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Move remaining code from tqual.[ch] to heapam.h / heapam_visibility.c.

author Andres Freund <andres@anarazel.de>

2019年1月22日 01:03:15 +0000 (17:03 -0800)

committer Andres Freund <andres@anarazel.de>

2019年1月22日 01:07:10 +0000 (17:07 -0800)

Given these routines are heap specific, and that there will be more
generic visibility support in via table AM, it makes sense to move the
prototypes to heapam.h (routines like HeapTupleSatisfiesVacuum will
not be exposed in a generic fashion, because they are too storage
specific).

Similarly, the code in tqual.c is specific to heap, so moving it into
access/heap/ makes sense.

Author: Andres Freund
Discussion: https://postgr.es/m/20180703070645.wchpu5muyto5n647@alap3.anarazel.de

32 files changed:

contrib/pg_visibility/pg_visibility.c patch | blob | blame | history

contrib/pgrowlocks/pgrowlocks.c patch | blob | blame | history

contrib/pgstattuple/pgstatapprox.c patch | blob | blame | history

contrib/pgstattuple/pgstattuple.c patch | blob | blame | history

src/backend/access/heap/Makefile patch | blob | blame | history

src/backend/access/heap/heapam.c patch | blob | blame | history

src/backend/access/heap/heapam_visibility.c [moved from src/backend/utils/time/tqual.c with 99% similarity] patch | blob | blame | history

src/backend/access/heap/pruneheap.c patch | blob | blame | history

src/backend/access/heap/rewriteheap.c patch | blob | blame | history

src/backend/access/heap/tuptoaster.c patch | blob | blame | history

src/backend/access/heap/vacuumlazy.c patch | blob | blame | history

src/backend/access/index/genam.c patch | blob | blame | history

src/backend/access/spgist/spgvacuum.c patch | blob | blame | history

src/backend/access/transam/transam.c patch | blob | blame | history

src/backend/access/transam/xact.c patch | blob | blame | history

src/backend/catalog/index.c patch | blob | blame | history

src/backend/commands/analyze.c patch | blob | blame | history

src/backend/commands/async.c patch | blob | blame | history

src/backend/commands/cluster.c patch | blob | blame | history

src/backend/executor/nodeBitmapHeapscan.c patch | blob | blame | history

src/backend/executor/nodeModifyTable.c patch | blob | blame | history

src/backend/executor/nodeSamplescan.c patch | blob | blame | history

src/backend/replication/logical/reorderbuffer.c patch | blob | blame | history

src/backend/replication/logical/snapbuild.c patch | blob | blame | history

src/backend/storage/ipc/procarray.c patch | blob | blame | history

src/backend/storage/lmgr/predicate.c patch | blob | blame | history

src/backend/utils/adt/ri_triggers.c patch | blob | blame | history

src/backend/utils/cache/inval.c patch | blob | blame | history

src/backend/utils/time/Makefile patch | blob | blame | history

src/include/access/heapam.h patch | blob | blame | history

src/include/utils/snapshot.h patch | blob | blame | history

src/include/utils/tqual.h [deleted file] patch | blob | blame | history

diff --git a/contrib/pg_visibility/pg_visibility.c b/contrib/pg_visibility/pg_visibility.c

index d8125f1ba2f51d64024435c65e36eaf2653d8a86..3282742b807b1014890398e6b3bf186f3beaf9f0 100644 (file)

--- a/contrib/pg_visibility/pg_visibility.c

+++ b/contrib/pg_visibility/pg_visibility.c

@@ -22,7 +22,6 @@

#include "storage/smgr.h"

#include "utils/rel.h"

#include "utils/snapmgr.h"

-#include "utils/tqual.h"

PG_MODULE_MAGIC;

diff --git a/contrib/pgrowlocks/pgrowlocks.c b/contrib/pgrowlocks/pgrowlocks.c

index 2cb3d1ca3bc8f4dd7052c73e787b1d985e787622..df2ad7f2c9d9725efd0805e8513f943c706abb3a 100644 (file)

