mirror of https://github.com/postgres/postgres
Make sure that all variants of HeapTupleSatisfies will do the right thing
if presented with a tuple in process of being moved by VACUUM. Per bug report from Brian Hirt.
This commit is contained in:
Tom Lane
parent
e71493300c
commit
de59370844
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.44 2001/10/28 06:25:58 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.45 2001/12/19 17:18:39 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -31,7 +31,7 @@ bool ReferentialIntegritySnapshotOverride = false;
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/*
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* HeapTupleSatisfiesItself
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* True iff heap tuple is valid for "itself."
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* "{it}self" means valid as of everything that's happened
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* "itself" means valid as of everything that's happened
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* in the current transaction, _including_ the current command.
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*
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* Note:
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@ -53,7 +53,6 @@ bool ReferentialIntegritySnapshotOverride = false;
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bool
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HeapTupleSatisfiesItself(HeapTupleHeader tuple)
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{
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if (!(tuple->t_infomask & HEAP_XMIN_COMMITTED))
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{
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if (tuple->t_infomask & HEAP_XMIN_INVALID)
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@ -61,26 +60,43 @@ HeapTupleSatisfiesItself(HeapTupleHeader tuple)
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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if (TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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return false;
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if (!TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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{
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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}
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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}
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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if (!TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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if (!TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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if (TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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return false;
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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else
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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}
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}
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}
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else if (TransactionIdIsCurrentTransactionId(tuple->t_xmin))
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{
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if (tuple->t_infomask & HEAP_XMAX_INVALID) /* xid invalid */
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return true;
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Assert(TransactionIdIsCurrentTransactionId(tuple->t_xmax));
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if (tuple->t_infomask & HEAP_MARKED_FOR_UPDATE)
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return true;
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return false;
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}
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else if (!TransactionIdDidCommit(tuple->t_xmin))
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@ -89,9 +105,11 @@ HeapTupleSatisfiesItself(HeapTupleHeader tuple)
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tuple->t_infomask |= HEAP_XMIN_INVALID; /* aborted */
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return false;
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}
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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else
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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/* the tuple was inserted validly */
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/* by here, the inserting transaction has committed */
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if (tuple->t_infomask & HEAP_XMAX_INVALID) /* xid invalid or aborted */
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return true;
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@ -117,7 +135,7 @@ HeapTupleSatisfiesItself(HeapTupleHeader tuple)
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return true;
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}
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/* by here, deleting transaction has committed */
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/* xmax transaction committed */
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tuple->t_infomask |= HEAP_XMAX_COMMITTED;
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if (tuple->t_infomask & HEAP_MARKED_FOR_UPDATE)
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@ -177,18 +195,31 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple)
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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if (TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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return false;
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if (!TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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{
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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}
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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}
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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if (!TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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if (!TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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if (TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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return false;
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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else
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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}
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}
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}
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else if (TransactionIdIsCurrentTransactionId(tuple->t_xmin))
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@ -215,7 +246,8 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple)
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tuple->t_infomask |= HEAP_XMIN_INVALID; /* aborted */
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return false;
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}
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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else
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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/* by here, the inserting transaction has committed */
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@ -257,92 +289,106 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple)
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}
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int
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HeapTupleSatisfiesUpdate(HeapTuple tuple)
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HeapTupleSatisfiesUpdate(HeapTuple htuple)
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{
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HeapTupleHeader th = tuple->t_data;
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HeapTupleHeader tuple = htuple->t_data;
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if (AMI_OVERRIDE)
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return HeapTupleMayBeUpdated;
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if (!(th->t_infomask & HEAP_XMIN_COMMITTED))
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if (!(tuple->t_infomask & HEAP_XMIN_COMMITTED))
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{
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if (th->t_infomask & HEAP_XMIN_INVALID) /* xid invalid or aborted */
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if (tuple->t_infomask & HEAP_XMIN_INVALID)
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return HeapTupleInvisible;
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if (th->t_infomask & HEAP_MOVED_OFF)
