changeset 1137:6ed878e5a5d4

Merge
author dfuchs
date Tue, 10 Mar 2009 14:29:47 +0100
parents 3265fb461090 e1d79edaf7a0
children 255dcd4f19b6
files
diffstat 7 files changed, 180 insertions(+), 48 deletions(-) [+]
line wrap: on
line diff
--- a/src/share/classes/com/sun/jmx/remote/internal/ClientNotifForwarder.java	Mon Mar 09 23:50:11 2009 +0100
+++ b/src/share/classes/com/sun/jmx/remote/internal/ClientNotifForwarder.java	Tue Mar 10 14:29:47 2009 +0100
@@ -22,7 +22,6 @@
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */
-
 package com.sun.jmx.remote.internal;
 
 import java.io.IOException;
@@ -34,6 +33,7 @@
 import java.util.Map;
 import java.util.concurrent.Executor;
 
+import java.security.AccessControlContext;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
 import javax.security.auth.Subject;
@@ -54,6 +54,9 @@
 
 
 public abstract class ClientNotifForwarder {
+
+    private final AccessControlContext acc;
+
     public ClientNotifForwarder(Map env) {
         this(null, env);
     }
@@ -87,6 +90,8 @@
             this.command = command;
             if (thread == null) {
                 thread = new Thread() {
+
+                    @Override
                     public void run() {
                         while (true) {
                             Runnable r;
@@ -130,6 +135,7 @@
 
         this.defaultClassLoader = defaultClassLoader;
         this.executor = ex;
+        this.acc = AccessController.getContext();
     }
 
     /**
@@ -390,28 +396,85 @@
         setState(TERMINATED);
     }
 
-// -------------------------------------------------
-// private classes
-// -------------------------------------------------
+
+    // -------------------------------------------------
+    // private classes
+    // -------------------------------------------------
     //
+
     private class NotifFetcher implements Runnable {
+
+        private volatile boolean alreadyLogged = false;
+
+        private void logOnce(String msg, SecurityException x) {
+            if (alreadyLogged) return;
+            // Log only once.
+            logger.config("setContextClassLoader",msg);
+            if (x != null) logger.fine("setContextClassLoader", x);
+            alreadyLogged = true;
+        }
+
+        // Set new context class loader, returns previous one.
+        private final ClassLoader setContextClassLoader(final ClassLoader loader) {
+            final AccessControlContext ctxt = ClientNotifForwarder.this.acc;
+            // if ctxt is null, log a config message and throw a
+            // SecurityException.
+            if (ctxt == null) {
+                logOnce("AccessControlContext must not be null.",null);
+                throw new SecurityException("AccessControlContext must not be null");
+            }
+            return AccessController.doPrivileged(
+                new PrivilegedAction<ClassLoader>() {
+                    public ClassLoader run() {
+                        try {
+                            // get context class loader - may throw
+                            // SecurityException - though unlikely.
+                            final ClassLoader previous =
+                                Thread.currentThread().getContextClassLoader();
+
+                            // if nothing needs to be done, break here...
+                            if (loader == previous) return previous;
+
+                            // reset context class loader - may throw
+                            // SecurityException
+                            Thread.currentThread().setContextClassLoader(loader);
+                            return previous;
+                        } catch (SecurityException x) {
+                            logOnce("Permission to set ContextClassLoader missing. " +
+                                    "Notifications will not be dispatched. " +
+                                    "Please check your Java policy configuration: " +
+                                    x, x);
+                            throw x;
+                        }
+                    }
+                }, ctxt);
+        }
+
         public void run() {
+            final ClassLoader previous;
+            if (defaultClassLoader != null) {
+                previous = setContextClassLoader(defaultClassLoader);
+            } else {
+                previous = null;
+            }
+            try {
+                doRun();
+            } finally {
+                if (defaultClassLoader != null) {
+                    setContextClassLoader(previous);
+                }
+            }
+        }
+
+        private void doRun() {
             synchronized (ClientNotifForwarder.this) {
                 currentFetchThread = Thread.currentThread();
 
