Class: Pwrake::NBIO::FiberReaderQueue

Inherits:
Object
  • Object
show all
Defined in:
lib/pwrake/nbio.rb

Overview

Instance Method Summary collapse

Constructor Details

#initialize(reader) ⇒ FiberReaderQueue

Returns a new instance of FiberReaderQueue.



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# File 'lib/pwrake/nbio.rb', line 432

def initialize(reader)
  @reader = reader
  @q = []
  @waiter = []
  @halting = false
end

Instance Method Details

#deq ⇒ Object Also known as: get_line 



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# File 'lib/pwrake/nbio.rb', line 445

def deq
  while @q.empty?
    return nil if @halting
    @waiter.push(Fiber.current)
    @reader.select_io
  end
  @q.shift
end

#enq(x) ⇒ Object 



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# File 'lib/pwrake/nbio.rb', line 439

def enq(x)
  @q.push(x)
  f = @waiter.shift
  f.resume if f
end

#halt ⇒ Object 



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# File 'lib/pwrake/nbio.rb', line 456

def halt
  @halting = true
  while f = @waiter.shift
    f.resume
  end
ensure
  @halting = false
end