#include "platform.h"
#include "gnunet_container_lib.h"
+#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
+
/**
* Element in our linked list.
*/
/**
- * Handle to a singly linked list
+ * Handle to a singly linked list
*/
struct GNUNET_CONTAINER_SList
{
struct GNUNET_CONTAINER_SList_Elem *head;
/**
- * Number of elements in the list.
+ * Tail of the linked list.
*/
- unsigned int length;
-};
-
+ struct GNUNET_CONTAINER_SList_Elem *tail;
-/**
- * Handle to a singly linked list iterator
- */
-struct GNUNET_CONTAINER_SList_Iterator
-{
/**
- * Linked list that we are iterating over.
- */
- struct GNUNET_CONTAINER_SList *list;
-
- /**
- * Last element accessed.
- */
- struct GNUNET_CONTAINER_SList_Elem *last;
-
- /**
- * Current list element.
+ * Number of elements in the list.
*/
- struct GNUNET_CONTAINER_SList_Elem *elem;
+ unsigned int length;
};
+
/**
* Create a new element that is to be inserted into the list
* @internal
* @return a new element
*/
static struct GNUNET_CONTAINER_SList_Elem *
-create_elem (enum GNUNET_CONTAINER_SListDisposition disp,
- const void *buf, size_t len)
+create_elem (enum GNUNET_CONTAINER_SListDisposition disp, const void *buf,
+ size_t len)
{
struct GNUNET_CONTAINER_SList_Elem *e;
if (disp == GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT)
- {
- e = GNUNET_malloc (sizeof (struct GNUNET_CONTAINER_SList_Elem) + len);
- memcpy (&e[1], buf, len);
- e->elem = (void *) &e[1];
- }
+ {
+ e = GNUNET_malloc (sizeof (struct GNUNET_CONTAINER_SList_Elem) + len);
+ memcpy (&e[1], buf, len);
+ e->elem = (void *) &e[1];
+ }
else
- {
- e = GNUNET_malloc (sizeof (struct GNUNET_CONTAINER_SList_Elem));
- e->elem = (void *) buf;
- }
+ {
+ e = GNUNET_malloc (sizeof (struct GNUNET_CONTAINER_SList_Elem));
+ e->elem = (void *) buf;
+ }
e->disp = disp;
e->len = len;
return e;
e = create_elem (disp, buf, len);
e->next = l->head;
l->head = e;
+ if (l->tail == NULL)
+ l->tail = e;
l->length++;
}
+/**
+ * Add a new element to the end of the list
+ * @param l list
+ * @param disp memory disposition
+ * @param buf payload buffer
+ * @param len length of the buffer
+ */
+void
+GNUNET_CONTAINER_slist_add_end (struct GNUNET_CONTAINER_SList *l,
+ enum GNUNET_CONTAINER_SListDisposition disp,
+ const void *buf, size_t len)
+{
+ struct GNUNET_CONTAINER_SList_Elem *e;
+
+ e = create_elem (disp, buf, len);
+ if (l->tail != NULL)
+ l->tail->next = e;
+ if (l->head == NULL)
+ l->head = e;
+ l->tail = e;
+ l->length++;
+}
+
+
+/**
+ * Append a singly linked list to another
+ * @param dst list to append to
+ * @param src source
+ */
+void
+GNUNET_CONTAINER_slist_append (struct GNUNET_CONTAINER_SList *dst,
+ struct GNUNET_CONTAINER_SList *src)
+{
+ struct GNUNET_CONTAINER_SList_Iterator i;
+
+ for (i = GNUNET_CONTAINER_slist_begin (src);
+ GNUNET_CONTAINER_slist_end (&i) != GNUNET_YES;
+ GNUNET_CONTAINER_slist_next (&i))
+
+ {
+ GNUNET_CONTAINER_slist_add (dst,
+ (i.elem->disp ==
+ GNUNET_CONTAINER_SLIST_DISPOSITION_STATIC) ?
+ GNUNET_CONTAINER_SLIST_DISPOSITION_STATIC :
+ GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
+ i.elem->elem, i.elem->len);
+ }
+ GNUNET_CONTAINER_slist_iter_destroy (&i);
+}
+
/**
* Create a new singly linked list
* @param l list
* @return iterator pointing to the beginning
*/
-struct GNUNET_CONTAINER_SList_Iterator *
+struct GNUNET_CONTAINER_SList_Iterator
GNUNET_CONTAINER_slist_begin (struct GNUNET_CONTAINER_SList *l)
{
- struct GNUNET_CONTAINER_SList_Iterator *ret;
+ struct GNUNET_CONTAINER_SList_Iterator ret;
- ret = GNUNET_malloc (sizeof (struct GNUNET_CONTAINER_SList_Iterator));
- ret->elem = l->head;
- ret->list = l;
+ memset (&ret, 0, sizeof (ret));
+ ret.elem = l->head;
+ ret.list = l;
return ret;
}
e = l->head;
while (e != NULL)
- {
- n = e->next;
- if (e->disp == GNUNET_CONTAINER_SLIST_DISPOSITION_DYNAMIC)
- GNUNET_free (e->elem);
- GNUNET_free (e);
- e = n;
- }
+ {
+ n = e->next;
+ if (e->disp == GNUNET_CONTAINER_SLIST_DISPOSITION_DYNAMIC)
+ GNUNET_free (e->elem);
+ GNUNET_free (e);
+ e = n;
+ }
l->head = NULL;
+ l->tail = NULL;
l->length = 0;
}
i->last->next = next;
else
i->list->head = next;
+ if (next == NULL)
+ i->list->tail = i->last;
if (i->elem->disp == GNUNET_CONTAINER_SLIST_DISPOSITION_DYNAMIC)
GNUNET_free (i->elem->elem);
GNUNET_free (i->elem);
before->last->next = e;
else
before->list->head = e;
+ if (e->next == NULL)
+ before->list->tail = e;
before->list->length++;
}
* @param len payload length
* @return payload
*/
-const void *
+void *
GNUNET_CONTAINER_slist_get (const struct GNUNET_CONTAINER_SList_Iterator *i,
size_t * len)
{
* Release an iterator
* @param i iterator
*/
-void GNUNET_CONTAINER_slist_iter_destroy (struct GNUNET_CONTAINER_SList_Iterator *i)
+void
+GNUNET_CONTAINER_slist_iter_destroy (struct GNUNET_CONTAINER_SList_Iterator *i)
{
- GNUNET_free (i);
}
/* end of container_slist.c */