--- a/contrib/pgrowlocks/pgrowlocks.c

+++ b/contrib/pgrowlocks/pgrowlocks.c

@@ -38,7 +38,6 @@

#include "utils/builtins.h"

#include "utils/rel.h"

#include "utils/snapmgr.h"

-#include "utils/tqual.h"

#include "utils/varlena.h"

PG_MODULE_MAGIC;

diff --git a/contrib/pgstattuple/pgstatapprox.c b/contrib/pgstattuple/pgstatapprox.c

index 4f449a26c153842904013db5b15f81612ef9c6aa..ff7c255a2de1fba9033ad8c88ac5cabc7f373c4d 100644 (file)

--- a/contrib/pgstattuple/pgstatapprox.c

+++ b/contrib/pgstattuple/pgstatapprox.c

@@ -12,6 +12,7 @@

#include "postgres.h"

+#include "access/heapam.h"

#include "access/relation.h"

#include "access/transam.h"

#include "access/visibilitymap.h"

@@ -26,7 +27,6 @@

#include "storage/procarray.h"

#include "storage/lmgr.h"

#include "utils/builtins.h"

-#include "utils/tqual.h"

#include "commands/vacuum.h"

PG_FUNCTION_INFO_V1(pgstattuple_approx);

diff --git a/contrib/pgstattuple/pgstattuple.c b/contrib/pgstattuple/pgstattuple.c

index 8f67c3c2209b5d98811ae222c360c1fb98351a80..2ac9863463bdf8116af9bee18255c607aa162e3f 100644 (file)

--- a/contrib/pgstattuple/pgstattuple.c

+++ b/contrib/pgstattuple/pgstattuple.c

@@ -36,7 +36,6 @@

#include "storage/bufmgr.h"

#include "storage/lmgr.h"

#include "utils/builtins.h"

-#include "utils/tqual.h"

#include "utils/varlena.h"

PG_MODULE_MAGIC;

diff --git a/src/backend/access/heap/Makefile b/src/backend/access/heap/Makefile

index 7e7324a9166f330f2d87c44f27d6890f86ad2cdb..eae36fdbf40c63c4dde3c638e16271d9a6e9d2a6 100644 (file)

--- a/src/backend/access/heap/Makefile

+++ b/src/backend/access/heap/Makefile

@@ -12,7 +12,7 @@ subdir = src/backend/access/heap

top_builddir = ../../../..

include $(top_builddir)/src/Makefile.global

-OBJS = heapam.o hio.o pruneheap.o rewriteheap.o syncscan.o tuptoaster.o \

- vacuumlazy.o visibilitymap.o

+OBJS = heapam.o heapam_visibility.o hio.o pruneheap.o rewriteheap.o \

+ syncscan.o tuptoaster.o vacuumlazy.o visibilitymap.o

include $(top_srcdir)/src/backend/common.mk

diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c

index dc2ff89d270846c861d763aabaf0166decfc8dd8..b9862247fb07af01823d29b07858cbffae0db935 100644 (file)

--- a/src/backend/access/heap/heapam.c

+++ b/src/backend/access/heap/heapam.c

@@ -66,7 +66,6 @@

#include "utils/lsyscache.h"

#include "utils/relcache.h"

#include "utils/snapmgr.h"

-#include "utils/tqual.h"

/* GUC variable */

@@ -5284,8 +5283,8 @@ test_lockmode_for_conflict(MultiXactStatus status, TransactionId xid,

* Note: we *must* check TransactionIdIsInProgress before

- * TransactionIdDidAbort/Commit; see comment at top of tqual.c for an

- * explanation.

+ * TransactionIdDidAbort/Commit; see comment at top of heapam_visibility.c

+ * for an explanation.

if (TransactionIdIsCurrentTransactionId(xid))

{

@@ -6254,7 +6253,8 @@ FreezeMultiXactId(MultiXactId multi, uint16 t_infomask,

* As with all tuple visibility routines, it's critical to test

* TransactionIdIsInProgress before TransactionIdDidCommit,

- * because of race conditions explained in detail in tqual.c.

