.getTotalCapacity(); |
| } |
| @Override |
| public long getMemoryUsed() { |
| return pool.getMemoryUsed(); |
| } |
| }; |
| } |
| |
| private static HotspotRuntime hsRuntimeMBean = null; |
| private static HotspotClassLoading hsClassMBean = null; |
| private static HotspotThread hsThreadMBean = null; |
| private static HotspotCompilation hsCompileMBean = null; |
| private static HotspotMemory hsMemoryMBean = null; |
| |
| /** |
| * This method is for testing only. |
| */ |
| public static synchronized HotspotRuntimeMBean getHotspotRuntimeMBean() { |
| if (hsRuntimeMBean == null) { |
| hsRuntimeMBean = new HotspotRuntime(jvm); |
| } |
| return hsRuntimeMBean; |
| } |
| |
| /** |
| * This method is for testing only. |
| */ |
| public static synchronized HotspotClassLoadingMBean getHotspotClassLoadingMBean() { |
| if (hsClassMBean == null) { |
| hsClassMBean = new HotspotClassLoading(jvm); |
| } |
| return hsClassMBean; |
| } |
| |
| /** |
| * This method is for testing only. |
| */ |
| public static synchronized HotspotThreadMBean getHotspotThreadMBean() { |
| if (hsThreadMBean == null) { |
| hsThreadMBean = new HotspotThread(jvm); |
| } |
| return hsThreadMBean; |
| } |
| |
| /** |
| * This method is for testing only. |
| */ |
| public static synchronized HotspotMemoryMBean getHotspotMemoryMBean() { |
| if (hsMemoryMBean == null) { |
| hsMemoryMBean = new HotspotMemory(jvm); |
| } |
| return hsMemoryMBean; |
| } |
| |
| /** |
| * This method is for testing only. |
| */ |
| public static synchronized HotspotCompilationMBean getHotspotCompilationMBean() { |
| if (hsCompileMBean == null) { |
| hsCompileMBean = new HotspotCompilation(jvm); |
| } |
| return hsCompileMBean; |
| } |
| |
| /** |
| * Registers a given MBean if not registered in the MBeanServer; |
| * otherwise, just return. |
| */ |
| private static void addMBean(MBeanServer mbs, Object mbean, String mbeanName) { |
| try { |
| final ObjectName objName = Util.newObjectName(mbeanName); |
| |
| // inner class requires these fields to be final |
| final MBeanServer mbs0 = mbs; |
| final Object mbean0 = mbean; |
| AccessController.doPrivileged(new PrivilegedExceptionAction<Void>() { |
| public Void run() throws MBeanRegistrationException, |
| NotCompliantMBeanException { |
| try { |
| mbs0.registerMBean(mbean0, objName); |
| return null; |
| } catch (InstanceAlreadyExistsException e) { |
| // if an instance with the object name exists in |
| // the MBeanServer ignore the exception |
| } |
| return null; |
| } |
| }); |
| } catch (PrivilegedActionException e) { |
| throw Util.newException(e.getException()); |
| } |
| } |
| |
| private final static String HOTSPOT_CLASS_LOADING_MBEAN_NAME = |
| "sun.management:type=HotspotClassLoading"; |
| |
| private final static String HOTSPOT_COMPILATION_MBEAN_NAME = |
| "sun.management:type=HotspotCompilation"; |
| |
| private final static String HOTSPOT_MEMORY_MBEAN_NAME = |
| "sun.management:type=HotspotMemory"; |
| |
| private static final String HOTSPOT_RUNTIME_MBEAN_NAME = |
| "sun.management:type=HotspotRuntime"; |
| |
| private final static String HOTSPOT_THREAD_MBEAN_NAME = |
| "sun.management:type=HotspotThreading"; |
| |
