Index: doc/src/sgml/catalogs.sgml
===================================================================
RCS file: /home/alvherre/cvs/pgsql/doc/src/sgml/catalogs.sgml,v
retrieving revision 2.124
diff -c -r2.124 catalogs.sgml
*** doc/src/sgml/catalogs.sgml 3 Jun 2006 02:53:04 -0000 2.124
--- doc/src/sgml/catalogs.sgml 28 Jun 2006 18:02:59 -0000
***************
*** 1633,1638 ****
--- 1633,1662 ----
+ relminxid
+ xid
+
+
+ The minimum transaction ID present in all rows in this table. This
+ value is used to determine the database-global
+ pg_database>.datminxid> value.
+
+
+
+
+ relvacuumxid
+ xid
+
+
+ The transaction ID that was used as cleaning point as of the last vacuum
+ operation. All rows inserted, updated or deleted in this table by
+ transactions whose IDs are below this one have been marked as known good
+ or deleted. This is used to determine the database-global
+ pg_database>.datvacuumxid> value.
+
+
+
+
relacl
aclitem[]
***************
*** 2006,2026 ****
xid
! All rows inserted or deleted by transaction IDs before this one
! have been marked as known committed or known aborted in this database.
! This is used to determine when commit-log space can be recycled.
! datfrozenxid
xid
All rows inserted by transaction IDs before this one have been
relabeled with a permanent (frozen>) transaction ID in this
! database. This is useful to check whether a database must be vacuumed
! soon to avoid transaction ID wrap-around problems.
--- 2030,2056 ----
xid
! The transaction ID that was used as cleaning point as of the last vacuum
! operation. All rows inserted or deleted by transaction IDs before this one
! have been marked as known good or deleted. This
! is used to determine when commit-log space can be recycled.
! If InvalidTransactionId, then the minimum is unknown and can be
! determined by scanning pg_class>.relvacuumxid>.
! datminxid
xid
+ The minimum transaction ID present in all tables in this database.
All rows inserted by transaction IDs before this one have been
relabeled with a permanent (frozen>) transaction ID in this
! database. This is useful to check whether a database must be
! vacuumed soon to avoid transaction ID wrap-around problems.
! If InvalidTransactionId, then the minimum is unknown and can be
! determined by scanning pg_class>.relminxid>.
Index: src/backend/access/transam/varsup.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/access/transam/varsup.c,v
retrieving revision 1.70
diff -c -r1.70 varsup.c
*** src/backend/access/transam/varsup.c 5 Mar 2006 15:58:22 -0000 1.70
--- src/backend/access/transam/varsup.c 28 Jun 2006 18:02:59 -0000
***************
*** 168,178 ****
/*
* Determine the last safe XID to allocate given the currently oldest
! * datfrozenxid (ie, the oldest XID that might exist in any database
* of our cluster).
*/
void
! SetTransactionIdLimit(TransactionId oldest_datfrozenxid,
Name oldest_datname)
{
TransactionId xidWarnLimit;
--- 168,178 ----
/*
* Determine the last safe XID to allocate given the currently oldest
! * datminxid (ie, the oldest XID that might exist in any database
* of our cluster).
*/
void
! SetTransactionIdLimit(TransactionId oldest_datminxid,
Name oldest_datname)
{
TransactionId xidWarnLimit;
***************
*** 180,195 ****
TransactionId xidWrapLimit;
TransactionId curXid;
! Assert(TransactionIdIsValid(oldest_datfrozenxid));
/*
* The place where we actually get into deep trouble is halfway around
! * from the oldest potentially-existing XID. (This calculation is
! * probably off by one or two counts, because the special XIDs reduce the
! * size of the loop a little bit. But we throw in plenty of slop below,
! * so it doesn't matter.)
*/
! xidWrapLimit = oldest_datfrozenxid + (MaxTransactionId >> 1);
if (xidWrapLimit < FirstNormalTransactionId)
xidWrapLimit += FirstNormalTransactionId;
--- 180,195 ----
TransactionId xidWrapLimit;
TransactionId curXid;
! Assert(TransactionIdIsValid(oldest_datminxid));
/*
* The place where we actually get into deep trouble is halfway around
! * from the oldest existing XID. (This calculation is probably off by one
! * or two counts, because the special XIDs reduce the size of the loop a
! * little bit. But we throw in plenty of slop below, so it doesn't
! * matter.)
*/
! xidWrapLimit = oldest_datminxid + (MaxTransactionId >> 1);
if (xidWrapLimit < FirstNormalTransactionId)
xidWrapLimit += FirstNormalTransactionId;
Index: src/backend/catalog/heap.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/catalog/heap.c,v
retrieving revision 1.299
diff -c -r1.299 heap.c
*** src/backend/catalog/heap.c 10 May 2006 23:18:39 -0000 1.299
--- src/backend/catalog/heap.c 28 Jun 2006 22:04:56 -0000
***************
*** 568,573 ****
--- 568,602 ----
*/
new_rel_reltup = new_rel_desc->rd_rel;
+ /* Initialize relminxid and relvacuumxid */
+ if (relkind == RELKIND_RELATION ||
+ relkind == RELKIND_TOASTVALUE)
+ {
+ /*
+ * Only real tables have Xids stored in them; initialize our known
+ * value to the minimum Xid that could put tuples in the new table.
+ */
+ if (!IsBootstrapProcessingMode())
+ {
+ new_rel_reltup->relminxid = RecentXmin;
+ new_rel_reltup->relvacuumxid = RecentXmin;
+ }
+ else
+ {
+ new_rel_reltup->relminxid = FirstNormalTransactionId;
+ new_rel_reltup->relvacuumxid = FirstNormalTransactionId;
+ }
+ }
+ else
+ {
+ /*
+ * Other relations will not have Xids in them, so set the initial value
+ * to InvalidTransactionId.
+ */
+ new_rel_reltup->relminxid = InvalidTransactionId;
+ new_rel_reltup->relvacuumxid = InvalidTransactionId;
+ }
+
switch (relkind)
{
case RELKIND_RELATION:
Index: src/backend/commands/analyze.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/commands/analyze.c,v
retrieving revision 1.93
diff -c -r1.93 analyze.c
*** src/backend/commands/analyze.c 23 Mar 2006 00:19:28 -0000 1.93
--- src/backend/commands/analyze.c 28 Jun 2006 18:02:59 -0000
***************
*** 424,431 ****
{
vac_update_relstats(RelationGetRelid(onerel),
RelationGetNumberOfBlocks(onerel),
! totalrows,
! hasindex);
for (ind = 0; ind < nindexes; ind++)
{
AnlIndexData *thisdata = &indexdata[ind];
--- 424,432 ----
{
vac_update_relstats(RelationGetRelid(onerel),
RelationGetNumberOfBlocks(onerel),
! totalrows, hasindex,
! InvalidTransactionId, InvalidTransactionId);
!
for (ind = 0; ind < nindexes; ind++)
{
AnlIndexData *thisdata = &indexdata[ind];
***************
*** 434,441 ****
totalindexrows = ceil(thisdata->tupleFract * totalrows);
vac_update_relstats(RelationGetRelid(Irel[ind]),
RelationGetNumberOfBlocks(Irel[ind]),
! totalindexrows,
! false);
}
/* report results to the stats collector, too */
--- 435,442 ----
totalindexrows = ceil(thisdata->tupleFract * totalrows);
vac_update_relstats(RelationGetRelid(Irel[ind]),
RelationGetNumberOfBlocks(Irel[ind]),
! totalindexrows, false,
! InvalidTransactionId, InvalidTransactionId);
}
/* report results to the stats collector, too */
Index: src/backend/commands/dbcommands.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/commands/dbcommands.c,v
retrieving revision 1.181
diff -c -r1.181 dbcommands.c
*** src/backend/commands/dbcommands.c 4 May 2006 16:07:29 -0000 1.181
--- src/backend/commands/dbcommands.c 28 Jun 2006 18:24:18 -0000
***************
*** 55,61 ****
Oid *dbIdP, Oid *ownerIdP,
int *encodingP, bool *dbIsTemplateP, bool *dbAllowConnP,
Oid *dbLastSysOidP,
! TransactionId *dbVacuumXidP, TransactionId *dbFrozenXidP,
Oid *dbTablespace);
static bool have_createdb_privilege(void);
static void remove_dbtablespaces(Oid db_id);
--- 55,61 ----
Oid *dbIdP, Oid *ownerIdP,
int *encodingP, bool *dbIsTemplateP, bool *dbAllowConnP,
Oid *dbLastSysOidP,
! TransactionId *dbVacuumXidP, TransactionId *dbMinXidP,
Oid *dbTablespace);
static bool have_createdb_privilege(void);
static void remove_dbtablespaces(Oid db_id);
***************
*** 76,82 ****
bool src_allowconn;
Oid src_lastsysoid;
TransactionId src_vacuumxid;
! TransactionId src_frozenxid;
Oid src_deftablespace;
volatile Oid dst_deftablespace;
Relation pg_database_rel;
--- 76,82 ----
bool src_allowconn;
Oid src_lastsysoid;
TransactionId src_vacuumxid;
! TransactionId src_minxid;
Oid src_deftablespace;
volatile Oid dst_deftablespace;
Relation pg_database_rel;
***************
*** 228,234 ****
if (!get_db_info(dbtemplate, ShareLock,
&src_dboid, &src_owner, &src_encoding,
&src_istemplate, &src_allowconn, &src_lastsysoid,
! &src_vacuumxid, &src_frozenxid, &src_deftablespace))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_DATABASE),
errmsg("template database \"%s\" does not exist",
--- 228,234 ----
if (!get_db_info(dbtemplate, ShareLock,
&src_dboid, &src_owner, &src_encoding,
&src_istemplate, &src_allowconn, &src_lastsysoid,
! &src_vacuumxid, &src_minxid, &src_deftablespace))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_DATABASE),
errmsg("template database \"%s\" does not exist",
***************
*** 327,342 ****
}
/*
- * Normally we mark the new database with the same datvacuumxid and
- * datfrozenxid as the source. However, if the source is not allowing
- * connections then we assume it is fully frozen, and we can set the
- * current transaction ID as the xid limits. This avoids immediately
- * starting to generate warnings after cloning template0.
