[Qemu-devel] [PATCH v5 12/12] suspend: add qmp events

[Gerd Hoffmann <kraxel@redhat.com>]

Send qmp events on suspend and wakeup so libvirt
has a chance to track the vm state.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 monitor.c |    6 ++++++
 monitor.h |    2 ++
 vl.c      |   15 +++++++++++++++
 3 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/monitor.c b/monitor.c
index aadbdcb..e6f5fad 100644
--- a/monitor.c
+++ b/monitor.c
@@ -485,6 +485,12 @@ void monitor_protocol_event(MonitorEvent event, QObject *data)
         case QEVENT_BLOCK_JOB_CANCELLED:
             event_name = "BLOCK_JOB_CANCELLED";
             break;
+        case QEVENT_SUSPEND:
+            event_name = "SUSPEND";
+            break;
+        case QEVENT_WAKEUP:
+            event_name = "WAKEUP";
+            break;
         default:
             abort();
             break;
diff --git a/monitor.h b/monitor.h
index b72ea07..9df3bab 100644
--- a/monitor.h
+++ b/monitor.h
@@ -38,6 +38,8 @@ typedef enum MonitorEvent {
     QEVENT_SPICE_DISCONNECTED,
     QEVENT_BLOCK_JOB_COMPLETED,
     QEVENT_BLOCK_JOB_CANCELLED,
+    QEVENT_SUSPEND,
+    QEVENT_WAKEUP,
     QEVENT_MAX,
 } MonitorEvent;
 
diff --git a/vl.c b/vl.c
index bfdcb7c..570ea05 100644
--- a/vl.c
+++ b/vl.c
@@ -1416,6 +1416,7 @@ static void qemu_system_suspend(void)
 {
     pause_all_vcpus();
     notifier_list_notify(&suspend_notifiers, NULL);
+    monitor_protocol_event(QEVENT_SUSPEND, NULL);
     is_suspended = true;
 }
 
@@ -1436,12 +1437,26 @@ void qemu_register_suspend_notifier(Notifier *notifier)
 
 void qemu_system_wakeup_request(WakeupReason reason)
 {
+    static const char *names[] = {
+        [QEMU_WAKEUP_REASON_OTHER]   = "other",
+        [QEMU_WAKEUP_REASON_RTC]     = "rtc",
+        [QEMU_WAKEUP_REASON_PMTIMER] = "pmtimer",
+    };
+    const char *name;
+    QObject *data;
+
     if (!is_suspended) {
         return;
     }
     if (!(wakeup_reason_mask & (1 << reason))) {
         return;
     }
+
+    name = (reason < ARRAY_SIZE(names)) ? names[reason] : "unknown";
+    data = qobject_from_jsonf("{ 'reason': %s }", name);
+    monitor_protocol_event(QEVENT_WAKEUP, data);
+    qobject_decref(data);
+
     notifier_list_notify(&wakeup_notifiers, &reason);
     reset_requested = 1;
     qemu_notify_event();
-- 
1.7.1