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| author | Teodor Sigaev <teodor@sigaev.ru> | 2018-03-30 14:23:17 +0300 |
|---|---|---|
| committer | Teodor Sigaev <teodor@sigaev.ru> | 2018-03-30 14:23:17 +0300 |
| commit | 43d1ed60fdd96027f044e152176c0d45cd6bf443 (patch) | |
| tree | b5efc150a6cfa4d5edbc5ecbc828850097d0201f /src/include | |
| parent | 019fa576ca8298ecb7b8ded6e0c857840b57a4ae (diff) | |
| download | postgresql-43d1ed60fdd96027f044e152176c0d45cd6bf443.tar.gz postgresql-43d1ed60fdd96027f044e152176c0d45cd6bf443.zip | |
Predicate locking in GIN index
Predicate locks are used on per page basis only if fastupdate = off, in
opposite case predicate lock on pending list will effectively lock whole index,
to reduce locking overhead, just lock a relation. Entry and posting trees are
essentially B-tree, so locks are acquired on leaf pages only.
Author: Shubham Barai with some editorization by me and Dmitry Ivanov
Review by: Alexander Korotkov, Dmitry Ivanov, Fedor Sigaev
Discussion: https://www.postgresql.org/message-id/flat/CALxAEPt5sWW+EwTaKUGFL5_XFcZ0MuGBcyJ70oqbWqr42YKR8Q@mail.gmail.com
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/access/gin_private.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/include/access/gin_private.h b/src/include/access/gin_private.h index a709596a7ae..d1df3033a6d 100644 --- a/src/include/access/gin_private.h +++ b/src/include/access/gin_private.h @@ -103,6 +103,8 @@ extern Datum *ginExtractEntries(GinState *ginstate, OffsetNumber attnum, extern OffsetNumber gintuple_get_attrnum(GinState *ginstate, IndexTuple tuple); extern Datum gintuple_get_key(GinState *ginstate, IndexTuple tuple, GinNullCategory *category); +extern void GinCheckForSerializableConflictIn(Relation relation, + HeapTuple tuple, Buffer buffer); /* gininsert.c */ extern IndexBuildResult *ginbuild(Relation heap, Relation index, @@ -217,7 +219,7 @@ extern ItemPointer GinDataLeafPageGetItems(Page page, int *nitems, ItemPointerDa extern int GinDataLeafPageGetItemsToTbm(Page page, TIDBitmap *tbm); extern BlockNumber createPostingTree(Relation index, ItemPointerData *items, uint32 nitems, - GinStatsData *buildStats); + GinStatsData *buildStats, Buffer entrybuffer); extern void GinDataPageAddPostingItem(Page page, PostingItem *data, OffsetNumber offset); extern void GinPageDeletePostingItem(Page page, OffsetNumber offset); extern void ginInsertItemPointers(Relation index, BlockNumber rootBlkno, |