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Postgres FD Implementation
Commit 67f99d21 authored by Tom Lane's avatar Tom Lane
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Fix oversight in async-commit patch: there were some places in heapam.c 

that still thought they could set HEAP_XMAX_COMMITTED immediately after
seeing the other transaction commit.  Make them use the same logic as
tqual.c does to determine if the hint bit can be set yet.
parent 6ccc262d
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Showing with 197 additions and 172 deletions
src/backend/access/heap/heapam.c
View file @ 67f99d21
......@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/heap/heapam.c,v 1.236 2007/06/09 18:49:54 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/heap/heapam.c,v 1.237 2007/08/14 17:35:18 tgl Exp $
*
*
* INTERFACE ROUTINES
......@@ -1509,6 +1509,34 @@ heap_get_latest_tid(Relation relation,
} /* end of loop */
}
/*
* UpdateXmaxHintBits - update tuple hint bits after xmax transaction ends
*
* This is called after we have waited for the XMAX transaction to terminate.
* If the transaction aborted, we guarantee the XMAX_INVALID hint bit will
* be set on exit. If the transaction committed, we set the XMAX_COMMITTED
* hint bit if possible --- but beware that that may not yet be possible,
* if the transaction committed asynchronously. Hence callers should look
* only at XMAX_INVALID.
*/
static void
UpdateXmaxHintBits(HeapTupleHeader tuple, Buffer buffer, TransactionId xid)
{
Assert(TransactionIdEquals(HeapTupleHeaderGetXmax(tuple), xid));
if (!(tuple->t_infomask & (HEAP_XMAX_COMMITTED | HEAP_XMAX_INVALID)))
{
if (TransactionIdDidCommit(xid))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
xid);
else
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
}
}
/*
* heap_insert - insert tuple into a heap
*
......@@ -1840,16 +1868,8 @@ l1:
xwait))
goto l1;
/* Otherwise we can mark it committed or aborted */
if (!(tp.t_data->t_infomask & (HEAP_XMAX_COMMITTED |
HEAP_XMAX_INVALID)))
{
if (TransactionIdDidCommit(xwait))
tp.t_data->t_infomask |= HEAP_XMAX_COMMITTED;
else
tp.t_data->t_infomask |= HEAP_XMAX_INVALID;
SetBufferCommitInfoNeedsSave(buffer);
}
/* Otherwise check if it committed or aborted */
UpdateXmaxHintBits(tp.t_data, buffer, xwait);
}
/*
......@@ -2164,16 +2184,8 @@ l2:
xwait))
goto l2;
/* Otherwise we can mark it committed or aborted */
if (!(oldtup.t_data->t_infomask & (HEAP_XMAX_COMMITTED |
HEAP_XMAX_INVALID)))
{
if (TransactionIdDidCommit(xwait))
oldtup.t_data->t_infomask |= HEAP_XMAX_COMMITTED;
else
oldtup.t_data->t_infomask |= HEAP_XMAX_INVALID;
SetBufferCommitInfoNeedsSave(buffer);
}
/* Otherwise check if it committed or aborted */
UpdateXmaxHintBits(oldtup.t_data, buffer, xwait);
}
/*
......@@ -2713,16 +2725,8 @@ l3:
xwait))
goto l3;
/* Otherwise we can mark it committed or aborted */
if (!(tuple->t_data->t_infomask & (HEAP_XMAX_COMMITTED |
HEAP_XMAX_INVALID)))
{
if (TransactionIdDidCommit(xwait))
tuple->t_data->t_infomask |= HEAP_XMAX_COMMITTED;
else
tuple->t_data->t_infomask |= HEAP_XMAX_INVALID;
SetBufferCommitInfoNeedsSave(*buffer);
}
/* Otherwise check if it committed or aborted */
UpdateXmaxHintBits(tuple->t_data, *buffer, xwait);
}
/*
......
src/backend/utils/time/tqual.c
View file @ 67f99d21
......@@ -5,10 +5,10 @@
*
* NOTE: all the HeapTupleSatisfies routines will update the tuple's
* "hint" status bits if we see that the inserting or deleting transaction
* has now committed or aborted. If the hint bits are changed,
* SetBufferCommitInfoNeedsSave is called on the passed-in buffer.
* The caller must hold at least a shared buffer context lock on the buffer
* containing the tuple.
* has now committed or aborted (and it is safe to set the hint bits).
* If the hint bits are changed, SetBufferCommitInfoNeedsSave is called on
* the passed-in buffer. The caller must hold not only a pin, but at least
* shared buffer content lock on the buffer containing the tuple.
