From 83fa43badc59a54641b0c2319a8a8e4d0f9d9b85 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Sat, 16 Jul 2005 23:48:35 +0000
Subject: [PATCH] Fix cache managament

git-svn-id: file:///home/lennart/svn/public/avahi/trunk@168 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe
---
 avahi-core/browse.c |  9 +++++----
 avahi-core/cache.c  | 27 +++++++++++++++++++--------
 2 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/avahi-core/browse.c b/avahi-core/browse.c
index d9da80c..2d14c90 100644
--- a/avahi-core/browse.c
+++ b/avahi-core/browse.c
@@ -25,6 +25,7 @@
 
 #include "browse.h"
 #include "util.h"
+#include "log.h"
 
 struct AvahiRecordBrowser {
     gboolean dead;
@@ -48,7 +49,7 @@ struct AvahiRecordBrowser {
 static void elapse(AvahiTimeEvent *e, void *userdata) {
     AvahiRecordBrowser *s = userdata;
     GTimeVal tv;
-/*     gchar *t; */
+/*     gchar *t;  */
     
     g_assert(s);
 
@@ -58,9 +59,9 @@ static void elapse(AvahiTimeEvent *e, void *userdata) {
     
     if (s->sec_delay >= 60*60)  /* 1h */
         s->sec_delay = 60*60;
-
-/*     avahi_log_debug("%i. Continuous querying for %s", s->n_query, t = avahi_key_to_string(s->key)); */
-/*     g_free(t); */
+    
+/*     avahi_log_debug("Continuous querying for %s (%i)", t = avahi_key_to_string(s->key), s->sec_delay);  */
+/*     g_free(t);  */
     
     avahi_elapse_time(&tv, s->sec_delay*1000, 0);
     avahi_time_event_queue_update(s->server->time_event_queue, s->time_event, &tv);
diff --git a/avahi-core/cache.c b/avahi-core/cache.c
index 865950f..52304a8 100644
--- a/avahi-core/cache.c
+++ b/avahi-core/cache.c
@@ -27,6 +27,7 @@
 
 #include "util.h"
 #include "cache.h"
+#include "log.h"
 
 #define AVAHI_MAX_CACHE_ENTRIES 200
 
@@ -151,13 +152,16 @@ static void next_expiry(AvahiCache *c, AvahiCacheEntry *e, guint percent);
 
 static void elapse_func(AvahiTimeEvent *t, void *userdata) {
     AvahiCacheEntry *e = userdata;
+/*     gchar *txt; */
     
     g_assert(t);
     g_assert(e);
 
+/*     txt = avahi_record_to_string(e->record); */
+
     if (e->state == AVAHI_CACHE_FINAL) {
         remove_entry(e->cache, e);
-/*         avahi_log_debug("Removing entry from cache due to expiration"); */
+/*         avahi_log_debug("Removing entry from cache due to expiration (%s)", txt);  */
     } else {
         guint percent = 0;
     
@@ -189,13 +193,15 @@ static void elapse_func(AvahiTimeEvent *t, void *userdata) {
 
         /* Request a cache update, if we are subscribed to this entry */
         if (avahi_is_subscribed(e->cache->server, e->cache->interface, e->record->key)) {
-/*             avahi_log_debug("Requesting cache entry update at %i%%.", percent); */
+/*             avahi_log_debug("Requesting cache entry update at %i%% for %s.", percent, txt);  */
             avahi_interface_post_query(e->cache->interface, e->record->key, TRUE);
         }
 
         /* Check again later */
         next_expiry(e->cache, e, percent);
     }
+
+/*     g_free(txt); */
 }
 
 static void update_time_event(AvahiCache *c, AvahiCacheEntry *e) {
@@ -209,20 +215,25 @@ static void update_time_event(AvahiCache *c, AvahiCacheEntry *e) {
 }
 
 static void next_expiry(AvahiCache *c, AvahiCacheEntry *e, guint percent) {
-    gulong usec;
-
     g_assert(c);
     g_assert(e);
     g_assert(percent > 0 && percent <= 100);
+    gdouble usec;
+/*     gchar *txt; */
 
-    e->expiry = e->timestamp;
 
-    usec = e->record->ttl * 10000;
+    usec = (gdouble) e->record->ttl * 10000;
 
     /* 2% jitter */
-    usec = g_random_int_range(usec*percent, usec*(percent+2));
+    usec = g_random_double_range(usec*percent, usec*(percent+2));
+/*     g_message("next expiry: %g (%s)", usec / 1000000.0, txt = avahi_record_to_string(e->record)); */
+/*     g_free(txt); */
+    
+    e->expiry = e->timestamp;
+    g_time_val_add(&e->expiry, (glong) usec);
+
+/*     g_message("wake up in +%lu seconds", e->expiry.tv_sec - e->timestamp.tv_sec); */
     
-    g_time_val_add(&e->expiry, usec);
     update_time_event(c, e);
 }
 
-- 
2.39.5