- */
- if (!src_allowconn)
- src_vacuumxid = src_frozenxid = GetCurrentTransactionId();
-
- /*
* Check for db name conflict. This is just to give a more friendly
* error message than "unique index violation". There's a race condition
* but we're willing to accept the less friendly message in that case.
--- 327,332 ----
***************
*** 367,373 ****
new_record[Anum_pg_database_datconnlimit - 1] = Int32GetDatum(dbconnlimit);
new_record[Anum_pg_database_datlastsysoid - 1] = ObjectIdGetDatum(src_lastsysoid);
new_record[Anum_pg_database_datvacuumxid - 1] = TransactionIdGetDatum(src_vacuumxid);
! new_record[Anum_pg_database_datfrozenxid - 1] = TransactionIdGetDatum(src_frozenxid);
new_record[Anum_pg_database_dattablespace - 1] = ObjectIdGetDatum(dst_deftablespace);
/*
--- 357,363 ----
new_record[Anum_pg_database_datconnlimit - 1] = Int32GetDatum(dbconnlimit);
new_record[Anum_pg_database_datlastsysoid - 1] = ObjectIdGetDatum(src_lastsysoid);
new_record[Anum_pg_database_datvacuumxid - 1] = TransactionIdGetDatum(src_vacuumxid);
! new_record[Anum_pg_database_datminxid - 1] = TransactionIdGetDatum(src_minxid);
new_record[Anum_pg_database_dattablespace - 1] = ObjectIdGetDatum(dst_deftablespace);
/*
***************
*** 1066,1072 ****
Oid *dbIdP, Oid *ownerIdP,
int *encodingP, bool *dbIsTemplateP, bool *dbAllowConnP,
Oid *dbLastSysOidP,
! TransactionId *dbVacuumXidP, TransactionId *dbFrozenXidP,
Oid *dbTablespace)
{
bool result = false;
--- 1056,1062 ----
Oid *dbIdP, Oid *ownerIdP,
int *encodingP, bool *dbIsTemplateP, bool *dbAllowConnP,
Oid *dbLastSysOidP,
! TransactionId *dbVacuumXidP, TransactionId *dbMinXidP,
Oid *dbTablespace)
{
bool result = false;
***************
*** 1155,1163 ****
/* limit of vacuumed XIDs */
if (dbVacuumXidP)
*dbVacuumXidP = dbform->datvacuumxid;
! /* limit of frozen XIDs */
! if (dbFrozenXidP)
! *dbFrozenXidP = dbform->datfrozenxid;
/* default tablespace for this database */
if (dbTablespace)
*dbTablespace = dbform->dattablespace;
--- 1145,1153 ----
/* limit of vacuumed XIDs */
if (dbVacuumXidP)
*dbVacuumXidP = dbform->datvacuumxid;
! /* limit of min XIDs */
! if (dbMinXidP)
! *dbMinXidP = dbform->datminxid;
/* default tablespace for this database */
if (dbTablespace)
*dbTablespace = dbform->dattablespace;
Index: src/backend/commands/vacuum.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/commands/vacuum.c,v
retrieving revision 1.330
diff -c -r1.330 vacuum.c
*** src/backend/commands/vacuum.c 10 May 2006 23:18:39 -0000 1.330
--- src/backend/commands/vacuum.c 28 Jun 2006 23:28:37 -0000
***************
*** 25,30 ****
--- 25,31 ----
#include "access/clog.h"
#include "access/genam.h"
#include "access/heapam.h"
+ #include "access/multixact.h"
#include "access/subtrans.h"
#include "access/xlog.h"
#include "catalog/catalog.h"
***************
*** 127,132 ****
--- 128,134 ----
Size min_tlen;
Size max_tlen;
bool hasindex;
+ TransactionId minxid; /* Minimum Xid present anywhere on table */
/* vtlinks array for tuple chain following - sorted by new_tid */
int num_vtlinks;
VTupleLink vtlinks;
***************
*** 194,218 ****
static int elevel = -1;
- static TransactionId OldestXmin;
- static TransactionId FreezeLimit;
-
/* non-export function prototypes */
static List *get_rel_oids(List *relids, const RangeVar *vacrel,
const char *stmttype);
! static void vac_update_dbstats(Oid dbid,
! TransactionId vacuumXID,
! TransactionId frozenXID);
! static void vac_truncate_clog(TransactionId vacuumXID,
! TransactionId frozenXID);
! static bool vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind);
static void full_vacuum_rel(Relation onerel, VacuumStmt *vacstmt);
static void scan_heap(VRelStats *vacrelstats, Relation onerel,
! VacPageList vacuum_pages, VacPageList fraged_pages);
static void repair_frag(VRelStats *vacrelstats, Relation onerel,
VacPageList vacuum_pages, VacPageList fraged_pages,
! int nindexes, Relation *Irel);
static void move_chain_tuple(Relation rel,
Buffer old_buf, Page old_page, HeapTuple old_tup,
Buffer dst_buf, Page dst_page, VacPage dst_vacpage,
--- 196,217 ----
static int elevel = -1;
/* non-export function prototypes */
static List *get_rel_oids(List *relids, const RangeVar *vacrel,
const char *stmttype);
! static void vac_update_dbminxid(Oid dbid,
! TransactionId *minxid,
! TransactionId *vacuumxid);
! static void vac_truncate_clog(TransactionId myminxid, TransactionId myvacxid);
! static void vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind);
static void full_vacuum_rel(Relation onerel, VacuumStmt *vacstmt);
static void scan_heap(VRelStats *vacrelstats, Relation onerel,
! VacPageList vacuum_pages, VacPageList fraged_pages,
! TransactionId FreezeLimit, TransactionId OldestXmin);
static void repair_frag(VRelStats *vacrelstats, Relation onerel,
VacPageList vacuum_pages, VacPageList fraged_pages,
! int nindexes, Relation *Irel, TransactionId OldestXmin);
static void move_chain_tuple(Relation rel,
Buffer old_buf, Page old_page, HeapTuple old_tup,
Buffer dst_buf, Page dst_page, VacPage dst_vacpage,
***************
*** 268,275 ****
vacuum(VacuumStmt *vacstmt, List *relids)
{
const char *stmttype = vacstmt->vacuum ? "VACUUM" : "ANALYZE";
- TransactionId initialOldestXmin = InvalidTransactionId;
- TransactionId initialFreezeLimit = InvalidTransactionId;
volatile MemoryContext anl_context = NULL;
volatile bool all_rels,
in_outer_xact,
--- 267,272 ----
***************
*** 352,383 ****
*/
relations = get_rel_oids(relids, vacstmt->relation, stmttype);
- if (vacstmt->vacuum && all_rels)
- {
- /*
- * It's a database-wide VACUUM.
- *
- * Compute the initially applicable OldestXmin and FreezeLimit XIDs,
- * so that we can record these values at the end of the VACUUM. Note
- * that individual tables may well be processed with newer values, but
- * we can guarantee that no (non-shared) relations are processed with
- * older ones.
- *
- * It is okay to record non-shared values in pg_database, even though
- * we may vacuum shared relations with older cutoffs, because only the
- * minimum of the values present in pg_database matters. We can be
- * sure that shared relations have at some time been vacuumed with
- * cutoffs no worse than the global minimum; for, if there is a
- * backend in some other DB with xmin = OLDXMIN that's determining the
- * cutoff with which we vacuum shared relations, it is not possible
- * for that database to have a cutoff newer than OLDXMIN recorded in
- * pg_database.
- */
- vacuum_set_xid_limits(vacstmt, false,
- &initialOldestXmin,
- &initialFreezeLimit);
- }
-
/*
* Decide whether we need to start/commit our own transactions.
*
--- 349,354 ----
***************
*** 445,454 ****
Oid relid = lfirst_oid(cur);
if (vacstmt->vacuum)
! {
! if (!vacuum_rel(relid, vacstmt, RELKIND_RELATION))
! all_rels = false; /* forget about updating dbstats */
! }
if (vacstmt->analyze)
{
MemoryContext old_context = NULL;
--- 416,423 ----
Oid relid = lfirst_oid(cur);
if (vacstmt->vacuum)
! vacuum_rel(relid, vacstmt, RELKIND_RELATION);
!
if (vacstmt->analyze)
{
MemoryContext old_context = NULL;
***************
*** 524,529 ****
--- 493,501 ----
if (vacstmt->vacuum)
{
+ TransactionId minxid,
+ vacuumxid;
+
/*
* If it was a database-wide VACUUM, print FSM usage statistics (we
* don't make you be superuser to see these).
***************
*** 531,547 ****
if (all_rels)
PrintFreeSpaceMapStatistics(elevel);
! /*
! * If we completed a database-wide VACUUM without skipping any
! * relations, update the database's pg_database row with info about
! * the transaction IDs used, and try to truncate pg_clog.
! */
! if (all_rels)
! {
! vac_update_dbstats(MyDatabaseId,
! initialOldestXmin, initialFreezeLimit);
! vac_truncate_clog(initialOldestXmin, initialFreezeLimit);
! }
}
/*
--- 503,513 ----
if (all_rels)
PrintFreeSpaceMapStatistics(elevel);
! /* Update pg_database.datminxid and datvacuumxid */
! vac_update_dbminxid(MyDatabaseId, &minxid, &vacuumxid);
!
