ofi_list: Add dlist_size

Signed-off-by: Sai Sunku <sunkusa@amazon.com>

include/ofi_list.h

@@ -57,15 +57,23 @@ enum ofi_list_end {
 struct dlist_entry {
 	struct dlist_entry	*next;
 	struct dlist_entry	*prev;
+	OFI_DBG_VAR(ssize_t, size)
+	OFI_DBG_VAR(struct dlist_entry *, list)
 };
 
+#if ENABLE_DEBUG
+#define DLIST_INIT(addr) { addr, addr, 0, addr }
+#else
 #define DLIST_INIT(addr) { addr, addr }
+#endif
 #define DEFINE_LIST(name) struct dlist_entry name = DLIST_INIT(&name)
 
 static inline void dlist_init(struct dlist_entry *head)
 {
 	head->next = head;
 	head->prev = head;
+	OFI_DBG_SET(head->size, 0);
+	OFI_DBG_SET(head->list, head);
 }
 
 static inline int dlist_empty(struct dlist_entry *head)
@@ -80,6 +88,8 @@ dlist_insert_after(struct dlist_entry *item, struct dlist_entry *head)
 	item->prev = head;
 	head->next->prev = item;
 	head->next = item;
+	OFI_DBG_SET(item->list, head->list);
+	OFI_DBG_ADD(item->list->size, 1);
 }
 
 static inline void
@@ -95,6 +105,8 @@ static inline void dlist_remove(struct dlist_entry *item)
 {
 	item->prev->next = item->next;
 	item->next->prev = item->prev;
+	OFI_DBG_ADD(item->list->size, -1);
+	OFI_DBG_SET(item->list, NULL);
 }
 
 static inline void dlist_remove_init(struct dlist_entry *item)
@@ -156,6 +168,18 @@ static inline void dlist_remove_init(struct dlist_entry *item)
 
 typedef int dlist_func_t(struct dlist_entry *item, const void *arg);
 
+#if ENABLE_DEBUG
+static inline ssize_t dlist_size(struct dlist_entry *item)
+{
+	return item->list->size;
+}
+#else
+static inline ssize_t dlist_size(struct dlist_entry *item)
+{
+	return -1;
+}
+#endif
+
 static inline struct dlist_entry *
 dlist_find_first_match(struct dlist_entry *head, dlist_func_t *match,
 		       const void *arg)
@@ -219,6 +243,15 @@ static inline void dlist_splice_head(struct dlist_entry *head,
 	head->next = to_splice->next;
 	head->next->prev = head;
 
+	OFI_DBG_ADD(head->size, to_splice->size);
+#if ENABLE_DEBUG
+	struct dlist_entry *item;
+	dlist_foreach(to_splice, item) {
+		item->list = head->list;
+		item->size = head->size;
+	}
+#endif
+
 	/* set list to empty */
 	dlist_init(to_splice);
 }