qint.c

   1 /*
   2  * QInt data type.
   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 GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  */
  12 #include "qint.h"
  13 #include "qobject.h"
  14 #include "qemu-common.h"
  15
  16 static const QType qint_type;
  17
  18 /**
  19  * qint_from_int(): Create a new QInt from an int64_t
  20  *
  21  * Return strong reference.
  22  */
  23 QInt *qint_from_int(int64_t value)
  24 {
  25     QInt *qi;
  26
  27     qi = qemu_malloc(sizeof(*qi));
  28     qi->value = value;
  29     QOBJECT_INIT(qi, &qint_type);
  30
  31     return qi;
  32 }
  33
  34 /**
  35  * qint_get_int(): Get the stored integer
  36  */
  37 int64_t qint_get_int(const QInt *qi)
  38 {
  39     return qi->value;
  40 }
  41
  42 /**
  43  * qobject_to_qint(): Convert a QObject into a QInt
  44  */
  45 QInt *qobject_to_qint(const QObject *obj)
  46 {
  47     if (qobject_type(obj) != QTYPE_QINT)
  48         return NULL;
  49
  50     return container_of(obj, QInt, base);
  51 }
  52
  53 /**
  54  * qint_destroy_obj(): Free all memory allocated by a
  55  * QInt object
  56  */
  57 static void qint_destroy_obj(QObject *obj)
  58 {
  59     assert(obj != NULL);
  60     qemu_free(qobject_to_qint(obj));
  61 }
  62
  63 static const QType qint_type = {
  64     .code = QTYPE_QINT,
  65     .destroy = qint_destroy_obj,
  66 };