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Commit813b456

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Add page id to bloom index
Added to ensure that bloom index pages can be distinguished from other pagesby pg_filedump. Because there wasn't any public/production versions before,it doesn't pay attention to any compatibility issues.Per notice from Tom Lane
1 parente7bcde8 commit813b456

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2 files changed

+18
-2
lines changed

2 files changed

+18
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lines changed

‎contrib/bloom/bloom.h

Lines changed: 17 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -31,8 +31,13 @@
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/* Opaque for bloom pages */
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typedefstructBloomPageOpaqueData
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{
34-
OffsetNumbermaxoff;
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uint16flags;
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OffsetNumbermaxoff;/* number of index tuples on page */
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uint16flags;/* see bit definitions below */
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uint16unused;/* placeholder to force maxaligning of size
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* of BloomPageOpaqueData and to place
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* bloom_page_id exactly at the end of page
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*/
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uint16bloom_page_id;/* for identification of BLOOM indexes */
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}BloomPageOpaqueData;
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typedefBloomPageOpaqueData*BloomPageOpaque;
@@ -41,6 +46,16 @@ typedef BloomPageOpaqueData *BloomPageOpaque;
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#defineBLOOM_META(1<<0)
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#defineBLOOM_DELETED(2<<0)
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/*
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* The page ID is for the convenience of pg_filedump and similar utilities,
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* which otherwise would have a hard time telling pages of different index
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* types apart. It should be the last 2 bytes on the page. This is more or
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* less "free" due to alignment considerations.
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*
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* See comments above GinPageOpaqueData.
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*/
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#defineBLOOM_PAGE_ID0xFF83
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/* Macros for accessing bloom page structures */
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#defineBloomPageGetOpaque(page) ((BloomPageOpaque) PageGetSpecialPointer(page))
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#defineBloomPageGetMaxOffset(page) (BloomPageGetOpaque(page)->maxoff)

‎contrib/bloom/blutils.c

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -359,6 +359,7 @@ BloomInitPage(Page page, uint16 flags)
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opaque=BloomPageGetOpaque(page);
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memset(opaque,0,sizeof(BloomPageOpaqueData));
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opaque->flags=flags;
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opaque->bloom_page_id=BLOOM_PAGE_ID;
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}
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/*

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