Class: ParallelQueue

Inherits:
Queue
  • Object
show all
Includes:
Parallel::ProcessorCount
Defined in:
lib/parallelQueue.rb

Overview

ParallelQueue is nothing but a regular queue with the ability to store blocks or methods (plus aruments)

Instance Method Summary collapse

Instance Method Details

#justRun(workers = processor_count) ⇒ Object

run the given calls WITHOUT automatic result storage, but faster



46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
 
# File 'lib/parallelQueue.rb', line 46

def justRun(workers=processor_count)
  @threads = (1..workers).map {|i|
    Thread.new(self) {|q|
      until ( q == ( task = q.deq ) )
        if task.size > 1
          if task[0].kind_of? Proc
            # Expects proc/lambda with arguments, e.g. [mysqrt,2.789]
            task[0].call(*task[1..-1])
          else
            # expect an object in task[0] and one of its methods with
            # arguments in task[1] as a symbol
            # e.g. [a,[:attribute=,1]
            task[0].send(task[1],*task[2..-1])
          end
        else
          task[0].call
        end
      end
    }
  }
  @threads.size.times { self.enq self}
  @threads.each {|t| t.join}
end

#push(*item, &block) ⇒ Object

puts code to the queue as a

  • method: push(method,arg1,arg2,…)

  • block: push { … }



17
18
19
20
 
# File 'lib/parallelQueue.rb', line 17

def push (*item, &block)
  queue_push(item   ) unless item.empty?
  queue_push([block]) unless block.nil?
end

#queue_push ⇒ Object 



11
 
# File 'lib/parallelQueue.rb', line 11

alias :queue_push :push

#run(workers = processor_count) ⇒ Object

run things with the ‘parallel’ library - results are returned automatically



23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/parallelQueue.rb', line 23

def run(workers=processor_count)
  queue_push(Parallel::Stop)
  Parallel.map(self,:in_threads => workers) {|task|
    if task.size > 1
      if task[0].kind_of? Proc
        # Expects proc/lambda with arguments,e.g.
        # [mysqrt,2.789]
        # [myproc,x,y,z]
        task[0].call(*task[1..-1])
      else
        # expect an object in task[0] and one of its methods with arguments
        # in task[1] as a symbol
        # e.g. [a,[:attribute=,1] or
        # Math,:exp,0
        task[0].send(task[1],*task[2..-1])
      end
    else
      task[0].call
    end
  }
end