Ruby threads

Ruby
1

Hi guys! Hope you`ll find some time to assist with any ideas

i have an array of links and a number of steps that needs to be done to
each of those links.

there are always the same amount of links in array…so basically i can
do everything manually

i was wondering how can i create the new thread for processing each of
those links , maybe there`s a way of doing something like this :

array.each do |link|
a = Thread.new {…}
a.join
end

2

Vlad Smith wrote:

array.each do |link|
a = Thread.new {…}
a.join
end

That almost works, except it will block on each thread before starting
the next.

threads = []

array.each do |link|
threads << Thread.new {…}
end

threads.each do |t|
t.join
end

-Justin

3

On Thu, Jul 02, 2009 at 05:44:00AM +0900, Vlad Smith wrote:

array.each do |link|
a = Thread.new {…}
a.join
end

Your code won’t run anything in parallel. Thread#join will wait until
the thread is finished.

Try mapping your array to a list of threads, then iterating over that
list calling join:

array.map { |link|
Thread.new(link) { |l| … }
}.each { |thread| thread.join }

4

thanks everybody, works works just great!