Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 45 insertions, 0 deletions

diff --git a/qapi/qmp-event.c b/qapi/qmp-event.c
new file mode 100644
index 000000000..19d3cd003
--- /dev/null
+++ b/qapi/qmp-event.c
@@ -0,0 +1,45 @@
+/*
+ * QMP Event related
+ *
+ * Copyright (c) 2014 Wenchao Xia
+ *
+ * Authors:
+ *  Wenchao Xia   <wenchaoqemu@gmail.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+
+#include "qapi/qmp-event.h"
+#include "qapi/qmp/qstring.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qjson.h"
+
+static void timestamp_put(QDict *qdict)
+{
+    int err;
+    QDict *ts;
+    qemu_timeval tv;
+
+    err = qemu_gettimeofday(&tv);
+    /* Put -1 to indicate failure of getting host time */
+    ts = qdict_from_jsonf_nofail("{ 'seconds': %lld, 'microseconds': %lld }",
+                                 err < 0 ? -1LL : (long long)tv.tv_sec,
+                                 err < 0 ? -1LL : (long long)tv.tv_usec);
+    qdict_put(qdict, "timestamp", ts);
+}
+
+/*
+ * Build a QDict, then fill event name and time stamp, caller should free the
+ * QDict after usage.
+ */
+QDict *qmp_event_build_dict(const char *event_name)
+{
+    QDict *dict = qdict_new();
+    qdict_put_str(dict, "event", event_name);
+    timestamp_put(dict);
+    return dict;
+}