! /* Try to truncate pg_clog. */
! vac_truncate_clog(minxid, vacuumxid);
}
/*
***************
*** 687,693 ****
*/
void
vac_update_relstats(Oid relid, BlockNumber num_pages, double num_tuples,
! bool hasindex)
{
Relation rd;
HeapTuple ctup;
--- 653,660 ----
*/
void
vac_update_relstats(Oid relid, BlockNumber num_pages, double num_tuples,
! bool hasindex, TransactionId minxid,
! TransactionId vacuumxid)
{
Relation rd;
HeapTuple ctup;
***************
*** 735,740 ****
--- 702,717 ----
dirty = true;
}
}
+ if (TransactionIdIsValid(minxid) && pgcform->relminxid != minxid)
+ {
+ pgcform->relminxid = minxid;
+ dirty = true;
+ }
+ if (TransactionIdIsValid(vacuumxid) && pgcform->relvacuumxid != vacuumxid)
+ {
+ pgcform->relvacuumxid = vacuumxid;
+ dirty = true;
+ }
/*
* If anything changed, write out the tuple
***************
*** 747,756 ****
/*
! * vac_update_dbstats() -- update statistics for one database
*
! * Update the whole-database statistics that are kept in its pg_database
! * row, and the flat-file copy of pg_database.
*
* We violate transaction semantics here by overwriting the database's
* existing pg_database tuple with the new values. This is reasonably
--- 724,736 ----
/*
! * vac_update_dbminxid() -- update the minimum Xid present in one database
*
! * Update pg_database's datminxid and datvacuumxid, and the flat-file copy
! * of it. datminxid is updated to the minimum of all relminxid found in
! * pg_class. datvacuumxid is updated to the minimum of all relvacuumxid
! * found in pg_class. The values are also returned in minxid and
! * vacuumxid, respectively.
*
* We violate transaction semantics here by overwriting the database's
* existing pg_database tuple with the new values. This is reasonably
***************
*** 758,775 ****
* commits. As with vac_update_relstats, this avoids leaving dead tuples
* behind after a VACUUM.
*
! * This routine is shared by full and lazy VACUUM. Note that it is only
! * applied after a database-wide VACUUM operation.
*/
static void
! vac_update_dbstats(Oid dbid,
! TransactionId vacuumXID,
! TransactionId frozenXID)
{
- Relation relation;
HeapTuple tuple;
Form_pg_database dbform;
relation = heap_open(DatabaseRelationId, RowExclusiveLock);
/* Fetch a copy of the tuple to scribble on */
--- 738,804 ----
* commits. As with vac_update_relstats, this avoids leaving dead tuples
* behind after a VACUUM.
*
! * This routine is shared by full and lazy VACUUM.
*/
static void
! vac_update_dbminxid(Oid dbid, TransactionId *minxid, TransactionId *vacuumxid)
{
HeapTuple tuple;
Form_pg_database dbform;
+ Relation relation;
+ SysScanDesc scan;
+ HeapTuple classTup;
+ TransactionId newMinXid = InvalidTransactionId;
+ TransactionId newVacXid = InvalidTransactionId;
+ bool dirty = false;
+
+ /*
+ * We must seqscan pg_class to find the minimum Xid, because there
+ * is no index that can help us here.
+ */
+ relation = heap_open(RelationRelationId, AccessShareLock);
+
+ scan = systable_beginscan(relation, InvalidOid, false,
+ SnapshotNow, 0, NULL);
+
+ while ((classTup = systable_getnext(scan)) != NULL)
+ {
+ Form_pg_class classForm;
+
+ classForm = (Form_pg_class) GETSTRUCT(classTup);
+
+ /*
+ * Only consider heap and TOAST tables (anything else should have
+ * InvalidTransactionId in both fields anyway.)
+ */
+ if (classForm->relkind != RELKIND_RELATION &&
+ classForm->relkind != RELKIND_TOASTVALUE)
+ continue;
+
+ Assert(TransactionIdIsNormal(classForm->relminxid));
+ Assert(TransactionIdIsNormal(classForm->relvacuumxid));
+
+ /*
+ * Compute the minimum relminxid in all the tables in the database.
+ */
+ if ((!TransactionIdIsValid(newMinXid) ||
+ TransactionIdPrecedes(classForm->relminxid, newMinXid)))
+ newMinXid = classForm->relminxid;
+
+ /* ditto, for relvacuumxid */
+ if ((!TransactionIdIsValid(newVacXid) ||
+ TransactionIdPrecedes(classForm->relvacuumxid, newVacXid)))
+ newVacXid = classForm->relvacuumxid;
+ }
+ /* we're done with pg_class */
+ systable_endscan(scan);
+ heap_close(relation, AccessShareLock);
+
+ Assert(TransactionIdIsNormal(newMinXid));
+ Assert(TransactionIdIsNormal(newVacXid));
+
+ /* Now fetch the pg_database tuple we need to update. */
relation = heap_open(DatabaseRelationId, RowExclusiveLock);
/* Fetch a copy of the tuple to scribble on */
***************
*** 780,795 ****
elog(ERROR, "could not find tuple for database %u", dbid);
dbform = (Form_pg_database) GETSTRUCT(tuple);
! /* overwrite the existing statistics in the tuple */
! dbform->datvacuumxid = vacuumXID;
! dbform->datfrozenxid = frozenXID;
! heap_inplace_update(relation, tuple);
heap_close(relation, RowExclusiveLock);
! /* Mark the flat-file copy of pg_database for update at commit */
! database_file_update_needed();
}
--- 809,834 ----
elog(ERROR, "could not find tuple for database %u", dbid);
dbform = (Form_pg_database) GETSTRUCT(tuple);
! if (TransactionIdPrecedes(dbform->datminxid, newMinXid))
! {
! dbform->datminxid = newMinXid;
! dirty = true;
! }
! if (TransactionIdPrecedes(dbform->datvacuumxid, newVacXid))
! {
! dbform->datvacuumxid = newVacXid;
! dirty = true;
! }
! if (dirty)
! heap_inplace_update(relation, tuple);
+ heap_freetuple(tuple);
heap_close(relation, RowExclusiveLock);
! /* set return values */
! *minxid = newMinXid;
! *vacuumxid = newVacXid;
}
***************
*** 813,830 ****
* applied after a database-wide VACUUM operation.
*/
static void
! vac_truncate_clog(TransactionId vacuumXID, TransactionId frozenXID)
{
TransactionId myXID = GetCurrentTransactionId();
Relation relation;
HeapScanDesc scan;
HeapTuple tuple;
int32 age;
NameData oldest_datname;
bool vacuumAlreadyWrapped = false;
! bool frozenAlreadyWrapped = false;
! /* init oldest_datname to sync with my frozenXID */
namestrcpy(&oldest_datname, get_database_name(MyDatabaseId));
/*
--- 852,873 ----
* applied after a database-wide VACUUM operation.
*/
static void
! vac_truncate_clog(TransactionId myminxid, TransactionId myvacxid)
{
TransactionId myXID = GetCurrentTransactionId();
+ TransactionId minXID;
+ TransactionId vacuumXID;
Relation relation;
HeapScanDesc scan;
HeapTuple tuple;
int32 age;
NameData oldest_datname;
bool vacuumAlreadyWrapped = false;
! bool minAlreadyWrapped = false;
! /* Initialize the minimum values. */
! minXID = myminxid;
! vacuumXID = myvacxid;
namestrcpy(&oldest_datname, get_database_name(MyDatabaseId));
/*
***************
*** 839,865 ****
{
Form_pg_database dbform = (Form_pg_database) GETSTRUCT(tuple);
! /* Ignore non-connectable databases (eg, template0) */
! /* It's assumed that these have been frozen correctly */
! if (!dbform->datallowconn)
! continue;
! if (TransactionIdIsNormal(dbform->datvacuumxid))
{
! if (TransactionIdPrecedes(myXID, dbform->datvacuumxid))
! vacuumAlreadyWrapped = true;
! else if (TransactionIdPrecedes(dbform->datvacuumxid, vacuumXID))
! vacuumXID = dbform->datvacuumxid;
! }
! if (TransactionIdIsNormal(dbform->datfrozenxid))
! {
! if (TransactionIdPrecedes(myXID, dbform->datfrozenxid))
! frozenAlreadyWrapped = true;
! else if (TransactionIdPrecedes(dbform->datfrozenxid, frozenXID))
! {
! frozenXID = dbform->datfrozenxid;
! namecpy(&oldest_datname, &dbform->datname);
! }
}
}
--- 882,901 ----
{
Form_pg_database dbform = (Form_pg_database) GETSTRUCT(tuple);
! Assert(TransactionIdIsNormal(dbform->datvacuumxid));
! Assert(TransactionIdIsNormal(dbform->datminxid));
! if (TransactionIdPrecedes(myXID, dbform->datvacuumxid))
! vacuumAlreadyWrapped = true;
! else if (TransactionIdPrecedes(dbform->datvacuumxid, vacuumXID))
! vacuumXID = dbform->datvacuumxid;
!
! if (TransactionIdPrecedes(myXID, dbform->datminxid))
! minAlreadyWrapped = true;
! else if (TransactionIdPrecedes(dbform->datminxid, minXID))
{
! minXID = dbform->datminxid;
! namecpy(&oldest_datname, &dbform->datname);
}
}
***************
*** 886,892 ****
* Do not update varsup.c if we seem to have suffered wraparound already;
* the computed XID might be bogus.
*/
! if (frozenAlreadyWrapped)
{
ereport(WARNING,
(errmsg("some databases have not been vacuumed in over 1 billion transactions"),
--- 922,928 ----
* Do not update varsup.c if we seem to have suffered wraparound already;
* the computed XID might be bogus.
