X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=include%2Fwimlib%2Flist.h;h=763178ba71f16fb596e3ecfcde22a03ca3f34ead;hp=8541d45d1a426603cb328e04dd298fd6401bdbaf;hb=ac0f66feae348981def9e4fcf0af84868ac0a731;hpb=86a767c28bfb9df8921ef9ff61a32c971beb51aa;ds=sidebyside

diff --git a/include/wimlib/list.h b/include/wimlib/list.h
index 8541d45d..763178ba 100644
--- a/include/wimlib/list.h
+++ b/include/wimlib/list.h
@@ -275,7 +275,17 @@ static inline void INIT_HLIST_NODE(struct hlist_node *h)
 	h->pprev = NULL;
 }
 
-static inline void hlist_del(struct hlist_node *n)
+static inline int hlist_unhashed(const struct hlist_node *h)
+{
+	return !h->pprev;
+}
+
+static inline int hlist_empty(const struct hlist_head *h)
+{
+	return !h->first;
+}
+
+static inline void __hlist_del(struct hlist_node *n)
 {
 	struct hlist_node *next = n->next;
 	struct hlist_node **pprev = n->pprev;
@@ -284,6 +294,23 @@ static inline void hlist_del(struct hlist_node *n)
 		next->pprev = pprev;
 }
 
+static inline void hlist_del(struct hlist_node *n)
+{
+	__hlist_del(n);
+#if 0
+	n->next = LIST_POISON1;
+	n->pprev = LIST_POISON2;
+#endif
+}
+
+static inline void hlist_del_init(struct hlist_node *n)
+{
+	if (!hlist_unhashed(n)) {
+		__hlist_del(n);
+		INIT_HLIST_NODE(n);
+	}
+}
+
 static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
 {
 	struct hlist_node *first = h->first;