qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREF

Now that we can safely call QOBJECT() on QObject * as well as its
subtypes, we can have macros qobject_ref() / qobject_unref() that work
everywhere instead of having to use QINCREF() / QDECREF() for QObject
and qobject_incref() / qobject_decref() for its subtypes.

The replacement is mechanical, except I broke a long line, and added a
cast in monitor_qmp_cleanup_req_queue_locked().  Unlike
qobject_decref(), qobject_unref() doesn't accept void *.

Note that the new macros evaluate their argument exactly once, thus no
need to shout them.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180419150145.24795-4-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Rebased, semantic conflict resolved, commit message improved]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/vhost-user-test.c b/tests/vhost-user-test.c
index 61d9972..bbc8091 100644
--- a/tests/vhost-user-test.c
+++ b/tests/vhost-user-test.c
@@ -727,7 +727,7 @@ static void test_migrate(void)
     rsp = qmp("{ 'execute': 'migrate_set_speed',"
               "'arguments': { 'value': 10 } }");
     g_assert(qdict_haskey(rsp, "return"));
-    QDECREF(rsp);
+    qobject_unref(rsp);
 
     cmd = g_strdup_printf("{ 'execute': 'migrate',"
                           "'arguments': { 'uri': '%s' } }",
@@ -735,7 +735,7 @@ static void test_migrate(void)
     rsp = qmp(cmd);
     g_free(cmd);
     g_assert(qdict_haskey(rsp, "return"));
-    QDECREF(rsp);
+    qobject_unref(rsp);
 
     wait_for_log_fd(s);
 
@@ -751,7 +751,7 @@ static void test_migrate(void)
     rsp = qmp("{ 'execute': 'migrate_set_speed',"
               "'arguments': { 'value': 0 } }");
     g_assert(qdict_haskey(rsp, "return"));
-    QDECREF(rsp);
+    qobject_unref(rsp);
 
     qmp_eventwait("STOP");