Use mutex to lock : Mutex « Threads « Ruby

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Ruby » Threads » Mutex   Use mutex to lock $mutex = Mutex.new t1 = Thread.new { $mutex.lock; sleep 30 } sleep 1 t2 = Thread.new do   if $mutex.try_lock     puts "Locked it"   else     puts "Could not lock"   # Prints immediately   end end sleep 2   Related examples in the same category 1.  Classic deadlock: two threads and two locks

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