#!/bin/bash
worker() {
	exec 2>>"$tempdir/worker$1.log"
	(( debug >= 2 )) && echo "${cmd_arg[@]}" >&2
	"${cmd_arg[@]}" >/dev/null
}
createworker() {
	worker $1 &
	workers[$1]=$!
}
destroyworker() {
	dyingworker=${workers[$1]}
	unset workers[$1]
	wait $dyingworker
}