*
* NOTE: must check TransactionIdIsInProgress (which looks in PGPROC array)
* before TransactionIdDidCommit/TransactionIdDidAbort (which look in
......@@ -31,7 +31,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/time/tqual.c,v 1.103 2007/08/01 22:45:09 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/time/tqual.c,v 1.104 2007/08/14 17:35:18 tgl Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -81,18 +81,23 @@ static bool XidInMVCCSnapshot(TransactionId xid, Snapshot snapshot);
/*
* HeapTupleSetHintBits()
* SetHintBits()
*
* Set commit/abort hint bits on a tuple, if appropriate at this time.
*
* We cannot change the LSN of the page here because we may hold only a share
* lock on the buffer, so it is only safe to set a transaction-committed hint
* bit if we know the transaction's commit record has been flushed to disk.
* It is only safe to set a transaction-committed hint bit if we know the
* transaction's commit record has been flushed to disk. We cannot change
* the LSN of the page here because we may hold only a share lock on the
* buffer, so we can't use the LSN to interlock this; we have to just refrain
* from setting the hint bit until some future re-examination of the tuple.
*
* We can always set hint bits when marking a transaction aborted. Also,
* if we are cleaning up HEAP_MOVED_IN or HEAP_MOVED_OFF entries, then
* We can always set hint bits when marking a transaction aborted. (Some
* code in heapam.c relies on that!)
*
* Also, if we are cleaning up HEAP_MOVED_IN or HEAP_MOVED_OFF entries, then
* we can always set the hint bits, since VACUUM FULL always uses synchronous
* commits.
* commits and doesn't move tuples that weren't previously hinted. (This is
* not known by this subroutine, but is applied by its callers.)
*
* Normal commits may be asynchronous, so for those we need to get the LSN
* of the transaction and then check whether this is flushed.
......@@ -101,7 +106,7 @@ static bool XidInMVCCSnapshot(TransactionId xid, Snapshot snapshot);
* InvalidTransactionId if no check is needed.
*/
static inline void
HeapTupleSetHintBits(HeapTupleHeader tuple, Buffer buffer,
SetHintBits(HeapTupleHeader tuple, Buffer buffer,
uint16 infomask, TransactionId xid)
{
if (TransactionIdIsValid(xid))
......@@ -117,6 +122,19 @@ HeapTupleSetHintBits(HeapTupleHeader tuple, Buffer buffer,
SetBufferCommitInfoNeedsSave(buffer);
}
/*
* HeapTupleSetHintBits --- exported version of SetHintBits()
*
* This must be separate because of C99's brain-dead notions about how to
* implement inline functions.
*/
void
HeapTupleSetHintBits(HeapTupleHeader tuple, Buffer buffer,
uint16 infomask, TransactionId xid)
{
SetHintBits(tuple, buffer, infomask, xid);
}
/*
* HeapTupleSatisfiesSelf
......@@ -160,11 +178,11 @@ HeapTupleSatisfiesSelf(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
{
if (TransactionIdDidCommit(xvac))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
}
}
......@@ -177,11 +195,11 @@ HeapTupleSatisfiesSelf(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
if (TransactionIdIsInProgress(xvac))
return false;
if (TransactionIdDidCommit(xvac))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
else
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
......@@ -200,7 +218,7 @@ HeapTupleSatisfiesSelf(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
/* deleting subtransaction aborted? */
if (TransactionIdDidAbort(HeapTupleHeaderGetXmax(tuple)))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
......@@ -212,12 +230,12 @@ HeapTupleSatisfiesSelf(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
else if (TransactionIdIsInProgress(HeapTupleHeaderGetXmin(tuple)))
return false;
else if (TransactionIdDidCommit(HeapTupleHeaderGetXmin(tuple)))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
HeapTupleHeaderGetXmin(tuple));
else
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
......@@ -255,7 +273,7 @@ HeapTupleSatisfiesSelf(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
if (!TransactionIdDidCommit(HeapTupleHeaderGetXmax(tuple)))
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
......@@ -264,12 +282,12 @@ HeapTupleSatisfiesSelf(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
if (tuple->t_infomask & HEAP_IS_LOCKED)
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
HeapTupleHeaderGetXmax(tuple));
return false;
}
......@@ -333,11 +351,11 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
{
if (TransactionIdDidCommit(xvac))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
}
}
......@@ -350,11 +368,11 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
if (TransactionIdIsInProgress(xvac))
return false;
if (TransactionIdDidCommit(xvac))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
else
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
