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82 lines
3.1 KiB
C
82 lines
3.1 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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#include "postgres_fe.h"
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#include <unistd.h>
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#include <sys/time.h>
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#include "libpq-fe.h"
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#include "lib/dllist.h"
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#define AUTOVACUUM_DEBUG 1
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#define BASETHRESHOLD 100
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#define SCALINGFACTOR 2
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#define SLEEPVALUE 1
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#define SLEEPSCALINGFACTOR 0
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#define UPDATE_INTERVAL 2
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#define TABLE_STATS_ALL "select a.relfilenode,a.relname,a.relnamespace,a.relpages,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.relfilenode=b.relid"
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#define TABLE_STATS_USER "select a.relfilenode,a.relname,a.relnamespace,a.relpages,a.reltuples,b.schemaname,b.n_tup_ins,b.n_tup_upd,b.n_tup_del from pg_class a, pg_stat_user_tables b where a.relfilenode=b.relid"
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#define FRONTEND
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struct cmdargs{
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int tuple_base_threshold,sleep_base_value,debug;
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float tuple_scaling_factor,sleep_scaling_factor;
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char *user, *password, *host, *port;
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}; typedef struct cmdargs cmd_args;
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/* define cmd_args as global so we can get to them everywhere */
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cmd_args *args;
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struct tableinfo{
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char *schema_name,*table_name;
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int insertThreshold,deleteThreshold;
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int relfilenode,reltuples,relpages;
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long InsertsAtLastAnalyze; /* equal to: inserts + updates as of the last analyze or initial values at startup */
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long DeletesAtLastVacuum; /* equal to: deletes + updates as of the last vacuum or initial values at startup */
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}; typedef struct tableinfo tbl_info;
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/* Might need to add a time value for last time the whold database was vacuumed.
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I think we need to guarantee this happens approx every 1Million TX's */
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struct dbinfo{
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int oid,age;
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int insertThreshold,deleteThreshold; /* Use these as defaults for table thresholds */
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PGconn *conn;
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char *dbname,*username,*password;
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Dllist *table_list;
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}; typedef struct dbinfo db_info;
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/* Functions for dealing with command line arguements */
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static cmd_args *get_cmd_args(int argc,char *argv[]);
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static void print_cmd_args(void);
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static void free_cmd_args(void);
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/* Functions for managing database lists */
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static Dllist *init_db_list(void);
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static db_info *init_dbinfo(char *dbname,int oid,int age);
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static void update_db_list(Dllist *db_list);
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static void remove_db_from_list(Dlelem *db_to_remove);
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static void print_db_info(db_info *dbi,int print_table_list);
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static void print_db_list(Dllist *db_list,int print_table_lists);
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static int xid_wraparound_check(db_info *dbi);
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static void free_db_list(Dllist *db_list);
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/* Functions for managing table lists */
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static tbl_info *init_table_info(PGresult *conn, int row);
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static void update_table_list(db_info *dbi);
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static void remove_table_from_list(Dlelem *tbl_to_remove);
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static void print_table_list(Dllist *tbl_node);
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static void print_table_info(tbl_info *tbl);
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static void update_table_thresholds(db_info *dbi,tbl_info *tbl);
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static void free_tbl_list(Dllist *tbl_list);
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/* A few database helper functions */
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static int check_stats_enabled(db_info *dbi);
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static PGconn *db_connect(db_info *dbi);
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static void db_disconnect(db_info *dbi);
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static PGresult *send_query(const char *query,db_info *dbi);
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static char *query_table_stats(db_info *dbi);
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