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Park Bench

An elderly man sitting on a park bench watching your code execute, then telling you about it over chess stategy pointers and life stories.

Usage

Inline Benches

scala> new park.Bench() {
  def run = Thread.sleep(1000)
  override def subject = "sleeping beauty"
} watch(1, 1)

               		cpu		    user		  system		real
sleeping beauty		0.000634	0.000133	0.000087	1.000265

Benches as objects

case class Book(name: String, pages: Int)

class BookShelf { def read(book: Book) = Thread.sleep(1000 * book.pages) }

object BookShelfBench extends BookShelf with park.Bench {
  def run = read(Book("a tale of 2 pages", 2))
  override def subject = "reading books from the shelf"
}

BookShelfBench.watch(1, 1)
                            		cpu		    user		  system		real
reading books from the shelf		0.000672	0.000614	0.000083	2.000975


// with 2 iterations of `run`
BookShelfBench.watch(2, 1)
                            		cpu		    user		  system		real
reading books from the shelf		0.000261	0.000182	0.000124	4.000479

// with 2 observations of 2 iterations of `run`
BookShelfBench.watch(2, 2)
                            		cpu		    user		  system		real
reading books from the shelf		0.000228	0.000156	0.000101	4.000368
reading books from the shelf		0.000208	0.000164	0.000083	4.000519

Or how about running this as a main appliction

BookShelfBench.main(Array("1","1"))

Install

TODO

TODO

  • tests

2010-2011 Doug Tangren (softprops)