From: Venkat Akkineni <venkatram.akkineni@...>
Date: 2010-12-18T23:10:10+09:00
Subject: Re: background threads

Mike


        Thanks for your reply. The flag is wrong indeed. I didn't notice
this because the 'else' part of setSignal never gets executed with the
current setup. You will notice that the program runs exactly the same
way even when all commands inside setSignal except call to
display function are commented.

def setSignal(signal)
#    if signal == true
      display
#    else
#      self.aFlag=true
#    end
  end

When I change the display function to the following

 def display
    self.run
    sleep 20
  end

program prints 'I am here' after 20 seconds.

The reason I did not have an argument for sleep is I wan't the thread
run indefinitely until I call it off some how. This is the desired
effect.

Two approaches I have tried are

1.) loop through indefinitely around necessary code block.
2.) create a thread around the above loop and call Thread.join.

Both the above approaches stop execution where ever these blocks are
called from. Hence I am unable to push the execution of the thread to
the background.

Your thoughts and help ...

Thanks
Venkat

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