/*
edge.c -- edge tree management
- Copyright (C) 2000-2003 Guus Sliepen <guus@sliepen.eu.org>,
- 2000-2003 Ivo Timmermans <ivo@o2w.nl>
+ Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
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
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.
-
- $Id: edge.c,v 1.1.2.23 2003/07/24 12:08:15 guus Exp $
+ 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.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "system.h"
-#include "avl_tree.h"
+#include "splay_tree.h"
#include "edge.h"
#include "logger.h"
+#include "meshlink_internal.h"
#include "netutl.h"
#include "node.h"
#include "utils.h"
#include "xalloc.h"
-avl_tree_t *edge_weight_tree; /* Tree with all edges, sorted on weight */
-
-static int edge_compare(const edge_t *a, const edge_t *b)
-{
+static int edge_compare(const edge_t *a, const edge_t *b) {
return strcmp(a->to->name, b->to->name);
}
-static int edge_weight_compare(const edge_t *a, const edge_t *b)
-{
+static int edge_weight_compare(const edge_t *a, const edge_t *b) {
int result;
result = a->weight - b->weight;
return strcmp(a->to->name, b->to->name);
}
-void init_edges(void)
-{
- cp();
-
- edge_weight_tree =
- avl_alloc_tree((avl_compare_t) edge_weight_compare, NULL);
+void init_edges(meshlink_handle_t *mesh) {
+ mesh->edges = splay_alloc_tree((splay_compare_t) edge_weight_compare, NULL);
}
-avl_tree_t *new_edge_tree(void)
-{
- cp();
-
- return avl_alloc_tree((avl_compare_t) edge_compare, NULL);
+splay_tree_t *new_edge_tree(void) {
+ return splay_alloc_tree((splay_compare_t) edge_compare, (splay_action_t) free_edge);
}
-void free_edge_tree(avl_tree_t *edge_tree)
-{
- cp();
-
- avl_delete_tree(edge_tree);
+void free_edge_tree(splay_tree_t *edge_tree) {
+ splay_delete_tree(edge_tree);
}
-void exit_edges(void)
-{
- cp();
-
- avl_delete_tree(edge_weight_tree);
+void exit_edges(meshlink_handle_t *mesh) {
+ splay_delete_tree(mesh->edges);
}
/* Creation and deletion of connection elements */
-edge_t *new_edge(void)
-{
- cp();
-
- return (edge_t *) xmalloc_and_zero(sizeof(edge_t));
+edge_t *new_edge(void) {
+ return xzalloc(sizeof(edge_t));
}
-void free_edge(edge_t *e)
-{
- cp();
+void free_edge(edge_t *e) {
+ sockaddrfree(&e->address);
free(e);
}
-void edge_add(edge_t *e)
-{
- cp();
-
- avl_insert(edge_weight_tree, e);
- avl_insert(e->from->edge_tree, e);
+void edge_add(meshlink_handle_t *mesh, edge_t *e) {
+ splay_insert(mesh->edges, e);
+ splay_insert(e->from->edge_tree, e);
e->reverse = lookup_edge(e->to, e->from);
e->reverse->reverse = e;
}
-void edge_del(edge_t *e)
-{
- cp();
-
+void edge_del(meshlink_handle_t *mesh, edge_t *e) {
if(e->reverse)
e->reverse->reverse = NULL;
- avl_delete(e->from->edge_tree, e);
- avl_delete(edge_weight_tree, e);
+ splay_delete(mesh->edges, e);
+ splay_delete(e->from->edge_tree, e);
}
-edge_t *lookup_edge(const node_t *from, const node_t *to)
-{
- edge_t v = {
- .from = from,
- .to = to
- };
+edge_t *lookup_edge(node_t *from, node_t *to) {
+ edge_t v;
- cp();
-
- return avl_search(from->edge_tree, &v);
-}
+ v.from = from;
+ v.to = to;
-void dump_edges(void)
-{
- avl_node_t *node, *node2;
- node_t *n;
- edge_t *e;
- char *address;
-
- cp();
-
- logger(LOG_DEBUG, _("Edges:"));
-
- for(node = node_tree->head; node; node = node->next) {
- n = (node_t *) node->data;
- for(node2 = n->edge_tree->head; node2; node2 = node2->next) {
- e = (edge_t *) node2->data;
- address = sockaddr2hostname(&e->address);
- logger(LOG_DEBUG, _(" %s to %s at %s options %lx weight %d"),
- e->from->name, e->to->name, address, e->options, e->weight);
- free(address);
- }
- }
-
- logger(LOG_DEBUG, _("End of edges."));
+ return splay_search(from->edge_tree, &v);
}