*/
! if (minAlreadyWrapped)
{
ereport(WARNING,
(errmsg("some databases have not been vacuumed in over 1 billion transactions"),
***************
*** 895,904 ****
}
/* Update the wrap limit for GetNewTransactionId */
! SetTransactionIdLimit(frozenXID, &oldest_datname);
/* Give warning about impending wraparound problems */
! age = (int32) (myXID - frozenXID);
if (age > (int32) ((MaxTransactionId >> 3) * 3))
ereport(WARNING,
(errmsg("database \"%s\" must be vacuumed within %u transactions",
--- 931,940 ----
}
/* Update the wrap limit for GetNewTransactionId */
! SetTransactionIdLimit(minXID, &oldest_datname);
/* Give warning about impending wraparound problems */
! age = (int32) (myXID - minXID);
if (age > (int32) ((MaxTransactionId >> 3) * 3))
ereport(WARNING,
(errmsg("database \"%s\" must be vacuumed within %u transactions",
***************
*** 920,930 ****
/*
* vacuum_rel() -- vacuum one heap relation
*
- * Returns TRUE if we actually processed the relation (or can ignore it
- * for some reason), FALSE if we failed to process it due to permissions
- * or other reasons. (A FALSE result really means that some data
- * may have been left unvacuumed, so we can't update XID stats.)
- *
* Doing one heap at a time incurs extra overhead, since we need to
* check that the heap exists again just before we vacuum it. The
* reason that we do this is so that vacuuming can be spread across
--- 956,961 ----
***************
*** 933,952 ****
*
* At entry and exit, we are not inside a transaction.
*/
! static bool
vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind)
{
LOCKMODE lmode;
Relation onerel;
LockRelId onerelid;
Oid toast_relid;
- bool result;
/* Begin a transaction for vacuuming this relation */
StartTransactionCommand();
/* functions in indexes may want a snapshot set */
ActiveSnapshot = CopySnapshot(GetTransactionSnapshot());
/*
* Tell the cache replacement strategy that vacuum is causing all
* following IO
--- 964,983 ----
*
* At entry and exit, we are not inside a transaction.
*/
! static void
vacuum_rel(Oid relid, VacuumStmt *vacstmt, char expected_relkind)
{
LOCKMODE lmode;
Relation onerel;
LockRelId onerelid;
Oid toast_relid;
/* Begin a transaction for vacuuming this relation */
StartTransactionCommand();
/* functions in indexes may want a snapshot set */
ActiveSnapshot = CopySnapshot(GetTransactionSnapshot());
+
/*
* Tell the cache replacement strategy that vacuum is causing all
* following IO
***************
*** 969,975 ****
{
StrategyHintVacuum(false);
CommitTransactionCommand();
! return true; /* okay 'cause no data there */
}
/*
--- 1000,1006 ----
{
StrategyHintVacuum(false);
CommitTransactionCommand();
! return;
}
/*
***************
*** 1000,1006 ****
relation_close(onerel, lmode);
StrategyHintVacuum(false);
CommitTransactionCommand();
! return false;
}
/*
--- 1031,1037 ----
relation_close(onerel, lmode);
StrategyHintVacuum(false);
CommitTransactionCommand();
! return;
}
/*
***************
*** 1015,1021 ****
relation_close(onerel, lmode);
StrategyHintVacuum(false);
CommitTransactionCommand();
! return false;
}
/*
--- 1046,1052 ----
relation_close(onerel, lmode);
StrategyHintVacuum(false);
CommitTransactionCommand();
! return;
}
/*
***************
*** 1030,1036 ****
relation_close(onerel, lmode);
StrategyHintVacuum(false);
CommitTransactionCommand();
! return true; /* assume no long-lived data in temp tables */
}
/*
--- 1061,1067 ----
relation_close(onerel, lmode);
StrategyHintVacuum(false);
CommitTransactionCommand();
! return; /* assume no long-lived data in temp tables */
}
/*
***************
*** 1059,1066 ****
else
lazy_vacuum_rel(onerel, vacstmt);
- result = true; /* did the vacuum */
-
/* all done with this class, but hold lock until commit */
relation_close(onerel, NoLock);
--- 1090,1095 ----
***************
*** 1078,1094 ****
* totally unimportant for toast relations.
*/
if (toast_relid != InvalidOid)
! {
! if (!vacuum_rel(toast_relid, vacstmt, RELKIND_TOASTVALUE))
! result = false; /* failed to vacuum the TOAST table? */
! }
/*
* Now release the session-level lock on the master table.
*/
UnlockRelationForSession(&onerelid, lmode);
! return result;
}
--- 1107,1120 ----
* totally unimportant for toast relations.
*/
if (toast_relid != InvalidOid)
! vacuum_rel(toast_relid, vacstmt, RELKIND_TOASTVALUE);
/*
* Now release the session-level lock on the master table.
*/
UnlockRelationForSession(&onerelid, lmode);
! return;
}
***************
*** 1120,1125 ****
--- 1146,1153 ----
int nindexes,
i;
VRelStats *vacrelstats;
+ TransactionId FreezeLimit,
+ OldestXmin;
vacuum_set_xid_limits(vacstmt, onerel->rd_rel->relisshared,
&OldestXmin, &FreezeLimit);
***************
*** 1132,1140 ****
vacrelstats->rel_tuples = 0;
vacrelstats->hasindex = false;
/* scan the heap */
vacuum_pages.num_pages = fraged_pages.num_pages = 0;
! scan_heap(vacrelstats, onerel, &vacuum_pages, &fraged_pages);
/* Now open all indexes of the relation */
vac_open_indexes(onerel, AccessExclusiveLock, &nindexes, &Irel);
--- 1160,1180 ----
vacrelstats->rel_tuples = 0;
vacrelstats->hasindex = false;
+ /*
+ * Set initial minimum Xid, which will be updated if a smaller Xid is found
+ * in the relation by scan_heap.
+ *
+ * We use RecentXmin here (the minimum Xid that belongs to a transaction
+ * that is still open according to our snapshot), because it is the
+ * earliest transaction that could insert new tuples in the table after our
+ * VACUUM is done.
+ */
+ vacrelstats->minxid = RecentXmin;
+
/* scan the heap */
vacuum_pages.num_pages = fraged_pages.num_pages = 0;
! scan_heap(vacrelstats, onerel, &vacuum_pages, &fraged_pages, FreezeLimit,
! OldestXmin);
/* Now open all indexes of the relation */
vac_open_indexes(onerel, AccessExclusiveLock, &nindexes, &Irel);
***************
*** 1162,1168 ****
{
/* Try to shrink heap */
repair_frag(vacrelstats, onerel, &vacuum_pages, &fraged_pages,
! nindexes, Irel);
vac_close_indexes(nindexes, Irel, NoLock);
}
else
--- 1202,1208 ----
{
/* Try to shrink heap */
repair_frag(vacrelstats, onerel, &vacuum_pages, &fraged_pages,
! nindexes, Irel, OldestXmin);
vac_close_indexes(nindexes, Irel, NoLock);
}
else
***************
*** 1180,1186 ****
/* update statistics in pg_class */
vac_update_relstats(RelationGetRelid(onerel), vacrelstats->rel_pages,
! vacrelstats->rel_tuples, vacrelstats->hasindex);
/* report results to the stats collector, too */
pgstat_report_vacuum(RelationGetRelid(onerel), onerel->rd_rel->relisshared,
--- 1220,1227 ----
/* update statistics in pg_class */
vac_update_relstats(RelationGetRelid(onerel), vacrelstats->rel_pages,
! vacrelstats->rel_tuples, vacrelstats->hasindex,
! vacrelstats->minxid, OldestXmin);
/* report results to the stats collector, too */
pgstat_report_vacuum(RelationGetRelid(onerel), onerel->rd_rel->relisshared,
***************
*** 1196,1209 ****
* deleted tuples), constructs fraged_pages (list of pages with free
* space that tuples could be moved into), and calculates statistics
* on the number of live tuples in the heap.
*/
static void
scan_heap(VRelStats *vacrelstats, Relation onerel,
! VacPageList vacuum_pages, VacPageList fraged_pages)
{
BlockNumber nblocks,
blkno;
- HeapTupleData tuple;
char *relname;
VacPage vacpage;
BlockNumber empty_pages,
--- 1237,1253 ----
* deleted tuples), constructs fraged_pages (list of pages with free
* space that tuples could be moved into), and calculates statistics
* on the number of live tuples in the heap.
+ *
+ * It also updates the minimum Xid found anywhere on the table in
+ * vacrelstats->minxid, for later storing it in pg_class.relminxid.
*/
static void
scan_heap(VRelStats *vacrelstats, Relation onerel,
! VacPageList vacuum_pages, VacPageList fraged_pages,
! TransactionId FreezeLimit, TransactionId OldestXmin)
{
BlockNumber nblocks,
blkno;
char *relname;
VacPage vacpage;
BlockNumber empty_pages,
***************
*** 1317,1322 ****
--- 1361,1367 ----
{
ItemId itemid = PageGetItemId(page, offnum);
bool tupgone = false;
+ HeapTupleData tuple;
/*
* Collect un-used items too - it's possible to have indexes
***************
*** 1452,1463 ****
--- 1497,1519 ----
}
else
{
+ TransactionId min;
+
num_tuples += 1;
notup = false;
if (tuple.t_len < min_tlen)
min_tlen = tuple.t_len;
if (tuple.t_len > max_tlen)
max_tlen = tuple.t_len;
+
+ /*
+ * If the tuple is alive, we consider it for the "minxid"
+ * calculations.
