From: ts <decoux@...>
Date: 2003-07-04T20:04:24+09:00
Subject: Re: Ruby, Threads and Processes

>>>>> "G" == George Moschovitis <gm@navel.gr> writes:

G> %x{ convert -scale '100x100>' -antialias #{src} #{dst} }

 When you use %x{}, ruby use a pipe you can see it

svg% cat b.rb
#!/usr/bin/ruby
t = Thread.new do
   p "before"
   12.times {|i| Thread.pass; p "after #{i}"; sleep 1 }
   p "after"
end

t1 = Thread.new do
   p "before sleep"
   p %x{a.sh 2}
   p "after sleep"
end

t.join
t1.join
svg% 

svg% cat a.sh
#!/bin/sh
sleep $1
echo "a.sh"
svg% 

svg% b.rb
"before"
"before sleep"
"after 0"
"after 1"
"after 2"
"a.sh\n"
"after sleep"
"after 3"
"after 4"
"after 5"
"after 6"
"after 7"
"after 8"
"after 9"
"after 10"
"after 11"
"after"
svg% 


Guy Decoux