From: Shashank Date <ADATE@...>
Date: 2002-08-20T11:49:28+09:00
Subject: Re: thread control

Sorry for the mistake,

the second last line in the script should be changed from:
end until (i == threads.length) && (not b)
to:
end until (i == threads.length) || (not b)


"Shashank Date" <ADATE@kc.rr.com> wrote in message
news:%zh89.14824$Hf.497645@twister.kc.rr.com...
> I am trying to write a ruby script (Ruby 1.7.2 mswin32) which does the
> following:
> 1. Spawn a few threads (say 3, for the time being) each of which invokes
an
> external program using the backquotes.
> 2. Let the main thread continue till either all the threads are done
> executing OR some external event occurs (like deletion of a file by
another
> program).
>
> I cannot seem to make it work (may be because thread implementation in
Ruby
> is not "native" ?).
> Please help. TIA,
> -- Shanko
>
> # Here is my broken script:
> # ------------------------------------------------------
> cmds = [
>         "ping 10.0.0.0 -n 30 -w 1000 > NUL",
>         "ping 10.0.0.0 -n 60 -w 1000 > NUL",
>         "ping 10.0.0.0 -n 90 -w 1000 > NUL"
>        ]
>
> out = []
> threads = []
>
> for c in cmds
>     threads << Thread.new(c) { |myCmd|
>         puts "#{myCmd}"
>         out << `#{myCmd}`
>     }
> end
>
> puts threads.length.to_s + ' threads running'
>
> begin
>     i = 0
>     threads.each { |t| i += 1 if t.stop? }
>     puts `echo %TIME%`
>     b = File.exists?("C:\\junk\\tmp_0.txt")
>     puts i.to_s + ':' + File.mtime("C:\\junk\\tmp_0.txt").to_s if  $DEBUG
> and b
>     $stdout.flush
> end until (i == threads.length) && (not b)
> puts out if $DEBUG
> # ------------------------------------------------------
>
>
>