-                if (state == STARTING)
+                if (state == STARTING) {
                     setState(STARTED);
+                }
             }
 
-            if (defaultClassLoader != null) {
-                AccessController.doPrivileged(new PrivilegedAction<Void>() {
-                        public Void run() {
-                            Thread.currentThread().
-                                setContextClassLoader(defaultClassLoader);
-                            return null;
-                        }
-                    });
-            }
 
             NotificationResult nr = null;
             if (!shouldStop() && (nr = fetchNotifs()) != null) {
@@ -444,8 +507,9 @@
                         // check if an mbean unregistration notif
                         if (!listenerID.equals(mbeanRemovedNotifID)) {
                             final ClientListenerInfo li = infoList.get(listenerID);
-                            if (li != null)
-                                listeners.put(listenerID,li);
+                            if (li != null) {
+                                listeners.put(listenerID, li);
+                            }
                             continue;
                         }
                         final Notification notif = tn.getNotification();
@@ -786,9 +850,7 @@
     private long clientSequenceNumber = -1;
     private final int maxNotifications;
     private final long timeout;
-
     private Integer mbeanRemovedNotifID = null;
-
     private Thread currentFetchThread;
 
     // state
--- a/src/share/classes/javax/management/monitor/CounterMonitor.java	Mon Mar 09 23:50:11 2009 +0100
+++ b/src/share/classes/javax/management/monitor/CounterMonitor.java	Tue Mar 10 14:29:47 2009 +0100
@@ -596,7 +596,7 @@
      * types sent by the counter monitor.
      */
     public MBeanNotificationInfo[] getNotificationInfo() {
-        return notifsInfo;
+        return notifsInfo.clone();
     }
 
     /*
--- a/src/share/classes/javax/management/monitor/GaugeMonitor.java	Mon Mar 09 23:50:11 2009 +0100
+++ b/src/share/classes/javax/management/monitor/GaugeMonitor.java	Tue Mar 10 14:29:47 2009 +0100
@@ -478,7 +478,7 @@
      * types sent by the gauge monitor.
      */
     public MBeanNotificationInfo[] getNotificationInfo() {
-        return notifsInfo;
+        return notifsInfo.clone();
     }
 
     /*
--- a/src/share/classes/javax/management/monitor/Monitor.java	Mon Mar 09 23:50:11 2009 +0100
+++ b/src/share/classes/javax/management/monitor/Monitor.java	Tue Mar 10 14:29:47 2009 +0100
@@ -32,9 +32,11 @@
 import java.security.AccessControlContext;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
+import java.security.ProtectionDomain;
 import java.util.List;
+import java.util.Map;
+import java.util.WeakHashMap;
 import java.util.concurrent.CopyOnWriteArrayList;
-import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
 import java.util.concurrent.LinkedBlockingQueue;
@@ -164,7 +166,10 @@
     /**
      * AccessControlContext of the Monitor.start() caller.
      */
-    private AccessControlContext acc;
+    private static final AccessControlContext noPermissionsACC =
+            new AccessControlContext(
+            new ProtectionDomain[] {new ProtectionDomain(null, null)});
+    private volatile AccessControlContext acc = noPermissionsACC;
 
     /**
      * Scheduler Service.
@@ -174,14 +179,20 @@
             new DaemonThreadFactory("Scheduler"));
 
     /**
+     * Map containing the thread pool executor per thread group.
+     */
+    private static final Map<ThreadPoolExecutor, Void> executors =
+            new WeakHashMap<ThreadPoolExecutor, Void>();
+
+    /**
+     * Lock for executors map.
+     */
+    private static final Object executorsLock = new Object();
+
+    /**
      * Maximum Pool Size
      */
     private static final int maximumPoolSize;
-
-    /**
-     * Executor Service.
-     */
-    private static final ExecutorService executor;
     static {
         final String maximumPoolSizeSysProp = "jmx.x.monitor.maximum.pool.size";
         final String maximumPoolSizeStr = AccessController.doPrivileged(
@@ -211,22 +222,9 @@
                 maximumPoolSize = maximumPoolSizeTmp;
             }
         }
-        executor = new ThreadPoolExecutor(
-                maximumPoolSize,
-                maximumPoolSize,
-                60L,
-                TimeUnit.SECONDS,
-                new LinkedBlockingQueue<Runnable>(),
-                new DaemonThreadFactory("Executor"));
-        ((ThreadPoolExecutor)executor).allowCoreThreadTimeOut(true);
     }
 
