22 lines
278 B
Ruby
22 lines
278 B
Ruby
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# two threads, one mutex
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require 'thread'
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m = Thread::Mutex.new
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r = 0
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max = 2000
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lmax = (max * max)/2
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(1..2).map{
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Thread.new{
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i = 0
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while i<lmax
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i += 1
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m.synchronize{
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r += 1
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}
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end
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}
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}.each{|e|
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e.join
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}
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raise r.to_s if r != max * max
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