......@@ -376,7 +394,7 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
/* deleting subtransaction aborted? */
if (TransactionIdDidAbort(HeapTupleHeaderGetXmax(tuple)))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
......@@ -391,12 +409,12 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
else if (TransactionIdIsInProgress(HeapTupleHeaderGetXmin(tuple)))
return false;
else if (TransactionIdDidCommit(HeapTupleHeaderGetXmin(tuple)))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
HeapTupleHeaderGetXmin(tuple));
else
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
......@@ -437,7 +455,7 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
if (!TransactionIdDidCommit(HeapTupleHeaderGetXmax(tuple)))
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
......@@ -446,12 +464,12 @@ HeapTupleSatisfiesNow(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
if (tuple->t_infomask & HEAP_IS_LOCKED)
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
HeapTupleHeaderGetXmax(tuple));
return false;
}
......@@ -499,11 +517,11 @@ HeapTupleSatisfiesToast(HeapTupleHeader tuple, Snapshot snapshot,
{
if (TransactionIdDidCommit(xvac))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
}
}
......@@ -516,11 +534,11 @@ HeapTupleSatisfiesToast(HeapTupleHeader tuple, Snapshot snapshot,
if (TransactionIdIsInProgress(xvac))
return false;
if (TransactionIdDidCommit(xvac))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
else
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
......@@ -578,11 +596,11 @@ HeapTupleSatisfiesUpdate(HeapTupleHeader tuple, CommandId curcid,
{
if (TransactionIdDidCommit(xvac))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return HeapTupleInvisible;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
}
}
......@@ -595,11 +613,11 @@ HeapTupleSatisfiesUpdate(HeapTupleHeader tuple, CommandId curcid,
if (TransactionIdIsInProgress(xvac))
return HeapTupleInvisible;
if (TransactionIdDidCommit(xvac))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
else
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return HeapTupleInvisible;
}
......@@ -621,7 +639,7 @@ HeapTupleSatisfiesUpdate(HeapTupleHeader tuple, CommandId curcid,
/* deleting subtransaction aborted? */
if (TransactionIdDidAbort(HeapTupleHeaderGetXmax(tuple)))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return HeapTupleMayBeUpdated;
}
......@@ -636,12 +654,12 @@ HeapTupleSatisfiesUpdate(HeapTupleHeader tuple, CommandId curcid,
else if (TransactionIdIsInProgress(HeapTupleHeaderGetXmin(tuple)))
return HeapTupleInvisible;
else if (TransactionIdDidCommit(HeapTupleHeaderGetXmin(tuple)))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
HeapTupleHeaderGetXmin(tuple));
else
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return HeapTupleInvisible;
}
......@@ -666,7 +684,7 @@ HeapTupleSatisfiesUpdate(HeapTupleHeader tuple, CommandId curcid,
if (MultiXactIdIsRunning(HeapTupleHeaderGetXmax(tuple)))
return HeapTupleBeingUpdated;
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return HeapTupleMayBeUpdated;
}
......@@ -687,7 +705,7 @@ HeapTupleSatisfiesUpdate(HeapTupleHeader tuple, CommandId curcid,
if (!TransactionIdDidCommit(HeapTupleHeaderGetXmax(tuple)))
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return HeapTupleMayBeUpdated;
}
......@@ -696,12 +714,12 @@ HeapTupleSatisfiesUpdate(HeapTupleHeader tuple, CommandId curcid,
if (tuple->t_infomask & HEAP_IS_LOCKED)
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return HeapTupleMayBeUpdated;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
HeapTupleHeaderGetXmax(tuple));
return HeapTupleUpdated; /* updated by other */
}
......@@ -747,11 +765,11 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple, Snapshot snapshot,
{
if (TransactionIdDidCommit(xvac))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
}
}
......@@ -764,11 +782,11 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple, Snapshot snapshot,
if (TransactionIdIsInProgress(xvac))
return false;
if (TransactionIdDidCommit(xvac))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
else
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
......@@ -787,7 +805,7 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple, Snapshot snapshot,
/* deleting subtransaction aborted? */
if (TransactionIdDidAbort(HeapTupleHeaderGetXmax(tuple)))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
......@@ -803,12 +821,12 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple, Snapshot snapshot,
return true; /* in insertion by other */
}
else if (TransactionIdDidCommit(HeapTupleHeaderGetXmin(tuple)))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
HeapTupleHeaderGetXmin(tuple));
else
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
......@@ -849,7 +867,7 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple, Snapshot snapshot,
