database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-20 15:22:23 +03:00
Code Activity

pageinspect: Support hash indexes.

Browse Source 
Patch by Jesper Pedersen and Ashutosh Sharma, with some error handling
improvements by me.  Tests from Peter Eisentraut.  Reviewed by Álvaro
Herrera, Michael Paquier, Jesper Pedersen, Jeff Janes, Peter
Eisentraut, Amit Kapila, Mithun Cy, and me.

Discussion: http://postgr.es/m/e2ac6c58-b93f-9dd9-f4e6-d6d30add7fdf@redhat.com
This commit is contained in:
Robert Haas
2017-02-02 14:12:58 -05:00
parent acd73ad1a1
commit 08bf6e5295
9 changed files with 995 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/backend/access/hash/hashovfl.c
View File

@ -52,10 +52,12 @@ bitno_to_blkno(HashMetaPage metap, uint32 ovflbitnum)
}
/*
* _hash_ovflblkno_to_bitno
*
* Convert overflow page block number to bit number for free-page bitmap.
*/
static uint32
blkno_to_bitno(HashMetaPage metap, BlockNumber ovflblkno)
uint32
_hash_ovflblkno_to_bitno(HashMetaPage metap, BlockNumber ovflblkno)
{
uint32 splitnum = metap->hashm_ovflpoint;
uint32 i;
@ -485,7 +487,7 @@ _hash_freeovflpage(Relation rel, Buffer ovflbuf, Buffer wbuf,
metap = HashPageGetMeta(BufferGetPage(metabuf));
/* Identify which bit to set */
ovflbitno = blkno_to_bitno(metap, ovflblkno);
ovflbitno = _hash_ovflblkno_to_bitno(metap, ovflblkno);
bitmappage = ovflbitno >> BMPG_SHIFT(metap);
bitmapbit = ovflbitno & BMPG_MASK(metap);

4
src/include/access/hash.h
View File

@ -58,6 +58,9 @@ typedef uint32 Bucket;
#define LH_BUCKET_BEING_SPLIT (1 << 5)
#define LH_BUCKET_NEEDS_SPLIT_CLEANUP (1 << 6)
#define LH_PAGE_TYPE \
(LH_OVERFLOW_PAGE|LH_BUCKET_PAGE|LH_BITMAP_PAGE|LH_META_PAGE)
typedef struct HashPageOpaqueData
{
BlockNumber hasho_prevblkno; /* previous ovfl (or bucket) blkno */
@ -299,6 +302,7 @@ extern void _hash_squeezebucket(Relation rel,
Bucket bucket, BlockNumber bucket_blkno,
Buffer bucket_buf,
BufferAccessStrategy bstrategy);
extern uint32 _hash_ovflblkno_to_bitno(HashMetaPage metap, BlockNumber ovflblkno);
/* hashpage.c */
extern Buffer _hash_getbuf(Relation rel, BlockNumber blkno,