+ * because of race conditions explained in detail in

+ * heapam_visibility.c.

if (TransactionIdIsCurrentTransactionId(xid) ||

TransactionIdIsInProgress(xid))

diff --git a/src/backend/utils/time/tqual.c b/src/backend/access/heap/heapam_visibility.c

similarity index 99%
rename from src/backend/utils/time/tqual.c
rename to src/backend/access/heap/heapam_visibility.c
index 71d7e257773592a8f4f1fd7af2c9002bfebd64d5..86a99943eb66cb101e944211d8dadc1bd2504411 100644 (file)

--- a/src/backend/utils/time/tqual.c

+++ b/src/backend/access/heap/heapam_visibility.c

@@ -1,7 +1,7 @@

/*-------------------------------------------------------------------------

- * tqual.c

- * POSTGRES "time qualification" code, ie, tuple visibility rules.

+ * heapam_visibility.c

+ * Tuple visibility rules for tuples stored in heap.

* NOTE: all the HeapTupleSatisfies routines will update the tuple's

* "hint" status bits if we see that the inserting or deleting transaction

@@ -56,13 +56,14 @@

* IDENTIFICATION

- * src/backend/utils/time/tqual.c

+ * src/backend/access/heap/heapam_visibility.c

*-------------------------------------------------------------------------

#include "postgres.h"

+#include "access/heapam.h"

#include "access/htup_details.h"

#include "access/multixact.h"

#include "access/subtrans.h"

@@ -74,7 +75,6 @@

#include "utils/builtins.h"

#include "utils/combocid.h"

#include "utils/snapmgr.h"

-#include "utils/tqual.h"

diff --git a/src/backend/access/heap/pruneheap.c b/src/backend/access/heap/pruneheap.c

index 2665f24730aeb9b868ad282c42c18b33debcc39b..a3e51922d85ef50493a2e5ffeeaecc4416a999bf 100644 (file)

--- a/src/backend/access/heap/pruneheap.c

+++ b/src/backend/access/heap/pruneheap.c

@@ -25,7 +25,6 @@

#include "storage/bufmgr.h"

#include "utils/snapmgr.h"

#include "utils/rel.h"

-#include "utils/tqual.h"

/* Working data for heap_page_prune and subroutines */

typedef struct

diff --git a/src/backend/access/heap/rewriteheap.c b/src/backend/access/heap/rewriteheap.c

index f6b0f1b093335b47026330938d65f233ab127bcb..f5cf9ffc9c751d4a99a39d410d5e1d956c3a7e46 100644 (file)

--- a/src/backend/access/heap/rewriteheap.c

+++ b/src/backend/access/heap/rewriteheap.c

@@ -130,7 +130,6 @@

#include "utils/memutils.h"

#include "utils/rel.h"

-#include "utils/tqual.h"

#include "storage/procarray.h"

diff --git a/src/backend/access/heap/tuptoaster.c b/src/backend/access/heap/tuptoaster.c

index 6763fb920c2c0f326009ad255afc663b479ba00a..cd921a46005c411e401e3742d4d01e8749b2ed23 100644 (file)

--- a/src/backend/access/heap/tuptoaster.c

+++ b/src/backend/access/heap/tuptoaster.c

@@ -42,7 +42,6 @@

#include "utils/rel.h"

#include "utils/snapmgr.h"

#include "utils/typcache.h"

-#include "utils/tqual.h"

#undef TOAST_DEBUG

diff --git a/src/backend/access/heap/vacuumlazy.c b/src/backend/access/heap/vacuumlazy.c

index c09eb6eff885d9ad87ec2b41a6832f4516f1ea42..37aa484ec3a971f475de26ed843467a6390d2290 100644 (file)

--- a/src/backend/access/heap/vacuumlazy.c

+++ b/src/backend/access/heap/vacuumlazy.c

@@ -59,7 +59,6 @@

#include "utils/memutils.h"

#include "utils/pg_rusage.h"

#include "utils/timestamp.h"

-#include "utils/tqual.h"

diff --git a/src/backend/access/index/genam.c b/src/backend/access/index/genam.c

index ffd79ffca7d13dd24a05cb76b0069a7599846f0c..e0a5ea42d525d2538ddea6cf8589de050a39ca4b 100644 (file)

