NetBeans Java Debugger Connects once, but not again
 

On 2 different computers, when I first installed NetBeans, I was able to run and debug one of the sample programs.

But after that first success, I haven't been able to do it again.

This is the output I get, starting with what looks like some successful messages from constructors and whatnot.
(i have a breakpoint set in the constructor that seems to be printing the "Iterative Robot ConstructorStart" message):
[cRIO] FPGA Hardware GUID: 0xad9a5591cc64e4df756d77d1b57a549e
[cRIO] FPGA Software GUID: 0xad9a5591cc64e4df756d77d1b57a549e
[cRIO] IterativeRobot Constructor Start
[cRIO] IterativeRobot Constructor Finish
Waiting for connection from debugger on serversocket://:2900
Synchronizing debug state with VM...............
Established connection to Debugger (handshake took 8376ms)
[cRIO] !!! no thread found waiting on event=== DEAD-LOCK STATUS: ===
[cRIO] --- isolate 2 "edu.wpi.first.wpilibj.samples.CircleTrackerDe mo" (ALIVE) status ---
[cRIO] thread Thread-10 priority: 5 state: ALIVE queue: RUNNABLE
[cRIO] at com.sun.squawk.VMThread.monitorWait(VMThread.java: 2298)
[cRIO] at java.lang.Object.wait(Object.java:162)
[cRIO] at java.util.TimerThread.mainLoop(Timer.java:439)
[cRIO] at java.util.TimerThread.run(Timer.java:391)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread Thread-9 priority: 5 state: ALIVE queue: RUNNABLE
[cRIO] at com.sun.squawk.VMThread.monitorWait(VMThread.java: 2298)
[cRIO] at java.lang.Object.wait(Object.java:162)
[cRIO] at java.util.TimerThread.mainLoop(Timer.java:439)
[cRIO] at java.util.TimerThread.run(Timer.java:391)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread FRCDriverStation priority: 5 state: ALIVE queue: RUNNABLE
[cRIO] at com.sun.squawk.VMThread.waitForEvent(VMThread.java :1863)
[cRIO] at com.sun.squawk.NativeUnsafe.waitForBlockingFunctio n(NativeUnsafe.java:641)
[cRIO] at com.sun.cldc.jna.BlockingFunction.call2(BlockingFu nction.java:113)
[cRIO] at com.sun.cldc.jna.Function.call2(Function.java:271)
[cRIO] in static method #1 of edu.wpi.first.wpilibj.communication.FRCControl(bci =15)
[cRIO] in virtual method #12 of edu.wpi.first.wpilibj.DriverStation(bci=10)
[cRIO] in virtual method #11 of edu.wpi.first.wpilibj.DriverStation(bci=9)
[cRIO] in static method #2 of edu.wpi.first.wpilibj.DriverStation(bci=5)
[cRIO] at edu.wpi.first.wpilibj.DriverStation$DriverStationT ask.run(bci=6)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread edu.wpi.first.wpilibj.samples.CircleTrackerDemo - main priority: 5 state: ALIVE queue: RUNNABLE
[cRIO] at com.sun.squawk.VMThread.monitorWait(VMThread.java: 2298)
[cRIO] at java.lang.Object.wait(Object.java:162)
[cRIO] at java.lang.Object.wait(Object.java:257)
[cRIO] at com.sun.squawk.debugger.EventNotifier.produceEvent (EventNotifier.java:122)
[cRIO] at com.sun.squawk.debugger.EventManager.produceEvent( EventManager.java:184)
[cRIO] at com.sun.squawk.debugger.sda.SDA.notifyEvent(SDA.ja va:1044)
[cRIO] at com.sun.squawk.imp.MIDletMainWrapper.main(MIDletMa inWrapper.java:104)
[cRIO] at com.sun.squawk.Klass.main(Klass.java:2997)
[cRIO] at com.sun.squawk.Isolate.run(Isolate.java:1554)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] --- isolate 1 "com.sun.squawk.debugger.sda.SDA" (ALIVE) status ---
