From 3afe757a341f656f4468c69d1319c6b6b819b9b3 Mon Sep 17 00:00:00 2001
From: Michael Stapelberg <stapelberg@google.com>
Date: Sat, 14 Jul 2018 16:36:36 +0200
Subject: [PATCH] notify: gracefully handle vanishing processes

---
 internal/notify/notify.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/internal/notify/notify.go b/internal/notify/notify.go
index a6d0fb2..9c035ff 100644
--- a/internal/notify/notify.go
+++ b/internal/notify/notify.go
@@ -40,6 +40,9 @@ func Process(name string, sig os.Signal) error {
 		}
 		b, err := ioutil.ReadFile(filepath.Join("/proc", fi.Name(), "cmdline"))
 		if err != nil {
+			if os.IsNotExist(err) {
+				continue // process vanished
+			}
 			return err
 		}
 		if !strings.HasPrefix(string(b), name) {