LXR qemu/qint.c

   1/*
   2 * QInt Module
   3 *
   4 * Copyright (C) 2009 Red Hat Inc.
   5 *
   6 * Authors:
   7 *  Luiz Capitulino <lcapitulino@redhat.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#include "qint.h"
  14#include "qobject.h"
  15#include "qemu-common.h"
  16
  17static void qint_destroy_obj(QObject *obj);
  18
  19static const QType qint_type = {
  20    .code = QTYPE_QINT,
  21    .destroy = qint_destroy_obj,
  22};
  23
  24/**
  25 * qint_from_int(): Create a new QInt from an int64_t
  26 *
  27 * Return strong reference.
  28 */
  29QInt *qint_from_int(int64_t value)
  30{
  31    QInt *qi;
  32
  33    qi = qemu_malloc(sizeof(*qi));
  34    qi->value = value;
  35    QOBJECT_INIT(qi, &qint_type);
  36
  37    return qi;
  38}
  39
  40/**
  41 * qint_get_int(): Get the stored integer
  42 */
  43int64_t qint_get_int(const QInt *qi)
  44{
  45    return qi->value;
  46}
  47
  48/**
  49 * qobject_to_qint(): Convert a QObject into a QInt
  50 */
  51QInt *qobject_to_qint(const QObject *obj)
  52{
  53    if (qobject_type(obj) != QTYPE_QINT)
  54        return NULL;
  55
  56    return container_of(obj, QInt, base);
  57}
  58
  59/**
  60 * qint_destroy_obj(): Free all memory allocated by a
  61 * QInt object
  62 */
  63static void qint_destroy_obj(QObject *obj)
  64{
  65    assert(obj != NULL);
  66    qemu_free(qobject_to_qint(obj));
  67}
  68