title: Java VisualVM hangs connecting to locally process launched from eclipse
body: <p>I'm trying to connect jvisualvm installed with jdk1.7.0_04 to a locally running java process.  When I do this, jvisualvm shows a progress bar in the bottom left saying its connecting to the process, and then never responds again.</p>
  
  <p>The java process I'm trying to connect to is still fine and works as normal.</p>
  
  <p>I can get a threaddump of visualvm using jstack, that shows 1 blocked thread.</p>
  
  <pre><code>AWT-EventQueue-0" prio=6 tid=0x04a1a000 nid=0x1110 waiting for monitor entry [0x062af000]
     java.lang.Thread.State: BLOCKED (on object monitor)
          at com.sun.tools.visualvm.core.model.ModelFactory.getModel(ModelFactory.java:76)
          - waiting to lock &lt;0x289584f0&gt; (a com.sun.tools.visualvm.jvmstat.application.JvmstatApplication)
          at com.sun.tools.visualvm.core.datasource.descriptor.DataSourceDescriptorFactory.getDescriptor(DataSourceDescriptorFactory.java:49)
  </code></pre>
  
  <p>I can't connect to any java process, even a trivial one that just waits for user input.  I also had the same problem with jdk1.6.0_32.</p>
  
  <p>-- Updates
  I've since discovered this only affects java processes I launch from eclipse.  It's possible to get the command eclipse launched from the debug perspective and opening the process properties.  Launching the same process from the command prompt (using the command I copied from eclipse) allows connections from jvisualvm and jconsole.  </p>
  
  <p>Full thread dump:</p>
  
  <pre><code>2012-05-10 13:18:47
  Full thread dump Java HotSpot(TM) Client VM (23.0-b21 mixed mode, sharing):
  
  "Inactive RequestProcessor thread [Was:TimedSoftReference/org.openide.util.TimedSoftReference]" daemon prio=2 tid=0x00e12800 nid=0xa5c in Object.wait() [0x0587f000]
  java.lang.Thread.State: TIMED_WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x22d6a578&gt; (a java.lang.Object)
      at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1880)
      - locked &lt;0x22d6a578&gt; (a java.lang.Object)
  
  Locked ownable synchronizers:
      - None
  
  "pool-4-thread-1" prio=6 tid=0x063ddc00 nid=0x1a70 waiting on condition [0x0750f000]
  java.lang.Thread.State: WAITING (parking)
      at sun.misc.Unsafe.park(Native Method)
      - parking to wait for  &lt;0x23440068&gt; (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
      at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
      at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
      at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
      at java.lang.Thread.run(Thread.java:722)
  
  Locked ownable synchronizers:
      - None
  
  "pool-3-thread-1" prio=6 tid=0x00fe7400 nid=0x16a0 waiting on condition [0x05a7f000]
  java.lang.Thread.State: WAITING (parking)
      at sun.misc.Unsafe.park(Native Method)
      - parking to wait for  &lt;0x28a7ccd8&gt; (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
      at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
      at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
      at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1043)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1103)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
      at java.lang.Thread.run(Thread.java:722)
  
  Locked ownable synchronizers:
      - None
  
  "Timer-1" daemon prio=2 tid=0x04c63800 nid=0x1f00 in Object.wait() [0x07f1f000]
  java.lang.Thread.State: TIMED_WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x289e6688&gt; (a java.util.TaskQueue)
      at java.util.TimerThread.mainLoop(Timer.java:552)
      - locked &lt;0x289e6688&gt; (a java.util.TaskQueue)
      at java.util.TimerThread.run(Timer.java:505)
  
  Locked ownable synchronizers:
      - None
  
  "TimerQueue" daemon prio=6 tid=0x04b82c00 nid=0x124 waiting on condition [0x070df000]
  java.lang.Thread.State: TIMED_WAITING (parking)
      at sun.misc.Unsafe.park(Native Method)
      - parking to wait for  &lt;0x285f8b20&gt; (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
      at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082)
      at java.util.concurrent.DelayQueue.take(DelayQueue.java:220)
      at javax.swing.TimerQueue.run(TimerQueue.java:171)
      at java.lang.Thread.run(Thread.java:722)
  
  Locked ownable synchronizers:
      - &lt;0x2862c110&gt; (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
  
  "Thread-3" daemon prio=6 tid=0x04b7b400 nid=0x1c18 in Object.wait() [0x06edf000]
  java.lang.Thread.State: WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x28562950&gt; (a java.util.LinkedList)
      at java.lang.Object.wait(Object.java:503)
      at java.util.prefs.AbstractPreferences$EventDispatchThread.run(AbstractPreferences.java:1476)
      - locked &lt;0x28562950&gt; (a java.util.LinkedList)
  
