Debug stuff added to BlowawayRelationBuffers().

diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index f8b6c579c83261bbb3523c36c25929fed889cf1f..f6fc503d4badc857e258b7aa11b0fd956f86d2a7 100644 (file)
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *   $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.27 1997/10/12 07:12:02 vadim Exp $
+ *   $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.28 1997/10/22 19:04:43 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1631,9 +1631,18 @@ BlowawayRelationBuffers(Relation rdesc, BlockNumber block)
                buf->tag.blockNum >= block)
            {
                if (buf->flags & BM_DIRTY)
+               {
+                   elog (NOTICE, "BlowawayRelationBuffers(%s (local), %u): block %u is dirty",
+                       rdesc->rd_rel->relname.data, block, buf->tag.blockNum);
                    return (-1);
+               }
                if (LocalRefCount[i] > 0)
+               {
+                   elog (NOTICE, "BlowawayRelationBuffers(%s (local), %u): block %u is referenced (%d)",
+                       rdesc->rd_rel->relname.data, block, 
+                       buf->tag.blockNum, LocalRefCount[i]);
                    return (-2);
+               }
                buf->tag.relId.relId = InvalidOid;
            }
        }
@@ -1650,11 +1659,17 @@ BlowawayRelationBuffers(Relation rdesc, BlockNumber block)
        {
            if (buf->flags & BM_DIRTY)
            {
+               elog (NOTICE, "BlowawayRelationBuffers(%s, %u): block %u is dirty (private %d, last %d, global %d)",
+                   buf->sb_relname, block, buf->tag.blockNum, 
+                   PrivateRefCount[i], LastRefCount[i], buf->refcount);
                SpinRelease(BufMgrLock);
                return (-1);
            }
            if (!(buf->flags & BM_FREE))
            {
+               elog (NOTICE, "BlowawayRelationBuffers(%s, %u): block %u is referenced (private %d, last %d, global %d)",
+                   buf->sb_relname, block, buf->tag.blockNum, 
+                   PrivateRefCount[i], LastRefCount[i], buf->refcount);
                SpinRelease(BufMgrLock);
                return (-2);
            }