| static void registerInternalMBeans(MBeanServer mbs) { |
| // register all internal MBeans if not registered |
| // No exception is thrown if a MBean with that object name |
| // already registered |
| addMBean(mbs, getHotspotClassLoadingMBean(), |
| HOTSPOT_CLASS_LOADING_MBEAN_NAME); |
| addMBean(mbs, getHotspotMemoryMBean(), |
| HOTSPOT_MEMORY_MBEAN_NAME); |
| addMBean(mbs, getHotspotRuntimeMBean(), |
| HOTSPOT_RUNTIME_MBEAN_NAME); |
| addMBean(mbs, getHotspotThreadMBean(), |
| HOTSPOT_THREAD_MBEAN_NAME); |
| |
| // CompilationMBean may not exist |
| if (getCompilationMXBean() != null) { |
| addMBean(mbs, getHotspotCompilationMBean(), |
| HOTSPOT_COMPILATION_MBEAN_NAME); |
| } |
| } |
| |
| private static void unregisterMBean(MBeanServer mbs, String mbeanName) { |
| try { |
| final ObjectName objName = Util.newObjectName(mbeanName); |
| |
| // inner class requires these fields to be final |
| final MBeanServer mbs0 = mbs; |
| AccessController.doPrivileged(new PrivilegedExceptionAction<Void>() { |
| public Void run() throws MBeanRegistrationException, |
| RuntimeOperationsException { |
| try { |
| mbs0.unregisterMBean(objName); |
| } catch (InstanceNotFoundException e) { |
| // ignore exception if not found |
| } |
| return null; |
| } |
| }); |
| } catch (PrivilegedActionException e) { |
| throw Util.newException(e.getException()); |
| } |
| } |
| |
| static void unregisterInternalMBeans(MBeanServer mbs) { |
| // unregister all internal MBeans |
| unregisterMBean(mbs, HOTSPOT_CLASS_LOADING_MBEAN_NAME); |
| unregisterMBean(mbs, HOTSPOT_MEMORY_MBEAN_NAME); |
| unregisterMBean(mbs, HOTSPOT_RUNTIME_MBEAN_NAME); |
| unregisterMBean(mbs, HOTSPOT_THREAD_MBEAN_NAME); |
| |
| // CompilationMBean may not exist |
| if (getCompilationMXBean() != null) { |
| unregisterMBean(mbs, HOTSPOT_COMPILATION_MBEAN_NAME); |
| } |
| } |
| |
| public static boolean isThreadSuspended(int state) { |
| return ((state & JMM_THREAD_STATE_FLAG_SUSPENDED) != 0); |
| } |
| |
| public static boolean isThreadRunningNative(int state) { |
| return ((state & JMM_THREAD_STATE_FLAG_NATIVE) != 0); |
| } |
| |
| public static Thread.State toThreadState(int state) { |
| // suspended and native bits may be set in state |
| int threadStatus = state & ~JMM_THREAD_STATE_FLAG_MASK; |
| return jdk.internal.misc.VM.toThreadState(threadStatus); |
| } |
| |
| // These values are defined in jmm.h |
| private static final int JMM_THREAD_STATE_FLAG_MASK = 0xFFF00000; |
| private static final int JMM_THREAD_STATE_FLAG_SUSPENDED = 0x00100000; |
| private static final int JMM_THREAD_STATE_FLAG_NATIVE = 0x00400000; |
| |
| // Invoked by the VM |
| private static MemoryPoolMXBean createMemoryPool |
| (String name, boolean isHeap, long uThreshold, long gcThreshold) { |
| return new MemoryPoolImpl(name, isHeap, uThreshold, gcThreshold); |
| } |
| |
| private static MemoryManagerMXBean createMemoryManager(String name) { |
| return new MemoryManagerImpl(name); |
| } |
| |
| private static GarbageCollectorMXBean |
| createGarbageCollector(String name, String type) { |
| |
| // ignore type parameter which is for future extension |
| return new GarbageCollectorImpl(name); |
| } |
| } |