--- a/src/backend/access/index/genam.c

+++ b/src/backend/access/index/genam.c

@@ -35,7 +35,6 @@

#include "utils/ruleutils.h"

#include "utils/snapmgr.h"

#include "utils/syscache.h"

-#include "utils/tqual.h"

/* ----------------------------------------------------------------

diff --git a/src/backend/access/spgist/spgvacuum.c b/src/backend/access/spgist/spgvacuum.c

index ccb5ac402c83eb11882dfdeab1a32a59b2c1425f..b9311ce5950349c749b30781de96508664a3ea97 100644 (file)

--- a/src/backend/access/spgist/spgvacuum.c

+++ b/src/backend/access/spgist/spgvacuum.c

@@ -192,7 +192,7 @@ vacuumLeafPage(spgBulkDeleteState *bds, Relation index, Buffer buffer,

* happened since VACUUM started.

* Note: we could make a tighter test by seeing if the xid is

- * "running" according to the active snapshot; but tqual.c doesn't

+ * "running" according to the active snapshot; but snapmgr.c doesn't

* currently export a suitable API, and it's not entirely clear

* that a tighter test is worth the cycles anyway.

diff --git a/src/backend/access/transam/transam.c b/src/backend/access/transam/transam.c

index e55611ae09d511917391153244d384e2715cde10..365ddfb428fc6b2f62b1ac130769070f1f00ead3 100644 (file)

--- a/src/backend/access/transam/transam.c

+++ b/src/backend/access/transam/transam.c

@@ -228,8 +228,8 @@ TransactionIdDidAbort(TransactionId transactionId)

* (and so it's not named TransactionIdDidComplete, which would be the

* appropriate name for a function that worked that way). The intended

* use is just to short-circuit TransactionIdIsInProgress calls when doing

- * repeated tqual.c checks for the same XID. If this isn't extremely fast

- * then it will be counterproductive.

+ * repeated heapam_visibility.c checks for the same XID. If this isn't

+ * extremely fast then it will be counterproductive.

* Note:

* Assumes transaction identifier is valid.

diff --git a/src/backend/access/transam/xact.c b/src/backend/access/transam/xact.c

index 18467d96d28003efb880d4a06a931f9e03c7019f..7c3a9c1e899a6a978b795efee710315cee7ed9ca 100644 (file)

--- a/src/backend/access/transam/xact.c

+++ b/src/backend/access/transam/xact.c

@@ -774,10 +774,10 @@ TransactionIdIsCurrentTransactionId(TransactionId xid)

* We always say that BootstrapTransactionId is "not my transaction ID"

* even when it is (ie, during bootstrap). Along with the fact that

* transam.c always treats BootstrapTransactionId as already committed,

- * this causes the tqual.c routines to see all tuples as committed, which

- * is what we need during bootstrap. (Bootstrap mode only inserts tuples,

- * it never updates or deletes them, so all tuples can be presumed good

- * immediately.)

+ * this causes the heapam_visibility.c routines to see all tuples as

+ * committed, which is what we need during bootstrap. (Bootstrap mode

+ * only inserts tuples, it never updates or deletes them, so all tuples

+ * can be presumed good immediately.)

* Likewise, InvalidTransactionId and FrozenTransactionId are certainly

* not my transaction ID, so we can just return "false" immediately for

diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c

index b6d472335fe8a568521c69cb5e9fa5dcf39f7d0e..7359600fd36303c709804ea797d9f221519dfcb9 100644 (file)

--- a/src/backend/catalog/index.c

+++ b/src/backend/catalog/index.c

@@ -75,7 +75,6 @@

#include "utils/syscache.h"

#include "utils/tuplesort.h"

#include "utils/snapmgr.h"

-#include "utils/tqual.h"

/* Potentially set by pg_upgrade_support functions */

diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c

index 83625d10e7556be87b0bf05712e3089a0c68dd4b..c8192353ebe2643858ef9123a82c07c598523fc6 100644 (file)