  Locked ownable synchronizers:
      - None
  
  "DataSourceWindowManager Processor" daemon prio=2 tid=0x04b28c00 nid=0x11e0 runnable [0x06cdf000]
  java.lang.Thread.State: RUNNABLE
      at sun.tools.attach.WindowsVirtualMachine.connectPipe(Native Method)
      at sun.tools.attach.WindowsVirtualMachine.execute(WindowsVirtualMachine.java:100)
      at sun.tools.attach.HotSpotVirtualMachine.loadAgentLibrary(HotSpotVirtualMachine.java:58)
      at sun.tools.attach.HotSpotVirtualMachine.loadAgentLibrary(HotSpotVirtualMachine.java:79)
      at sun.tools.attach.HotSpotVirtualMachine.loadAgent(HotSpotVirtualMachine.java:103)
      at com.sun.tools.visualvm.jmx.impl.JmxModelImpl$LocalVirtualMachine.loadManagementAgent(JmxModelImpl.java:676)
      - locked &lt;0x23440218&gt; (a com.sun.tools.visualvm.jmx.impl.JmxModelImpl$LocalVirtualMachine)
      at com.sun.tools.visualvm.jmx.impl.JmxModelImpl$LocalVirtualMachine.startManagementAgent(JmxModelImpl.java:633)
      - locked &lt;0x23440218&gt; (a com.sun.tools.visualvm.jmx.impl.JmxModelImpl$LocalVirtualMachine)
      at com.sun.tools.visualvm.jmx.impl.JmxModelImpl$ProxyClient.tryConnect(JmxModelImpl.java:450)
      at com.sun.tools.visualvm.jmx.impl.JmxModelImpl$ProxyClient.connect(JmxModelImpl.java:420)
      at com.sun.tools.visualvm.jmx.impl.JmxModelImpl.connect(JmxModelImpl.java:200)
      at com.sun.tools.visualvm.jmx.impl.JmxModelImpl.&lt;init&gt;(JmxModelImpl.java:170)
      at com.sun.tools.visualvm.jmx.impl.JmxModelProvider.createModelFor(JmxModelProvider.java:45)
      at com.sun.tools.visualvm.jmx.impl.JmxModelProvider.createModelFor(JmxModelProvider.java:22)
      at com.sun.tools.visualvm.core.model.ModelFactory.getModel(ModelFactory.java:91)
      - locked &lt;0x289f8fe0&gt; (a com.sun.tools.visualvm.jvmstat.application.JvmstatApplication)
      at com.sun.tools.visualvm.tools.jmx.JmxModelFactory.getJmxModelFor(JmxModelFactory.java:49)
      at com.sun.tools.visualvm.application.views.threads.ApplicationThreadsViewProvider.resolveThreads(ApplicationThreadsViewProvider.java:63)
      at com.sun.tools.visualvm.application.views.threads.ApplicationThreadsViewProvider.supportsViewFor(ApplicationThreadsViewProvider.java:29)
      at com.sun.tools.visualvm.application.views.threads.ApplicationThreadsViewProvider.supportsViewFor(ApplicationThreadsViewProvider.java:25)
      at com.sun.tools.visualvm.core.ui.DataSourceViewsManager.getViews(DataSourceViewsManager.java:116)
      at com.sun.tools.visualvm.core.ui.DataSourceWindowManager.openWindowAndAddView(DataSourceWindowManager.java:169)
      at com.sun.tools.visualvm.core.ui.DataSourceWindowManager.access$000(DataSourceWindowManager.java:30)
      at com.sun.tools.visualvm.core.ui.DataSourceWindowManager$1.run(DataSourceWindowManager.java:80)
      at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1385)
      at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1929)
  
  Locked ownable synchronizers:
      - None
  
  "AWT-EventQueue-0" prio=6 tid=0x049fa000 nid=0x1b90 waiting on condition [0x062af000]
  java.lang.Thread.State: WAITING (parking)
      at sun.misc.Unsafe.park(Native Method)
      - parking to wait for  &lt;0x28310488&gt; (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
      at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)
      at java.awt.EventQueue.getNextEvent(EventQueue.java:511)
      at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:213)
      at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
      at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
      at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
  
  Locked ownable synchronizers:
      - None
  
  "AWT-Windows" daemon prio=6 tid=0x049cc000 nid=0x12b0 runnable [0x0608f000]
  java.lang.Thread.State: RUNNABLE
      at sun.awt.windows.WToolkit.eventLoop(Native Method)
      at sun.awt.windows.WToolkit.run(WToolkit.java:299)
      at java.lang.Thread.run(Thread.java:722)
  
