From: Mike Houghton <mike_k_houghton@...>
Date: 2006-11-16T23:23:29+09:00
Subject: Threading Question

Hello,

I'm new (very new!) to Ruby but not to programming. I have a 
Thread/class inheritance question.I'm trying to make a simple timer 
class that extends Thread and repeats a block <count> times and each 
repetition separated by <period> seconds. Here's the code

--------------
class Timer < Thread

  def initialize( period, count, &action )

    puts "Begin initialize"
    super
    @period = period
    @count  = count
    @action = action
    puts "End initialize"

  end # initialize


  def start

    puts "Begin start"

    1.upto(@count) do
      sleep(@period)
      @action.call

    end

    puts "End start"


  end # start


end #class Timer

 threads = []

 threads <<  Timer.new(0.77,3){puts "hi"}

 threads.each{ |thr| thr.start}

-------

The output is

Begin initialize
hi
End initialize
Begin start
hi
hi
hi
End start

-------

In my ignorance I expected the supplied block not to be executed in 
initialize
and to be executed only in the start method. Please would someone 
explain where
I'm going wrong and how to correct it.

Many Thanks

Mike




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