benchmark/vm_thread_condvar1.yml


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prelude: |
  # two threads, two mutex, two condvar ping-pong
benchmark:
  vm_thread_condvar1: |
    require 'thread'
    m1 = Mutex.new
    m2 = Mutex.new
    cv1 = ConditionVariable.new
    cv2 = ConditionVariable.new
    max = 100000
    i = 0
    wait = nil
    m2.synchronize do
      wait = Thread.new do
        m1.synchronize do
          m2.synchronize { cv2.signal }
          while (i += 1) < max
            cv1.wait(m1)
            cv2.signal
          end
        end
      end
      cv2.wait(m2)
    end
    m1.synchronize do
      while i < max
        cv1.signal
        cv2.wait(m1)
      end
    end
    wait.join
loop_count: 1