From 043b9a7a01bde05b74b878cd961d1935187a1529 Mon Sep 17 00:00:00 2001
From: Sears Russell <sears@cs.berkeley.edu>
Date: Wed, 20 Feb 2008 22:56:52 +0000
Subject: [PATCH] Regions are 1 offset;iterator was totally broken.

---
 src/stasis/operations/regions.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/stasis/operations/regions.c b/src/stasis/operations/regions.c
index 997e70b..dcdf37c 100644
--- a/src/stasis/operations/regions.c
+++ b/src/stasis/operations/regions.c
@@ -105,7 +105,7 @@ int TregionReadBoundaryTag(int xid, pageid_t page, boundary_tag* tag) {
   pthread_mutex_lock(&region_mutex);
   assert(0 == holding_mutex);
   holding_mutex = pthread_self();
-  int ret = readBoundaryTag(xid,page,tag);
+  int ret = readBoundaryTag(xid,page-1,tag);
   holding_mutex = 0;
   pthread_mutex_unlock(&region_mutex);
   return ret;
@@ -173,16 +173,17 @@ int TregionNextBoundaryTag(int xid, pageid_t* pid, boundary_tag * tag, int type)
   holding_mutex = pthread_self();
 
 
-  int ret = readBoundaryTag(xid, *pid, tag);
+  int ret = readBoundaryTag(xid, *pid-1, tag);
   if(ret) { 
     while(1) {
       if(tag->size == UINT32_MAX) {
 	ret = 0;
 	break;
       }
-      *pid += tag->size;
-      ret = readBoundaryTag(xid,*pid, tag);
-      assert(ret); // detected boundary tag corruption.
+      *pid += tag->size+1;
+      int succ = readBoundaryTag(xid,*pid-1, tag);
+      assert(succ); // detect missing boundary tags
+      DEBUG("tag status = %d\n",tag->status);
       if(tag->status == REGION_ZONED && ((!type) || (tag->allocation_manager == type))) {
 	break;
       }