X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Fdaemon.c;h=c72aa302f82ec74f0578e23370619f3d53b2e726;hb=185071b355f704ffe9072b3221eedbda78558dda;hp=82d1c9e5c3c5c9667bbb5853d1c205735d3a7e3b;hpb=573ca6773abadcc7380bf900a6f443119f2e8c01;p=yaz-moved-to-github.git

diff --git a/src/daemon.c b/src/daemon.c
index 82d1c9e..c72aa30 100644
--- a/src/daemon.c
+++ b/src/daemon.c
@@ -62,11 +62,31 @@ static void write_pidfile(int pid_fd)
     }
 }
 
+int child_got_signal_from_us = 0;
 pid_t child_pid = 0;
-static void kill_child_handler(int num)
+static void normal_stop_handler(int num)
 {
     if (child_pid)
+    {
+        /* tell child to terminate . ensure keepalive stops running -
+           let wait(2) wait once - so we exit AFTER the child */
+        child_got_signal_from_us = 1;
         kill(child_pid, num);
+    }
+}
+
+static void graceful_stop_handler(int num)
+{
+    if (child_pid)
+    {
+        /* tell our child to stop listening and wait some in time
+           in the hope that it has stopped listening by then. Then
+           we exit - quite possibly the child is still running - serving
+           remaining requests */
+        kill(child_pid, num);
+        sleep(2);
+        _exit(0);
+    }
 }
 
 static void keepalive(void (*work)(void *data), void *data)
@@ -80,10 +100,10 @@ static void keepalive(void (*work)(void *data), void *data)
     /* keep signals in their original state and make sure that some signals
        to parent process also gets sent to the child.. 
     */
-    old_sighup = signal(SIGHUP, kill_child_handler);
-    old_sigterm = signal(SIGTERM, kill_child_handler);
-    old_sigusr1 = signal(SIGUSR1, kill_child_handler);
-    while (cont)
+    old_sighup = signal(SIGHUP, normal_stop_handler);
+    old_sigterm = signal(SIGTERM, normal_stop_handler);
+    old_sigusr1 = signal(SIGUSR1, graceful_stop_handler);
+    while (cont && !child_got_signal_from_us)
     {
         pid_t p = fork();
         pid_t p1;