[cRIO] thread EventManager priority: 5 state: ALIVE queue: CONDVAR waiting on condvar for object com.sun.squawk.debugger.EventNotifier@10
[cRIO] at com.sun.squawk.VMThread.monitorWait(VMThread.java: 2298)
[cRIO] at java.lang.Object.wait(Object.java:162)
[cRIO] at java.lang.Object.wait(Object.java:257)
[cRIO] at com.sun.squawk.debugger.EventNotifier.consumeEvent (EventNotifier.java:156)
[cRIO] at com.sun.squawk.debugger.EventManager.run(EventMana ger.java:65)
[cRIO] at com.sun.squawk.debugger.sda.SDA$SDAEventManager.ru n(SDA.java:608)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread SDPListener priority: 5 state: ALIVE queue: EVENT
[cRIO] at com.sun.squawk.VMThread.waitForOSEvent(VMThread.ja va:1910)
[cRIO] at com.sun.squawk.platform.posix.SystemEventsImpl.wai tForReadEvent(SystemEventsImpl.java:306)
[cRIO] at com.sun.squawk.platform.posix.GCFSocketsImpl.readB uf(GCFSocketsImpl.java:303)
[cRIO] at com.sun.squawk.platform.posix.GCFSocketsImpl.readB yte(GCFSocketsImpl.java:337)
[cRIO] at com.sun.squawk.io.j2me.socket.PrivateInputStream.r ead(Protocol.java:356)
[cRIO] at java.io.DataInputStream.read(DataInputStream.java: 91)
[cRIO] at java.io.DataInputStream.readInt(DataInputStream.ja va:332)
[cRIO] at com.sun.squawk.debugger.JDWPConnection.readPacket( JDWPConnection.java:192)
[cRIO] at com.sun.squawk.debugger.JDWPListener.run(JDWPListe ner.java:122)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread SDA priority: 5 state: ALIVE queue: JOIN
[cRIO] at com.sun.squawk.VMThread.join(VMThread.java:484)
[cRIO] at java.lang.Thread.join(Thread.java:323)
[cRIO] at com.sun.squawk.debugger.sda.SDA.go(SDA.java:1381)
[cRIO] at com.sun.squawk.debugger.sda.SDA.main(SDA.java:1441 )
[cRIO] at com.sun.squawk.Klass.main(Klass.java:2997)
[cRIO] at com.sun.squawk.Isolate.run(Isolate.java:1554)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] --- isolate 0 "com.sun.squawk.JavaApplicationManager" (ALIVE) status ---
[cRIO] thread IOHandler priority: 5 state: ALIVE queue: CONDVAR waiting on condvar for object com.sun.squawk.platform.posix.SystemEventsImpl@11
[cRIO] at com.sun.squawk.VM.reifyStack(VM.java:1029)
[cRIO] at com.sun.squawk.VMThread.printStackTrace(VMThread.j ava:1752)
[cRIO] at com.sun.squawk.Isolate.printAllThreadStates(Isolat e.java:2696)
[cRIO] at com.sun.squawk.Isolate.printAllIsolateStates(Isola te.java:2712)
[cRIO] at com.sun.squawk.VMThread.rescheduleNext(VMThread.ja va:1606)
[cRIO] at com.sun.squawk.VMThread.reschedule(VMThread.java:1 781)
[cRIO] at com.sun.squawk.VMThread.monitorWait(VMThread.java: 2298)
[cRIO] at java.lang.Object.wait(Object.java:162)
[cRIO] at com.sun.squawk.platform.posix.SystemEventsImpl.wai tForEvents(SystemEventsImpl.java:223)
[cRIO] at com.sun.squawk.platform.SystemEvents.run(SystemEve nts.java:71)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread primitve-thread priority: 5 state: ALIVE queue: ISOLATEJOIN
[cRIO] at com.sun.squawk.VMThread.isolateJoin(VMThread.java: 504)
[cRIO] at com.sun.squawk.Isolate.join(Isolate.java:1575)
[cRIO] at com.sun.squawk.JavaApplicationManager.main(JavaApp licationManager.java:150)
[cRIO] at com.sun.squawk.Klass.main(Klass.java:2997)
[cRIO] at com.sun.squawk.Isolate.run(Isolate.java:1554)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)


none of the debug buttons, such as step or pause or go are enabled.

