Class: CopyTunerClient::QueueWithTimeout

Inherits:
Object
  • Object
show all
Defined in:
lib/copy_tuner_client/queue_with_timeout.rb

Overview

https://spin.atomicobject.com/2014/07/07/ruby-queue-pop-timeout/

Instance Method Summary collapse

Constructor Details

#initialize ⇒ QueueWithTimeout

Returns a new instance of QueueWithTimeout.



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# File 'lib/copy_tuner_client/queue_with_timeout.rb', line 4

def initialize
  @mutex = Mutex.new
  @queue = []
  @received = ConditionVariable.new
end

Instance Method Details

#<<(item) ⇒ Object 



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# File 'lib/copy_tuner_client/queue_with_timeout.rb', line 10

def <<(item)
  @mutex.synchronize do
    @queue << item
    @received.signal
  end
end

#pop(non_block = false) ⇒ Object 



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# File 'lib/copy_tuner_client/queue_with_timeout.rb', line 26

def pop(non_block = false)
  pop_with_timeout(non_block ? 0 : nil)
end

#pop_with_timeout(timeout = nil) ⇒ Object 



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# File 'lib/copy_tuner_client/queue_with_timeout.rb', line 30

def pop_with_timeout(timeout = nil)
  @mutex.synchronize do
    wait_for_item(timeout)

    # if we're still empty after the timeout, raise exception
    raise ThreadError, 'queue empty' if @queue.empty?

    @queue.shift
  end
end

#uniq_push(item) ⇒ Object 



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# File 'lib/copy_tuner_client/queue_with_timeout.rb', line 17

def uniq_push(item)
  @mutex.synchronize do
    unless @queue.member?(item)
      @queue << item
      @received.signal
    end
  end
end