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Add C comments that HEAP_MOVED_* define usage is only for pre-9.0 binary

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upgrades.
This commit is contained in:
Bruce Momjian
2010-02-08 14:10:21 +00:00
parent 3ab41f02ed
commit dfc902854a
2 changed files with 21 additions and 5 deletions
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8
src/include/access/htup.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/htup.h,v 1.111 2010/02/08 04:33:54 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/htup.h,v 1.112 2010/02/08 14:10:21 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -176,9 +176,11 @@ typedef HeapTupleHeaderData *HeapTupleHeader;
#define HEAP_XMAX_IS_MULTI 0x1000 /* t_xmax is a MultiXactId */
#define HEAP_UPDATED 0x2000 /* this is UPDATEd version of row */
#define HEAP_MOVED_OFF 0x4000 /* moved to another place by
* old-style VACUUM FULL */
* pre-9.0 VACUUM FULL; kept
* for binary upgrade support */
#define HEAP_MOVED_IN 0x8000 /* moved from another place by
* old-style VACUUM FULL */
* pre-9.0 VACUUM FULL; kept
* for binary upgrade support */
#define HEAP_MOVED (HEAP_MOVED_OFF | HEAP_MOVED_IN)
#define HEAP_XACT_MASK 0xFFE0 /* visibility-related bits */