fcf73f66a6
qobject_to_qfloat() and qobject_to_qint() crash on null, which is a trap for the unwary. Return null instead, and simplify a few callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1444918537-18107-5-git-send-email-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
68 lines
1.2 KiB
C
68 lines
1.2 KiB
C
/*
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* QInt Module
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*
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* Copyright (C) 2009 Red Hat Inc.
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*
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* Authors:
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* Luiz Capitulino <lcapitulino@redhat.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*/
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#include "qapi/qmp/qint.h"
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#include "qapi/qmp/qobject.h"
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#include "qemu-common.h"
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static void qint_destroy_obj(QObject *obj);
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static const QType qint_type = {
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.code = QTYPE_QINT,
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.destroy = qint_destroy_obj,
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};
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/**
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* qint_from_int(): Create a new QInt from an int64_t
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*
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* Return strong reference.
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*/
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QInt *qint_from_int(int64_t value)
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{
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QInt *qi;
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qi = g_malloc(sizeof(*qi));
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qi->value = value;
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QOBJECT_INIT(qi, &qint_type);
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return qi;
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}
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/**
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* qint_get_int(): Get the stored integer
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*/
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int64_t qint_get_int(const QInt *qi)
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{
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return qi->value;
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}
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/**
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* qobject_to_qint(): Convert a QObject into a QInt
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*/
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QInt *qobject_to_qint(const QObject *obj)
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{
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if (!obj || qobject_type(obj) != QTYPE_QINT) {
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return NULL;
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}
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return container_of(obj, QInt, base);
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}
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/**
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* qint_destroy_obj(): Free all memory allocated by a
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* QInt object
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*/
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static void qint_destroy_obj(QObject *obj)
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{
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assert(obj != NULL);
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g_free(qobject_to_qint(obj));
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}
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