fixed and improved linked list

server/include/list.h

@@ -12,8 +12,13 @@
 
 #include <pthread.h>
 
+#include "hooks.h"
+
 /* Forward declarations */
 struct list_elm;
+struct node;
+struct path;
+struct interface;
 
 /** Static list initialization */
 #define LIST_INIT { \
@@ -24,27 +29,41 @@ struct list_elm;
 }
 
 #define FOREACH(list, elm) \
-	for ( struct list_elm *elm = (list)->head, ; \
-		elm != (list)->tail; elm  = elm->next )
+	for ( struct list_elm *elm = (list)->head; \
+		elm; elm = elm->next )
+			
+#define FOREACH_R(list, elm) \
+	for ( struct list_elm *elm = (list)->tail; \
+		elm; elm = elm->prev )
+				
+#define list_first(list)	((list)->head)
+#define list_last(list)		((list)->head)
+#define list_length(list)	((list)->count)
 
 struct list {
-	struct list_elm *head, tail;
+	struct list_elm *head, *tail;
 	int count;
 
-	pthread_mutex_lock_t lock;
+	pthread_mutex_t lock;
 };
 
 struct list_elm {
-	void *data;
+	union {
+		void *ptr;
+		struct node *node;
+		struct path *path;
+		struct interface *interface;
+		hook_cb_t hook;
+	};
 
-	struct list_elm *prev, next;
+	struct list_elm *prev, *next;
 };
 
 void list_init(struct list *l);
 
 void list_destroy(struct list *l);
 
-void list_push(struct list *l, void *d);
+void list_push(struct list *l, void *p);
 
 struct list_elm * list_search(struct list *l, int (*cmp)(void *));
 

server/src/list.c

@@ -7,6 +7,7 @@
  * @file
  */
 
+#include "utils.h"
 #include "list.h"
 
 void list_init(struct list *l)
@@ -33,26 +34,34 @@ void list_destroy(struct list *l)
 	pthread_mutex_destroy(&l->lock);
 }
 
-void list_push(struct list *l, void *d)
+void list_push(struct list *l, void *p)
 {
 	struct list_elm *e = alloc(sizeof(struct list_elm));
 	
 	pthread_mutex_lock(&l->lock);
 	
-	e->data = d;
+	e->ptr = p;
 	e->prev = l->tail;
 	e->next = NULL;
 	
-	l->tail->next = e;
+	if (l->tail)
+		l->tail->next = e;
+	if (l->head)
+		l->head->prev = e;
+	else
+		l->head = e;
+
 	l->tail = e;
 	
+	l->count++;
+
 	pthread_mutex_unlock(&l->lock);
 }
 
 struct list_elm * list_search(struct list *l, int (*cmp)(void *))
 {	
-	foreach(l, it) {
-		if (!cmp(it->data))
+	FOREACH(l, it) {
+		if (!cmp(it->ptr))
 			return it;
 	}