func gringoProducer(outGringo *gringo.Gringo, done chan int) {
var i uint64
for ; i < size; i++ {
outGringo.Write(pl)
}
done <- 0
}
func gringoForwarder(inGringo *gringo.Gringo, outGringo *gringo.Gringo, done chan int) {
var i uint64
for ; i < size; i++ {
var rez gringo.Payload = inGringo.Read()
outGringo.Write(rez)
}
done <- 0
}