  Locked ownable synchronizers:
      - None
  
  "AWT-Shutdown" prio=6 tid=0x049cb400 nid=0x1954 in Object.wait() [0x05e8f000]
  java.lang.Thread.State: WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x28430620&gt; (a java.lang.Object)
      at java.lang.Object.wait(Object.java:503)
      at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:287)
      - locked &lt;0x28430620&gt; (a java.lang.Object)
      at java.lang.Thread.run(Thread.java:722)
  
  Locked ownable synchronizers:
      - None
  
  "Java2D Disposer" daemon prio=10 tid=0x010a4000 nid=0x1dd4 in Object.wait() [0x05c8f000]
  java.lang.Thread.State: WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x28378258&gt; (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
      - locked &lt;0x28378258&gt; (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
      at sun.java2d.Disposer.run(Disposer.java:145)
      at java.lang.Thread.run(Thread.java:722)
  
  Locked ownable synchronizers:
      - None
  
  "CLI Requests Server" daemon prio=6 tid=0x01058000 nid=0x1a58 runnable [0x0567f000]
  java.lang.Thread.State: RUNNABLE
      at java.net.TwoStacksPlainSocketImpl.socketAccept(Native Method)
      at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398)
      at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:183)
      - locked &lt;0x28378700&gt; (a java.net.SocksSocketImpl)
      at java.net.ServerSocket.implAccept(ServerSocket.java:522)
      at java.net.ServerSocket.accept(ServerSocket.java:490)
      at org.netbeans.CLIHandler$Server.run(CLIHandler.java:1042)
  
  Locked ownable synchronizers:
      - None
  
  "Active Reference Queue Daemon" daemon prio=2 tid=0x01028c00 nid=0x17b4 in Object.wait() [0x049af000]
  java.lang.Thread.State: WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x28378878&gt; (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
      - locked &lt;0x28378878&gt; (a java.lang.ref.ReferenceQueue$Lock)
      at org.openide.util.lookup.implspi.ActiveQueue$Impl.run(ActiveQueue.java:64)
      at java.lang.Thread.run(Thread.java:722)
  
  Locked ownable synchronizers:
      - None
  
  "Timer-0" daemon prio=6 tid=0x01015400 nid=0x1ce8 in Object.wait() [0x047af000]
  java.lang.Thread.State: TIMED_WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x28378910&gt; (a java.util.TaskQueue)
      at java.util.TimerThread.mainLoop(Timer.java:552)
      - locked &lt;0x28378910&gt; (a java.util.TaskQueue)
      at java.util.TimerThread.run(Timer.java:505)
  
  Locked ownable synchronizers:
      - None
  
  "Service Thread" daemon prio=6 tid=0x00e7b400 nid=0x4a8 runnable [0x00000000]
  java.lang.Thread.State: RUNNABLE
  
  Locked ownable synchronizers:
      - None
  
  "C1 CompilerThread0" daemon prio=10 tid=0x00e76000 nid=0x13e0 waiting on condition [0x00000000]
  java.lang.Thread.State: RUNNABLE
  
  Locked ownable synchronizers:
      - None
  
  "Attach Listener" daemon prio=10 tid=0x00e74400 nid=0x448 waiting on condition [0x00000000]
  java.lang.Thread.State: RUNNABLE
  
  Locked ownable synchronizers:
      - None
  
  "Signal Dispatcher" daemon prio=10 tid=0x00e73000 nid=0x1eb4 runnable [0x00000000]
  java.lang.Thread.State: RUNNABLE
  
  Locked ownable synchronizers:
      - None
  
  "Finalizer" daemon prio=8 tid=0x00e60400 nid=0x1f28 in Object.wait() [0x03b1f000]
  java.lang.Thread.State: WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x28378b58&gt; (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
      - locked &lt;0x28378b58&gt; (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151)
      at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:177)
  
  Locked ownable synchronizers:
      - None
  
  "Reference Handler" daemon prio=10 tid=0x00e5ec00 nid=0x1d40 in Object.wait() [0x0391f000]
  java.lang.Thread.State: WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x283782e8&gt; (a java.lang.ref.Reference$Lock)
      at java.lang.Object.wait(Object.java:503)
      at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
      - locked &lt;0x283782e8&gt; (a java.lang.ref.Reference$Lock)
  
  Locked ownable synchronizers:
      - None
  
  "main" prio=6 tid=0x00db8000 nid=0x12f0 waiting on condition [0x00000000]
  java.lang.Thread.State: RUNNABLE
  
  Locked ownable synchronizers:
      - None
  
  "VM Thread" prio=10 tid=0x00e5d000 nid=0xbf8 runnable 
  
  "VM Periodic Task Thread" prio=10 tid=0x00e7e800 nid=0x1fcc waiting on condition 
  
  JNI global references: 656
  </code></pre>