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Commit 1a4a032

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nbtree: Rename BT_HEAP_TID_ATTR.
Author: Peter Geoghegan Reviewed-By: Heikki Linnakangas
1 parent a0dc3c1 commit 1a4a032

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1 file changed

+5
-6
lines changed

1 file changed

+5
-6
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src/include/access/nbtree.h

+5-6
Original file line numberDiff line numberDiff line change
@@ -263,9 +263,8 @@ typedef struct BTMetaPageData
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* offset field only stores the number of columns/attributes when the
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* INDEX_ALT_TID_MASK bit is set, which doesn't count the trailing heap
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* TID column sometimes stored in pivot tuples -- that's represented by
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* the presence of BT_HEAP_TID_ATTR. The INDEX_ALT_TID_MASK bit in t_info
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* is always set on BTREE_VERSION 4. BT_HEAP_TID_ATTR can only be set on
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* BTREE_VERSION 4.
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* the presence of BT_PIVOT_HEAP_TID_ATTR. The INDEX_ALT_TID_MASK bit in
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* t_info is always set on BTREE_VERSION 4 pivot tuples.
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*
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* In version 3 indexes, the INDEX_ALT_TID_MASK flag might not be set in
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* pivot tuples. In that case, the number of key columns is implicitly
@@ -296,7 +295,7 @@ typedef struct BTMetaPageData
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/* Item pointer offset bits */
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#define BT_RESERVED_OFFSET_MASK 0xF000
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#define BT_N_KEYS_OFFSET_MASK 0x0FFF
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#define BT_HEAP_TID_ATTR 0x1000
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#define BT_PIVOT_HEAP_TID_ATTR 0x1000
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/* Get/set downlink block number in pivot tuple */
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#define BTreeTupleGetDownLink(itup) \
@@ -347,7 +346,7 @@ typedef struct BTMetaPageData
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#define BTreeTupleGetHeapTID(itup) \
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( \
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(itup)->t_info & INDEX_ALT_TID_MASK && \
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(ItemPointerGetOffsetNumberNoCheck(&(itup)->t_tid) & BT_HEAP_TID_ATTR) != 0 ? \
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(ItemPointerGetOffsetNumberNoCheck(&(itup)->t_tid) & BT_PIVOT_HEAP_TID_ATTR) != 0 ? \
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( \
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(ItemPointer) (((char *) (itup) + IndexTupleSize(itup)) - \
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sizeof(ItemPointerData)) \
@@ -362,7 +361,7 @@ typedef struct BTMetaPageData
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do { \
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Assert((itup)->t_info & INDEX_ALT_TID_MASK); \
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ItemPointerSetOffsetNumber(&(itup)->t_tid, \
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ItemPointerGetOffsetNumberNoCheck(&(itup)->t_tid) | BT_HEAP_TID_ATTR); \
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ItemPointerGetOffsetNumberNoCheck(&(itup)->t_tid) | BT_PIVOT_HEAP_TID_ATTR); \
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} while(0)
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/*

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