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[tor-commits] [tor/master] Adjust systemd watchdog support



commit 2f46e5e7558ca3b7dab16fb970d16c1a3dfd190c
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Tue Dec 23 11:27:16 2014 -0500

    Adjust systemd watchdog support
    
    Document why we divide it by two.
    
    Check for > 0 instead of nonzero for success, since that's what the
    manpage says.
    
    Allow watchdog timers greater than 1 second.
---
 src/or/main.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/or/main.c b/src/or/main.c
index 5a17212..58e3ad3 100644
--- a/src/or/main.c
+++ b/src/or/main.c
@@ -2045,11 +2045,15 @@ do_main_loop(void)
 #ifdef HAVE_SYSTEMD_209
   uint64_t watchdog_delay;
   /* set up systemd watchdog notification. */
-  if (sd_watchdog_enabled(1, &watchdog_delay)) {
+  if (sd_watchdog_enabled(1, &watchdog_delay) > 0) {
     if (! systemd_watchdog_timer) {
       struct timeval watchdog;
-      watchdog.tv_sec = 0;
-      watchdog.tv_usec = watchdog_delay/2;
+      /* The manager will "act on" us if we don't send them a notification
+       * every 'watchdog_delay' microseconds.  So, send notifications twice
+       * that often.  */
+      watchdog_delay /= 2;
+      watchdog.tv_sec = watchdog_delay  / 1000000;
+      watchdog.tv_usec = watchdog_delay % 1000000;
 
       systemd_watchdog_timer = periodic_timer_new(tor_libevent_get_base(),
                                                   &watchdog,



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