Convert atexit users to exit_notifier

All of these users have global state so we really don't see a benefit from
exit_notifier.  However, using exit_notifier means that there's one less
justification for having global state in the first place.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/hw/xen_domainbuild.c b/hw/xen_domainbuild.c
index 2f59856f73..b735ca453d 100644
--- a/hw/xen_domainbuild.c
+++ b/hw/xen_domainbuild.c
@@ -211,7 +211,7 @@ static int xen_domain_watcher(void)
 }
 
 /* normal cleanup */
-static void xen_domain_cleanup(void)
+static void xen_domain_cleanup(Notifier *notifier)
 {
     char *dom;
 
@@ -232,6 +232,7 @@ int xen_domain_build_pv(const char *kernel, const char *ramdisk,
     unsigned int xenstore_port = 0, console_port = 0;
     unsigned long xenstore_mfn = 0, console_mfn = 0;
     int rc;
+    static Notifier exit_notifier = { .notify = xen_domain_cleanup };
 
     memcpy(uuid, qemu_uuid, sizeof(uuid));
     rc = xc_domain_create(xen_xc, ssidref, uuid, flags, &xen_domid);
@@ -240,7 +241,7 @@ int xen_domain_build_pv(const char *kernel, const char *ramdisk,
         goto err;
     }
     qemu_log("xen: created domain %d\n", xen_domid);
-    atexit(xen_domain_cleanup);
+    exit_notifier_add(&exit_notifier);
     if (xen_domain_watcher() == -1) {
         goto err;
     }