benchmark/vm_thread_mutex3.yml


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prelude: |
  # 1000 threads, one mutex
benchmark:
  vm_thread_mutex3: |

    require 'thread'
    m = Thread::Mutex.new
    r = 0
    max = 2000
    (1..max).map{
      Thread.new{
        i = 0
        while i<max
          i += 1
          m.synchronize{
            r += 1
          }
        end
      }
    }.each{|e|
      e.join
    }
    raise r.to_s if r != max * max
loop_count: 1