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| author | Vadim B. Mikheev <vadim4o@yahoo.com> | 1999-05-01 15:04:46 +0000 |
|---|---|---|
| committer | Vadim B. Mikheev <vadim4o@yahoo.com> | 1999-05-01 15:04:46 +0000 |
| commit | 34a84addc7208ce6e37ae2afd8f3023f0f9340a5 (patch) | |
| tree | 1aa7ce968d203af6c3bbfad46cfb3ad86d669cfa /src | |
| parent | 099164039dae2fec176d7b605b128592ac4b02a3 (diff) | |
| download | postgresql-34a84addc7208ce6e37ae2afd8f3023f0f9340a5.tar.gz postgresql-34a84addc7208ce6e37ae2afd8f3023f0f9340a5.zip | |
Use page-level ExtendLock lock instead of table-level -
should be faster.
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/access/heap/hio.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/backend/access/heap/hio.c b/src/backend/access/heap/hio.c index f827f6e421f..3b4fa4af0bb 100644 --- a/src/backend/access/heap/hio.c +++ b/src/backend/access/heap/hio.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Id: hio.c,v 1.17 1999/02/13 23:14:24 momjian Exp $ + * $Id: hio.c,v 1.18 1999/05/01 15:04:46 vadim Exp $ * *------------------------------------------------------------------------- */ @@ -110,8 +110,15 @@ RelationPutHeapTupleAtEnd(Relation relation, HeapTuple tuple) ItemId itemId; Item item; + /* + * Actually, we lock _relation_ here, not page, but I believe + * that locking page is faster... Obviously, we could get rid + * of ExtendLock mode at all and use ExclusiveLock mode on + * page 0, as long as we use page-level locking for indices only, + * but we are in 6.5-beta currently... - vadim 05/01/99 + */ if (!relation->rd_myxactonly) - LockRelation(relation, ExtendLock); + LockPage(relation, 0, ExtendLock); /* * XXX This does an lseek - VERY expensive - but at the moment it is @@ -159,7 +166,7 @@ RelationPutHeapTupleAtEnd(Relation relation, HeapTuple tuple) } if (!relation->rd_myxactonly) - UnlockRelation(relation, ExtendLock); + UnlockPage(relation, 0, ExtendLock); offnum = PageAddItem((Page) pageHeader, (Item) tuple->t_data, tuple->t_len, InvalidOffsetNumber, LP_USED); |