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-rw-r--r--include/ouroboros/list.h98
-rw-r--r--src/lib/CMakeLists.txt1
-rw-r--r--src/lib/list.c125
3 files changed, 135 insertions, 89 deletions
diff --git a/include/ouroboros/list.h b/include/ouroboros/list.h
index 5ac68d9f..49163efd 100644
--- a/include/ouroboros/list.h
+++ b/include/ouroboros/list.h
@@ -49,22 +49,6 @@ struct list_head {
(ptr)->next = (ptr); (ptr)->prev = (ptr); \
} while (0)
-/*
- * Insert a new entry between two known consecutive entries.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
- */
-static void __list_add(struct list_head * new,
- struct list_head * prev,
- struct list_head * next)
-{
- next->prev = new;
- new->next = next;
- new->prev = prev;
- prev->next = new;
-}
-
/**
* list_add - add a new entry
* @new: new entry to be added
@@ -74,10 +58,7 @@ static void __list_add(struct list_head * new,
* This is good for implementing stacks.
*/
void list_add(struct list_head * new,
- struct list_head * head)
-{
- __list_add(new, head, head->next);
-}
+ struct list_head * head);
/**
* list_add_tail - add a new entry
@@ -88,24 +69,7 @@ void list_add(struct list_head * new,
* This is useful for implementing queues.
*/
void list_add_tail(struct list_head * new,
- struct list_head * head)
-{
- __list_add(new, head->prev, head);
-}
-
-/*
- * Delete a list entry by making the prev/next entries
- * point to each other.
- *
- * This is only for internal list manipulation where we know
- * the prev/next entries already!
- */
-static void __list_del(struct list_head * prev,
- struct list_head * next)
-{
- next->prev = prev;
- prev->next = next;
-}
+ struct list_head * head);
/**
* list_del - deletes entry from list.
@@ -113,22 +77,13 @@ static void __list_del(struct list_head * prev,
* Note: list_empty on entry does not return true after this,
* the entry is in an undefined state.
*/
-void list_del(struct list_head * entry)
-{
- __list_del(entry->prev, entry->next);
- entry->next = (void *) 0;
- entry->prev = (void *) 0;
-}
+void list_del(struct list_head * entry);
/**
* list_del_init - deletes entry from list and reinitialize it.
* @entry: the element to delete from the list.
*/
-void list_del_init(struct list_head * entry)
-{
- __list_del(entry->prev, entry->next);
- INIT_LIST_HEAD(entry);
-}
+void list_del_init(struct list_head * entry);
/**
* list_move - delete from one list and add as another's head
@@ -136,11 +91,7 @@ void list_del_init(struct list_head * entry)
* @head: the head that will precede our entry
*/
void list_move(struct list_head * list,
- struct list_head * head)
-{
- __list_del(list->prev, list->next);
- list_add(list, head);
-}
+ struct list_head * head);
/**
* list_move_tail - delete from one list and add as another's tail
@@ -148,34 +99,13 @@ void list_move(struct list_head * list,
* @head: the head that will follow our entry
*/
void list_move_tail(struct list_head * list,
- struct list_head * head)
-{
- __list_del(list->prev, list->next);
- list_add_tail(list, head);
-}
+ struct list_head * head);
/**
* list_empty - tests whether a list is empty
* @head: the list to test.
*/
-int list_empty(struct list_head * head)
-{
- return head->next == head;
-}
-
-static void __list_splice(struct list_head *list,
- struct list_head *head)
-{
- struct list_head *first = list->next;
- struct list_head *last = list->prev;
- struct list_head *at = head->next;
-
- first->prev = head;
- head->next = first;
-
- last->next = at;
- at->prev = last;
-}
+int list_empty(struct list_head * head);
/**
* list_splice - join two lists
@@ -183,11 +113,7 @@ static void __list_splice(struct list_head *list,
* @head: the place to add it in the first list.
*/
void list_splice(struct list_head * list,
- struct list_head * head)
-{
- if (!list_empty(list))
- __list_splice(list, head);
-}
+ struct list_head * head);
/**
* list_splice_init - join two lists and reinitialise the emptied list.
@@ -197,13 +123,7 @@ void list_splice(struct list_head * list,
* The list at @list is reinitialised
*/
void list_splice_init(struct list_head * list,
- struct list_head * head)
-{
- if (!list_empty(list)) {
- __list_splice(list, head);
- INIT_LIST_HEAD(list);
- }
-}
+ struct list_head * head);
/**
* list_entry - get the struct for this entry
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index c52a5609..589c8769 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -12,6 +12,7 @@ set(SOURCE_FILES
du_buff.c
ipcp.c
irm.c
+ list.c
rina_name.c
sockets.c
)
diff --git a/src/lib/list.c b/src/lib/list.c
new file mode 100644
index 00000000..75063e22
--- /dev/null
+++ b/src/lib/list.c
@@ -0,0 +1,125 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Simple doubly linked list implementation.
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ *
+ * This file is from the Linux Kernel (include/linux/list.h)
+ * and modified by simply removing hardware prefetching of list items.
+ * Here by copyright, credits attributed to wherever they belong.
+ * Kulesh Shanmugasundaram (kulesh [squiggly] isis.poly.edu)
+ *
+ * Sander Vrijders <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <ouroboros/list.h>
+
+static void __list_add(struct list_head * new,
+ struct list_head * prev,
+ struct list_head * next)
+{
+ next->prev = new;
+ new->next = next;
+ new->prev = prev;
+ prev->next = new;
+}
+
+void list_add(struct list_head * new,
+ struct list_head * head)
+{
+ __list_add(new, head, head->next);
+}
+
+void list_add_tail(struct list_head * new,
+ struct list_head * head)
+{
+ __list_add(new, head->prev, head);
+}
+
+static void __list_del(struct list_head * prev,
+ struct list_head * next)
+{
+ next->prev = prev;
+ prev->next = next;
+}
+
+void list_del(struct list_head * entry)
+{
+ __list_del(entry->prev, entry->next);
+ entry->next = (void *) 0;
+ entry->prev = (void *) 0;
+}
+
+void list_del_init(struct list_head * entry)
+{
+ __list_del(entry->prev, entry->next);
+ INIT_LIST_HEAD(entry);
+}
+
+void list_move(struct list_head * list,
+ struct list_head * head)
+{
+ __list_del(list->prev, list->next);
+ list_add(list, head);
+}
+
+void list_move_tail(struct list_head * list,
+ struct list_head * head)
+{
+ __list_del(list->prev, list->next);
+ list_add_tail(list, head);
+}
+
+int list_empty(struct list_head * head)
+{
+ return head->next == head;
+}
+
+static void __list_splice(struct list_head *list,
+ struct list_head *head)
+{
+ struct list_head *first = list->next;
+ struct list_head *last = list->prev;
+ struct list_head *at = head->next;
+
+ first->prev = head;
+ head->next = first;
+
+ last->next = at;
+ at->prev = last;
+}
+
+void list_splice(struct list_head * list,
+ struct list_head * head)
+{
+ if (!list_empty(list))
+ __list_splice(list, head);
+}
+
+void list_splice_init(struct list_head * list,
+ struct list_head * head)
+{
+ if (!list_empty(list)) {
+ __list_splice(list, head);
+ INIT_LIST_HEAD(list);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 22:36:38 +0000