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Code Issues Releases Wiki Activity

Change BitmapAdjustPrefetchIterator to accept BlockNumber 

BitmapAdjustPrefetchIterator() only used the blockno member of the
passed in TBMIterateResult to ensure that the prefetch iterator and
regular iterator stay in sync. Pass it the BlockNumber only, so that we
can move away from using the TBMIterateResult outside of table AM
specific code.

Author: Melanie Plageman
Reviewed-by: Tomas Vondra, Andres Freund, Heikki Linnakangas
Discussion: https://postgr.es/m/CAAKRu_ZwCwWFeL_H3ia26bP2e7HiKLWt0ZmGXPVwPO6uXq0vaA%40mail.gmail.com
This commit is contained in:
Tomas Vondra 2024-04-07 01:25:03 +02:00
parent 1fdb0ce9b1
commit 92641d8d65
1 changed files with 4 additions and 4 deletions
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8
src/backend/executor/nodeBitmapHeapscan.c
View File

@ -52,7 +52,7 @@
static TupleTableSlot *BitmapHeapNext(BitmapHeapScanState *node);
static inline void BitmapDoneInitializingSharedState(ParallelBitmapHeapState *pstate);
static inline void BitmapAdjustPrefetchIterator(BitmapHeapScanState *node,
TBMIterateResult *tbmres);
BlockNumber blockno);
static inline void BitmapAdjustPrefetchTarget(BitmapHeapScanState *node);
static inline void BitmapPrefetch(BitmapHeapScanState *node,
TableScanDesc scan);
@ -231,7 +231,7 @@ BitmapHeapNext(BitmapHeapScanState *node)
break;
}
BitmapAdjustPrefetchIterator(node, tbmres);
BitmapAdjustPrefetchIterator(node, tbmres->blockno);
valid_block = table_scan_bitmap_next_block(scan, tbmres);
@ -342,7 +342,7 @@ BitmapDoneInitializingSharedState(ParallelBitmapHeapState *pstate)
*/
static inline void
BitmapAdjustPrefetchIterator(BitmapHeapScanState *node,
TBMIterateResult *tbmres)
BlockNumber blockno)
{
#ifdef USE_PREFETCH
ParallelBitmapHeapState *pstate = node->pstate;
@ -361,7 +361,7 @@ BitmapAdjustPrefetchIterator(BitmapHeapScanState *node,
/* Do not let the prefetch iterator get behind the main one */
TBMIterateResult *tbmpre = tbm_iterate(prefetch_iterator);
if (tbmpre == NULL || tbmpre->blockno != tbmres->blockno)
if (tbmpre == NULL || tbmpre->blockno != blockno)
elog(ERROR, "prefetch and main iterators are out of sync");
}
return;