From: bdemsky <bdemsky@uci.edu>
Date: Sun, 24 Jul 2016 05:09:36 +0000 (-0700)
Subject: more bugs
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=iotcloud.git;a=commitdiff_plain;h=d37f854060c432c26db183a41b68a926a2590cbe

more bugs
---

diff --git a/src/java/iotcloud/SlotBuffer.java b/src/java/iotcloud/SlotBuffer.java
index e3ababf..054d4fc 100644
--- a/src/java/iotcloud/SlotBuffer.java
+++ b/src/java/iotcloud/SlotBuffer.java
@@ -43,11 +43,17 @@ class SlotBuffer {
 	void putSlot(Slot s) {
 		array[head]=s;
 		head++;
+		if (head >= array.length)
+			head=0;
+		
 		if (oldestseqn==0)
 			oldestseqn = s.getSequenceNumber();
 
 		if (head==tail) {
 			tail++;
+			if (tail >= array.length)
+				tail=0;
+			
 			oldestseqn++;
 		}
 	}
@@ -64,7 +70,15 @@ class SlotBuffer {
 		if (index >= array.length ||
 				index >= head)
 			return null;
+		if (index < 0) {
+			System.out.println("seqnum="+seqnum);
+			System.out.println("olestseqn="+oldestseqn);
+			System.out.println("diff="+diff);
+			System.out.println("tail="+tail);
 
+
+		}
+		
 		return array[index];
 	}
 
diff --git a/src/java/iotcloud/Table.java b/src/java/iotcloud/Table.java
index d3bac3d..72b4927 100644
--- a/src/java/iotcloud/Table.java
+++ b/src/java/iotcloud/Table.java
@@ -109,7 +109,8 @@ final public class Table {
 		
     if ((numslots - buffer.size()) < FREE_SLOTS) {
       //have to check whether we have enough free slots
-      seqn = buffer.getNewestSeqNum() + 1 - numslots;
+      long fullfirstseqn = buffer.getNewestSeqNum() + 1 - numslots;
+			seqn = fullfirstseqn < 1 ? 1: fullfirstseqn;
       for(int i=0; i < FREE_SLOTS; i++, seqn++) {
         Slot prevslot=buffer.getSlot(seqn);
         if (!prevslot.isLive())