Class: Wire

Inherits:
Thread
  • Object
show all
Defined in:
lib/wire.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args, &block) ⇒ Wire

Returns a new instance of Wire.



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# File 'lib/wire.rb', line 9

def initialize(args, &block)
  args.keys.each { |name| instance_variable_set "@" + name.to_s, args[name] }
  
  if @max.to_i <= 0 or @wait.nil?
    warn "Both max and wait needs to be passed, where max > 0. Using default values"
    @max = 10 if @max.to_i <= 0
    @wait ||= 1
  end
  
  @block   = block
  @counter = Wire.counter
  
  @counter.synchronize do
    @counter.cond.wait_until { @counter.i < @max }
    @counter.inc
  end
  
  if @counter.last and (t = Time.now.to_f - @counter.last) < @wait
    sleep (@wait - t)
  end
  
  super { runner }
end

Class Method Details

.counter ⇒ Object 



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# File 'lib/wire.rb', line 5

def self.counter
  @counter ||= Counter.new
end

Instance Method Details

#runner ⇒ Object 



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# File 'lib/wire.rb', line 33

def runner
  @block.call(*@vars)
rescue => error
  raise error
ensure
  @counter.synchronize do
    if @max == @counter.i or @counter.last
      @counter.last = Time.now.to_f
    end
    @counter.dec
    @counter.cond.signal
  end
end