util/list: Add list_empty and list_length functions
v2: Don't use C99 when iterating over the list
Acked-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Rob Clark <robclark@freedesktop.org>
diff --git a/src/util/list.h b/src/util/list.h
index 287a494..73b6272 100644
--- a/src/util/list.h
+++ b/src/util/list.h
@@ -38,6 +38,7 @@
#define _UTIL_LIST_H_
+#include <stdbool.h>
#include <stddef.h>
@@ -92,6 +93,20 @@
item->prev = item;
}
+static inline bool list_empty(struct list_head *list)
+{
+ return list->next == list;
+}
+
+static inline unsigned list_length(struct list_head *list)
+{
+ struct list_head *node;
+ unsigned length = 0;
+ for (node = list->next; node != list; node = node->next)
+ length++;
+ return length;
+}
+
#define LIST_INITHEAD(__item) list_inithead(__item)
#define LIST_ADD(__item, __list) list_add(__item, __list)
#define LIST_ADDTAIL(__item, __list) list_addtail(__item, __list)