--- a/src/backend/commands/analyze.c

+++ b/src/backend/commands/analyze.c

@@ -17,6 +17,7 @@

#include <math.h>

#include "access/genam.h"

+#include "access/heapam.h"

#include "access/multixact.h"

#include "access/relation.h"

#include "access/sysattr.h"

@@ -63,7 +64,6 @@

#include "utils/sortsupport.h"

#include "utils/syscache.h"

#include "utils/timestamp.h"

-#include "utils/tqual.h"

/* Per-index data for ANALYZE */

diff --git a/src/backend/commands/async.c b/src/backend/commands/async.c

index 0099b8813780cfeee218d02f5cff61a754f78452..5a7ee0de4cfb51c440a121d467f6cf13262df117 100644 (file)

--- a/src/backend/commands/async.c

+++ b/src/backend/commands/async.c

@@ -1955,7 +1955,7 @@ asyncQueueProcessPageEntries(volatile QueuePosition *current,

* Note that we must test XidInMVCCSnapshot before we test

* TransactionIdDidCommit, else we might return a message from

* a transaction that is not yet visible to snapshots; compare

- * the comments at the head of tqual.c.

+ * the comments at the head of heapam_visibility.c.

* Also, while our own xact won't be listed in the snapshot,

* we need not check for TransactionIdIsCurrentTransactionId

diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c

index 99e25cd50fb945fa21c3a016c804daacfd1f546c..5c0f238c7e264f1852b122a8aa7ade99908846b0 100644 (file)

--- a/src/backend/commands/cluster.c

+++ b/src/backend/commands/cluster.c

@@ -52,7 +52,6 @@

#include "utils/relmapper.h"

#include "utils/snapmgr.h"

#include "utils/syscache.h"

-#include "utils/tqual.h"

#include "utils/tuplesort.h"

diff --git a/src/backend/executor/nodeBitmapHeapscan.c b/src/backend/executor/nodeBitmapHeapscan.c

index cd20abc141e5f7a32214969d9a085a153e49e592..5e74585d5e4d99a8a2737d796e072d404c55be59 100644 (file)

--- a/src/backend/executor/nodeBitmapHeapscan.c

+++ b/src/backend/executor/nodeBitmapHeapscan.c

@@ -51,7 +51,6 @@

#include "utils/rel.h"

#include "utils/spccache.h"

#include "utils/snapmgr.h"

-#include "utils/tqual.h"

static TupleTableSlot *BitmapHeapNext(BitmapHeapScanState *node);

diff --git a/src/backend/executor/nodeModifyTable.c b/src/backend/executor/nodeModifyTable.c

index 241711a81d773f2941e856519b14d71137bdec75..566858c19b35f2e6d0a82cf70df8d1512659770c 100644 (file)

--- a/src/backend/executor/nodeModifyTable.c

+++ b/src/backend/executor/nodeModifyTable.c

@@ -53,7 +53,6 @@

#include "utils/builtins.h"

#include "utils/memutils.h"

#include "utils/rel.h"

-#include "utils/tqual.h"

static bool ExecOnConflictUpdate(ModifyTableState *mtstate,

diff --git a/src/backend/executor/nodeSamplescan.c b/src/backend/executor/nodeSamplescan.c

index 7d4f17b4e99201f177d3d27dd8342cec072b1630..da4a65fd30ad99b65027ece482844f62f8b0ec91 100644 (file)

--- a/src/backend/executor/nodeSamplescan.c

+++ b/src/backend/executor/nodeSamplescan.c

@@ -25,7 +25,6 @@

#include "storage/predicate.h"

#include "utils/builtins.h"

#include "utils/rel.h"

-#include "utils/tqual.h"

static TupleTableSlot *SampleNext(SampleScanState *node);

static void tablesample_init(SampleScanState *scanstate);

diff --git a/src/backend/replication/logical/reorderbuffer.c b/src/backend/replication/logical/reorderbuffer.c

index b79ce5db958d0385bd26feb58c4f091908217b69..a49e226967c8ee824c80e44bd9007e56cfa0701f 100644 (file)

