diff options
Diffstat (limited to 'test/thread/lbtest.rb')
-rwxr-xr-x | test/thread/lbtest.rb | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/test/thread/lbtest.rb b/test/thread/lbtest.rb new file mode 100755 index 0000000000..10bb90185f --- /dev/null +++ b/test/thread/lbtest.rb @@ -0,0 +1,51 @@ +#! /usr/bin/ruby +require 'thread' + +class LocalBarrier + def initialize(n) + @wait = Queue.new + @done = Queue.new + @keeper = begin_keeper(n) + end + + def sync + @done.push(true) + @wait.pop + end + + def join + @keeper.join + end + + private + def begin_keeper(n) + Thread.start do + n.times do + @done.pop + end + n.times do + @wait.push(true) + end + end + end +end + +n = 10 + +lb = LocalBarrier.new(n) + +(n - 1).times do |i| + Thread.start do + sleep((rand(n) + 1) / 10.0) + puts "#{i}: done" + lb.sync + puts "#{i}: cont" + end +end + +lb.sync +puts "#{n-1}: done" + +# lb.join # leaving waiting threads. + +puts "exit." |