1 files changed, 103 insertions, 0 deletions
diff --git a/toss-aws-eip/multitoss.sh b/toss-aws-eip/multitoss.sh
new file mode 100755
index 0000000..78f9f46
--- /dev/null
+++ b/toss-aws-eip/multitoss.sh
@@ -0,0 +1,103 @@
+#!/bin/bash
+declare nb_proc
+declare nb_runs=1
+declare cmdline
+declare flag_help=false
+
+## Func defs
+
+print_help () {
+	cat << EOF
+Run the command in pararrel ensuring the number of sucessful exits.
+Usage: $1 <OPTIONS> <CMDLINE>
+Options:
+  -h  print this message and exit gracefully
+  -p  number of processes to spawn (required)
+  -n  number of successful run to count (default: 1)
+EOF
+}
+
+parse_params () {
+	local name
+	local delta
+
+	while getopts "hp:n:" name
+	do
+		case "$name" in
+		h) flag_help=true ;;
+		p) let "nb_proc=$OPTARG" ;;
+		n) let "nb_runs=$OPTARG" ;;
+		'?') exit 2;;
+		esac
+	done
+
+	let "delta = OPTIND - 1"
+	shift $delta
+
+	cmdline="$@"
+}
+
+spwan_one () {
+	$cmdline &
+}
+
+main () {
+	local procs
+	local ec
+	local good_runs=0
+	local children
+
+	# spwan initial processes
+	for (( procs = 0; procs < nb_proc; procs += 1 ))
+	do
+		spwan_one
+	done
+
+	while true
+	do
+		wait -n
+		ec=$?
+		echo $ec
+
+		if [ $ec -eq 0 ]; then
+			let "good_runs += 1"
+			if [ $good_runs -ge $nb_runs ]; then
+				break
+			else
+				spwan_one
+			fi
+		elif [ $ec -ne 3 ]; then
+			# error occurred or no more child left. do not continue
+			break
+		fi
+	done
+
+	children="$(jobs -p)"
+	[ ! -z "$children" ] && kill -TERM $children 2> /dev/null > /dev/null
+	while wait -n; do : ; done
+
+	return $ec
+}
+
+## Init script
+parse_params $@
+
+## Parametre check
+if $flag_help; then
+	print_help
+	exit 0
+fi
+if [ -z "$nb_proc" ]; then
+	cat << EOF >&2
+-p option not set. Run with -h option for help.
+EOF
+	exit 2
+fi
+if [ -z "$cmdline" ]; then
+	cat << EOF >&2
+CMDLINE not set. Run with -h option for help.
+EOF
+fi
+
+## Main start
+main