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120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/* pg_autovacuum.h
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* Header file for pg_autovacuum.c
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* (c) 2003 Matthew T. O'Connor
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*
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* $PostgreSQL: pgsql/contrib/pg_autovacuum/pg_autovacuum.h,v 1.13 2004/11/17 16:54:15 tgl Exp $
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*/
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#ifndef _PG_AUTOVACUUM_H
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#define _PG_AUTOVACUUM_H
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#include "libpq-fe.h"
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#include "lib/dllist.h"
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#define AUTOVACUUM_DEBUG 0
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#define VACBASETHRESHOLD 1000
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#define VACSCALINGFACTOR 2
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#define SLEEPBASEVALUE 300
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#define SLEEPSCALINGFACTOR 2
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#define UPDATE_INTERVAL 2
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/* these two constants are used to tell update_table_stats what operation we just perfomred */
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#define VACUUM_ANALYZE 0
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#define ANALYZE_ONLY 1
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#define TABLE_STATS_QUERY "select a.oid,a.relname,a.relnamespace,a.relpages,a.relisshared,a.reltuples,b.schemaname,b.n_tup_ins,b.n_tup_upd,b.n_tup_del from pg_class a, pg_stat_all_tables b where a.oid=b.relid and a.relkind = 'r'"
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#define PAGES_QUERY "select oid,reltuples,relpages from pg_class where oid=%u"
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#define FROZENOID_QUERY "select oid,age(datfrozenxid) from pg_database where datname = 'template1'"
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#define FROZENOID_QUERY2 "select oid,datname,age(datfrozenxid) from pg_database where datname!='template0'"
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/* Log levels */
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enum
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{
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LVL_DEBUG = 1,
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LVL_INFO,
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LVL_WARNING,
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LVL_ERROR,
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LVL_EXTRA
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};
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/* define cmd_args stucture */
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typedef struct cmdargs
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{
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int vacuum_base_threshold,
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analyze_base_threshold,
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sleep_base_value,
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debug,
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/*
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* Cost-Based Vacuum Delay Settings for pg_autovacuum
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*/
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av_vacuum_cost_delay,
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av_vacuum_cost_page_hit,
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av_vacuum_cost_page_miss,
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av_vacuum_cost_page_dirty,
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av_vacuum_cost_limit,
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#ifndef WIN32
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daemonize;
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#else
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install_as_service,
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remove_as_service;
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#endif
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float vacuum_scaling_factor,
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analyze_scaling_factor,
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sleep_scaling_factor;
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char *user,
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*password,
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#ifdef WIN32
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*service_user,
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*service_password,
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#endif
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*host,
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*logfile,
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*port;
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} cmd_args;
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/*
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* Might need to add a time value for last time the whole database was
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* vacuumed. We need to guarantee this happens approx every 1Billion TX's
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*/
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typedef struct dbinfo
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{
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Oid oid;
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long age;
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long analyze_threshold,
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vacuum_threshold; /* Use these as defaults for table
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* thresholds */
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PGconn *conn;
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char *dbname,
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*username,
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*password;
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Dllist *table_list;
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} db_info;
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typedef struct tableinfo
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{
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char *schema_name,
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*table_name;
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float reltuples;
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int relisshared;
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Oid relid,
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relpages;
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long analyze_threshold,
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vacuum_threshold;
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long CountAtLastAnalyze; /* equal to: inserts + updates as
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* of the last analyze or initial
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* values at startup */
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long CountAtLastVacuum; /* equal to: deletes + updates as
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* of the last vacuum or initial
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* values at startup */
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long curr_analyze_count,
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curr_vacuum_count; /* Latest values from stats system */
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db_info *dbi; /* pointer to the database that this table
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* belongs to */
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} tbl_info;
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#endif /* _PG_AUTOVACUUM_H */
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