Changes in kernel/generic/src/adt/list.c [0a02653:1ab4aca] in mainline

File:

• kernel/generic/src/adt/list.c (modified) (3 diffs)

kernel/generic/src/adt/list.c

@@ -33 +33 @@
 /**
  * @file
- * @brief       Functions completing doubly linked circular list implementaion.
+ * @brief       Functions completing doubly linked circular list implementation.
  *
  * This file contains some of the functions implementing doubly linked circular lists.
@@ -43 +43 @@
 /** Check for membership
  *
- * Check whether link is contained in the list head.
- * The membership is defined as pointer equivalence.
+ * Check whether link is contained in a list.
+ * Membership is defined as pointer equivalence.
  *
- * @param link Item to look for.
- * @param head List to look in.
+ * @param link  Item to look for.
+ * @param list  List to look in.
  *
- * @return true if link is contained in head, false otherwise.
+ * @return true if link is contained in list, false otherwise.
  *
  */
-int list_member(const link_t *link, const link_t *head)
+int list_member(const link_t *link, const list_t *list)
 {
         bool found = false;
-        link_t *hlp = head->next;
+        link_t *hlp = list->head.next;
         
-        while (hlp != head) {
+        while (hlp != &list->head) {
                 if (hlp == link) {
                         found = true;
@@ -68 +68 @@
 }
 
-
 /** Concatenate two lists
  *
- * Concatenate lists head1 and head2, producing a single
- * list head1 containing items from both (in head1, head2
- * order) and empty list head2.
+ * Concatenate lists @a list1 and @a list2, producing a single
+ * list @a list1 containing items from both (in @a list1, @a list2
+ * order) and empty list @a list2.
  *
- * @param head1 First list and concatenated output
- * @param head2 Second list and empty output.
+ * @param list1         First list and concatenated output
+ * @param list2         Second list and empty output.
  *
  */
-void list_concat(link_t *head1, link_t *head2)
+void list_concat(list_t *list1, list_t *list2)
 {
-        if (list_empty(head2))
+        if (list_empty(list2))
                 return;
 
-        head2->next->prev = head1->prev;
-        head2->prev->next = head1;      
-        head1->prev->next = head2->next;
-        head1->prev = head2->prev;
-        list_initialize(head2);
+        list2->head.next->prev = list1->head.prev;
+        list2->head.prev->next = &list1->head;
+        list1->head.prev->next = list2->head.next;
+        list1->head.prev = list2->head.prev;
+        list_initialize(list2);
+}
+
+/** Count list items
+ *
+ * Return the number of items in the list.
+ *
+ * @param list          List to count.
+ * @return              Number of items in the list.
+ */
+unsigned int list_count(const list_t *list)
+{
+        unsigned int count = 0;
+        
+        list_foreach(*list, link) {
+                count++;
+        }
+        
+        return count;
 }