/*
* Copyright (c) 2003, 2008, 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 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 sun.security.action.LoadLibraryAction;
import sun.util.logging.LoggingSupport;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.sun.management.OSMBeanFactory;
import com.sun.management.HotSpotDiagnosticMXBean;
import static java.lang.management.ManagementFactory.*;
/**
* ManagementFactoryHelper provides static factory methods to create
* instances of the management interface.
*/
public class ManagementFactoryHelper {
private ManagementFactoryHelper() {};
private static VMManagement jvm;
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 OperatingSystemImpl 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 = (OperatingSystemImpl)
OSMBeanFactory.getOperatingSystemMXBean(jvm);
}
return osMBean;
}
public static List<MemoryPoolMXBean> getMemoryPoolMXBeans() {
MemoryPoolMXBean[] pools = MemoryImpl.getMemoryPools();
List<MemoryPoolMXBean> list = new ArrayList<MemoryPoolMXBean>(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<MemoryManagerMXBean>(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<GarbageCollectorMXBean>(mgrs.length);
for (MemoryManagerMXBean m : mgrs) {
if (GarbageCollectorMXBean.class.isInstance(m)) {
result.add(GarbageCollectorMXBean.class.cast(m));
}
}
return result;
}
public static PlatformLoggingMXBean getPlatformLoggingMXBean() {
if (LoggingSupport.isAvailable()) {
return PlatformLoggingImpl.instance;
} else {
return null;
}
}
// The logging MXBean object is an instance of
// PlatformLoggingMXBean and java.util.logging.LoggingMXBean
// but it can't directly implement two MXBean interfaces
// as a compliant MXBean implements exactly one MXBean interface,
// or if it implements one interface that is a subinterface of
// all the others; otherwise, it is a non-compliant MXBean
// and MBeanServer will throw NotCompliantMBeanException.
// See the Definition of an MXBean section in javax.management.MXBean spec.
//
// To create a compliant logging MXBean, define a LoggingMXBean interface
// that extend PlatformLoggingMXBean and j.u.l.LoggingMXBean
interface LoggingMXBean
extends PlatformLoggingMXBean, java.util.logging.LoggingMXBean {
}
static class PlatformLoggingImpl implements LoggingMXBean
{
final static PlatformLoggingMXBean instance = new PlatformLoggingImpl();
final static String LOGGING_MXBEAN_NAME = "java.util.logging:type=Logging";
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 LoggingSupport.getLoggerNames();
}
@Override
public String getLoggerLevel(String loggerName) {
return LoggingSupport.getLoggerLevel(loggerName);
}
@Override
public void setLoggerLevel(String loggerName, String levelName) {
LoggingSupport.setLoggerLevel(loggerName, levelName);
}
@Override
public String getParentLoggerName(String loggerName) {
return LoggingSupport.getParentLoggerName(loggerName);
}
}
private static List<BufferPoolMXBean> bufferPools = null;
public static synchronized List<BufferPoolMXBean> getBufferPoolMXBeans() {
if (bufferPools == null) {
bufferPools = new ArrayList<>(2);
bufferPools.add(createBufferPoolMXBean(sun.misc.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 sun.misc.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 HotSpotDiagnostic hsDiagMBean = null;
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;
public static synchronized HotSpotDiagnosticMXBean getDiagnosticMXBean() {
if (hsDiagMBean == null) {
hsDiagMBean = new HotSpotDiagnostic();
}
return hsDiagMBean;
}
/**
* 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);
}
}
static {
AccessController.doPrivileged(new LoadLibraryAction("management"));
jvm = new VMManagementImpl();
}
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 sun.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;
}