async breakout

index.coffee

## coffee --nodejs --expose-gc index.coffee


###
  sam autor asyncu pise ze se to ma udelat takhle

  https://github.com/caolan/async/pull/85#issuecomment-13072390
  or just use a named function for the final callback and call that instead
  of the task callback passed into the successful task function.
###


mem = () -> Math.floor(process.memoryUsage().rss / 1024 / 1024)
logmem = (o) -> console.log  mem() + " MB " + o + " " + (mem() - startmem ) + " MB"
startmem = mem()

async = require 'async'


test = (testdone) ->

	logmem "pred taskama"
	tasks = []
	tasks.push i for i in [1..10000000]
	logmem "tasky v pameti"


	findSeries = (series, done) ->
		async.eachSeries series, (s, next) ->
			return done null, s if s is 10  # vyskocim z asyncu kdykoliv potrebuju
			setTimeout (() -> next()), 0
		, done

	findSeries tasks, () ->
		console.log arguments
		testdone()


test () ->
	logmem 'tesne po dobehnuti'
	setInterval () ->
		global.gc()
		logmem 'po gccku'
	, 1000

24 MB pred taskama 0 MB
166 MB tasky v pameti 142 MB
{ '0': null, '1': 10 }
166 MB tesne po dobehnuti 142 MB
24 MB po gccku 0 MB
24 MB po gccku 0 MB