[PATCH 21/26] Exit workers if the master disappears

[Simon Horman]

This should allow the master to be restarted, for instance using ruinit,
if it exits for some reason.
---
 src/haproxy.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/haproxy.c b/src/haproxy.c
index 175d3e8..998c4ff 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -983,6 +983,8 @@ static int tell_old_pids(int sig)
 void run_poll_loop()
 {
        int next;
+       pid_t ppid = ((global.mode & MODE_MASTER_WORKER) && !is_master) ?
+                       getppid() : -1;
 
        tv_update_date(0,1);
        while (1) {
@@ -1004,6 +1006,12 @@ void run_poll_loop()
                if (jobs == 0)
                        break;
 
+               if (ppid > 0 && kill(ppid, 0)) {
+                       send_log(NULL, LOG_INFO,
+                                "Parent disappeared, exiting.\n");
+                       break;
+               }
+
                if (is_master) {
                        sleep(1);
                        continue;
-- 
1.7.2.3