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    int64_t sec, usec;
  39
  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;
  48    }
  49
  50    obj = qobject_from_jsonf("{ 'seconds': %" PRId64 ", "
  51                             "'microseconds': %" PRId64 " }",
  52                             sec, usec);
  53    qdict_put_obj(qdict, "timestamp", obj);
  54}
  55
  56/*
  57 * Build a QDict, then fill event name and time stamp, caller should free the
  58 * QDict after usage.
  59 */
  60QDict *qmp_event_build_dict(const char *event_name)
  61{
  62    QDict *dict = qdict_new();
  63    qdict_put(dict, "event", qstring_from_str(event_name));
  64    timestamp_put(dict);
  65    return dict;
  66}
  67