diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2018-04-19 17:01:44 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2018-05-04 08:27:53 +0200 |
| commit | f5a74a5a50387c6f980b2e2f94f062487a1826da (patch) | |
| tree | eefbe4d2f8bb0f889c9643d140fd702f131c4fd0 /include | |
| parent | cb3e7f08aeaab0ab13e629ce8496dca150a449ba (diff) | |
| download | qemu-f5a74a5a50387c6f980b2e2f94f062487a1826da.tar.gz | |
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/qapi/qmp/qnull.h | 3 | ||||
| -rw-r--r-- | include/qapi/qmp/qobject.h | 9 |
2 files changed, 9 insertions, 3 deletions
diff --git a/include/qapi/qmp/qnull.h b/include/qapi/qmp/qnull.h index 75b29c6a39..c1426882c5 100644 --- a/include/qapi/qmp/qnull.h +++ b/include/qapi/qmp/qnull.h @@ -23,8 +23,7 @@ extern QNull qnull_; static inline QNull *qnull(void) { - qobject_ref(&qnull_); - return &qnull_; + return qobject_ref(&qnull_); } bool qnull_is_equal(const QObject *x, const QObject *y); diff --git a/include/qapi/qmp/qobject.h b/include/qapi/qmp/qobject.h index e20006faf5..fcfd549220 100644 --- a/include/qapi/qmp/qobject.h +++ b/include/qapi/qmp/qobject.h @@ -103,8 +103,15 @@ static inline void qobject_unref_impl(QObject *obj) /** * qobject_ref(): Increment QObject's reference count + * + * Returns: the same @obj. The type of @obj will be propagated to the + * return type. */ -#define qobject_ref(obj) qobject_ref_impl(QOBJECT(obj)) +#define qobject_ref(obj) ({ \ + typeof(obj) _o = (obj); \ + qobject_ref_impl(QOBJECT(_o)); \ + _o; \ +}) /** * qobject_unref(): Decrement QObject's reference count, deallocate |