Add exit notifiers.
Hook up any cleanup work which needs to be done here. Advantages over
using atexit(3):
(1) You get passed in a pointer to the notifier. If you embed that
into your state struct you can use container_of() to get get your
state info.
(2) You can unregister, say when un-plugging a device.
[ v2: move code out of #ifndef _WIN32 ]
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/vl.c b/vl.c
index df18198..e5e43b3 100644
--- a/vl.c
+++ b/vl.c
@@ -234,6 +234,9 @@
static QEMUBootSetHandler *boot_set_handler;
static void *boot_set_opaque;
+static NotifierList exit_notifiers =
+ NOTIFIER_LIST_INITIALIZER(exit_notifiers);
+
int kvm_allowed = 0;
uint32_t xen_domid;
enum xen_mode xen_mode = XEN_EMULATE;
@@ -1740,6 +1743,21 @@
return 0;
}
+void qemu_add_exit_notifier(Notifier *notify)
+{
+ notifier_list_add(&exit_notifiers, notify);
+}
+
+void qemu_remove_exit_notifier(Notifier *notify)
+{
+ notifier_list_remove(&exit_notifiers, notify);
+}
+
+static void qemu_run_exit_notifiers(void)
+{
+ notifier_list_notify(&exit_notifiers);
+}
+
static const QEMUOption *lookup_opt(int argc, char **argv,
const char **poptarg, int *poptind)
{
@@ -1804,6 +1822,7 @@
int show_vnc_port = 0;
int defconfig = 1;
+ atexit(qemu_run_exit_notifiers);
error_set_progname(argv[0]);
init_clocks();
