On 06/04/2010 07:08 AM, Gerd Hoffmann wrote:
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 ]
Applied. Thanks.
Regards,
Anthony Liguori
---
sysemu.h |4
vl.c | 19 +++
3 files changed, 24 insertions(+), 1 deletions(-)
diff --git a/sysemu.h b/sysemu.h
index fd9dd9d..140b7ff 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -6,6 +6,7 @@
#include qemu-option.h
#include qemu-queue.h
#include qemu-timer.h
+#include notify.h
#ifdef _WIN32
#includewindows.h
@@ -51,6 +52,9 @@ int qemu_powerdown_requested(void);
extern qemu_irq qemu_system_powerdown;
void qemu_system_reset(void);
+void qemu_add_exit_notifier(Notifier *notify);
+void qemu_remove_exit_notifier(Notifier *notify);
+
void do_savevm(Monitor *mon, const QDict *qdict);
int load_vmstate(const char *name);
void do_delvm(Monitor *mon, const QDict *qdict);
diff --git a/vl.c b/vl.c
index ac1a998..52c6b22 100644
--- a/vl.c
+++ b/vl.c
@@ -243,6 +243,9 @@ uint8_t qemu_uuid[16];
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;
@@ -2117,6 +2120,21 @@ static int balloon_parse(const char *arg)
return -1;
}
+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);
+}
+
#ifdef _WIN32
static BOOL WINAPI qemu_ctrl_handler(DWORD type)
{
@@ -2583,6 +2601,7 @@ int main(int argc, char **argv, char **envp)
int show_vnc_port = 0;
int defconfig = 1;
+atexit(qemu_run_exit_notifiers);
error_set_progname(argv[0]);
init_clocks();
