database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-10-27 00:12:01 +03:00
Code Activity

More infrastructure for btree compaction project. Tree-traversal code

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

24
src/include/access/genam.h
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: genam.h,v 1.37 2002/09/04 20:31:36 momjian Exp $
* $Id: genam.h,v 1.38 2003/02/22 00:45:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -20,17 +20,32 @@
#include "nodes/primnodes.h"
/* Struct for statistics returned by bulk-delete operation */
/*
* Struct for statistics returned by bulk-delete operation
*
* This is now also passed to the index AM's vacuum-cleanup operation,
* if it has one, which can modify the results as needed. Note that
* an index AM could choose to have bulk-delete return a larger struct
* of which this is just the first field; this provides a way for bulk-delete
* to communicate additional private data to vacuum-cleanup.
*/
typedef struct IndexBulkDeleteResult
{
BlockNumber num_pages; /* pages remaining in index */
double num_index_tuples; /* tuples remaining */
double tuples_removed; /* # removed by bulk-delete operation */
double num_index_tuples; /* # remaining */
BlockNumber pages_free; /* # unused pages in index */
} IndexBulkDeleteResult;
/* Typedef for callback function to determine if a tuple is bulk-deletable */
typedef bool (*IndexBulkDeleteCallback) (ItemPointer itemptr, void *state);
/* Struct for additional arguments passed to vacuum-cleanup operation */
typedef struct IndexVacuumCleanupInfo
{
bool vacuum_full; /* VACUUM FULL (we have exclusive lock) */
int message_level; /* elog level for progress messages */
} IndexVacuumCleanupInfo;
/* Struct for heap-or-index scans of system tables */
typedef struct SysScanDescData
@@ -72,6 +87,9 @@ extern bool index_getnext_indexitem(IndexScanDesc scan,
extern IndexBulkDeleteResult *index_bulk_delete(Relation indexRelation,
IndexBulkDeleteCallback callback,
void *callback_state);
extern IndexBulkDeleteResult *index_vacuum_cleanup(Relation indexRelation,
IndexVacuumCleanupInfo *info,
IndexBulkDeleteResult *stats);
extern RegProcedure index_cost_estimator(Relation indexRelation);
extern RegProcedure index_getprocid(Relation irel, AttrNumber attnum,
uint16 procnum);