aboutsummaryrefslogtreecommitdiff
path: root/util
diff options
context:
space:
mode:
authorPaul Durrant <paul.durrant@citrix.com>2019-09-13 09:21:56 +0100
committerAnthony PERARD <anthony.perard@citrix.com>2019-09-24 12:18:47 +0100
commit374752a26b0ea487dd49c638ee35b97a58ce8e3b (patch)
treefb774b006d163df618b14c0f72a10ee578210f3a /util
parentdf6180bb56cd03949c2c64083da58755fed81a61 (diff)
downloadqemu-374752a26b0ea487dd49c638ee35b97a58ce8e3b.zip
qemu-374752a26b0ea487dd49c638ee35b97a58ce8e3b.tar.gz
qemu-374752a26b0ea487dd49c638ee35b97a58ce8e3b.tar.bz2
xen / notify: introduce a new XenWatchList abstraction
Xenstore watch call-backs are already abstracted away from XenBus using the XenWatch data structure but the associated NotifierList manipulation and file handle registration is still open coded in various xen_bus_...() functions. This patch creates a new XenWatchList data structure to allow these interactions to be abstracted away from XenBus as well. This is in preparation for a subsequent patch which will introduce separate watch lists for XenBus and XenDevice objects. NOTE: This patch also introduces a new notifier_list_empty() helper function for the purposes of adding an assertion that a XenWatchList is not freed whilst its associated NotifierList is still occupied. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Reviewed-by: Anthony Perard <anthony.perard@citrix.com> Message-Id: <20190913082159.31338-2-paul.durrant@citrix.com> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Diffstat (limited to 'util')
-rw-r--r--util/notify.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/util/notify.c b/util/notify.c
index aee8d93..76bab21 100644
--- a/util/notify.c
+++ b/util/notify.c
@@ -40,6 +40,11 @@ void notifier_list_notify(NotifierList *list, void *data)
}
}
+bool notifier_list_empty(NotifierList *list)
+{
+ return QLIST_EMPTY(&list->notifiers);
+}
+
void notifier_with_return_list_init(NotifierWithReturnList *list)
{
QLIST_INIT(&list->notifiers);