From d656c14ec9ed9ec68abeb68e98e9eaa602d9e11e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Wed, 17 Sep 2014 09:13:51 +0200
Subject: [PATCH] services: user-processes: Wait for complete process
termination.
* gnu/services/base.scm (user-processes-service): Add 'wait' loop.
---
gnu/services/base.scm | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index 3b85363fe2a..9bc78bd1aea 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -182,6 +182,8 @@ (define omitted-pids
(@ (ice-9 rdelim) read-string))))
'()))
+ (define lset= (@ (srfi srfi-1) lset=))
+
;; When this happens, all the processes have been
;; killed, including 'deco', so DMD-OUTPUT-PORT and
;; thus CURRENT-OUTPUT-PORT are dangling.
@@ -206,6 +208,15 @@ (define omitted-pids
(kill-except omitted-pids SIGKILL)
(delete-file #$%do-not-kill-file)))
+ (let wait ()
+ (let ((pids (processes)))
+ (unless (lset= = pids (cons 1 omitted-pids))
+ (format #t "waiting for process termination\
+ (processes left: ~s)~%"
+ pids)
+ (sleep 2)
+ (wait))))
+
(display "all processes have been terminated\n")
#f))
(respawn? #f)))))
--
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