LXR qemu/qapi/qmp-event.c

   1/*
   2 * QMP Event related
   3 *
   4 * Copyright (c) 2014 Wenchao Xia
   5 *
   6 * Authors:
   7 *  Wenchao Xia   <wenchaoqemu@gmail.com>
   8 *
   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.
  11 *
  12 */
  13
  14#include "qemu/osdep.h"
  15
  16#include "qemu-common.h"
  17#include "qapi/qmp-event.h"
  18#include "qapi/qmp/qstring.h"
  19#include "qapi/qmp/qjson.h"
  20
  21static QMPEventFuncEmit qmp_emit;
  22
  23void qmp_event_set_func_emit(QMPEventFuncEmit emit)
  24{
  25    qmp_emit = emit;
  26}
  27
  28QMPEventFuncEmit qmp_event_get_func_emit(void)
  29{
  30    return qmp_emit;
  31}
  32
  33static void timestamp_put(QDict *qdict)
  34{
  35    int err;
  36    QObject *obj;
  37    qemu_timeval tv;
  38
  39    err = qemu_gettimeofday(&tv);
  40    /* Put -1 to indicate failure of getting host time */
  41    obj = qobject_from_jsonf("{ 'seconds': %lld, 'microseconds': %lld }",
  42                             err < 0 ? -1LL : (long long)tv.tv_sec,
  43                             err < 0 ? -1LL : (long long)tv.tv_usec);
  44    qdict_put_obj(qdict, "timestamp", obj);
  45}
  46
  47/*
  48 * Build a QDict, then fill event name and time stamp, caller should free the
  49 * QDict after usage.
  50 */
  51QDict *qmp_event_build_dict(const char *event_name)
  52{
  53    QDict *dict = qdict_new();
  54    qdict_put(dict, "event", qstring_from_str(event_name));
  55    timestamp_put(dict);
  56    return dict;
  57}
  58