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WAL misc

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This commit is contained in:
Vadim B. Mikheev
2000-10-24 09:56:23 +00:00
parent 4b70629b92
commit db2faa943a
7 changed files with 280 additions and 167 deletions
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76
src/backend/commands/vacuum.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.169 2000/10/22 19:49:43 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.170 2000/10/24 09:56:15 vadim Exp $
*
*-------------------------------------------------------------------------
@@ -47,6 +47,11 @@
#include <sys/resource.h>
#endif
#ifdef XLOG
#include "access/xlog.h"
XLogRecPtr log_heap_move(Relation reln,
ItemPointerData from, HeapTuple newtup);
#endif
static MemoryContext vac_context = NULL;
@@ -1401,11 +1406,23 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
{
VacPage destvacpage = vtmove[ti].vacpage;
/* Get tuple from chain */
/* Get page to move from */
tuple.t_self = vtmove[ti].tid;
Cbuf = ReadBuffer(onerel,
ItemPointerGetBlockNumber(&(tuple.t_self)));
/* Get page to move to */
cur_buffer = ReadBuffer(onerel, destvacpage->blkno);
LockBuffer(cur_buffer, BUFFER_LOCK_EXCLUSIVE);
if (cur_buffer != Cbuf)
LockBuffer(Cbuf, BUFFER_LOCK_EXCLUSIVE);
ToPage = BufferGetPage(cur_buffer);
Cpage = BufferGetPage(Cbuf);
/* NO ELOG(ERROR) TILL CHANGES ARE LOGGED */
Citemid = PageGetItemId(Cpage,
ItemPointerGetOffsetNumber(&(tuple.t_self)));
tuple.t_datamcxt = NULL;
@@ -1425,19 +1442,6 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
~(HEAP_XMIN_COMMITTED | HEAP_XMIN_INVALID | HEAP_MOVED_IN);
tuple.t_data->t_infomask |= HEAP_MOVED_OFF;
/* Get page to move to */
cur_buffer = ReadBuffer(onerel, destvacpage->blkno);
/*
* We should LockBuffer(cur_buffer) but don't, at the
* moment. This should be safe enough, since we have
* exclusive lock on the whole relation.
* If you'll do LockBuffer then UNLOCK it before
* index_insert: unique btree-s call heap_fetch to get
* t_infomask of inserted heap tuple !!!
*/
ToPage = BufferGetPage(cur_buffer);
/*
* If this page was not used before - clean it.
*
@@ -1480,7 +1484,7 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
InvalidOffsetNumber, LP_USED);
if (newoff == InvalidOffsetNumber)
{
elog(ERROR, "moving chain: failed to add item with len = %u to page %u",
elog(STOP, "moving chain: failed to add item with len = %u to page %u",
tuple_len, destvacpage->blkno);
}
newitemid = PageGetItemId(ToPage, newoff);
@@ -1488,6 +1492,22 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
newtup.t_datamcxt = NULL;
newtup.t_data = (HeapTupleHeader) PageGetItem(ToPage, newitemid);
ItemPointerSet(&(newtup.t_self), destvacpage->blkno, newoff);
#ifdef XLOG
{
XLogRecPtr recptr =
log_heap_move(onerel, tuple.t_self, &newtup);
if (Cbuf != cur_buffer)
{
PageSetLSN(Cpage, recptr);
PageSetSUI(Cpage, ThisStartUpID);
}
PageSetLSN(ToPage, recptr);
PageSetSUI(ToPage, ThisStartUpID);
}
#endif
if (((int) destvacpage->blkno) > last_move_dest_block)
last_move_dest_block = destvacpage->blkno;
@@ -1513,6 +1533,10 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
else
keep_tuples++;
LockBuffer(cur_buffer, BUFFER_LOCK_UNLOCK);
if (cur_buffer != Cbuf)
LockBuffer(Cbuf, BUFFER_LOCK_UNLOCK);
if (Irel != (Relation *) NULL)
{
/*
@@ -1581,11 +1605,16 @@ repair_frag(VRelStats *vacrelstats, Relation onerel,
cur_item = i;
cur_page = fraged_pages->pagedesc[cur_item];
cur_buffer = ReadBuffer(onerel, cur_page->blkno);
LockBuffer(cur_buffer, BUFFER_LOCK_EXCLUSIVE);
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);
}
else
LockBuffer(cur_buffer, BUFFER_LOCK_EXCLUSIVE);
LockBuffer(buf, BUFFER_LOCK_EXCLUSIVE);
/* copy tuple */
heap_copytuple_with_tuple(&tuple, &newtup);
@@ -1627,6 +1656,18 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
~(HEAP_XMIN_COMMITTED | HEAP_XMIN_INVALID | HEAP_MOVED_IN);
tuple.t_data->t_infomask |= HEAP_MOVED_OFF;
#ifdef XLOG
{
XLogRecPtr recptr =
log_heap_move(onerel, tuple.t_self, &newtup);
PageSetLSN(page, recptr);
PageSetSUI(page, ThisStartUpID);
PageSetLSN(ToPage, recptr);
PageSetSUI(ToPage, ThisStartUpID);
}
#endif
cur_page->offsets_used++;
num_moved++;
cur_page->free = ((PageHeader) ToPage)->pd_upper - ((PageHeader) ToPage)->pd_lower;
@@ -1635,6 +1676,9 @@ failed to add item with len = %u to page %u (free space %u, nusd %u, noff %u)",
vacpage->offsets[vacpage->offsets_free++] = offnum;
LockBuffer(cur_buffer, BUFFER_LOCK_UNLOCK);
LockBuffer(buf, BUFFER_LOCK_UNLOCK);
/* insert index' tuples if needed */
if (Irel != (Relation *) NULL)
{