Don't Panic!, or Vogons -> Panic!

• How to stop, look, listen.

  Panic stops: An example
  
  

| task | 
task := [10 timesRepeat: 
    [Delay forSeconds: 1) wait. 
    Transcript show: 'A']] newProcess. 
task priority: AHeristicValue 
task resume. 
(Delay forSeconds: 3) wait. 
task interruptWith: [NotifierView openContext: thisContext 
    label: 'Stop look listen' 
    proceedable: true].

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Notes:

Say the application is churning along. It's broken but you don't know why... and it's holding say 400 transactions. What to do? Let's just look around first before we panic...

Code like above allowed us to halt everything and do a post-mortem. In practice weíve never had to use it, but you never know...