Only use broadcast at the start of the PMTU discovery phase.

[tinc] / src / event.c

diff --git a/src/event.c b/src/event.c
index 028483b..89ee022 100644 (file)
--- a/src/event.c
+++ b/src/event.c
@@ -1,7 +1,7 @@
 /*
     event.c -- event queue
-    Copyright (C) 2002 Guus Sliepen <guus@sliepen.warande.net>,
-                  2002 Ivo Timmermans <itimmermans@bigfoot.com>
+    Copyright (C) 2002-2009 Guus Sliepen <guus@tinc-vpn.org>,
+                  2002-2005 Ivo Timmermans
 
     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
@@ -13,98 +13,102 @@
     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: event.c,v 1.1.4.2 2002/03/01 14:09:30 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 "config.h"
-
-#include <stdlib.h>
-#include <xalloc.h>
-#include <string.h>
-#include <utils.h>
-#include <avl_tree.h>
-#include <time.h>
+#include "system.h"
 
+#include "avl_tree.h"
 #include "event.h"
-
-#include "system.h"
+#include "utils.h"
+#include "xalloc.h"
 
 avl_tree_t *event_tree;
 extern time_t now;
 
-int id;
+static int id;
+
+static int event_compare(const event_t *a, const event_t *b) {
+       if(a->time > b->time)
+               return 1;
+
+       if(a->time < b->time)
+               return -1;
 
-int event_compare(event_t *a, event_t *b)
-{
-  if(a->time > b->time)
-    return 1;
-  if(a->time < b->time)
-    return -1;
-  return a->id - b->id; 
+       return a->id - b->id;
 }
 
-void init_events(void)
-{
-cp
-  event_tree = avl_alloc_tree((avl_compare_t)event_compare, NULL);
-cp
+void init_events(void) {
+       event_tree = avl_alloc_tree((avl_compare_t) event_compare, (avl_action_t) free_event);
 }
 
-void exit_events(void)
-{
-cp
-  avl_delete_tree(event_tree);
-cp
+void exit_events(void) {
+       avl_delete_tree(event_tree);
 }
 
-event_t *new_event(void)
-{
-  event_t *event;
-cp
-  event = (event_t *)xmalloc_and_zero(sizeof(*event));
-cp
-  return event;
+void expire_events(void) {
+       avl_node_t *node;
+       event_t *event;
+       time_t diff;
+
+       /*
+        * Make all events appear expired by substracting the difference between
+         * the expiration time of the last event and the current time.
+        */
+
+       if(!event_tree->tail)
+               return;
+
+       event = event_tree->tail->data;
+       if(event->time <= now)
+               return;
+
+       diff = event->time - now;
+       
+       for(node = event_tree->head; node; node = node->next) {
+               event = node->data;
+               event->time -= diff;
+       }
 }
 
-void free_event(event_t *event)
-{
-cp
-  free(event);
-cp
+event_t *new_event(void) {
+       return xmalloc_and_zero(sizeof(event_t));
 }
 
-void event_add(event_t *event)
-{
-cp
-  event->id = ++id;
-  avl_insert(event_tree, event);
-cp
+void free_event(event_t *event) {
+       free(event);
 }
 
-void event_del(event_t *event)
-{
-cp
-  avl_delete(event_tree, event);
-cp
+void event_add(event_t *event) {
+       event->id = ++id;
+       avl_insert(event_tree, event);
+}
+
+void event_del(event_t *event) {
+       avl_delete(event_tree, event);
+}
+
+event_t *get_expired_event(void) {
+       event_t *event;
+
+       if(event_tree->head) {
+               event = event_tree->head->data;
+
+               if(event->time <= now) {
+                       avl_node_t *node = event_tree->head;
+                       avl_unlink_node(event_tree, node);
+                       free(node);
+                       return event;
+               }
+       }
+
+       return NULL;
 }
 
-event_t *get_expired_event(void)
-{
-  event_t *event;
-cp
-  if(event_tree->head)
-  {
-    event = (event_t *)event_tree->head->data;
-    if(event->time < now)
-    {
-      avl_delete(event_tree, event);
-      return event;
-    }
-  }
-cp  
-  return NULL;
+event_t *peek_next_event(void) {
+       if (event_tree->head)
+               return event_tree->head->data;
+       return NULL;
 }