gistfile1.rb

require 'thread'
require 'open-uri'

LOCK = Mutex.new
$progress = 0

def thread_start
	while true
		open("http://www.microsoft.com/en/us/default.aspx") do |f|
			f.read
		end
		inc_progress
	end
end

def inc_progress
	LOCK.synchronize do
		1000.times do
			File.open("/dev/null", "w") do |f|
				f.write("hi")
			end
		end
	end
	LOCK.synchronize do
		$progress += 1
		puts "#{Thread.current.object_id.to_s(16)}: Progress = #{$progress}"
	end
end

def start
	threads = []
	50.times do
		thread = Thread.new do
			thread_start
		end
		thread.abort_on_exception = true
		threads << thread
	end
	threads.each do |thread|
		thread.join
	end
end

start