Fix purge_expired_registrations to accept passed-in last_purge instead of static function var.

edge_utils.c

@@ -1419,6 +1419,8 @@ int run_edge_loop(n2n_edge_t * eee, int *keep_running) {
   size_t numPurged;
   time_t lastIfaceCheck=0;
   time_t lastTransop=0;
+  time_t last_purge_known = 0;
+  time_t last_purge_pending = 0;
 #ifdef __ANDROID_NDK__
     time_t lastArpPeriod=0;
 #endif
@@ -1502,8 +1504,8 @@ int run_edge_loop(n2n_edge_t * eee, int *keep_running) {
 
     update_supernode_reg(eee, nowTime);
 
-    numPurged =  purge_expired_registrations(&(eee->known_peers));
-    numPurged += purge_expired_registrations(&(eee->pending_peers));
+    numPurged =  purge_expired_registrations(&(eee->known_peers), &last_purge_known);
+    numPurged += purge_expired_registrations(&(eee->pending_peers), &last_purge_pending);
 
     if(numPurged > 0) {
       traceEvent(TRACE_NORMAL, "Peer removed: pending=%u, operational=%u",

n2n.c

@@ -307,18 +307,17 @@ void peer_list_add(struct peer_info * * list,
 }
 
 
-size_t purge_expired_registrations(struct peer_info ** peer_list) {
-  static time_t last_purge = 0;
+size_t purge_expired_registrations(struct peer_info ** peer_list, time_t* p_last_purge) {
   time_t now = time(NULL);
   size_t num_reg = 0;
 
-  if((now - last_purge) < PURGE_REGISTRATION_FREQUENCY) return 0;
+  if((now - (*p_last_purge)) < PURGE_REGISTRATION_FREQUENCY) return 0;
 
   traceEvent(TRACE_INFO, "Purging old registrations");
 
   num_reg = purge_peer_list(peer_list, now-REGISTRATION_TIMEOUT);
 
-  last_purge = now;
+  (*p_last_purge) = now;
   traceEvent(TRACE_INFO, "Remove %ld registrations", num_reg);
 
   return num_reg;

n2n.h

@@ -297,7 +297,7 @@ size_t peer_list_size( const struct peer_info * list );
 size_t purge_peer_list( struct peer_info ** peer_list, 
                         time_t purge_before );
 size_t clear_peer_list( struct peer_info ** peer_list );
-size_t purge_expired_registrations( struct peer_info ** peer_list );
+size_t purge_expired_registrations( struct peer_info ** peer_list, time_t* p_last_purge );
 
 /* version.c */
 extern char *n2n_sw_version, *n2n_sw_osName, *n2n_sw_buildDate;

sn.c

@@ -859,6 +859,7 @@ static int run_loop( n2n_sn_t * sss )
 {
   uint8_t pktbuf[N2N_SN_PKTBUF_SIZE];
   int keep_running=1;
+  time_t last_purge_edges = 0;
 
   sss->start_time = time(NULL);
 
@@ -934,7 +935,7 @@ static int run_loop( n2n_sn_t * sss )
 	  traceEvent( TRACE_DEBUG, "timeout" );
         }
 
-      purge_expired_registrations( &(sss->edges) );
+      purge_expired_registrations( &(sss->edges), &last_purge_edges );
 
     } /* while */