usage() {
echo
- echo "Usage: $0 [-h|--help] [-t|--timeout <value>] [-f|--file] <data>"
+ echo "Usage: $0 [-h|--help] [-t|--timeout <value>] [-f|--file] [-p|--ping] <data>"
echo
echo " -h|--help: this usage help."
echo " -t|--timeout: timeout for operation in seconds."
- echo " Defaults to 2 seconds if not provided."
+ echo " Defaults to $TIMEOUT__dflt seconds if not provided."
echo
echo " -f|--file: the parameter 'data' will be interpreted as a file"
echo " with one operation per line. If missing, it will be"
echo " a single operation string."
echo
+ echo " -p|--ping: Check the target process id."
+ echo " Returns 1 (dead) or 0 (alive)."
+ echo
echo " data: operation string or file with several operations."
echo
echo " For example:"
is_file=
timeout=$TIMEOUT__dflt
data=
+ ping=
while [ $# -gt 0 ]; do
case $1 in
shift
;;
+ -p|--ping)
+ ping=yes
+ ;;
+
*)
first=$(echo $1 | cut -c1)
[ "$first" = "-" ] && _exit "Unsupported script option: $1. Type '$SCR_BN -h' (or --help) to print the available options."
shift
done
- [ -z "$data" ] && _exit "Missing data value"
+ [ -z "$ping" -a -z "$data" ] && _exit "Missing data value"
}
# $1: pid to check
check_pid() {
kill -0 $1 2>/dev/null
- [ $? -ne 0 ] && _exit "Operation error: missing process with pid $1"
+ return $?
}
#############
[ "$1" = "" -o "$1" = "--help" -o "$1" = "-h" ] && usage
parse_arguments $@
+# Check pid:
+check_pid $PID
+res=$?
+[ -n "$ping" ] && exit $res
+[ $res -ne 0 ] && _exit "Operation error: missing process with pid $PID"
+
# Send operation:
if [ -n "$is_file" ]
then
- grep -v "^#" $data | sed '/^[ \t]*$/d' > sigusr2.in
+ cp $data sigusr2.in
else
echo $data > sigusr2.in
fi
-0> sigusr2.out
+0>sigusr2.out
check_pid $PID
kill -s SIGUSR2 $PID
# Detect EOF and print all except that last line:
-sleep $timeout &
-timerPid=$!
-rm -f .operation_eof
-tail -n0 -F --pid=$timerPid sigusr2.out | while read line
-do
- if echo $line | grep "^EOF" >/dev/null; then
- touch .operation_eof
- # stop the timer
- kill -13 $timerPid
+count=$((10*timeout))
+expired=yes
+while [ $count -gt 0 ]
+do
+ sleep 0.1
+ count=$((count-1))
+ if tail -1 sigusr2.out | grep "^EOF" >/dev/null; then
+ expired=
+ break;
fi
-done
+done
-if [ -f .operation_eof ]
+if [ -z "$expired" ]
then
head --lines=-1 sigusr2.out
else
_exit "Operation error: timeout expired ($timeout seconds)"
fi
-exception=$(grep exception sigusr2.out)
-[ $? -eq 0 -a "$data" != "help" ] && _exit "(detected 'exception' within operation output)"
+exception=$(grep "^Operation processed with exception: " sigusr2.out)
+[ $? -eq 0 ] && _exit "(detected 'exception' within operation output: see 'launcher.trace')"
exit 0