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More infrastructure for btree compaction project. Tree-traversal code

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now knows what to do upon hitting a dead page (in theory anyway, it's
untested...).  Add a post-VACUUM-cleanup entry point for index AMs, to
provide a place for dead-page scavenging to happen.
Also, fix oversight that broke btpo_prev links in temporary indexes.
initdb forced due to additions in pg_am.
This commit is contained in:
Tom Lane
2003-02-22 00:45:05 +00:00
parent 4fff132d1b
commit 799bc58dc7
18 changed files with 709 additions and 345 deletions
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34
src/backend/access/index/indexam.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/index/indexam.c,v 1.63 2003/01/08 19:41:40 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/index/indexam.c,v 1.64 2003/02/22 00:45:03 tgl Exp $
*
* INTERFACE ROUTINES
* index_open - open an index relation by relation OID
@@ -23,6 +23,7 @@
* index_restrpos - restore a scan position
* index_getnext - get the next tuple from a scan
* index_bulk_delete - bulk deletion of index tuples
* index_vacuum_cleanup - post-deletion cleanup of an index
* index_cost_estimator - fetch amcostestimate procedure OID
* index_getprocid - get a support procedure OID
*
@@ -579,6 +580,37 @@ index_bulk_delete(Relation indexRelation,
return result;
}
/* ----------------
* index_vacuum_cleanup - do post-deletion cleanup of an index
*
* return value is an optional palloc'd struct of statistics
* ----------------
*/
IndexBulkDeleteResult *
index_vacuum_cleanup(Relation indexRelation,
IndexVacuumCleanupInfo *info,
IndexBulkDeleteResult *stats)
{
RegProcedure procedure;
IndexBulkDeleteResult *result;
RELATION_CHECKS;
/* It's okay for an index AM not to have a vacuumcleanup procedure */
if (!RegProcedureIsValid(indexRelation->rd_am->amvacuumcleanup))
return stats;
GET_REL_PROCEDURE(vacuum_cleanup, amvacuumcleanup);
result = (IndexBulkDeleteResult *)
DatumGetPointer(OidFunctionCall3(procedure,
PointerGetDatum(indexRelation),
PointerGetDatum((Pointer) info),
PointerGetDatum((Pointer) stats)));
return result;
}
/* ----------------
* index_cost_estimator
*