     /**
-     * Monitor task to be executed by the Executor Service.
-     */
-    private final MonitorTask monitorTask = new MonitorTask();
-
-    /**
      * Future associated to the current monitor task.
      */
     private Future<?> monitorFuture;
@@ -234,7 +232,7 @@
     /**
      * Scheduler task to be executed by the Scheduler Service.
      */
-    private final SchedulerTask schedulerTask = new SchedulerTask(monitorTask);
+    private final SchedulerTask schedulerTask = new SchedulerTask();
 
     /**
      * ScheduledFuture associated to the current scheduler task.
@@ -720,6 +718,7 @@
             // Start the scheduler.
             //
             cleanupFutures();
+            schedulerTask.setMonitorTask(new MonitorTask());
             schedulerFuture = scheduler.schedule(schedulerTask,
                                                  getGranularityPeriod(),
                                                  TimeUnit.MILLISECONDS);
@@ -749,7 +748,7 @@
 
             // Reset the AccessControlContext.
             //
-            acc = null;
+            acc = noPermissionsACC;
 
             // Reset the complex type attribute information
             // such that it is recalculated again.
@@ -1468,7 +1467,7 @@
      */
     private class SchedulerTask implements Runnable {
 
-        private Runnable task = null;
+        private MonitorTask task;
 
         /*
          * ------------------------------------------
@@ -1476,7 +1475,16 @@
          * ------------------------------------------
          */
 
-        public SchedulerTask(Runnable task) {
+        public SchedulerTask() {
+        }
+
+        /*
+         * ------------------------------------------
+         *  GETTERS/SETTERS
+         * ------------------------------------------
+         */
+
+        public void setMonitorTask(MonitorTask task) {
             this.task = task;
         }
 
@@ -1488,7 +1496,7 @@
 
         public void run() {
             synchronized (Monitor.this) {
-                Monitor.this.monitorFuture = executor.submit(task);
+                Monitor.this.monitorFuture = task.submit();
             }
         }
     }
@@ -1501,6 +1509,8 @@
      */
     private class MonitorTask implements Runnable {
 
+        private ThreadPoolExecutor executor;
+
         /*
          * ------------------------------------------
          *  CONSTRUCTORS
@@ -1508,6 +1518,38 @@
          */
 
         public MonitorTask() {
+            // Find out if there's already an existing executor for the calling
+            // thread and reuse it. Otherwise, create a new one and store it in
+            // the executors map. If there is a SecurityManager, the group of
+            // System.getSecurityManager() is used, else the group of the thread
+            // instantiating this MonitorTask, i.e. the group of the thread that
+            // calls "Monitor.start()".
+            SecurityManager s = System.getSecurityManager();
+            ThreadGroup group = (s != null) ? s.getThreadGroup() :
+                Thread.currentThread().getThreadGroup();
+            synchronized (executorsLock) {
+                for (ThreadPoolExecutor e : executors.keySet()) {
+                    DaemonThreadFactory tf =
+                            (DaemonThreadFactory) e.getThreadFactory();
+                    ThreadGroup tg = tf.getThreadGroup();
+                    if (tg == group) {
+                        executor = e;
+                        break;
+                    }
+                }
+                if (executor == null) {
+                    executor = new ThreadPoolExecutor(
+                            maximumPoolSize,
+                            maximumPoolSize,
+                            60L,
+                            TimeUnit.SECONDS,
+                            new LinkedBlockingQueue<Runnable>(),
+                            new DaemonThreadFactory("ThreadGroup<" +
+                            group.getName() + "> Executor", group));
+                    executor.allowCoreThreadTimeOut(true);
+                    executors.put(executor, null);
+                }
+            }
         }
 