Suggestions anyone?

Thanks much.

Re: NetBeans Java Debugger Connects once, but not again
 

I'm not seeing that in tests here. I'm using NetBeans 6.7 on Mac. Let me know what version you are using.

Also, the error message shown could be related to a networking code bug, not necessarily a debugging bug. If possible, could you send your robot program? You can send to derek<dot>white@sun.com (replacing <dot> with . )

Thanks!

Re: NetBeans Java Debugger Connects once, but not again
 

OK, I see the error also when I run from Windows (for some reason). No work-around is available, but a fix is in progress...

Re: NetBeans Java Debugger Connects once, but not again
 

Also am having a similar issue... the debug code is below... It works with a hardwired connection(ethernet) but when wireless we are not able to de-bug.


Established connection to Debugger (handshake took 1687ms)
[cRIO] !!! no thread found waiting on event=== DEAD-LOCK STATUS: ===
[cRIO] --- isolate 2 "edu.wpi.first.wpilibj.templates.BreakawayRobo t" (ALIVE) status ---
[cRIO] thread FRCDriverStation priority: 5 state: ALIVE queue: RUNNABLE
[cRIO] at com.sun.squawk.VMThread.waitForEvent(VMThread.java :1863)
[cRIO] at com.sun.squawk.NativeUnsafe.waitForBlockingFunctio n(NativeUnsafe.java:641)
[cRIO] at com.sun.cldc.jna.BlockingFunction.call4(BlockingFu nction.java:137)
[cRIO] at com.sun.cldc.jna.Function.call4(Function.java:321)
[cRIO] in static method #2 of edu.wpi.first.wpilibj.communication.FRCControl(bci =27)
[cRIO] in virtual method #10 of edu.wpi.first.wpilibj.DriverStationEnhancedIO(bci= 200)
[cRIO] in virtual method #11 of edu.wpi.first.wpilibj.DriverStation(bci=13)
[cRIO] in static method #2 of edu.wpi.first.wpilibj.DriverStation(bci=5)
[cRIO] at edu.wpi.first.wpilibj.DriverStation$DriverStationT ask.run(bci=6)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread edu.wpi.first.wpilibj.templates.BreakawayRobot - main priority: 5 state: ALIVE queue: RUNNABLE
[cRIO] at com.sun.squawk.VMThread.monitorWait(VMThread.java: 2298)
[cRIO] at java.lang.Object.wait(Object.java:162)
[cRIO] at java.lang.Object.wait(Object.java:257)
[cRIO] at com.sun.squawk.debugger.EventNotifier.produceEvent (EventNotifier.java:122)
[cRIO] at com.sun.squawk.debugger.EventManager.produceEvent( EventManager.java:184)
[cRIO] at com.sun.squawk.debugger.sda.SDA.notifyEvent(SDA.ja va:1044)
[cRIO] at com.sun.squawk.imp.MIDletMainWrapper.main(MIDletMa inWrapper.java:104)
[cRIO] at com.sun.squawk.Klass.main(Klass.java:2997)
[cRIO] at com.sun.squawk.Isolate.run(Isolate.java:1554)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] --- isolate 1 "com.sun.squawk.debugger.sda.SDA" (ALIVE) status ---
[cRIO] thread EventManager priority: 5 state: ALIVE queue: CONDVAR waiting on condvar for object com.sun.squawk.debugger.EventNotifier@e
[cRIO] at com.sun.squawk.VMThread.monitorWait(VMThread.java: 2298)
[cRIO] at java.lang.Object.wait(Object.java:162)
[cRIO] at java.lang.Object.wait(Object.java:257)
[cRIO] at com.sun.squawk.debugger.EventNotifier.consumeEvent (EventNotifier.java:156)
[cRIO] at com.sun.squawk.debugger.EventManager.run(EventMana ger.java:65)
