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15c121b3ed
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.
108 lines
2.4 KiB
MySQL
108 lines
2.4 KiB
MySQL
/* $PostgreSQL: pgsql/contrib/pageinspect/pageinspect.sql.in,v 1.5 2008/09/30 10:52:09 heikki Exp $ */
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-- Adjust this setting to control where the objects get created.
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SET search_path = public;
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--
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-- get_raw_page()
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--
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CREATE OR REPLACE FUNCTION get_raw_page(text, int4, int4)
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RETURNS bytea
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AS 'MODULE_PATHNAME', 'get_raw_page'
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LANGUAGE C STRICT;
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CREATE OR REPLACE FUNCTION get_raw_page(text, int4)
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RETURNS bytea
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AS $$ SELECT get_raw_page($1, 0, $2); $$
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LANGUAGE SQL STRICT;
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--
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-- page_header()
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--
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CREATE OR REPLACE FUNCTION page_header(IN page bytea,
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OUT lsn text,
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OUT tli smallint,
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OUT flags smallint,
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OUT lower smallint,
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OUT upper smallint,
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OUT special smallint,
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OUT pagesize smallint,
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OUT version smallint,
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OUT prune_xid xid)
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AS 'MODULE_PATHNAME', 'page_header'
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LANGUAGE C STRICT;
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--
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-- heap_page_items()
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--
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CREATE OR REPLACE FUNCTION heap_page_items(IN page bytea,
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OUT lp smallint,
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OUT lp_off smallint,
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OUT lp_flags smallint,
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OUT lp_len smallint,
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OUT t_xmin xid,
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OUT t_xmax xid,
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OUT t_field3 int4,
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OUT t_ctid tid,
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OUT t_infomask2 smallint,
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OUT t_infomask smallint,
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OUT t_hoff smallint,
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OUT t_bits text,
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OUT t_oid oid)
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RETURNS SETOF record
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AS 'MODULE_PATHNAME', 'heap_page_items'
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LANGUAGE C STRICT;
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--
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-- bt_metap()
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--
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CREATE OR REPLACE FUNCTION bt_metap(IN relname text,
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OUT magic int4,
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OUT version int4,
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OUT root int4,
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OUT level int4,
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OUT fastroot int4,
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OUT fastlevel int4)
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AS 'MODULE_PATHNAME', 'bt_metap'
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LANGUAGE C STRICT;
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--
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-- bt_page_stats()
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--
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CREATE OR REPLACE FUNCTION bt_page_stats(IN relname text, IN blkno int4,
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OUT blkno int4,
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OUT type "char",
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OUT live_items int4,
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OUT dead_items int4,
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OUT avg_item_size int4,
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OUT page_size int4,
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OUT free_size int4,
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OUT btpo_prev int4,
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OUT btpo_next int4,
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OUT btpo int4,
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OUT btpo_flags int4)
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AS 'MODULE_PATHNAME', 'bt_page_stats'
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LANGUAGE C STRICT;
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--
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-- bt_page_items()
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--
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CREATE OR REPLACE FUNCTION bt_page_items(IN relname text, IN blkno int4,
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OUT itemoffset smallint,
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OUT ctid tid,
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OUT itemlen smallint,
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OUT nulls bool,
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OUT vars bool,
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OUT data text)
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RETURNS SETOF record
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AS 'MODULE_PATHNAME', 'bt_page_items'
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LANGUAGE C STRICT;
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--
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-- fsm_page_contents()
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--
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CREATE OR REPLACE FUNCTION fsm_page_contents(IN page bytea)
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RETURNS text
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AS 'MODULE_PATHNAME', 'fsm_page_contents'
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LANGUAGE C STRICT;
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