+ */
+ min = vactuple_get_minxid(&tuple);
+ if (TransactionIdIsValid(min) &&
+ TransactionIdPrecedes(min, vacrelstats->minxid))
+ vacrelstats->minxid = min;
}
} /* scan along page */
***************
*** 1583,1588 ****
--- 1639,1701 ----
pg_rusage_show(&ru0))));
}
+ /*
+ * vactuple_get_minxid
+ *
+ * Get the minimum relevant Xid for a tuple, not considering FrozenXid.
+ * Return InvalidXid if none (i.e., xmin=FrozenXid, xmax=InvalidXid).
+ * This is for the purpose of calculating pg_class.relminxid for a table
+ * we're vacuuming.
+ */
+ TransactionId
+ vactuple_get_minxid(HeapTuple tuple)
+ {
+ TransactionId min = InvalidTransactionId;
+
+ /*
+ * Initialize calculations with Xmin. NB -- may be FrozenXid and
+ * we don't want that one.
+ */
+ if (TransactionIdIsNormal(HeapTupleHeaderGetXmin(tuple->t_data)))
+ min = HeapTupleHeaderGetXmin(tuple->t_data);
+
+ /*
+ * If Xmax is not marked INVALID, we assume it's valid without making
+ * further checks on it --- it must be recently obsoleted or still running,
+ * else HeapTupleSatisfiesVacuum would have deemed it removable.
+ */
+ if (!(tuple->t_data->t_infomask | HEAP_XMAX_INVALID))
+ {
+ TransactionId xmax = HeapTupleHeaderGetXmax(tuple->t_data);
+
+ /* If xmax is a plain Xid, consider it by itself */
+ if (!(tuple->t_data->t_infomask | HEAP_XMAX_IS_MULTI))
+ {
+ if (!TransactionIdIsValid(min) ||
+ (TransactionIdIsNormal(xmax) &&
+ TransactionIdPrecedes(xmax, min)))
+ min = xmax;
+ }
+ else
+ {
+ /* If it's a MultiXactId, consider each of its members */
+ TransactionId *members;
+ int nmembers,
+ membno;
+
+ nmembers = GetMultiXactIdMembers(xmax, &members);
+
+ for (membno = 0; membno < nmembers; membno++)
+ {
+ if (!TransactionIdIsValid(min) ||
+ TransactionIdPrecedes(members[membno], min))
+ min = members[membno];
+ }
+ }
+ }
+
+ return min;
+ }
/*
* repair_frag() -- try to repair relation's fragmentation
***************
*** 1597,1603 ****
static void
repair_frag(VRelStats *vacrelstats, Relation onerel,
VacPageList vacuum_pages, VacPageList fraged_pages,
! int nindexes, Relation *Irel)
{
TransactionId myXID = GetCurrentTransactionId();
Buffer dst_buffer = InvalidBuffer;
--- 1710,1716 ----
static void
repair_frag(VRelStats *vacrelstats, Relation onerel,
VacPageList vacuum_pages, VacPageList fraged_pages,
! int nindexes, Relation *Irel, TransactionId OldestXmin)
{
TransactionId myXID = GetCurrentTransactionId();
Buffer dst_buffer = InvalidBuffer;
***************
*** 2940,2946 ****
/* now update statistics in pg_class */
vac_update_relstats(RelationGetRelid(indrel),
stats->num_pages, stats->num_index_tuples,
! false);
ereport(elevel,
(errmsg("index \"%s\" now contains %.0f row versions in %u pages",
--- 3053,3059 ----
/* now update statistics in pg_class */
vac_update_relstats(RelationGetRelid(indrel),
stats->num_pages, stats->num_index_tuples,
! false, InvalidTransactionId, InvalidTransactionId);
ereport(elevel,
(errmsg("index \"%s\" now contains %.0f row versions in %u pages",
***************
*** 3009,3015 ****
/* now update statistics in pg_class */
vac_update_relstats(RelationGetRelid(indrel),
stats->num_pages, stats->num_index_tuples,
! false);
ereport(elevel,
(errmsg("index \"%s\" now contains %.0f row versions in %u pages",
--- 3122,3128 ----
/* now update statistics in pg_class */
vac_update_relstats(RelationGetRelid(indrel),
stats->num_pages, stats->num_index_tuples,
! false, InvalidTransactionId, InvalidTransactionId);
ereport(elevel,
(errmsg("index \"%s\" now contains %.0f row versions in %u pages",
Index: src/backend/commands/vacuumlazy.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/commands/vacuumlazy.c,v
retrieving revision 1.70
diff -c -r1.70 vacuumlazy.c
*** src/backend/commands/vacuumlazy.c 2 May 2006 22:25:10 -0000 1.70
--- src/backend/commands/vacuumlazy.c 28 Jun 2006 21:43:37 -0000
***************
*** 42,47 ****
--- 42,48 ----
#include "access/genam.h"
#include "access/heapam.h"
#include "access/xlog.h"
+ #include "catalog/catalog.h"
#include "commands/vacuum.h"
#include "miscadmin.h"
#include "pgstat.h"
***************
*** 72,77 ****
--- 73,79 ----
double tuples_deleted;
BlockNumber nonempty_pages; /* actually, last nonempty page + 1 */
Size threshold; /* minimum interesting free space */
+ TransactionId minxid; /* minimum Xid present anywhere in table */
/* List of TIDs of tuples we intend to delete */
/* NB: this list is ordered by TID address */
int num_dead_tuples; /* current # of entries */
***************
*** 88,100 ****
static int elevel = -1;
- static TransactionId OldestXmin;
- static TransactionId FreezeLimit;
-
/* non-export function prototypes */
static void lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats,
! Relation *Irel, int nindexes);
static void lazy_vacuum_heap(Relation onerel, LVRelStats *vacrelstats);
static void lazy_vacuum_index(Relation indrel,
IndexBulkDeleteResult **stats,
--- 90,100 ----
static int elevel = -1;
/* non-export function prototypes */
static void lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats,
! Relation *Irel, int nindexes, TransactionId FreezeLimit,
! TransactionId OldestXmin);
static void lazy_vacuum_heap(Relation onerel, LVRelStats *vacrelstats);
static void lazy_vacuum_index(Relation indrel,
IndexBulkDeleteResult **stats,
***************
*** 104,112 ****
LVRelStats *vacrelstats);
static int lazy_vacuum_page(Relation onerel, BlockNumber blkno, Buffer buffer,
int tupindex, LVRelStats *vacrelstats);
! static void lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats);
static BlockNumber count_nondeletable_pages(Relation onerel,
! LVRelStats *vacrelstats);
static void lazy_space_alloc(LVRelStats *vacrelstats, BlockNumber relblocks);
static void lazy_record_dead_tuple(LVRelStats *vacrelstats,
ItemPointer itemptr);
--- 104,113 ----
LVRelStats *vacrelstats);
static int lazy_vacuum_page(Relation onerel, BlockNumber blkno, Buffer buffer,
int tupindex, LVRelStats *vacrelstats);
! static void lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats,
! TransactionId OldestXmin);
static BlockNumber count_nondeletable_pages(Relation onerel,
! LVRelStats *vacrelstats, TransactionId OldestXmin);
static void lazy_space_alloc(LVRelStats *vacrelstats, BlockNumber relblocks);
static void lazy_record_dead_tuple(LVRelStats *vacrelstats,
ItemPointer itemptr);
***************
*** 122,128 ****
* lazy_vacuum_rel() -- perform LAZY VACUUM for one heap relation
*
* This routine vacuums a single heap, cleans out its indexes, and
! * updates its num_pages and num_tuples statistics.
*
* At entry, we have already established a transaction and opened
* and locked the relation.
--- 123,130 ----
* lazy_vacuum_rel() -- perform LAZY VACUUM for one heap relation
*
* This routine vacuums a single heap, cleans out its indexes, and
! * updates its relpages and reltuples statistics, as well as the
! * relminxid and relvacuumxid information.
*
* At entry, we have already established a transaction and opened
* and locked the relation.
***************
*** 135,140 ****
--- 137,144 ----
int nindexes;
bool hasindex;
BlockNumber possibly_freeable;
+ TransactionId OldestXmin,
+ FreezeLimit;
if (vacstmt->verbose)
elevel = INFO;
***************
*** 150,161 ****
/* XXX should we scale it up or down? Adjust vacuum.c too, if so */
vacrelstats->threshold = GetAvgFSMRequestSize(&onerel->rd_node);
/* Open all indexes of the relation */
vac_open_indexes(onerel, ShareUpdateExclusiveLock, &nindexes, &Irel);
hasindex = (nindexes > 0);
/* Do the vacuuming */
! lazy_scan_heap(onerel, vacrelstats, Irel, nindexes);
/* Done with indexes */
vac_close_indexes(nindexes, Irel, NoLock);
--- 154,176 ----
/* XXX should we scale it up or down? Adjust vacuum.c too, if so */
vacrelstats->threshold = GetAvgFSMRequestSize(&onerel->rd_node);
+ /*
+ * Set initial minimum Xid, which will be updated if a smaller Xid is found
+ * in the relation by lazy_scan_heap.
+ *
+ * We use RecentXmin here (the minimum Xid that belongs to a transaction
+ * that is still open according to our snapshot), because it is the
+ * earliest transaction that could concurrently insert new tuples in the
+ * table.
