Threading from a loop

[Nicholas Poole]

Hi,

My problem is that I want a function to start as a new thread every time
it's called, hence allowing the loop to continue and spawn a thread for
each iteration of the loop. Currently my loop waits for the function to
end before it continues. If anyone can anyone tell me what I'm missing,
or even refer me to some good documentation, I'd be grateful.

My current code is as follows:

cl.add_message_callback do |m|
if m.type != :error
#break off
newreplythread = Thread.new(cl, m) {
#function call is here
}
end
}

(Maybe I'm mistaking the loop for something else, but it's behaviour
apears the same)


Thanks

NickPoole

 

[Roger Pack]

My current code is as follows:

cl.add_message_callback do |m|
if m.type != :error
#break off
newreplythread = Thread.new(cl, m) {
#function call is here
}
end
}

(Maybe I'm mistaking the loop for something else, but it's behaviour
apears the same)


Thanks

NickPoole

Code looks good to me unless its never being called.
http://www.rubycentral.com/pickaxe/tut_threads.html

 

[7stud --]

Hi,

My problem is that I want a function to start as a new thread every time
it's called, hence allowing the loop to continue and spawn a thread for
each iteration of the loop. Currently my loop waits for the function to
end before it continues. If anyone can anyone tell me what I'm missing,
or even refer me to some good documentation, I'd be grateful.

My current code is as follows:

cl.add_message_callback do |m|
if m.type != :error
#break off
newreplythread = Thread.new(cl, m) {
#function call is here
}
end
}

(Maybe I'm mistaking the loop for something else, but it's behaviour
apears the same)

Try this:

def greet
puts 'hello'
end


threads = []

5.times do |i|
threads << Thread.new do
sleep(rand() * 10)
puts "thread#{i}"
greet
puts
end
puts "loop#{i}"
end
puts

threads.each{|thr| thr.join}

--output:--
loop0
loop1
loop2
loop3
loop4 #Note that all loop iterations are completed

thread3
hello

thread0
hello

thread4
hello

thread1
hello

thread2
hello