From: Emil Sandin <esandin@...>
Date: 2008-05-05T03:48:04+09:00
Subject: Don't wait for Exception in threads

I have two threads running in parallell, like this:

####################

t1=Thread.new{
  50.times{
    p "thread one"
    sleep 0.1
  }
}

t2=Thread.new{
  p "thread two"
  raise "error in thread two"
}

t1.join
t2.join

#################
The output is:
"thread one"
"thread two"
"thread one"
... 48 times more "thread one"
"thread one"
testscript.rb:15: error in thread two (RuntimeError)
  from testscript.rb:19:in `join'
  from testscript.rb:19

The program waits for the first thread to complete before telling me
that the second one raised an exception.
I don't want to wait until the first thread finishes to see the
exception, I want to see it right away.
How can I do that?

Regards
Emil
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