PM08712: GMF deadlock: RuntimeException in resourceSetChanged leaves tran saction forever open

Rational Software Architect RealTime Edition, Version 7.5.5.1
Rational Software Architect Standard Edition, Version 7.5.5.1
Rational Application Developer for WebSphere Software, Version 7.5.5.1

APAR status

• Closed as program error.

Error description

• Environment:
  - Microsoft Windows XP SP1/2
   - IBM Rational Application Developer 7.5.2
  
  Reproducible Y/N: Y
  
  Description of problem:
  When a RuntimeException is thrown from a ResourceSetListener.res
  ourceSetChanged implementation, within a GMF diagram,
  DiagramEditingDomainFactory.DiagramEditingDomain doesn't close t
  he inner transaction it creates (lines 212-219), and that preven
  ts any change in any transaction to commit ever after. Your only
   choice is to close eclipse.
  This has been reported again eclipse with the bugzilla:
  https://bugs.eclipse.org/bugs/show_bug.cgi?id=301520
  
  Steps to reproduce:
  Create a GMF logic example, and apply the attached patch. Create
   a diagram, add a circuit, and move it around a few times. Once
  the RuntimeException is thrown, nothing will change in the diagr
  am, or in any other diagram you create.
  
  Workaround:
  None
  

Local fix

Problem summary

• When a RuntimeException is thrown from a
  ResourceSetListener.resourceSetChanged
  implementation, within a GMF diagram,
  DiagramEditingDomainFactory.DiagramEditingDomain doesn't
  close the inner
  transaction it creates (lines 212-219), and that prevents
  any change in any
  transaction to commit ever after. Your only choice is to
  close eclipse
  

Problem conclusion

• Capture the exception in
  DiagramEditingDomainFactory.DiagramEditingDomain,
  rollback the inner transaction, and throw again the
  exception to keep current
  behaviour. This effectively elliminates deadlock and lets
  users/developers know that exception has occurred via Error
  log
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  RATL APP DEV WI

• Fixed component ID

  5724J1901

Applicable component levels

• R750 PSN

     UP