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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if (TransactionIdDidCommit((TransactionId) th->t_cmin))
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{
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th->t_infomask |= HEAP_XMIN_INVALID;
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if (TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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return HeapTupleInvisible;
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if (!TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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{
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return HeapTupleInvisible;
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}
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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}
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else if (th->t_infomask & HEAP_MOVED_IN)
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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if (!TransactionIdDidCommit((TransactionId) th->t_cmin))
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if (!TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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{
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th->t_infomask |= HEAP_XMIN_INVALID;
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return HeapTupleInvisible;
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if (TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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return HeapTupleInvisible;
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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else
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return HeapTupleInvisible;
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}
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}
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}
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else if (TransactionIdIsCurrentTransactionId(th->t_xmin))
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else if (TransactionIdIsCurrentTransactionId(tuple->t_xmin))
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{
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if (CommandIdGEScanCommandId(th->t_cmin))
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if (CommandIdGEScanCommandId(tuple->t_cmin))
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return HeapTupleInvisible; /* inserted after scan
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* started */
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if (th->t_infomask & HEAP_XMAX_INVALID) /* xid invalid */
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if (tuple->t_infomask & HEAP_XMAX_INVALID) /* xid invalid */
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return HeapTupleMayBeUpdated;
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Assert(TransactionIdIsCurrentTransactionId(th->t_xmax));
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Assert(TransactionIdIsCurrentTransactionId(tuple->t_xmax));
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if (th->t_infomask & HEAP_MARKED_FOR_UPDATE)
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if (tuple->t_infomask & HEAP_MARKED_FOR_UPDATE)
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return HeapTupleMayBeUpdated;
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if (CommandIdGEScanCommandId(th->t_cmax))
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if (CommandIdGEScanCommandId(tuple->t_cmax))
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return HeapTupleSelfUpdated; /* updated after scan
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* started */
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else
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return HeapTupleInvisible; /* updated before scan
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* started */
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}
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else if (!TransactionIdDidCommit(th->t_xmin))
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else if (!TransactionIdDidCommit(tuple->t_xmin))
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{
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if (TransactionIdDidAbort(th->t_xmin))
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th->t_infomask |= HEAP_XMIN_INVALID; /* aborted */
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if (TransactionIdDidAbort(tuple->t_xmin))
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tuple->t_infomask |= HEAP_XMIN_INVALID; /* aborted */
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return HeapTupleInvisible;
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}
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th->t_infomask |= HEAP_XMIN_COMMITTED;
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else
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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/* by here, the inserting transaction has committed */
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if (th->t_infomask & HEAP_XMAX_INVALID) /* xid invalid or aborted */
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if (tuple->t_infomask & HEAP_XMAX_INVALID) /* xid invalid or aborted */
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return HeapTupleMayBeUpdated;
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if (th->t_infomask & HEAP_XMAX_COMMITTED)
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if (tuple->t_infomask & HEAP_XMAX_COMMITTED)
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{
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if (th->t_infomask & HEAP_MARKED_FOR_UPDATE)
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if (tuple->t_infomask & HEAP_MARKED_FOR_UPDATE)
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return HeapTupleMayBeUpdated;
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return HeapTupleUpdated; /* updated by other */
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}
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if (TransactionIdIsCurrentTransactionId(th->t_xmax))
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if (TransactionIdIsCurrentTransactionId(tuple->t_xmax))
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{
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if (th->t_infomask & HEAP_MARKED_FOR_UPDATE)
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if (tuple->t_infomask & HEAP_MARKED_FOR_UPDATE)
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return HeapTupleMayBeUpdated;
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if (CommandIdGEScanCommandId(th->t_cmax))
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if (CommandIdGEScanCommandId(tuple->t_cmax))
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return HeapTupleSelfUpdated; /* updated after scan
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* started */
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else
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return HeapTupleInvisible; /* updated before scan started */
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}
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if (!TransactionIdDidCommit(th->t_xmax))
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if (!TransactionIdDidCommit(tuple->t_xmax))
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{
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if (TransactionIdDidAbort(th->t_xmax))
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if (TransactionIdDidAbort(tuple->t_xmax))
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{
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th->t_infomask |= HEAP_XMAX_INVALID; /* aborted */
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tuple->t_infomask |= HEAP_XMAX_INVALID; /* aborted */
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return HeapTupleMayBeUpdated;
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}
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/* running xact */
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@ -350,9 +396,9 @@ HeapTupleSatisfiesUpdate(HeapTuple tuple)
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}
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/* xmax transaction committed */
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th->t_infomask |= HEAP_XMAX_COMMITTED;
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tuple->t_infomask |= HEAP_XMAX_COMMITTED;
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if (th->t_infomask & HEAP_MARKED_FOR_UPDATE)
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if (tuple->t_infomask & HEAP_MARKED_FOR_UPDATE)
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return HeapTupleMayBeUpdated;
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return HeapTupleUpdated; /* updated by other */
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@ -374,23 +420,24 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple)
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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/*
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* HeapTupleSatisfiesDirty is used by unique btree-s and so
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* may be used while vacuuming.