--- a/src/backend/replication/logical/reorderbuffer.c

+++ b/src/backend/replication/logical/reorderbuffer.c

@@ -56,6 +56,7 @@

#include <unistd.h>

#include <sys/stat.h>

+#include "access/heapam.h"

#include "access/rewriteheap.h"

#include "access/transam.h"

#include "access/tuptoaster.h"

@@ -78,7 +79,6 @@

#include "utils/memutils.h"

#include "utils/rel.h"

#include "utils/relfilenodemap.h"

-#include "utils/tqual.h"

/* entry for a hash table we use to map from xid to our transaction state */

@@ -1269,7 +1269,7 @@ ReorderBufferCleanupTXN(ReorderBuffer *rb, ReorderBufferTXN *txn)

* Build a hash with a (relfilenode, ctid) -> (cmin, cmax) mapping for use by

- * tqual.c's HeapTupleSatisfiesHistoricMVCC.

+ * HeapTupleSatisfiesHistoricMVCC.

static void

ReorderBufferBuildTupleCidHash(ReorderBuffer *rb, ReorderBufferTXN *txn)

diff --git a/src/backend/replication/logical/snapbuild.c b/src/backend/replication/logical/snapbuild.c

index 2310e9fafe0a083bfd4a8d4edba63758457db7e7..2f185f782395b125c90db2fd5cf292dbe4f69829 100644 (file)

--- a/src/backend/replication/logical/snapbuild.c

+++ b/src/backend/replication/logical/snapbuild.c

@@ -1119,7 +1119,7 @@ SnapBuildProcessRunningXacts(SnapBuild *builder, XLogRecPtr lsn, xl_running_xact

* NB: We only increase xmax when a catalog modifying transaction commits

* (see SnapBuildCommitTxn). Because of this, xmax can be lower than

* xmin, which looks odd but is correct and actually more efficient, since

- * we hit fast paths in tqual.c.

+ * we hit fast paths in heapam_visibility.c.

builder->xmin = running->oldestRunningXid;

diff --git a/src/backend/storage/ipc/procarray.c b/src/backend/storage/ipc/procarray.c

index 43110e57b681807127e8f28f72646f0212cccdc2..cf93357997c448215bfbc3afb3ff6659ce294120 100644 (file)

--- a/src/backend/storage/ipc/procarray.c

+++ b/src/backend/storage/ipc/procarray.c

@@ -1498,7 +1498,7 @@ GetMaxSnapshotSubxidCount(void)

* information may not be available. If we find any overflowed subxid arrays,

* we have to mark the snapshot's subxid data as overflowed, and extra work

* *may* need to be done to determine what's running (see XidInMVCCSnapshot()

- * in tqual.c).

+ * in heapam_visibility.c).

* We also update the following backend-global variables:

* TransactionXmin: the oldest xmin of any snapshot in use in the

diff --git a/src/backend/storage/lmgr/predicate.c b/src/backend/storage/lmgr/predicate.c

index a962034753b70f0c76b98096a4b3c91ecb25a6c1..6fc11f26f0eb3daf81fc98da540c815c9d9ca3ac 100644 (file)

--- a/src/backend/storage/lmgr/predicate.c

+++ b/src/backend/storage/lmgr/predicate.c

@@ -185,6 +185,7 @@

#include "postgres.h"

+#include "access/heapam.h"

#include "access/htup_details.h"

#include "access/slru.h"

#include "access/subtrans.h"

@@ -202,7 +203,6 @@

#include "storage/procarray.h"

#include "utils/rel.h"

#include "utils/snapmgr.h"

-#include "utils/tqual.h"

/* Uncomment the next line to test the graceful degradation code. */

/* #define TEST_OLDSERXID */

diff --git a/src/backend/utils/adt/ri_triggers.c b/src/backend/utils/adt/ri_triggers.c

index 93399f811a5bbe8380c6efa76d58ad6140541272..e1aa3d0044f17461c3086a3c0d9724252665ef05 100644 (file)

