usb-bot: hotplug support
[qemu/kevin.git] / qapi / qmp-event.c
blob8bba165bfb770985df55b67ca46e1f785d8caf3b
1 /*
2 * QMP Event related
4 * Copyright (c) 2014 Wenchao Xia
6 * Authors:
7 * Wenchao Xia <wenchaoqemu@gmail.com>
9 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
10 * See the COPYING.LIB file in the top-level directory.
14 #include "qemu/osdep.h"
16 #include "qemu-common.h"
17 #include "qapi/qmp-event.h"
18 #include "qapi/qmp/qstring.h"
19 #include "qapi/qmp/qjson.h"
21 static QMPEventFuncEmit qmp_emit;
23 void qmp_event_set_func_emit(QMPEventFuncEmit emit)
25 qmp_emit = emit;
28 QMPEventFuncEmit qmp_event_get_func_emit(void)
30 return qmp_emit;
33 static void timestamp_put(QDict *qdict)
35 int err;
36 QObject *obj;
37 qemu_timeval tv;
38 int64_t sec, usec;
40 err = qemu_gettimeofday(&tv);
41 if (err < 0) {
42 /* Put -1 to indicate failure of getting host time */
43 sec = -1;
44 usec = -1;
45 } else {
46 sec = tv.tv_sec;
47 usec = tv.tv_usec;
50 obj = qobject_from_jsonf("{ 'seconds': %" PRId64 ", "
51 "'microseconds': %" PRId64 " }",
52 sec, usec);
53 qdict_put_obj(qdict, "timestamp", obj);
57 * Build a QDict, then fill event name and time stamp, caller should free the
58 * QDict after usage.
60 QDict *qmp_event_build_dict(const char *event_name)
62 QDict *dict = qdict_new();
63 qdict_put(dict, "event", qstring_from_str(event_name));
64 timestamp_put(dict);
65 return dict;