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*/
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if (TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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return false;
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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if (!TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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}
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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if (!TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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{
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if (TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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return false;
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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else
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@ -416,10 +463,11 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple)
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{
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if (TransactionIdDidAbort(tuple->t_xmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID; /* aborted */
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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}
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SnapshotDirty->xmin = tuple->t_xmin;
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/* XXX shouldn't we fall through to look at xmax? */
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return true; /* in insertion by other */
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}
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else
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@ -474,6 +522,7 @@ HeapTupleSatisfiesSnapshot(HeapTupleHeader tuple, Snapshot snapshot)
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if (AMI_OVERRIDE)
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return true;
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/* XXX this is horribly ugly: */
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if (ReferentialIntegritySnapshotOverride)
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return HeapTupleSatisfiesNow(tuple);
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@ -484,18 +533,31 @@ HeapTupleSatisfiesSnapshot(HeapTupleHeader tuple, Snapshot snapshot)
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if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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if (TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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return false;
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if (!TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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{
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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}
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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}
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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if (!TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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if (!TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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if (TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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return false;
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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else
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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}
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}
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}
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else if (TransactionIdIsCurrentTransactionId(tuple->t_xmin))
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@ -519,10 +581,11 @@ HeapTupleSatisfiesSnapshot(HeapTupleHeader tuple, Snapshot snapshot)
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else if (!TransactionIdDidCommit(tuple->t_xmin))
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{
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if (TransactionIdDidAbort(tuple->t_xmin))
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tuple->t_infomask |= HEAP_XMIN_INVALID; /* aborted */
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return false;
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}
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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else
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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/*
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@ -623,24 +686,30 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin)
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return HEAPTUPLE_DEAD;
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else if (tuple->t_infomask & HEAP_MOVED_OFF)
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{
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if (TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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return HEAPTUPLE_DELETE_IN_PROGRESS;
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if (TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
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return HEAPTUPLE_DELETE_IN_PROGRESS;
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if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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{
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tuple->t_infomask |= HEAP_XMIN_INVALID;
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return HEAPTUPLE_DEAD;
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}
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/* Assume we can only get here if previous VACUUM aborted, */
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/* ie, it couldn't still be in progress */
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tuple->t_infomask |= HEAP_XMIN_COMMITTED;
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}
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else if (tuple->t_infomask & HEAP_MOVED_IN)
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{
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if (!TransactionIdDidCommit((TransactionId) tuple->t_cmin))
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if (TransactionIdIsCurrentTransactionId((TransactionId) tuple->t_cmin))
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return HEAPTUPLE_INSERT_IN_PROGRESS;
|
||||
if (TransactionIdIsInProgress((TransactionId) tuple->t_cmin))
|
||||
return HEAPTUPLE_INSERT_IN_PROGRESS;
|
||||
if (TransactionIdDidCommit((TransactionId) tuple->t_cmin))
|
||||
tuple->t_infomask |= HEAP_XMIN_COMMITTED;
|
||||
else
|
||||
{
|
||||
/* Assume we can only get here if previous VACUUM aborted */
|
||||
tuple->t_infomask |= HEAP_XMIN_INVALID;
|
||||
return HEAPTUPLE_DEAD;
|
||||
}
|
||||
tuple->t_infomask |= HEAP_XMIN_COMMITTED;
|
||||
}
|
||||
else if (TransactionIdIsInProgress(tuple->t_xmin))
|
||||
return HEAPTUPLE_INSERT_IN_PROGRESS;
|
||||
|
|
@ -671,6 +740,12 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin)
|
|||
if (tuple->t_infomask & HEAP_XMAX_INVALID)
|
||||
return HEAPTUPLE_LIVE;
|
||||
|
||||
if (tuple->t_infomask & HEAP_MARKED_FOR_UPDATE)
|
||||
{
|
||||
/* "deleting" xact really only marked it for update */
|
||||
return HEAPTUPLE_LIVE;
|
||||
}
|
||||
|
||||
if (!(tuple->t_infomask & HEAP_XMAX_COMMITTED))
|
||||
{
|
||||
if (TransactionIdIsInProgress(tuple->t_xmax))
|
||||
|
|
@ -699,12 +774,6 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin)
|
|||
* Deleter committed, but check special cases.
|
||||
*/
|
||||
|
||||
if (tuple->t_infomask & HEAP_MARKED_FOR_UPDATE)
|
||||
{
|
||||
/* "deleting" xact really only marked it for update */
|
||||
return HEAPTUPLE_LIVE;
|
||||
}
|
||||
|
||||
if (TransactionIdEquals(tuple->t_xmin, tuple->t_xmax))
|
||||
{
|
||||
/*
|
||||
|
|
|
|||
Loading…
Reference in New Issue