From: Amos King <amos.l.king@...>
Date: 2007-04-24T02:47:11+09:00
Subject: Re: threads demo from pickaxe book - newbie question

I ran your script as a file and not from irb.  works just fine, but
really doesn't show the threads working that well.  You should just
try something like

t1 = Thread.new { 1_000.times { puts 'thread 1' } }
t2 = Thread.new { 1_000.times { puts 'thread 2' } }
t3 = Thread.new { 1_000.times { puts 'thread 3' } }
t4= Thread.new { 1_000.times { puts 'thread 4' } }

On 4/23/07, Amos King <amos.l.king@gmail.com> wrote:
> The super call is calling the initialize function in The base class,
> in this case Monitor
>
> On 4/23/07, Christopher Rose <chrisrose.chrisrose@gmail.com> wrote:
> > All,
> >
> > Please forgive a newbie question - I have tried searching for errata on
> > the Pickaxe book (2nd ed) but not found an answer.  I am running Ruby
> > 1.8.2 on WinXP.  I type in, or source from file, the example - from pg.
> > 143, copied below - into the interactive ruby prompt in the fxri tool.
> > I get to the line
> >
> > t1.join ; t2.join
> >
> > and the tool hangs.  Is this expected?  Is there some better way(s) to
> > debug thread-related issues?  Thanks for any advice -
> >
> > Chris
> >
> > P.S. Could someone please explain the purpose of the 'super' command in
> > this script?  Thx -
> >
> > -----------------------<begin example pg. 143>----------------------
> >
> >
> >
> > # with my current version of fxri, this hangs
> >  require 'monitor'
> >  class Counter < Monitor
> >   attr_reader :count
> >   def initialize
> >     @count = 0
> >     super
> >   end
> >   def tick
> >     synchronize do
> >       @count += 1
> >     end
> >   end
> >  end
> >
> >  c = Counter.new
> >  t1 = Thread.new { 100_000.times { c.tick } }
> >  t2 = Thread.new { 100_000.times { c.tick } }
> >
> >  t1.join ; t2.join
> >
> >  c.count
> >
> > --
> > Posted via http://www.ruby-forum.com/.
> >
> >
>
>
> --
> Amos King
> Ramped Media
> USPS
> Programmer/Analyst
> St. Louis, MO
> Looking for something to do? Visit ImThere.com
>
>


-- 
Amos King
Ramped Media
USPS
Programmer/Analyst
St. Louis, MO
Looking for something to do? Visit ImThere.com