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Modify BufferGetPage() to prepare for "snapshot too old" feature

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This patch is a no-op patch which is intended to reduce the chances
of failures of omission once the functional part of the "snapshot
too old" patch goes in.  It adds parameters for snapshot, relation,
and an enum to specify whether the snapshot age check needs to be
done for the page at this point.  This initial patch passes NULL
for the first two new parameters and BGP_NO_SNAPSHOT_TEST for the
third.  The follow-on patch will change the places where the test
needs to be made.
This commit is contained in:
Kevin Grittner
2016-04-08 14:30:10 -05:00
parent 689f9a0588
commit 8b65cf4c5e
65 changed files with 735 additions and 522 deletions
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29
src/backend/access/gin/ginvacuum.c
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@@ -87,7 +87,8 @@ ginVacuumItemPointers(GinVacuumState *gvs, ItemPointerData *items,
static void
xlogVacuumPage(Relation index, Buffer buffer)
{
Page page = BufferGetPage(buffer);
Page page = BufferGetPage(buffer, NULL, NULL,
BGP_NO_SNAPSHOT_TEST);
XLogRecPtr recptr;
/* This is only used for entry tree leaf pages. */
@@ -118,7 +119,7 @@ ginVacuumPostingTreeLeaves(GinVacuumState *gvs, BlockNumber blkno, bool isRoot,
buffer = ReadBufferExtended(gvs->index, MAIN_FORKNUM, blkno,
RBM_NORMAL, gvs->strategy);
page = BufferGetPage(buffer);
page = BufferGetPage(buffer, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
/*
* We should be sure that we don't concurrent with inserts, insert process
@@ -212,14 +213,14 @@ ginDeletePage(GinVacuumState *gvs, BlockNumber deleteBlkno, BlockNumber leftBlkn
START_CRIT_SECTION();
/* Unlink the page by changing left sibling's rightlink */
page = BufferGetPage(dBuffer);
page = BufferGetPage(dBuffer, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
rightlink = GinPageGetOpaque(page)->rightlink;
page = BufferGetPage(lBuffer);
page = BufferGetPage(lBuffer, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
GinPageGetOpaque(page)->rightlink = rightlink;
/* Delete downlink from parent */
parentPage = BufferGetPage(pBuffer);
parentPage = BufferGetPage(pBuffer, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
#ifdef USE_ASSERT_CHECKING
do
{
@@ -230,7 +231,7 @@ ginDeletePage(GinVacuumState *gvs, BlockNumber deleteBlkno, BlockNumber leftBlkn
#endif
GinPageDeletePostingItem(parentPage, myoff);
page = BufferGetPage(dBuffer);
page = BufferGetPage(dBuffer, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
/*
* we shouldn't change rightlink field to save workability of running
@@ -268,7 +269,8 @@ ginDeletePage(GinVacuumState *gvs, BlockNumber deleteBlkno, BlockNumber leftBlkn
recptr = XLogInsert(RM_GIN_ID, XLOG_GIN_DELETE_PAGE);
PageSetLSN(page, recptr);
PageSetLSN(parentPage, recptr);
PageSetLSN(BufferGetPage(lBuffer), recptr);
PageSetLSN(BufferGetPage(lBuffer, NULL, NULL,
BGP_NO_SNAPSHOT_TEST), recptr);
}
if (!isParentRoot)
@@ -324,7 +326,7 @@ ginScanToDelete(GinVacuumState *gvs, BlockNumber blkno, bool isRoot,
buffer = ReadBufferExtended(gvs->index, MAIN_FORKNUM, blkno,
RBM_NORMAL, gvs->strategy);
page = BufferGetPage(buffer);
page = BufferGetPage(buffer, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
Assert(GinPageIsData(page));
@@ -407,7 +409,8 @@ ginVacuumPostingTree(GinVacuumState *gvs, BlockNumber rootBlkno)
static Page
ginVacuumEntryPage(GinVacuumState *gvs, Buffer buffer, BlockNumber *roots, uint32 *nroot)
{
Page origpage = BufferGetPage(buffer),
Page origpage = BufferGetPage(buffer, NULL, NULL,
BGP_NO_SNAPSHOT_TEST),
tmppage;
OffsetNumber i,
maxoff = PageGetMaxOffsetNumber(origpage);
@@ -554,7 +557,8 @@ ginbulkdelete(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
/* find leaf page */
for (;;)
{
Page page = BufferGetPage(buffer);
Page page = BufferGetPage(buffer, NULL, NULL,
BGP_NO_SNAPSHOT_TEST);
IndexTuple itup;
LockBuffer(buffer, GIN_SHARE);
@@ -589,7 +593,8 @@ ginbulkdelete(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
for (;;)
{
Page page = BufferGetPage(buffer);
Page page = BufferGetPage(buffer, NULL, NULL,
BGP_NO_SNAPSHOT_TEST);
Page resPage;
uint32 i;
@@ -703,7 +708,7 @@ ginvacuumcleanup(IndexVacuumInfo *info, IndexBulkDeleteResult *stats)
buffer = ReadBufferExtended(index, MAIN_FORKNUM, blkno,
RBM_NORMAL, info->strategy);
LockBuffer(buffer, GIN_SHARE);
page = (Page) BufferGetPage(buffer);
page = BufferGetPage(buffer, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
if (PageIsNew(page) || GinPageIsDeleted(page))
{