if (!TransactionIdDidCommit(HeapTupleHeaderGetXmax(tuple)))
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
......@@ -858,12 +876,12 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple, Snapshot snapshot,
if (tuple->t_infomask & HEAP_IS_LOCKED)
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
HeapTupleHeaderGetXmax(tuple));
return false; /* updated by other */
}
......@@ -908,11 +926,11 @@ HeapTupleSatisfiesMVCC(HeapTupleHeader tuple, Snapshot snapshot,
{
if (TransactionIdDidCommit(xvac))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
}
}
......@@ -925,11 +943,11 @@ HeapTupleSatisfiesMVCC(HeapTupleHeader tuple, Snapshot snapshot,
if (TransactionIdIsInProgress(xvac))
return false;
if (TransactionIdDidCommit(xvac))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
else
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
......@@ -952,7 +970,7 @@ HeapTupleSatisfiesMVCC(HeapTupleHeader tuple, Snapshot snapshot,
/* FIXME -- is this correct w.r.t. the cmax of the tuple? */
if (TransactionIdDidAbort(HeapTupleHeaderGetXmax(tuple)))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
......@@ -967,12 +985,12 @@ HeapTupleSatisfiesMVCC(HeapTupleHeader tuple, Snapshot snapshot,
else if (TransactionIdIsInProgress(HeapTupleHeaderGetXmin(tuple)))
return false;
else if (TransactionIdDidCommit(HeapTupleHeaderGetXmin(tuple)))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
HeapTupleHeaderGetXmin(tuple));
else
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return false;
}
......@@ -1014,13 +1032,13 @@ HeapTupleSatisfiesMVCC(HeapTupleHeader tuple, Snapshot snapshot,
if (!TransactionIdDidCommit(HeapTupleHeaderGetXmax(tuple)))
{
/* it must have aborted or crashed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return true;
}
/* xmax transaction committed */
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
HeapTupleHeaderGetXmax(tuple));
}
......@@ -1070,11 +1088,11 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin,
return HEAPTUPLE_DELETE_IN_PROGRESS;
if (TransactionIdDidCommit(xvac))
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return HEAPTUPLE_DEAD;
}
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
}
else if (tuple->t_infomask & HEAP_MOVED_IN)
......@@ -1086,11 +1104,11 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin,
if (TransactionIdIsInProgress(xvac))
return HEAPTUPLE_INSERT_IN_PROGRESS;
if (TransactionIdDidCommit(xvac))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
InvalidTransactionId);
else
{
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return HEAPTUPLE_DEAD;
}
......@@ -1105,14 +1123,14 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin,
return HEAPTUPLE_DELETE_IN_PROGRESS;
}
else if (TransactionIdDidCommit(HeapTupleHeaderGetXmin(tuple)))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMIN_COMMITTED,
HeapTupleHeaderGetXmin(tuple));
else
{
/*
* Not in Progress, Not Committed, so either Aborted or crashed
*/
HeapTupleSetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
SetHintBits(tuple, buffer, HEAP_XMIN_INVALID,
InvalidTransactionId);
return HEAPTUPLE_DEAD;
}
......@@ -1158,7 +1176,7 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin,
* We know that xmax did lock the tuple, but it did not and will
* never actually update it.
*/
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
}
return HEAPTUPLE_LIVE;
......@@ -1176,14 +1194,14 @@ HeapTupleSatisfiesVacuum(HeapTupleHeader tuple, TransactionId OldestXmin,
if (TransactionIdIsInProgress(HeapTupleHeaderGetXmax(tuple)))
return HEAPTUPLE_DELETE_IN_PROGRESS;
else if (TransactionIdDidCommit(HeapTupleHeaderGetXmax(tuple)))
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
SetHintBits(tuple, buffer, HEAP_XMAX_COMMITTED,
HeapTupleHeaderGetXmax(tuple));
else
{
/*
* Not in Progress, Not Committed, so either Aborted or crashed
*/
HeapTupleSetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
SetHintBits(tuple, buffer, HEAP_XMAX_INVALID,
InvalidTransactionId);
return HEAPTUPLE_LIVE;
}
......
src/include/utils/tqual.h
View file @ 67f99d21
......@@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/tqual.h,v 1.67 2007/07/25 12:22:54 mha Exp $
* $PostgreSQL: pgsql/src/include/utils/tqual.h,v 1.68 2007/08/14 17:35:18 tgl Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -145,6 +145,9 @@ extern HTSU_Result HeapTupleSatisfiesUpdate(HeapTupleHeader tuple,
extern HTSV_Result HeapTupleSatisfiesVacuum(HeapTupleHeader tuple,
TransactionId OldestXmin, Buffer buffer);
extern void HeapTupleSetHintBits(HeapTupleHeader tuple, Buffer buffer,
uint16 infomask, TransactionId xid);
extern Snapshot GetTransactionSnapshot(void);
extern Snapshot GetLatestSnapshot(void);
extern Snapshot CopySnapshot(Snapshot snapshot);
......
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