+ */
+ vacrelstats->minxid = RecentXmin;
+
/* Open all indexes of the relation */
vac_open_indexes(onerel, ShareUpdateExclusiveLock, &nindexes, &Irel);
hasindex = (nindexes > 0);
/* Do the vacuuming */
! lazy_scan_heap(onerel, vacrelstats, Irel, nindexes, FreezeLimit, OldestXmin);
/* Done with indexes */
vac_close_indexes(nindexes, Irel, NoLock);
***************
*** 169,184 ****
possibly_freeable = vacrelstats->rel_pages - vacrelstats->nonempty_pages;
if (possibly_freeable >= REL_TRUNCATE_MINIMUM ||
possibly_freeable >= vacrelstats->rel_pages / REL_TRUNCATE_FRACTION)
! lazy_truncate_heap(onerel, vacrelstats);
/* Update shared free space map with final free space info */
lazy_update_fsm(onerel, vacrelstats);
/* Update statistics in pg_class */
! vac_update_relstats(RelationGetRelid(onerel),
! vacrelstats->rel_pages,
! vacrelstats->rel_tuples,
! hasindex);
/* report results to the stats collector, too */
pgstat_report_vacuum(RelationGetRelid(onerel), onerel->rd_rel->relisshared,
--- 184,198 ----
possibly_freeable = vacrelstats->rel_pages - vacrelstats->nonempty_pages;
if (possibly_freeable >= REL_TRUNCATE_MINIMUM ||
possibly_freeable >= vacrelstats->rel_pages / REL_TRUNCATE_FRACTION)
! lazy_truncate_heap(onerel, vacrelstats, OldestXmin);
/* Update shared free space map with final free space info */
lazy_update_fsm(onerel, vacrelstats);
/* Update statistics in pg_class */
! vac_update_relstats(RelationGetRelid(onerel), vacrelstats->rel_pages,
! vacrelstats->rel_tuples, hasindex,
! vacrelstats->minxid, OldestXmin);
/* report results to the stats collector, too */
pgstat_report_vacuum(RelationGetRelid(onerel), onerel->rd_rel->relisshared,
***************
*** 193,202 ****
* and pages with free space, and calculates statistics on the number
* of live tuples in the heap. When done, or when we run low on space
* for dead-tuple TIDs, invoke vacuuming of indexes and heap.
*/
static void
lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats,
! Relation *Irel, int nindexes)
{
BlockNumber nblocks,
blkno;
--- 207,220 ----
* and pages with free space, and calculates statistics on the number
* of live tuples in the heap. When done, or when we run low on space
* for dead-tuple TIDs, invoke vacuuming of indexes and heap.
+ *
+ * It also updates the minimum Xid found anywhere on the table in
+ * vacrelstats->minxid, for later storing it in pg_class.relminxid.
*/
static void
lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats,
! Relation *Irel, int nindexes, TransactionId FreezeLimit,
! TransactionId OldestXmin)
{
BlockNumber nblocks,
blkno;
***************
*** 406,413 ****
--- 424,442 ----
}
else
{
+ TransactionId min;
+
num_tuples += 1;
hastup = true;
+
+ /*
+ * If the tuple is alive, we consider it for the "minxid"
+ * calculations.
+ */
+ min = vactuple_get_minxid(&tuple);
+ if (TransactionIdIsValid(min) &&
+ TransactionIdPrecedes(min, vacrelstats->minxid))
+ vacrelstats->minxid = min;
}
} /* scan along page */
***************
*** 668,676 ****
/* now update statistics in pg_class */
vac_update_relstats(RelationGetRelid(indrel),
! stats->num_pages,
! stats->num_index_tuples,
! false);
ereport(elevel,
(errmsg("index \"%s\" now contains %.0f row versions in %u pages",
--- 697,704 ----
/* now update statistics in pg_class */
vac_update_relstats(RelationGetRelid(indrel),
! stats->num_pages, stats->num_index_tuples,
! false, InvalidTransactionId, InvalidTransactionId);
ereport(elevel,
(errmsg("index \"%s\" now contains %.0f row versions in %u pages",
***************
*** 691,697 ****
* lazy_truncate_heap - try to truncate off any empty pages at the end
*/
static void
! lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats)
{
BlockNumber old_rel_pages = vacrelstats->rel_pages;
BlockNumber new_rel_pages;
--- 719,726 ----
* lazy_truncate_heap - try to truncate off any empty pages at the end
*/
static void
! lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats,
! TransactionId OldestXmin)
{
BlockNumber old_rel_pages = vacrelstats->rel_pages;
BlockNumber new_rel_pages;
***************
*** 732,738 ****
* because other backends could have added tuples to these pages whilst we
* were vacuuming.
*/
! new_rel_pages = count_nondeletable_pages(onerel, vacrelstats);
if (new_rel_pages >= old_rel_pages)
{
--- 761,767 ----
* because other backends could have added tuples to these pages whilst we
* were vacuuming.
*/
! new_rel_pages = count_nondeletable_pages(onerel, vacrelstats, OldestXmin);
if (new_rel_pages >= old_rel_pages)
{
***************
*** 787,793 ****
* Returns number of nondeletable pages (last nonempty page + 1).
*/
static BlockNumber
! count_nondeletable_pages(Relation onerel, LVRelStats *vacrelstats)
{
BlockNumber blkno;
HeapTupleData tuple;
--- 816,823 ----
* Returns number of nondeletable pages (last nonempty page + 1).
*/
static BlockNumber
! count_nondeletable_pages(Relation onerel, LVRelStats *vacrelstats,
! TransactionId OldestXmin)
{
BlockNumber blkno;
HeapTupleData tuple;
Index: src/backend/libpq/hba.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/libpq/hba.c,v
retrieving revision 1.151
diff -c -r1.151 hba.c
*** src/backend/libpq/hba.c 6 Mar 2006 17:41:43 -0000 1.151
--- src/backend/libpq/hba.c 28 Jun 2006 18:02:59 -0000
***************
*** 1005,1011 ****
* dbname: gets database name (must be of size NAMEDATALEN bytes)
* dboid: gets database OID
* dbtablespace: gets database's default tablespace's OID
! * dbfrozenxid: gets database's frozen XID
* dbvacuumxid: gets database's vacuum XID
*
* This is not much related to the other functions in hba.c, but we put it
--- 1005,1011 ----
* dbname: gets database name (must be of size NAMEDATALEN bytes)
* dboid: gets database OID
* dbtablespace: gets database's default tablespace's OID
! * dbminxid: gets database's minimum XID
* dbvacuumxid: gets database's vacuum XID
*
* This is not much related to the other functions in hba.c, but we put it
***************
*** 1013,1019 ****
*/
bool
read_pg_database_line(FILE *fp, char *dbname, Oid *dboid,
! Oid *dbtablespace, TransactionId *dbfrozenxid,
TransactionId *dbvacuumxid)
{
char buf[MAX_TOKEN];
--- 1013,1019 ----
*/
bool
read_pg_database_line(FILE *fp, char *dbname, Oid *dboid,
! Oid *dbtablespace, TransactionId *dbminxid,
TransactionId *dbvacuumxid)
{
char buf[MAX_TOKEN];
***************
*** 1036,1042 ****
next_token(fp, buf, sizeof(buf));
if (!isdigit((unsigned char) buf[0]))
elog(FATAL, "bad data in flat pg_database file");
! *dbfrozenxid = atoxid(buf);
next_token(fp, buf, sizeof(buf));
if (!isdigit((unsigned char) buf[0]))
elog(FATAL, "bad data in flat pg_database file");
--- 1036,1042 ----
next_token(fp, buf, sizeof(buf));
if (!isdigit((unsigned char) buf[0]))
elog(FATAL, "bad data in flat pg_database file");
! *dbminxid = atoxid(buf);
next_token(fp, buf, sizeof(buf));
if (!isdigit((unsigned char) buf[0]))
elog(FATAL, "bad data in flat pg_database file");
Index: src/backend/postmaster/autovacuum.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/postmaster/autovacuum.c,v
retrieving revision 1.19
diff -c -r1.19 autovacuum.c
*** src/backend/postmaster/autovacuum.c 19 May 2006 15:15:37 -0000 1.19
--- src/backend/postmaster/autovacuum.c 28 Jun 2006 18:02:59 -0000
***************
*** 79,85 ****
{
Oid oid;
char *name;
! TransactionId frozenxid;
TransactionId vacuumxid;
PgStat_StatDBEntry *entry;
int32 age;
--- 79,85 ----
{
Oid oid;
char *name;
! TransactionId minxid;
TransactionId vacuumxid;
PgStat_StatDBEntry *entry;
int32 age;
***************
*** 349,355 ****
{
autovac_dbase *tmp = lfirst(cell);
bool this_whole_db;
! int32 freeze_age,
vacuum_age;
/*
--- 349,355 ----
{
autovac_dbase *tmp = lfirst(cell);
bool this_whole_db;
! int32 true_age,
vacuum_age;
/*
***************
*** 362,370 ****
* Unlike vacuum.c, we also look at vacuumxid. This is so that
* pg_clog can be kept trimmed to a reasonable size.
*/
! freeze_age = (int32) (nextXid - tmp->frozenxid);
vacuum_age = (int32) (nextXid - tmp->vacuumxid);
! tmp->age = Max(freeze_age, vacuum_age);
this_whole_db = (tmp->age >
(int32) ((MaxTransactionId >> 3) * 3 - 100000));
--- 362,370 ----
* Unlike vacuum.c, we also look at vacuumxid. This is so that
* pg_clog can be kept trimmed to a reasonable size.
