Flowdock

Mutex implements a simple semaphore that can be used to coordinate access to shared data from multiple concurrent threads.

Example:

  require 'thread'
  semaphore = Mutex.new

  a = Thread.new {
    semaphore.synchronize {
      # access shared resource
    }
  }

  b = Thread.new {
    semaphore.synchronize {
      # access shared resource
    }
  }
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