--- a/src/backend/utils/adt/ri_triggers.c

+++ b/src/backend/utils/adt/ri_triggers.c

@@ -30,6 +30,7 @@

#include "postgres.h"

+#include "access/heapam.h"

#include "access/htup_details.h"

#include "access/sysattr.h"

#include "access/table.h"

@@ -57,7 +58,6 @@

#include "utils/rls.h"

#include "utils/snapmgr.h"

#include "utils/syscache.h"

-#include "utils/tqual.h"

/* ----------

diff --git a/src/backend/utils/cache/inval.c b/src/backend/utils/cache/inval.c

index b9f698ef2cec5d00f5d3344555fc110138b2064e..16903c25f45fce14f5e3951c2ecdf40f5b6eaee7 100644 (file)

--- a/src/backend/utils/cache/inval.c

+++ b/src/backend/utils/cache/inval.c

@@ -8,9 +8,9 @@

* When a tuple is updated or deleted, our standard time qualification rules

* consider that it is *still valid* so long as we are in the same command,

* ie, until the next CommandCounterIncrement() or transaction commit.

- * (See utils/time/tqual.c, and note that system catalogs are generally

- * scanned under the most current snapshot available, rather than the

- * transaction snapshot.) At the command boundary, the old tuple stops

+ * (See acces/heap/heapam_visibility.c, and note that system catalogs are

+ * generally scanned under the most current snapshot available, rather than

+ * the transaction snapshot.) At the command boundary, the old tuple stops

* being valid and the new version, if any, becomes valid. Therefore,

* we cannot simply flush a tuple from the system caches during heap_update()

* or heap_delete(). The tuple is still good at that point; what's more,

diff --git a/src/backend/utils/time/Makefile b/src/backend/utils/time/Makefile

index 5a6e6fa4c8e2186f2a5591997839d138707bd062..f17b1c5324968cbb5f58082048f51b32c3397669 100644 (file)

--- a/src/backend/utils/time/Makefile

+++ b/src/backend/utils/time/Makefile

@@ -12,6 +12,6 @@ subdir = src/backend/utils/time

top_builddir = ../../../..

include $(top_builddir)/src/Makefile.global

-OBJS = combocid.o tqual.o snapmgr.o

+OBJS = combocid.o snapmgr.o

include $(top_srcdir)/src/backend/common.mk

diff --git a/src/include/access/heapam.h b/src/include/access/heapam.h

index 6a2489ede3cb8836b09223038da4a55a17ae9245..ab0879138f0de67b30c0cc130083cfbdfc5e576f 100644 (file)

--- a/src/include/access/heapam.h

+++ b/src/include/access/heapam.h

@@ -60,6 +60,15 @@ typedef struct HeapUpdateFailureData

CommandId cmax;

} HeapUpdateFailureData;

+/* Result codes for HeapTupleSatisfiesVacuum */

+typedef enum

+ HEAPTUPLE_DEAD, /* tuple is dead and deletable */

+ HEAPTUPLE_LIVE, /* tuple is live (committed, no deleter) */

+ HEAPTUPLE_RECENTLY_DEAD, /* tuple is dead, but not deletable yet */

+ HEAPTUPLE_INSERT_IN_PROGRESS, /* inserting xact is still in progress */

+ HEAPTUPLE_DELETE_IN_PROGRESS /* deleting xact is still in progress */

+} HTSV_Result;

/* ----------------

* function prototypes for heap access method

@@ -178,4 +187,29 @@ extern Size SyncScanShmemSize(void);

struct VacuumParams;

extern void heap_vacuum_rel(Relation onerel, int options,

struct VacuumParams *params, BufferAccessStrategy bstrategy);

+/* in heap/heapam_visibility.c */

+extern bool HeapTupleSatisfiesVisibility(HeapTuple stup, Snapshot snapshot,

+ Buffer buffer);

+extern HTSU_Result HeapTupleSatisfiesUpdate(HeapTuple stup, CommandId curcid,

+ Buffer buffer);

+extern HTSV_Result HeapTupleSatisfiesVacuum(HeapTuple stup, TransactionId OldestXmin,

+ Buffer buffer);