*/
! true_age = (int32) (nextXid - tmp->minxid);
vacuum_age = (int32) (nextXid - tmp->vacuumxid);
! tmp->age = Max(true_age, vacuum_age);
this_whole_db = (tmp->age >
(int32) ((MaxTransactionId >> 3) * 3 - 100000));
***************
*** 455,461 ****
FILE *db_file;
Oid db_id;
Oid db_tablespace;
! TransactionId db_frozenxid;
TransactionId db_vacuumxid;
filename = database_getflatfilename();
--- 455,461 ----
FILE *db_file;
Oid db_id;
Oid db_tablespace;
! TransactionId db_minxid;
TransactionId db_vacuumxid;
filename = database_getflatfilename();
***************
*** 466,472 ****
errmsg("could not open file \"%s\": %m", filename)));
while (read_pg_database_line(db_file, thisname, &db_id,
! &db_tablespace, &db_frozenxid,
&db_vacuumxid))
{
autovac_dbase *db;
--- 466,472 ----
errmsg("could not open file \"%s\": %m", filename)));
while (read_pg_database_line(db_file, thisname, &db_id,
! &db_tablespace, &db_minxid,
&db_vacuumxid))
{
autovac_dbase *db;
***************
*** 475,481 ****
db->oid = db_id;
db->name = pstrdup(thisname);
! db->frozenxid = db_frozenxid;
db->vacuumxid = db_vacuumxid;
/* these get set later: */
db->entry = NULL;
--- 475,481 ----
db->oid = db_id;
db->name = pstrdup(thisname);
! db->minxid = db_minxid;
db->vacuumxid = db_vacuumxid;
/* these get set later: */
db->entry = NULL;
Index: src/backend/utils/init/flatfiles.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/utils/init/flatfiles.c,v
retrieving revision 1.18
diff -c -r1.18 flatfiles.c
*** src/backend/utils/init/flatfiles.c 4 May 2006 16:07:29 -0000 1.18
--- src/backend/utils/init/flatfiles.c 28 Jun 2006 18:02:59 -0000
***************
*** 163,169 ****
/*
* write_database_file: update the flat database file
*
! * A side effect is to determine the oldest database's datfrozenxid
* so we can set or update the XID wrap limit.
*/
static void
--- 163,169 ----
/*
* write_database_file: update the flat database file
*
! * A side effect is to determine the oldest database's datminxid
* so we can set or update the XID wrap limit.
*/
static void
***************
*** 177,183 ****
HeapScanDesc scan;
HeapTuple tuple;
NameData oldest_datname;
! TransactionId oldest_datfrozenxid = InvalidTransactionId;
/*
* Create a temporary filename to be renamed later. This prevents the
--- 177,183 ----
HeapScanDesc scan;
HeapTuple tuple;
NameData oldest_datname;
! TransactionId oldest_datminxid = InvalidTransactionId;
/*
* Create a temporary filename to be renamed later. This prevents the
***************
*** 208,234 ****
char *datname;
Oid datoid;
Oid dattablespace;
! TransactionId datfrozenxid,
datvacuumxid;
datname = NameStr(dbform->datname);
datoid = HeapTupleGetOid(tuple);
dattablespace = dbform->dattablespace;
! datfrozenxid = dbform->datfrozenxid;
datvacuumxid = dbform->datvacuumxid;
/*
! * Identify the oldest datfrozenxid, ignoring databases that are not
* connectable (we assume they are safely frozen). This must match
* the logic in vac_truncate_clog() in vacuum.c.
*/
if (dbform->datallowconn &&
! TransactionIdIsNormal(datfrozenxid))
{
! if (oldest_datfrozenxid == InvalidTransactionId ||
! TransactionIdPrecedes(datfrozenxid, oldest_datfrozenxid))
{
! oldest_datfrozenxid = datfrozenxid;
namestrcpy(&oldest_datname, datname);
}
}
--- 208,234 ----
char *datname;
Oid datoid;
Oid dattablespace;
! TransactionId datminxid,
datvacuumxid;
datname = NameStr(dbform->datname);
datoid = HeapTupleGetOid(tuple);
dattablespace = dbform->dattablespace;
! datminxid = dbform->datminxid;
datvacuumxid = dbform->datvacuumxid;
/*
! * Identify the oldest datminxid, ignoring databases that are not
* connectable (we assume they are safely frozen). This must match
* the logic in vac_truncate_clog() in vacuum.c.
*/
if (dbform->datallowconn &&
! TransactionIdIsNormal(datminxid))
{
! if (oldest_datminxid == InvalidTransactionId ||
! TransactionIdPrecedes(datminxid, oldest_datminxid))
{
! oldest_datminxid = datminxid;
namestrcpy(&oldest_datname, datname);
}
}
***************
*** 244,257 ****
}
/*
! * The file format is: "dbname" oid tablespace frozenxid vacuumxid
*
* The xids are not needed for backend startup, but are of use to
* autovacuum, and might also be helpful for forensic purposes.
*/
fputs_quote(datname, fp);
fprintf(fp, " %u %u %u %u\n",
! datoid, dattablespace, datfrozenxid, datvacuumxid);
}
heap_endscan(scan);
--- 244,257 ----
}
/*
! * The file format is: "dbname" oid tablespace minxid vacuumxid
*
* The xids are not needed for backend startup, but are of use to
* autovacuum, and might also be helpful for forensic purposes.
*/
fputs_quote(datname, fp);
fprintf(fp, " %u %u %u %u\n",
! datoid, dattablespace, datminxid, datvacuumxid);
}
heap_endscan(scan);
***************
*** 272,281 ****
tempname, filename)));
/*
! * Set the transaction ID wrap limit using the oldest datfrozenxid
*/
! if (oldest_datfrozenxid != InvalidTransactionId)
! SetTransactionIdLimit(oldest_datfrozenxid, &oldest_datname);
}
--- 272,281 ----
tempname, filename)));
/*
! * Set the transaction ID wrap limit using the oldest datminxid
*/
! if (oldest_datminxid != InvalidTransactionId)
! SetTransactionIdLimit(oldest_datminxid, &oldest_datname);
}
Index: src/include/access/transam.h
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/include/access/transam.h,v
retrieving revision 1.57
diff -c -r1.57 transam.h
*** src/include/access/transam.h 5 Mar 2006 15:58:53 -0000 1.57
--- src/include/access/transam.h 28 Jun 2006 21:49:51 -0000
***************
*** 23,28 ****
--- 23,29 ----
* always be considered valid.
*
* FirstNormalTransactionId is the first "normal" transaction id.
+ * Note: if you need to change it, you must change it in pg_class.h as well.
* ----------------
*/
#define InvalidTransactionId ((TransactionId) 0)
***************
*** 123,129 ****
/* in transam/varsup.c */
extern TransactionId GetNewTransactionId(bool isSubXact);
extern TransactionId ReadNewTransactionId(void);
! extern void SetTransactionIdLimit(TransactionId oldest_datfrozenxid,
Name oldest_datname);
extern Oid GetNewObjectId(void);
--- 124,130 ----
/* in transam/varsup.c */
extern TransactionId GetNewTransactionId(bool isSubXact);
extern TransactionId ReadNewTransactionId(void);
! extern void SetTransactionIdLimit(TransactionId oldest_datminxid,
Name oldest_datname);
extern Oid GetNewObjectId(void);
Index: src/include/catalog/pg_attribute.h
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/include/catalog/pg_attribute.h,v
retrieving revision 1.120
diff -c -r1.120 pg_attribute.h
*** src/include/catalog/pg_attribute.h 5 Mar 2006 15:58:54 -0000 1.120
--- src/include/catalog/pg_attribute.h 28 Jun 2006 18:02:59 -0000
***************
*** 404,410 ****
{ 1259, {"relhaspkey"}, 16, -1, 1, 22, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
{ 1259, {"relhasrules"}, 16, -1, 1, 23, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
{ 1259, {"relhassubclass"},16, -1, 1, 24, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
! { 1259, {"relacl"}, 1034, -1, -1, 25, 1, -1, -1, false, 'x', 'i', false, false, false, true, 0 }
DATA(insert ( 1259 relname 19 -1 NAMEDATALEN 1 0 -1 -1 f p i t f f t 0));
DATA(insert ( 1259 relnamespace 26 -1 4 2 0 -1 -1 t p i t f f t 0));
--- 404,412 ----
{ 1259, {"relhaspkey"}, 16, -1, 1, 22, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
{ 1259, {"relhasrules"}, 16, -1, 1, 23, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
{ 1259, {"relhassubclass"},16, -1, 1, 24, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
! { 1259, {"relminxid"}, 28, -1, 4, 25, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
! { 1259, {"relvacuumxid"}, 28, -1, 4, 26, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
! { 1259, {"relacl"}, 1034, -1, -1, 27, 1, -1, -1, false, 'x', 'i', false, false, false, true, 0 }
DATA(insert ( 1259 relname 19 -1 NAMEDATALEN 1 0 -1 -1 f p i t f f t 0));
DATA(insert ( 1259 relnamespace 26 -1 4 2 0 -1 -1 t p i t f f t 0));
***************
*** 430,436 ****
DATA(insert ( 1259 relhaspkey 16 -1 1 22 0 -1 -1 t p c t f f t 0));
DATA(insert ( 1259 relhasrules 16 -1 1 23 0 -1 -1 t p c t f f t 0));
DATA(insert ( 1259 relhassubclass 16 -1 1 24 0 -1 -1 t p c t f f t 0));
! DATA(insert ( 1259 relacl 1034 -1 -1 25 1 -1 -1 f x i f f f t 0));
DATA(insert ( 1259 ctid 27 0 6 -1 0 -1 -1 f p s t f f t 0));
DATA(insert ( 1259 oid 26 0 4 -2 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1259 xmin 28 0 4 -3 0 -1 -1 t p i t f f t 0));
--- 432,440 ----
DATA(insert ( 1259 relhaspkey 16 -1 1 22 0 -1 -1 t p c t f f t 0));
DATA(insert ( 1259 relhasrules 16 -1 1 23 0 -1 -1 t p c t f f t 0));
DATA(insert ( 1259 relhassubclass 16 -1 1 24 0 -1 -1 t p c t f f t 0));
! DATA(insert ( 1259 relminxid 28 -1 4 25 0 -1 -1 t p i t f f t 0));
! DATA(insert ( 1259 relvacuumxid 28 -1 4 26 0 -1 -1 t p i t f f t 0));
! DATA(insert ( 1259 relacl 1034 -1 -1 27 1 -1 -1 f x i f f f t 0));
DATA(insert ( 1259 ctid 27 0 6 -1 0 -1 -1 f p s t f f t 0));
DATA(insert ( 1259 oid 26 0 4 -2 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1259 xmin 28 0 4 -3 0 -1 -1 t p i t f f t 0));
Index: src/include/catalog/pg_class.h
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/include/catalog/pg_class.h,v
retrieving revision 1.92
diff -c -r1.92 pg_class.h
*** src/include/catalog/pg_class.h 28 May 2006 02:27:08 -0000 1.92
--- src/include/catalog/pg_class.h 28 Jun 2006 21:49:26 -0000
***************
*** 74,79 ****
--- 74,81 ----
bool relhaspkey; /* has PRIMARY KEY index */
bool relhasrules; /* has associated rules */
bool relhassubclass; /* has derived classes */
+ TransactionId relminxid; /* minimum Xid present in table */
+ TransactionId relvacuumxid; /* Xid used as last vacuum OldestXmin */
/*
* relacl may or may not be present, see note above!
