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/qdict.h"
  20#include "qapi/qmp/qjson.h"
  21
  22static QMPEventFuncEmit qmp_emit;
  23
  24void qmp_event_set_func_emit(QMPEventFuncEmit emit)
  25{
  26    qmp_emit = emit;
  27}
  28
  29QMPEventFuncEmit qmp_event_get_func_emit(void)
  30{
  31    return qmp_emit;
  32}
  33
  34static void timestamp_put(QDict *qdict)
  35{
  36    int err;
  37    QDict *ts;
  38    qemu_timeval tv;
  39
  40    err = qemu_gettimeofday(&tv);
  41    /* Put -1 to indicate failure of getting host time */
  42    ts = qdict_from_jsonf_nofail("{ 'seconds': %lld, 'microseconds': %lld }",
  43                                 err < 0 ? -1LL : (long long)tv.tv_sec,
  44                                 err < 0 ? -1LL : (long long)tv.tv_usec);
  45    qdict_put(qdict, "timestamp", ts);
  46}
  47
  48/*
  49 * Build a QDict, then fill event name and time stamp, caller should free the
  50 * QDict after usage.
  51 */
  52QDict *qmp_event_build_dict(const char *event_name)
  53{
  54    QDict *dict = qdict_new();
  55    qdict_put_str(dict, "event", event_name);
  56    timestamp_put(dict);
  57    return dict;
  58}
  59