src/share/classes/sun/management/ManagementFactoryHelper.java

@@ -25,24 +25,22 @@
 
 package sun.management;
 
 import java.lang.management.*;
 
-import javax.management.MBeanServer;
-import javax.management.ObjectName;
 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.nio.BufferPoolMXBean;
 import java.security.AccessController;
 import java.security.PrivilegedActionException;
 import java.security.PrivilegedExceptionAction;
 import sun.security.action.LoadLibraryAction;
 
-import java.util.logging.PlatformLoggingMXBean;
 import sun.util.logging.LoggingSupport;
 
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;

@@ -137,21 +135,38 @@
             }
         }
         return result;
     }
 
-    public static List<PlatformLoggingMXBean> getLoggingMXBean() {
+    public static PlatformLoggingMXBean getPlatformLoggingMXBean() {
         if (LoggingSupport.isAvailable()) {
-            return Collections.singletonList(createPlatformLoggingMXBean());
+            return PlatformLoggingImpl.instance;
         } else {
-            return Collections.emptyList();
+            return null;
         }
     }
 
-    private final static String LOGGING_MXBEAN_NAME = "java.util.logging:type=Logging";
-    private static PlatformLoggingMXBean createPlatformLoggingMXBean() {
-        return new PlatformLoggingMXBean() {
+    // 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-complaint MXBean
+    // 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) {

@@ -182,21 +197,23 @@
 
             @Override
             public String getParentLoggerName(String loggerName) {
                 return LoggingSupport.getParentLoggerName(loggerName);
             }
-        };
     }
 
-    public static List<BufferPoolMXBean> getBufferPoolMXBeans() {
-        List<BufferPoolMXBean> pools = new ArrayList<BufferPoolMXBean>(2);
-        pools.add(createBufferPoolMXBean(sun.misc.SharedSecrets.getJavaNioAccess()
+    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()));
-        pools.add(createBufferPoolMXBean(sun.nio.ch.FileChannelImpl
+            bufferPools.add(createBufferPoolMXBean(sun.nio.ch.FileChannelImpl
             .getMappedBufferPool()));
-        return pools;
     }
+        return bufferPools;
+    }
 
     private final static String BUFFER_POOL_MXBEAN_NAME = "java.nio:type=BufferPool";
 
     /**
      * Creates management interface for the given buffer pool.