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Re: eclipse debugging help
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Re: eclipse debugging help

  • Subject: Re: eclipse debugging help
  • From: james o'loughlin <email@hidden>
  • Date: Wed, 22 Oct 2008 14:54:39 -0400

On Oct 22, 2008, at 12:10 PM, Florijan Stamenkovic wrote:

James,

A bit more info might be necessary to resolve this...

Your app hangs? As in it deadlocks? Or as in takes a seemingly unnecessary amount of time to compute something? How did you obtain the stack below, was an exception thrown, or did you manually suspend the worker thread and copy it? What are other threads in your app doing? How reproducible is this? What kind of an object is being formatted?

If it is a deadlock, and your worker thread stops for seemingly no reason at NSTimestampFormater.format(...), it could be that either the method or a block in it is synchronized and waiting for something to release the lock.

F

it appears the app deadlocks. my browser hangs and eclipse's debug window opens with the stack i've attached. it does not appear that something is being computed and needs to run its course.

yes, there is an exception being thrown but i can't find the source of this exception. the only feedback i get is the stack window telling me the last piece of my app it talked to was the PageViewer component. from there i'm at a loss.

all of the other threads are (Running).

it's reproducible every time.

the crux is i'm not sure what object is being formatted. in the passed, i've found the problem by removing removing HTML from my component until i find the section of code throwing the exception. this is tedious and worse than programming cobol on a vax with a printer... i eventually find the exception but i can't continue this debugging process with any sanity. i'd love for eclipse to point me to the problem.

thanks for listening...
./james





On Oct 21, 2008, at 14:25, james o'loughlin wrote:


i'm pulling my hair out sometime trying to find my errors. my app hangs and this stack doesn't do me much good. i see PageViewer is the last component my app talked to and then i can't find nuttin'...

can someone please push or shove me in the right direction to use eclipse to debug my apps? most of the time eclipse will tell me the .java file and line # of the error.

thanks,
./james

stack:
NSTimestampFormatter.format(Object, StringBuffer, FieldPosition) line: 642
NSTimestampFormatter(Format).format(Object) line: 133
WOString.appendToResponse(WOResponse, WOContext) line: 65
WOGenericContainer (WODynamicGroup).appendChildrenToResponse(WOResponse, WOContext) line: 126
WOGenericContainer.appendToResponse(WOResponse, WOContext) line: 44
WOGenericContainer (WODynamicGroup).appendChildrenToResponse(WOResponse, WOContext) line: 126
WOGenericContainer.appendToResponse(WOResponse, WOContext) line: 44
WOConditional(WODynamicGroup).appendChildrenToResponse(WOResponse, WOContext) line: 126
WOConditional.appendToResponse(WOResponse, WOContext) line: 94
WOConditional(WODynamicGroup).appendChildrenToResponse(WOResponse, WOContext) line: 126
WOConditional.appendToResponse(WOResponse, WOContext) line: 94
WODynamicGroup.appendChildrenToResponse(WOResponse, WOContext) line: 126
WODynamicGroup.appendToResponse(WOResponse, WOContext) line: 136
PageViewer(WOComponent).appendToResponse(WOResponse, WOContext) line: 1122
Session(WOSession).appendToResponse(WOResponse, WOContext) line: 1385
WOApplication.appendToResponse(WOResponse, WOContext) line: 1794
WOComponentRequestHandler._dispatchWithPreparedPage(WOComponent, WOSession, WOContext, NSDictionary) line: 242
WOComponentRequestHandler._dispatchWithPreparedSession(WOSession, WOContext, NSDictionary) line: 298
WOComponentRequestHandler ._dispatchWithPreparedApplication(WOApplication, WOContext, NSDictionary) line: 332
WOComponentRequestHandler._handleRequest(WORequest) line: 369
WOComponentRequestHandler.handleRequest(WORequest) line: 442
WOApplication.dispatchRequest(WORequest) line: 1687
WOWorkerThread.runOnce() line: 144
WOWorkerThread.run() line: 226
Thread.run() line: 613 



-----

owns: java.lang.Object (id=81)
com .webobjects .foundation.NSTimestampFormatter.format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition) line: 642
com .webobjects .foundation .NSTimestampFormatter(java.text.Format).format(java.lang.Object) line: 133
com .webobjects .appserver ._private .WOString.appendToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 65
com .webobjects .appserver ._private .WOGenericContainer (com .webobjects .appserver ._private .WODynamicGroup ).appendChildrenToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 126
com .webobjects .appserver ._private .WOGenericContainer .appendToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 44
com .webobjects .appserver ._private .WOGenericContainer (com .webobjects .appserver ._private .WODynamicGroup ).appendChildrenToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 126
com .webobjects .appserver ._private .WOGenericContainer .appendToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 44
com .webobjects .appserver ._private .WOConditional (com .webobjects .appserver ._private .WODynamicGroup ).appendChildrenToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 126
com .webobjects .appserver ._private .WOConditional .appendToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 94
com .webobjects .appserver ._private .WOConditional (com .webobjects .appserver ._private .WODynamicGroup ).appendChildrenToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 126
com .webobjects .appserver ._private .WOConditional .appendToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 94
com .webobjects .appserver ._private .WODynamicGroup .appendChildrenToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 126
com .webobjects .appserver ._private .WODynamicGroup .appendToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 136
PageViewer (com .webobjects .appserver .WOComponent).appendToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 1122
Session (com .webobjects .appserver .WOSession).appendToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 1385
com .webobjects .appserver .WOApplication .appendToResponse(com.webobjects.appserver.WOResponse, com.webobjects.appserver.WOContext) line: 1794
com .webobjects .appserver ._private .WOComponentRequestHandler ._dispatchWithPreparedPage(com.webobjects.appserver.WOComponent, com.webobjects.appserver.WOSession, com.webobjects.appserver.WOContext, com.webobjects.foundation.NSDictionary) line: 242
com .webobjects .appserver ._private .WOComponentRequestHandler ._dispatchWithPreparedSession(com.webobjects.appserver.WOSession, com.webobjects.appserver.WOContext, com.webobjects.foundation.NSDictionary) line: 298
com .webobjects .appserver ._private .WOComponentRequestHandler ._dispatchWithPreparedApplication (com.webobjects.appserver.WOApplication, com.webobjects.appserver.WOContext, com.webobjects.foundation.NSDictionary) line: 332
com .webobjects .appserver ._private .WOComponentRequestHandler ._handleRequest(com.webobjects.appserver.WORequest) line: 369
com .webobjects .appserver ._private .WOComponentRequestHandler .handleRequest(com.webobjects.appserver.WORequest) line: 442
com .webobjects .appserver .WOApplication.dispatchRequest(com.webobjects.appserver.WORequest) line: 1687
com.webobjects.appserver._private.WOWorkerThread.runOnce() line: 144
com.webobjects.appserver._private.WOWorkerThread.run() line: 226
java.lang.Thread.run() line: 613 

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  • Follow-Ups:

      

    • Re: eclipse debugging help

      • From: Florijan Stamenkovic <email@hidden>
      • 





References: 


 >eclipse debugging help (From: james o'loughlin <email@hidden>)


 >Re: eclipse debugging help (From: Florijan Stamenkovic <email@hidden>)






    

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