Online Ruby Compiler

#!/usr/bin/ruby require 'thread' mutex = Mutex.new cv = ConditionVariable.new a = Thread.new { mutex.synchronize { puts "A: I have critical section, but will wait for cv" cv.wait(mutex) puts "A: I have critical section again! I rule!" } } puts "(Later, back at the ranch...)" b = Thread.new { mutex.synchronize { puts "B: Now I am critical, but am done with cv" cv.signal puts "B: I am still critical, finishing up" } } a.join b.join