Method: Mongo::BackgroundThread#stop!

Defined in:
lib/mongo/background_thread.rb

#stop! ⇒ true | false

Stop the background thread and wait for to terminate for a reasonable amount of time.

Returns:

  • (true | false) —

    Whether the thread was terminated.



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# File 'lib/mongo/background_thread.rb', line 77

def stop!
  # If the thread was not started, there is nothing to stop.
  #
  # Classes including this module may want to perform additional
  # cleanup, which they can do by overriding this method.
  return true unless @thread

  # Background threads generally perform operations in a loop.
  # This flag is meant to be checked on each iteration of the
  # working loops and the thread should stop working when this flag
  # is set.
  @stop_requested = true

  # Besides setting the flag, a particular class may have additional
  # ways of signaling the background thread to either stop working or
  # wake up to check the stop flag, for example, setting a semaphore.
  # This can be accomplished by providing the pre_stop method.
  pre_stop

  # Now we have requested the graceful termination, and we could wait
  # for the thread to exit on its own accord. A future version of the
  # driver may allow a certain amount of time for the thread to quit.
  # For now, we additionally use the Ruby machinery to request the thread
  # be terminated, and do so immediately.
  #
  # Note that this may cause the background thread to terminate in
  # the middle of an operation.
  @thread.kill

  wait_for_stop
end