+extern void HeapTupleSetHintBits(HeapTupleHeader tuple, Buffer buffer,

+ uint16 infomask, TransactionId xid);

+extern bool HeapTupleHeaderIsOnlyLocked(HeapTupleHeader tuple);

+extern bool XidInMVCCSnapshot(TransactionId xid, Snapshot snapshot);

+extern bool HeapTupleIsSurelyDead(HeapTuple htup, TransactionId OldestXmin);

+/*

+ * To avoid leaking too much knowledge about reorderbuffer implementation

+ * details this is implemented in reorderbuffer.c not heapam_visibility.c

+ */

+struct HTAB;

+extern bool ResolveCminCmaxDuringDecoding(struct HTAB *tuplecid_data,

+ Snapshot snapshot,

+ HeapTuple htup,

+ Buffer buffer,

+ CommandId *cmin, CommandId *cmax);

#endif /* HEAPAM_H */

diff --git a/src/include/utils/snapshot.h b/src/include/utils/snapshot.h

index 952307103fc78a3d9dd28998948ffb3835369a00..e7ea5cf7b565a0224d74fc77a1c5486b5fa88717 100644 (file)

--- a/src/include/utils/snapshot.h

+++ b/src/include/utils/snapshot.h

@@ -185,8 +185,7 @@ typedef struct SnapshotData

} SnapshotData;

- * Result codes for HeapTupleSatisfiesUpdate. This should really be in

- * tqual.h, but we want to avoid including that file elsewhere.

+ * Result codes for HeapTupleSatisfiesUpdate.

typedef enum

{

diff --git a/src/include/utils/tqual.h b/src/include/utils/tqual.h

deleted file mode 100644 (file)
index de8c799..0000000

--- a/src/include/utils/tqual.h

+++ /dev/null

@@ -1,56 +0,0 @@

-/*-------------------------------------------------------------------------

- *

- * tqual.h

- * POSTGRES "time qualification" definitions, ie, tuple visibility rules.

- *

- * Should be moved/renamed... - vadim 07/28/98

- *

- * src/include/utils/tqual.h

- *

- *-------------------------------------------------------------------------

- */

-#ifndef TQUAL_H

-#define TQUAL_H

-#include "utils/snapshot.h"

-extern bool HeapTupleSatisfiesVisibility(HeapTuple stup, Snapshot snapshot,

- Buffer buffer);

-/* Result codes for HeapTupleSatisfiesVacuum */

-typedef enum

- HEAPTUPLE_DEAD, /* tuple is dead and deletable */

- HEAPTUPLE_LIVE, /* tuple is live (committed, no deleter) */

- HEAPTUPLE_RECENTLY_DEAD, /* tuple is dead, but not deletable yet */

- HEAPTUPLE_INSERT_IN_PROGRESS, /* inserting xact is still in progress */

- HEAPTUPLE_DELETE_IN_PROGRESS /* deleting xact is still in progress */

-} HTSV_Result;

-/* Special "satisfies" routines with different APIs */

-extern HTSU_Result HeapTupleSatisfiesUpdate(HeapTuple htup,

- CommandId curcid, Buffer buffer);

-extern HTSV_Result HeapTupleSatisfiesVacuum(HeapTuple htup,

- TransactionId OldestXmin, Buffer buffer);

-extern bool HeapTupleIsSurelyDead(HeapTuple htup,

- TransactionId OldestXmin);

-extern void HeapTupleSetHintBits(HeapTupleHeader tuple, Buffer buffer,

- uint16 infomask, TransactionId xid);

-extern bool HeapTupleHeaderIsOnlyLocked(HeapTupleHeader tuple);

-/*

- * To avoid leaking too much knowledge about reorderbuffer implementation

- * details this is implemented in reorderbuffer.c not tqual.c.

- */

-struct HTAB;

-extern bool ResolveCminCmaxDuringDecoding(struct HTAB *tuplecid_data,

- Snapshot snapshot,

- HeapTuple htup,

- Buffer buffer,

- CommandId *cmin, CommandId *cmax);

-#endif /* TQUAL_H */

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