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Add C comments that HEAP_MOVED_* define usage is only for pre-9.0 binary
upgrades.
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@ -50,7 +50,7 @@
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/time/tqual.c,v 1.116 2010/02/08 04:33:54 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/utils/time/tqual.c,v 1.117 2010/02/08 14:10:21 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -91,7 +91,7 @@ static bool XidInMVCCSnapshot(TransactionId xid, Snapshot snapshot);
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* code in heapam.c relies on that!)
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*
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* Also, if we are cleaning up HEAP_MOVED_IN or HEAP_MOVED_OFF entries, then
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* we can always set the hint bits, since old-style VACUUM FULL always used
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* we can always set the hint bits, since pre-9.0 VACUUM FULL always used
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* synchronous commits and didn't move tuples that weren't previously
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* hinted. (This is not known by this subroutine, but is applied by its
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* callers.) Note: old-style VACUUM FULL is gone, but we have to keep this
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@ -167,6 +167,7 @@ HeapTupleSatisfiesSelf(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
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if (tuple->t_infomask & HEAP_XMIN_INVALID)
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return false;
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/* Used by pre-9.0 binary upgrades */
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -185,6 +186,7 @@ HeapTupleSatisfiesSelf(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
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InvalidTransactionId);
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}
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}
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/* Used by pre-9.0 binary upgrades */
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -338,6 +340,7 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
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if (tuple->t_infomask & HEAP_XMIN_INVALID)
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return false;
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/* Used by pre-9.0 binary upgrades */
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -356,6 +359,7 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
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InvalidTransactionId);
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}
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}
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/* Used by pre-9.0 binary upgrades */
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -502,6 +506,7 @@ HeapTupleSatisfiesToast(HeapTupleHeader tuple, Snapshot snapshot,
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if (tuple->t_infomask & HEAP_XMIN_INVALID)
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return false;
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/* Used by pre-9.0 binary upgrades */
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -520,6 +525,7 @@ HeapTupleSatisfiesToast(HeapTupleHeader tuple, Snapshot snapshot,
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InvalidTransactionId);
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}
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}
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/* Used by pre-9.0 binary upgrades */
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -581,6 +587,7 @@ HeapTupleSatisfiesUpdate(HeapTupleHeader tuple, CommandId curcid,
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if (tuple->t_infomask & HEAP_XMIN_INVALID)
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return HeapTupleInvisible;
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/* Used by pre-9.0 binary upgrades */
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -599,6 +606,7 @@ HeapTupleSatisfiesUpdate(HeapTupleHeader tuple, CommandId curcid,
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InvalidTransactionId);
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}
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}
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/* Used by pre-9.0 binary upgrades */
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -748,6 +756,7 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple, Snapshot snapshot,
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if (tuple->t_infomask & HEAP_XMIN_INVALID)
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return false;
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/* Used by pre-9.0 binary upgrades */
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -766,6 +775,7 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple, Snapshot snapshot,
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InvalidTransactionId);
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}
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}
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/* Used by pre-9.0 binary upgrades */
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -907,6 +917,7 @@ HeapTupleSatisfiesMVCC(HeapTupleHeader tuple, Snapshot snapshot,
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if (tuple->t_infomask & HEAP_XMIN_INVALID)
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return false;
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/* Used by pre-9.0 binary upgrades */
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -925,6 +936,7 @@ HeapTupleSatisfiesMVCC(HeapTupleHeader tuple, Snapshot snapshot,
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InvalidTransactionId);
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}
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}
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/* Used by pre-9.0 binary upgrades */
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -1066,6 +1078,7 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin,
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{
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if (tuple->t_infomask & HEAP_XMIN_INVALID)
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return HEAPTUPLE_DEAD;
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/* Used by pre-9.0 binary upgrades */
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else if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -1083,6 +1096,7 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin,
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SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
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InvalidTransactionId);
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}
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/* Used by pre-9.0 binary upgrades */
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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TransactionId xvac = HeapTupleHeaderGetXvac(tuple);
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/access/htup.h,v 1.111 2010/02/08 04:33:54 tgl Exp $
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* $PostgreSQL: pgsql/src/include/access/htup.h,v 1.112 2010/02/08 14:10:21 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -176,9 +176,11 @@ typedef HeapTupleHeaderData *HeapTupleHeader;
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#define HEAP_XMAX_IS_MULTI 0x1000 /* t_xmax is a MultiXactId */
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#define HEAP_UPDATED 0x2000 /* this is UPDATEd version of row */
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#define HEAP_MOVED_OFF 0x4000 /* moved to another place by
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* old-style VACUUM FULL */
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* pre-9.0 VACUUM FULL; kept
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* for binary upgrade support */
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#define HEAP_MOVED_IN 0x8000 /* moved from another place by
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* old-style VACUUM FULL */
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* pre-9.0 VACUUM FULL; kept
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* for binary upgrade support */
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#define HEAP_MOVED (HEAP_MOVED_OFF | HEAP_MOVED_IN)
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#define HEAP_XACT_MASK 0xFFE0 /* visibility-related bits */
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