From 3bbb022045ae3726420d124f38b5c11755e42d07 Mon Sep 17 00:00:00 2001
From: Eugene Kim <ek@harmony.one>
Date: Fri, 14 Jun 2019 20:07:18 +0000
Subject: [PATCH] Add kill_node utility function

---
 scripts/node.sh | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/scripts/node.sh b/scripts/node.sh
index 6239e8fe7..41bec7f39 100755
--- a/scripts/node.sh
+++ b/scripts/node.sh
@@ -237,6 +237,29 @@ kill_child() {
    kill "${pid}"
 }
 
+# Kill nodes that are direct child of this script (pid $$),
+# i.e. run directly from main loop.
+kill_node() {
+   local pids pid delay
+
+   msg "finding node processes that are our children"
+   pids=$(
+      ps axcwwo "pid=,ppid=,command=" |
+      awk -v me=$$ '$2 == me && $3 == "harmony" { print $1; }'
+   )
+   msg "found node processes: ${pids:-"<none>"}"
+   for pid in ${pids}
+   do
+      delay=0
+      while kill_child ${pid}
+      do
+         sleep ${delay}
+         delay=1
+      done
+      msg "pid ${pid} no longer running"
+   done
+}
+
 {
    # TODO ek – implement me
 } &