         /*
@@ -1516,12 +1558,18 @@
          * ------------------------------------------
          */
 
+        public Future<?> submit() {
+            return executor.submit(this);
+        }
+
         public void run() {
             final ScheduledFuture<?> sf;
+            final AccessControlContext ac;
             synchronized (Monitor.this) {
                 sf = Monitor.this.schedulerFuture;
+                ac = Monitor.this.acc;
             }
-            AccessController.doPrivileged(new PrivilegedAction<Void>() {
+            PrivilegedAction<Void> action = new PrivilegedAction<Void>() {
                 public Void run() {
                     if (Monitor.this.isActive()) {
                         final int an[] = alreadyNotifieds;
@@ -1534,7 +1582,11 @@
                     }
                     return null;
                 }
-            }, Monitor.this.acc);
+            };
+            if (ac == null) {
+                throw new SecurityException("AccessControlContext cannot be null");
+            }
+            AccessController.doPrivileged(action, ac);
             synchronized (Monitor.this) {
                 if (Monitor.this.isActive() &&
                     Monitor.this.schedulerFuture == sf) {
@@ -1574,6 +1626,15 @@
             namePrefix = "JMX Monitor " + poolName + " Pool [Thread-";
         }
 
+        public DaemonThreadFactory(String poolName, ThreadGroup threadGroup) {
+            group = threadGroup;
+            namePrefix = "JMX Monitor " + poolName + " Pool [Thread-";
+        }
+
+        public ThreadGroup getThreadGroup() {
+            return group;
+        }
+
         public Thread newThread(Runnable r) {
             Thread t = new Thread(group,
                                   r,
--- a/src/share/classes/javax/management/monitor/StringMonitor.java	Mon Mar 09 23:50:11 2009 +0100
+++ b/src/share/classes/javax/management/monitor/StringMonitor.java	Tue Mar 10 14:29:47 2009 +0100
@@ -184,6 +184,7 @@
      * @return The derived gauge of the specified object.
      *
      */
+    @Override
     public synchronized String getDerivedGauge(ObjectName object) {
         return (String) super.getDerivedGauge(object);
     }
@@ -199,6 +200,7 @@
      * @return The derived gauge timestamp of the specified object.
      *
      */
+    @Override
     public synchronized long getDerivedGaugeTimeStamp(ObjectName object) {
         return super.getDerivedGaugeTimeStamp(object);
     }
@@ -341,8 +343,9 @@
      * the Java class of the notification and the notification types sent by
      * the string monitor.
      */
+    @Override
     public MBeanNotificationInfo[] getNotificationInfo() {
-        return notifsInfo;
+        return notifsInfo.clone();
     }
 
     /*
--- a/src/share/classes/sun/net/httpserver/Request.java	Mon Mar 09 23:50:11 2009 +0100
+++ b/src/share/classes/sun/net/httpserver/Request.java	Tue Mar 10 14:29:47 2009 +0100
@@ -52,6 +52,9 @@
         os = rawout;
         do {
             startLine = readLine();
+            if (startLine == null) {
+                return;
+            }
             /* skip blank lines */
         } while (startLine.equals (""));
     }
--- a/src/share/classes/sun/net/httpserver/ServerImpl.java	Mon Mar 09 23:50:11 2009 +0100
+++ b/src/share/classes/sun/net/httpserver/ServerImpl.java	Tue Mar 10 14:29:47 2009 +0100
@@ -441,6 +441,7 @@
                         rawin = sslStreams.getInputStream();
                         rawout = sslStreams.getOutputStream();
                         engine = sslStreams.getSSLEngine();
+                        connection.sslStreams = sslStreams;
                     } else {
                         rawin = new BufferedInputStream(
                             new Request.ReadStream (
@@ -450,6 +451,8 @@
                             ServerImpl.this, chan
                         );
                     }
+                    connection.raw = rawin;
+                    connection.rawout = rawout;
                 }
                 Request req = new Request (rawin, rawout);
                 requestLine = req.requestLine();