sway/bin: don't run multiple instances of swaylock

bin/sway_helpers

@@ -22,6 +22,15 @@ function _check_inhibit() {
   fi
 }
 
+function _check_running() {
+  pgrep $1
+  ret=$?
+  if [ $ret -eq 0 ]; then
+    _log _check_running: INFO already running $1
+    exit 1
+  fi
+}
+
 function _set_inhibit() {
   file=$1
   action=$2

bin/sway_lock

@@ -16,6 +16,7 @@ function _clean() {
 function _lock() {
   _check_inhibit $INHIBIT_FILE
   $MEDIA_APP stop
+  _check_running $LOCK_APP
   $LOCK_APP $LOCK_ARGS
 }