Re: Output from sudo kill -QUIT pid

Thanks Chuck. I've made the change. But I'm assuming that I have to restart
wotaskd to affect the change. Is it possible to do a kill -HUP or just
terminate and restart wotaskd without affecting the running applications if
I do it quickly?

Thanks,

___________________________

Brendan Duddridge

ClickSpace Interactive Inc.
Suite L100
239 - 10th Ave SE
Calgary, AB  T2G 0V9
Canada
(403) 277-5591
http://www.clickspace.com/


> From: Chuck Hill <[email protected]>
> Date: Fri, 19 Nov 2004 11:22:57 -0800
> To: Brendan Duddridge <[email protected]>
> Cc: WebObjects Admin <[email protected]>
> Subject: Re: Output from sudo kill -QUIT pid
> 
> Hi Brendan,
> 
> Apple, in its never ending quest to "think different" keeps these in a
> very special place - /dev/null.  You need to use the DevNullViewer
> application to access these.  :-P
> 
>   OK, enough with the jokes.  Here is how to fix this:
> -----------------
> 
> From: Wojtek
> 
> Theoretically you can do kill -QUIT <jvmpid> to see the list of JVM
> threads, and (since 1.4) deadlocks:
> http://developer.java.sun.com/developer/technicalArticles/Programming/
> Stacktrace/
> 
> ===  Go to appropriate dir
> # cd
> /opt/Apple52/Library/WebObjects/JavaApplications/wotaskd.woa/Contents/
> Resources/
> 
> === Original file (Apple)
> # cat SpawnOfWotaskd.sh.bak
> #!/bin/sh
> 
> $@ 1>/dev/null 2>&1 &
> 
> === Modified by me  (not the best choice of files)
> # cat SpawnOfWotaskd.sh
> #!/bin/sh
> 
> $@ 1>>/var/log/webobjects.log 2>>/var/log/webobjects.err &
> 
> === Now signal
> # kill -QUIT 19466
> 
> === Et voilla, trace is back
> # tail /var/log/webobjects.log
>          at Application.main(Application.java:32)
>          at java.lang.reflect.Method.invoke(Native Method)
>          at  
> com.webobjects._bootstrap.WOBootstrap.main(WOBootstrap.java:71)
> 
> "VM Thread" prio=1 tid=0x808ae88 nid=0x4c47 runnable
> 
> "VM Periodic Task Thread" prio=1 tid=0x80958f8 nid=0x4c4a waiting on
> monitor
> "Suspend Checker Thread" prio=1 tid=0x8096290 nid=0x4c4b runnable
> -----------------------
> 
> Or, of course, just turn to page 92, verse 1 in Practical WebObjects.
> ;-)
> 
> Chuck
> 
> 
> On Nov 19, 2004, at 10:29 AM, Brendan Duddridge wrote:
> 
>> Hi,
>> 
>> Does anyone know where the output of doing 'sudo kill -QUIT pid' goes?
>> I
>> have an application that is not responding anymore and I'd like to see
>> the
>> stack trace of where it's waiting. The app was started up with
>> Monitor. I
>> know that if I start it from the command line and do a control-\, then
>> I
>> will see the stack trace. I want an equivalent way of getting that
>> information from a Monitor started application.
>> 
>> WO 5.2.3, OS X Server 10.3.5.
>> 
>> Thanks,
>> 
>> ___________________________
>> 
>> Brendan Duddridge
>> 
>> ClickSpace Interactive Inc.
>> Suite L100
>> 239 - 10th Ave SE
>> Calgary, AB  T2G 0V9
>> Canada
>> (403) 277-5591
>> http://www.clickspace.com/
>> 
>> 
>> _______________________________________________
>> WebObjects-admin mailing list
>> [email protected]
>> http://www.omnigroup.com/mailman/listinfo/webobjects-admin
>> 
> -- 
> Practical WebObjects - a book for intermediate WebObjects developers
> who want to increase their overall knowledge of WebObjects, or those
> who are trying to solve specific application development problems.
> http://www.global-village.net/products/practical_webobjects
> 
> 
>