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free space information is stored in a dedicated FSM relation fork, with each relation (except for hash indexes; they don't use FSM). This eliminates the max_fsm_relations and max_fsm_pages GUC options; remove any trace of them from the backend, initdb, and documentation. Rewrite contrib/pg_freespacemap to match the new FSM implementation. Also introduce a new variant of the get_raw_page(regclass, int4, int4) function in contrib/pageinspect that let's you to return pages from any relation fork, and a new fsm_page_contents() function to inspect the new FSM pages.
36 lines
810 B
C
36 lines
810 B
C
/*
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* rmgr.h
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*
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* Resource managers definition
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*
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* $PostgreSQL: pgsql/src/include/access/rmgr.h,v 1.18 2008/09/30 10:52:13 heikki Exp $
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*/
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#ifndef RMGR_H
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#define RMGR_H
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typedef uint8 RmgrId;
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/*
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* Built-in resource managers
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*
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* Note: RM_MAX_ID could be as much as 255 without breaking the XLOG file
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* format, but we keep it small to minimize the size of RmgrTable[].
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*/
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#define RM_XLOG_ID 0
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#define RM_XACT_ID 1
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#define RM_SMGR_ID 2
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#define RM_CLOG_ID 3
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#define RM_DBASE_ID 4
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#define RM_TBLSPC_ID 5
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#define RM_MULTIXACT_ID 6
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#define RM_FREESPACE_ID 7
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#define RM_HEAP2_ID 9
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#define RM_HEAP_ID 10
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#define RM_BTREE_ID 11
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#define RM_HASH_ID 12
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#define RM_GIN_ID 13
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#define RM_GIST_ID 14
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#define RM_SEQ_ID 15
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#define RM_MAX_ID RM_SEQ_ID
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#endif /* RMGR_H */
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