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New WAL version - CRC and data blocks backup.

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This commit is contained in:
Vadim B. Mikheev
2000-12-28 13:00:29 +00:00
parent c996c7f573
commit 7ceeeb662f
18 changed files with 1203 additions and 1202 deletions
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51
src/backend/commands/vacuum.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.179 2000/12/22 23:12:05 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.180 2000/12/28 13:00:18 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -47,8 +47,10 @@
#include "utils/syscache.h"
#include "utils/temprel.h"
extern XLogRecPtr log_heap_clean(Relation reln, Buffer buffer);
extern XLogRecPtr log_heap_move(Relation reln,
ItemPointerData from, HeapTuple newtup);
Buffer oldbuf, ItemPointerData from,
Buffer newbuf, HeapTuple newtup);
static MemoryContext vac_context = NULL;
@@ -65,7 +67,7 @@ static void vacuum_rel(Oid relid);
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 nindices, Relation *Irel);
static void vacuum_heap(VRelStats *vacrelstats, Relation onerel, VacPageList vacpagelist);
static void vacuum_page(Page page, VacPage vacpage);
static void vacuum_page(Relation onerel, Buffer buffer, VacPage vacpage);
static void vacuum_index(VacPageList vacpagelist, Relation indrel, int num_tuples, int keep_tuples);
static void scan_index(Relation indrel, int num_tuples);
static void update_relstats(Oid relid, int num_pages, int num_tuples, bool hasindex, VRelStats *vacrelstats);
@@ -1070,7 +1072,9 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
if (last_vacuum_page->offsets_free > 0) /* there are dead tuples */
{ /* on this page - clean */
Assert(!isempty);
vacuum_page(page, last_vacuum_page);
LockBuffer(buf, BUFFER_LOCK_EXCLUSIVE);
vacuum_page(onerel, buf, last_vacuum_page);
LockBuffer(buf, BUFFER_LOCK_UNLOCK);
dowrite = true;
}
else
@@ -1469,7 +1473,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
int sv_offsets_used = destvacpage->offsets_used;
destvacpage->offsets_used = 0;
vacuum_page(ToPage, destvacpage);
vacuum_page(onerel, cur_buffer, destvacpage);
destvacpage->offsets_used = sv_offsets_used;
}
@@ -1496,7 +1500,8 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
{
XLogRecPtr recptr =
log_heap_move(onerel, tuple.t_self, &newtup);
log_heap_move(onerel, Cbuf, tuple.t_self,
cur_buffer, &newtup);
if (Cbuf != cur_buffer)
{
@@ -1609,7 +1614,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
ToPage = BufferGetPage(cur_buffer);
/* if this page was not used before - clean it */
if (!PageIsEmpty(ToPage) && cur_page->offsets_used == 0)
vacuum_page(ToPage, cur_page);
vacuum_page(onerel, cur_buffer, cur_page);
}
else
LockBuffer(cur_buffer, BUFFER_LOCK_EXCLUSIVE);
@@ -1661,7 +1666,8 @@ failed to add item with len = %lu to page %u (free space %lu, nusd %u, noff %u)"
{
XLogRecPtr recptr =
log_heap_move(onerel, tuple.t_self, &newtup);
log_heap_move(onerel, buf, tuple.t_self,
cur_buffer, &newtup);
PageSetLSN(page, recptr);
PageSetSUI(page, ThisStartUpID);
@@ -1810,11 +1816,12 @@ failed to add item with len = %lu to page %u (free space %lu, nusd %u, noff %u)"
{
Assert((*curpage)->blkno < (BlockNumber) blkno);
buf = ReadBuffer(onerel, (*curpage)->blkno);
LockBuffer(buf, BUFFER_LOCK_EXCLUSIVE);
page = BufferGetPage(buf);
if ((*curpage)->offsets_used == 0) /* this page was not used */
{
if (!PageIsEmpty(page))
vacuum_page(page, *curpage);
vacuum_page(onerel, buf, *curpage);
}
else
/* this page was used */
@@ -1848,6 +1855,7 @@ failed to add item with len = %lu to page %u (free space %lu, nusd %u, noff %u)"
Assert((*curpage)->offsets_used == num_tuples);
checked_moved += num_tuples;
}
LockBuffer(buf, BUFFER_LOCK_UNLOCK);
WriteBuffer(buf);
}
Assert(num_moved == checked_moved);
@@ -1891,6 +1899,8 @@ failed to add item with len = %lu to page %u (free space %lu, nusd %u, noff %u)"
vacpage->offsets_free > 0)
{
buf = ReadBuffer(onerel, vacpage->blkno);
LockBuffer(buf, BUFFER_LOCK_EXCLUSIVE);
START_CRIT_CODE;
page = BufferGetPage(buf);
num_tuples = 0;
for (offnum = FirstOffsetNumber;
@@ -1919,6 +1929,13 @@ failed to add item with len = %lu to page %u (free space %lu, nusd %u, noff %u)"
}
Assert(vacpage->offsets_free == num_tuples);
PageRepairFragmentation(page);
{
XLogRecPtr recptr = log_heap_clean(onerel, buf);
PageSetLSN(page, recptr);
PageSetSUI(page, ThisStartUpID);
}
END_CRIT_CODE;
LockBuffer(buf, BUFFER_LOCK_UNLOCK);
WriteBuffer(buf);
}
@@ -1969,7 +1986,6 @@ static void
vacuum_heap(VRelStats *vacrelstats, Relation onerel, VacPageList vacuum_pages)
{
Buffer buf;
Page page;
VacPage *vacpage;
int nblocks;
int i;
@@ -1983,8 +1999,9 @@ vacuum_heap(VRelStats *vacrelstats, Relation onerel, VacPageList vacuum_pages)
if ((*vacpage)->offsets_free > 0)
{
buf = ReadBuffer(onerel, (*vacpage)->blkno);
page = BufferGetPage(buf);
vacuum_page(page, *vacpage);
LockBuffer(buf, BUFFER_LOCK_EXCLUSIVE);
vacuum_page(onerel, buf, *vacpage);
LockBuffer(buf, BUFFER_LOCK_UNLOCK);
WriteBuffer(buf);
}
}
@@ -2020,20 +2037,28 @@ vacuum_heap(VRelStats *vacrelstats, Relation onerel, VacPageList vacuum_pages)
* and repair its fragmentation.
*/
static void
vacuum_page(Page page, VacPage vacpage)
vacuum_page(Relation onerel, Buffer buffer, VacPage vacpage)
{
Page page = BufferGetPage(buffer);
ItemId itemid;
int i;
/* There shouldn't be any tuples moved onto the page yet! */
Assert(vacpage->offsets_used == 0);
START_CRIT_CODE;
for (i = 0; i < vacpage->offsets_free; i++)
{
itemid = &(((PageHeader) page)->pd_linp[vacpage->offsets[i] - 1]);
itemid->lp_flags &= ~LP_USED;
}
PageRepairFragmentation(page);
{
XLogRecPtr recptr = log_heap_clean(onerel, buffer);
PageSetLSN(page, recptr);
PageSetSUI(page, ThisStartUpID);
}
END_CRIT_CODE;
}