From f08c03f3c404e85a2b81890191ccb48dc1ecc157 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Tue, 2 Jul 2013 11:36:39 +0200 Subject: qom: Use atomics for object refcounting Object reference counts will soon be changed outside the BQL. So we need to use atomics in object_ref/unref. Based on a patch by Liu Ping Fan. Signed-off-by: Liu Ping Fan Signed-off-by: Jan Kiszka Signed-off-by: Paolo Bonzini --- qom/object.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/qom/object.c b/qom/object.c index 803b94bb66..cbd7e86033 100644 --- a/qom/object.c +++ b/qom/object.c @@ -683,16 +683,15 @@ GSList *object_class_get_list(const char *implements_type, void object_ref(Object *obj) { - obj->ref++; + atomic_inc(&obj->ref); } void object_unref(Object *obj) { g_assert(obj->ref > 0); - obj->ref--; /* parent always holds a reference to its children */ - if (obj->ref == 0) { + if (atomic_fetch_dec(&obj->ref) == 1) { object_finalize(obj); } } -- cgit v1.2.1