Class: Pwrake::LocalityConditionVariable

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

Instance Method Summary collapse

Instance Method Details

#broadcast(hints = nil) ⇒ Object 



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# File 'lib/pwrake/locality_aware_queue.rb', line 41

def broadcast(hints=nil)
  if hints.nil?
    super()
  elsif Array===hints
      threads = []
      @waiters_mutex.synchronize do
        hints.each do |h|
          @waiters.each do |t,v|
            if t[:hint] == h
              threads << t
              break
            end
          end
        end
        threads.each do |t|
          @waiters.delete(t)
        end
      end
      Log.debug "--- LCV#broadcast: hints=#{hints.inspect} threads_to_run=#{threads.inspect} @waiters.size=#{@waiters.size}"
      threads.each do |t|
        begin
          t.run
        rescue ThreadError
        end
      end
  else
    raise ArgumentError,"argument must be an Array"
  end
  self
end

#signal(hints = nil) ⇒ Object 



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# File 'lib/pwrake/locality_aware_queue.rb', line 11

def signal(hints=nil)
  if hints.nil?
    super()
  elsif Array===hints
      thread = nil
      @waiters_mutex.synchronize do
        @waiters.each do |t,v|
          if hints.include?(t[:hint])
            thread = t
            break
          end
        end
        if thread
          @waiters.delete(thread)
        else
          thread,_ = @waiters.shift
        end
      end
      Log.debug "--- LCV#signal: hints=#{hints.inspect} thread_to_run=#{thread.inspect} @waiters.size=#{@waiters.size}"
      begin
        thread.run if thread
      rescue ThreadError
        retry # t was already dead?
      end
  else
    raise ArgumentError,"argument must be an Array"
  end
  self
end