***************
*** 83,89 ****
/* Size of fixed part of pg_class tuples, not counting relacl or padding */
#define CLASS_TUPLE_SIZE \
! (offsetof(FormData_pg_class,relhassubclass) + sizeof(bool))
/* ----------------
* Form_pg_class corresponds to a pointer to a tuple with
--- 85,91 ----
/* Size of fixed part of pg_class tuples, not counting relacl or padding */
#define CLASS_TUPLE_SIZE \
! (offsetof(FormData_pg_class,relvacuumxid) + sizeof(TransactionId))
/* ----------------
* Form_pg_class corresponds to a pointer to a tuple with
***************
*** 103,110 ****
* relacl field. This is a kluge.
* ----------------
*/
! #define Natts_pg_class_fixed 24
! #define Natts_pg_class 25
#define Anum_pg_class_relname 1
#define Anum_pg_class_relnamespace 2
#define Anum_pg_class_reltype 3
--- 105,112 ----
* relacl field. This is a kluge.
* ----------------
*/
! #define Natts_pg_class_fixed 26
! #define Natts_pg_class 27
#define Anum_pg_class_relname 1
#define Anum_pg_class_relnamespace 2
#define Anum_pg_class_reltype 3
***************
*** 129,135 ****
#define Anum_pg_class_relhaspkey 22
#define Anum_pg_class_relhasrules 23
#define Anum_pg_class_relhassubclass 24
! #define Anum_pg_class_relacl 25
/* ----------------
* initial contents of pg_class
--- 131,139 ----
#define Anum_pg_class_relhaspkey 22
#define Anum_pg_class_relhasrules 23
#define Anum_pg_class_relhassubclass 24
! #define Anum_pg_class_relminxid 25
! #define Anum_pg_class_relvacuumxid 26
! #define Anum_pg_class_relacl 27
/* ----------------
* initial contents of pg_class
***************
*** 139,151 ****
* ----------------
*/
! DATA(insert OID = 1247 ( pg_type PGNSP 71 PGUID 0 1247 0 0 0 0 0 f f r 23 0 0 0 0 0 t f f f _null_ ));
DESCR("");
! DATA(insert OID = 1249 ( pg_attribute PGNSP 75 PGUID 0 1249 0 0 0 0 0 f f r 17 0 0 0 0 0 f f f f _null_ ));
DESCR("");
! DATA(insert OID = 1255 ( pg_proc PGNSP 81 PGUID 0 1255 0 0 0 0 0 f f r 18 0 0 0 0 0 t f f f _null_ ));
DESCR("");
! DATA(insert OID = 1259 ( pg_class PGNSP 83 PGUID 0 1259 0 0 0 0 0 f f r 25 0 0 0 0 0 t f f f _null_ ));
DESCR("");
#define RELKIND_INDEX 'i' /* secondary index */
--- 143,156 ----
* ----------------
*/
! /* Note: the "3" here stands for FirstNormalTransactionId */
! DATA(insert OID = 1247 ( pg_type PGNSP 71 PGUID 0 1247 0 0 0 0 0 f f r 23 0 0 0 0 0 t f f f 3 3 _null_ ));
DESCR("");
! DATA(insert OID = 1249 ( pg_attribute PGNSP 75 PGUID 0 1249 0 0 0 0 0 f f r 17 0 0 0 0 0 f f f f 3 3 _null_ ));
DESCR("");
! DATA(insert OID = 1255 ( pg_proc PGNSP 81 PGUID 0 1255 0 0 0 0 0 f f r 18 0 0 0 0 0 t f f f 3 3 _null_ ));
DESCR("");
! DATA(insert OID = 1259 ( pg_class PGNSP 83 PGUID 0 1259 0 0 0 0 0 f f r 27 0 0 0 0 0 t f f f 3 3 _null_ ));
DESCR("");
#define RELKIND_INDEX 'i' /* secondary index */
Index: src/include/catalog/pg_database.h
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/include/catalog/pg_database.h,v
retrieving revision 1.40
diff -c -r1.40 pg_database.h
*** src/include/catalog/pg_database.h 5 Mar 2006 15:58:54 -0000 1.40
--- src/include/catalog/pg_database.h 28 Jun 2006 21:33:43 -0000
***************
*** 43,49 ****
int4 datconnlimit; /* max connections allowed (-1=no limit) */
Oid datlastsysoid; /* highest OID to consider a system OID */
TransactionId datvacuumxid; /* all XIDs before this are vacuumed */
! TransactionId datfrozenxid; /* all XIDs before this are frozen */
Oid dattablespace; /* default table space for this DB */
text datconfig[1]; /* database-specific GUC (VAR LENGTH) */
aclitem datacl[1]; /* access permissions (VAR LENGTH) */
--- 43,49 ----
int4 datconnlimit; /* max connections allowed (-1=no limit) */
Oid datlastsysoid; /* highest OID to consider a system OID */
TransactionId datvacuumxid; /* all XIDs before this are vacuumed */
! TransactionId datminxid; /* minimum XID present anywhere in the DB */
Oid dattablespace; /* default table space for this DB */
text datconfig[1]; /* database-specific GUC (VAR LENGTH) */
aclitem datacl[1]; /* access permissions (VAR LENGTH) */
***************
*** 69,75 ****
#define Anum_pg_database_datconnlimit 6
#define Anum_pg_database_datlastsysoid 7
#define Anum_pg_database_datvacuumxid 8
! #define Anum_pg_database_datfrozenxid 9
#define Anum_pg_database_dattablespace 10
#define Anum_pg_database_datconfig 11
#define Anum_pg_database_datacl 12
--- 69,75 ----
#define Anum_pg_database_datconnlimit 6
#define Anum_pg_database_datlastsysoid 7
#define Anum_pg_database_datvacuumxid 8
! #define Anum_pg_database_datminxid 9
#define Anum_pg_database_dattablespace 10
#define Anum_pg_database_datconfig 11
#define Anum_pg_database_datacl 12
Index: src/include/commands/vacuum.h
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/include/commands/vacuum.h,v
retrieving revision 1.63
diff -c -r1.63 vacuum.h
*** src/include/commands/vacuum.h 5 Mar 2006 15:58:55 -0000 1.63
--- src/include/commands/vacuum.h 28 Jun 2006 21:28:14 -0000
***************
*** 114,128 ****
extern void vac_open_indexes(Relation relation, LOCKMODE lockmode,
int *nindexes, Relation **Irel);
extern void vac_close_indexes(int nindexes, Relation *Irel, LOCKMODE lockmode);
! extern void vac_update_relstats(Oid relid,
! BlockNumber num_pages,
! double num_tuples,
! bool hasindex);
extern void vacuum_set_xid_limits(VacuumStmt *vacstmt, bool sharedRel,
TransactionId *oldestXmin,
TransactionId *freezeLimit);
extern bool vac_is_partial_index(Relation indrel);
extern void vacuum_delay_point(void);
/* in commands/vacuumlazy.c */
extern void lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt);
--- 114,128 ----
extern void vac_open_indexes(Relation relation, LOCKMODE lockmode,
int *nindexes, Relation **Irel);
extern void vac_close_indexes(int nindexes, Relation *Irel, LOCKMODE lockmode);
! extern void vac_update_relstats(Oid relid, BlockNumber num_pages,
! double num_tuples, bool hasindex,
! TransactionId minxid, TransactionId vacuumxid);
extern void vacuum_set_xid_limits(VacuumStmt *vacstmt, bool sharedRel,
TransactionId *oldestXmin,
TransactionId *freezeLimit);
extern bool vac_is_partial_index(Relation indrel);
extern void vacuum_delay_point(void);
+ extern TransactionId vactuple_get_minxid(HeapTuple tuple);
/* in commands/vacuumlazy.c */
extern void lazy_vacuum_rel(Relation onerel, VacuumStmt *vacstmt);
Index: src/include/libpq/hba.h
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/include/libpq/hba.h,v
retrieving revision 1.42
diff -c -r1.42 hba.h
*** src/include/libpq/hba.h 6 Mar 2006 17:41:44 -0000 1.42
--- src/include/libpq/hba.h 28 Jun 2006 18:02:59 -0000
***************
*** 40,46 ****
extern int hba_getauthmethod(hbaPort *port);
extern int authident(hbaPort *port);
extern bool read_pg_database_line(FILE *fp, char *dbname, Oid *dboid,
! Oid *dbtablespace, TransactionId *dbfrozenxid,
TransactionId *dbvacuumxid);
#endif /* HBA_H */
--- 40,46 ----
extern int hba_getauthmethod(hbaPort *port);
extern int authident(hbaPort *port);
extern bool read_pg_database_line(FILE *fp, char *dbname, Oid *dboid,
! Oid *dbtablespace, TransactionId *dbminxid,
TransactionId *dbvacuumxid);
#endif /* HBA_H */