qemu/include/qapi/qmp/qnull.h
Marc-André Lureau f5a74a5a50 qobject: Modify qobject_ref() to return obj
For convenience and clarity, make it possible to call qobject_ref() at
the time when the reference is associated with a variable, or
argument, by making qobject_ref() return the same pointer as given.
Use that to simplify the callers.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180419150145.24795-5-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Useless change to qobject_ref_impl() dropped, commit message improved
slightly]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-05-04 08:27:53 +02:00

32 lines
538 B
C

/*
* QNull
*
* Copyright (C) 2015 Red Hat, Inc.
*
* Authors:
* Markus Armbruster <armbru@redhat.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2.1
* or later. See the COPYING.LIB file in the top-level directory.
*/
#ifndef QNULL_H
#define QNULL_H
#include "qapi/qmp/qobject.h"
struct QNull {
struct QObjectBase_ base;
};
extern QNull qnull_;
static inline QNull *qnull(void)
{
return qobject_ref(&qnull_);
}
bool qnull_is_equal(const QObject *x, const QObject *y);
#endif /* QNULL_H */