[cRIO] at com.sun.squawk.debugger.sda.SDA$SDAEventManager.ru n(SDA.java:608)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread SDPListener priority: 5 state: ALIVE queue: EVENT
[cRIO] at com.sun.squawk.VMThread.waitForOSEvent(VMThread.ja va:1910)
[cRIO] at com.sun.squawk.platform.posix.SystemEventsImpl.wai tForReadEvent(SystemEventsImpl.java:306)
[cRIO] at com.sun.squawk.platform.posix.GCFSocketsImpl.readB uf(GCFSocketsImpl.java:303)
[cRIO] at com.sun.squawk.platform.posix.GCFSocketsImpl.readB yte(GCFSocketsImpl.java:337)
[cRIO] at com.sun.squawk.io.j2me.socket.PrivateInputStream.r ead(Protocol.java:356)
[cRIO] at java.io.DataInputStream.read(DataInputStream.java: 91)
[cRIO] at java.io.DataInputStream.readInt(DataInputStream.ja va:332)
[cRIO] at com.sun.squawk.debugger.JDWPConnection.readPacket( JDWPConnection.java:192)
[cRIO] at com.sun.squawk.debugger.JDWPListener.run(JDWPListe ner.java:122)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread SDA priority: 5 state: ALIVE queue: JOIN
[cRIO] at com.sun.squawk.VMThread.join(VMThread.java:484)
[cRIO] at java.lang.Thread.join(Thread.java:323)
[cRIO] at com.sun.squawk.debugger.sda.SDA.go(SDA.java:1381)
[cRIO] at com.sun.squawk.debugger.sda.SDA.main(SDA.java:1441 )
[cRIO] at com.sun.squawk.Klass.main(Klass.java:2997)
[cRIO] at com.sun.squawk.Isolate.run(Isolate.java:1554)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] --- isolate 0 "com.sun.squawk.JavaApplicationManager" (ALIVE) status ---
[cRIO] thread IOHandler priority: 5 state: ALIVE queue: CONDVAR waiting on condvar for object com.sun.squawk.platform.posix.SystemEventsImpl@f
[cRIO] at com.sun.squawk.VM.reifyStack(VM.java:1029)
[cRIO] at com.sun.squawk.VMThread.printStackTrace(VMThread.j ava:1752)
[cRIO] at com.sun.squawk.Isolate.printAllThreadStates(Isolat e.java:2696)
[cRIO] at com.sun.squawk.Isolate.printAllIsolateStates(Isola te.java:2712)
[cRIO] at com.sun.squawk.VMThread.rescheduleNext(VMThread.ja va:1606)
[cRIO] at com.sun.squawk.VMThread.reschedule(VMThread.java:1 781)
[cRIO] at com.sun.squawk.VMThread.monitorWait(VMThread.java: 2298)
[cRIO] at java.lang.Object.wait(Object.java:162)
[cRIO] at com.sun.squawk.platform.posix.SystemEventsImpl.wai tForEvents(SystemEventsImpl.java:223)
[cRIO] at com.sun.squawk.platform.SystemEvents.run(SystemEve nts.java:71)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] thread primitve-thread priority: 5 state: ALIVE queue: ISOLATEJOIN
[cRIO] at com.sun.squawk.VMThread.isolateJoin(VMThread.java: 504)
[cRIO] at com.sun.squawk.Isolate.join(Isolate.java:1575)
[cRIO] at com.sun.squawk.JavaApplicationManager.main(JavaApp licationManager.java:150)
[cRIO] at com.sun.squawk.Klass.main(Klass.java:2997)
[cRIO] at com.sun.squawk.Isolate.run(Isolate.java:1554)
[cRIO] at java.lang.Thread.run(Thread.java:231)
[cRIO] at com.sun.squawk.VMThread.callRun(VMThread.java:1499 )
[cRIO] at com.sun.squawk.VM.callRun(VM.java:305)
[cRIO] task 0x2179ef8 (FTP Server Connection Thread) deleted: errno=22 (0x16) status=0 (0)
[cRIO] task 0x2179ef8 (FTP Server Connection Thread) deleted: errno=22 (0x16) status=0 (0)

Thanks,