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Re: jdk demos

daemon@ATHENA.MIT.EDU (Arthur van Hoff)
Mon Oct 2 22:36:56 1995

Date: Mon, 2 Oct 1995 10:04:38 -0700
From: Arthur.Vanhoff@Eng.Sun.COM (Arthur van Hoff)
To: Calvin.Austin@UK.Sun.COM
Cc: java-interest@java.Eng.Sun.COM


Hi,

> I have looked through the mail achives and known bugs but haven't been able 
> to find the problem I have with some of the JDK demos applets. Some
> applets work fine but others like Animator churn out some debugging info 
> and then dump core. Has anyone else experienced this or is there
> something wrong with my setup

Is your DISPLAY environment variable set? There is a bug in the JDK
that causes a coredump if it isn't.

Have fun,

	Arthur van Hoff
> 
> Thanks for any replies, here is the output 
> 
> corn% ../../bin/appletviewer example1.html
> SIGSEGV   11*  segmentation violation
>     si_signo [11]: SIGSEGV   11*  segmentation violation
>     si_errno [0]: Error 0
>     si_code [1]: SEGV_ACCERR [addr: 0xc]
> 
> 	stackbase=EFFFEB2C, stackpointer=EFFFB570
> 
> Full thread dump:
>     "Finalizer thread" (TID:0xee300620, sys_thread_t:0xef490de8) prio=1
>     "Async Garbage Collector" (TID:0xee3005d0, sys_thread_t:0xef4c0de8) prio=1
>     "Idle thread" (TID:0xee300558, sys_thread_t:0xef4f0de8) prio=0
>     "clock handler" (TID:0xee300098, sys_thread_t:0xef5b0de8) prio=11
>     "main" (TID:0xee300048, sys_thread_t:0x60118) prio=5 *current thread*
> 	sun.awt.motif.MToolkit.<init>(MToolkit.java:33)
> 	java.awt.Toolkit.getDefaultToolkit(Toolkit.java:178)
> 	java.awt.Window.getToolkit(Window.java:126)
> 	java.awt.Frame.addNotify(Frame.java:63)
> 	java.awt.Window.pack(Window.java:67)
> 	sun.applet.AppletViewer.<init>(AppletViewer.java:109)
> 	sun.applet.AppletViewer.parse(AppletViewer.java:507)
> 	sun.applet.AppletViewer.main(AppletViewer.java:590)
> Monitor Cache Dump:
>     unknown key (key=0xef4c0de8):     unowned
> 	Waiting to be notified:
> 	    "Async Garbage Collector"
>     unknown key (key=0x9fb38):     monitor owner: "main"
>     sun.awt.motif.MToolkit@EE302710/EE33D2A0 (key=0xee302710):     monitor 
owner: "main"
>     java.lang.Class@EE302610/91A60 (key=0xee302610):     monitor owner: "main"
>     sun.applet.AppletViewer@EE302290/EE33C170 (key=0xee302290):     monitor 
owner: "main"
> Registered Monitor Dump:
>     Finalize me queue lock:     unowned
> 	Waiting to be notified:
> 	    "Finalizer thread"
>     Thread queue lock:     unowned
>     Class lock:     unowned
>     Java stack lock:     unowned
>     Code rewrite lock:     unowned
>     Heap lock:     unowned
>     Has finalization queue lock:     unowned
>     Monitor IO lock:     unowned
>     Child death monitor:     unowned
>     Event monitor:     unowned
>     I/O monitor:     unowned
>     Alarm monitor:     unowned
> 	Waiting to be notified:
> 	    "clock handler"
>     Sbrk lock:     unowned
>     Monitor cache lock:     unowned
>     Monitor registry:     monitor owner: "main"
> Thread Alarm Q:
>     sys_thread_t 0xef4c0de8   [Timeout in 900 ms]
> Segmentation Fault
> corn% ls
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