[GNUnet-SVN] r1102 - GNUnet/src/applications/topology_default

[durner]

Author: durner
Date: 2005-06-27 14:15:09 -0700 (Mon, 27 Jun 2005)
New Revision: 1102

Modified:
   GNUnet/src/applications/topology_default/topology.c
Log:
We don't need a strong RNG here. random() reduces the load on slow machines 
dramatically.

Modified: GNUnet/src/applications/topology_default/topology.c
===================================================================
--- GNUnet/src/applications/topology_default/topology.c 2005-06-27 21:01:13 UTC 
(rev 1101)
+++ GNUnet/src/applications/topology_default/topology.c 2005-06-27 21:15:09 UTC 
(rev 1102)
@@ -52,16 +52,16 @@
 #define LIVE_SCAN_FREQUENCY 500 * cronMILLIS
 
 /**
- * Value > 1 that determines the chance (1:LSE) that the cron job
+ * Value < 1 that determines the chance (1:(1/LSE)) that the cron job
  * actually tries to do something for a given slot.
  */
-#define LIVE_SCAN_EFFECTIVENESS 10
+#define LIVE_SCAN_EFFECTIVENESS 0.1
 
 /**
- * Value > 1 that determines the chance (1:LPE) that the cron job
+ * Value < 1 that determines the chance (1:(1/LPE)) that the cron job
  * actually tries to ping a peer that is about to time-out.
  */
-#define LIVE_PING_EFFECTIVENESS 100
+#define LIVE_PING_EFFECTIVENESS 0.01
 
 static CoreAPIForApplication * coreAPI;
 
@@ -259,7 +259,7 @@
   if (minint == 0)
     minint = 1;
   for (i=slotCount-1;i>=0;i--) {
-    if (randomi(LIVE_SCAN_EFFECTIVENESS) != 0)
+    if (((double) random() / RAND_MAX) > LIVE_SCAN_EFFECTIVENESS)
       continue;
     if ( (minint > coreAPI->isSlotUsed(i)) &&
         (! testConfigurationString("GNUNETD",
@@ -267,7 +267,7 @@
                                    "YES")) )
       scanForHosts(i);
   }
-  if (randomi(LIVE_PING_EFFECTIVENESS) == 0)
+  if (((double) random() / RAND_MAX) <= LIVE_PING_EFFECTIVENESS)
     active = coreAPI->forAllConnectedNodes
       (&checkNeedForPing,
        NULL);