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Generate pg_stat_get*() functions for tables using macros

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The same code pattern is repeated 17 times for int64 counters (0 for
missing entry) and 5 times for timestamps (NULL for missing entry) on
table entries.  This code is switched to use a macro for the basic code
instead, shaving a few hundred lines of originally-duplicated code.  The
function names remain the same, but some fields of PgStat_StatTabEntry
have to be renamed to cope with the new style.

Author: Bertrand Drouvot
Reviewed-by: Nathan Bossart
Discussion: https:/postgr.es/m/20221204173207.GA2669116@nathanxps13
This commit is contained in:
Michael Paquier
2022-12-06 10:46:35 +09:00
parent 941aa6a626
commit 83a1a1b566
5 changed files with 139 additions and 396 deletions
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20
src/include/pgstat.h
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@ -364,22 +364,22 @@ typedef struct PgStat_StatTabEntry
PgStat_Counter tuples_deleted;
PgStat_Counter tuples_hot_updated;
PgStat_Counter n_live_tuples;
PgStat_Counter n_dead_tuples;
PgStat_Counter changes_since_analyze;
PgStat_Counter inserts_since_vacuum;
PgStat_Counter live_tuples;
PgStat_Counter dead_tuples;
PgStat_Counter mod_since_analyze;
PgStat_Counter ins_since_vacuum;
PgStat_Counter blocks_fetched;
PgStat_Counter blocks_hit;
TimestampTz vacuum_timestamp; /* user initiated vacuum */
TimestampTz last_vacuum_time; /* user initiated vacuum */
PgStat_Counter vacuum_count;
TimestampTz autovac_vacuum_timestamp; /* autovacuum initiated */
PgStat_Counter autovac_vacuum_count;
TimestampTz analyze_timestamp; /* user initiated */
TimestampTz last_autovacuum_time; /* autovacuum initiated */
PgStat_Counter autovacuum_count;
TimestampTz last_analyze_time; /* user initiated */
PgStat_Counter analyze_count;
TimestampTz autovac_analyze_timestamp; /* autovacuum initiated */
PgStat_Counter autovac_analyze_count;
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
} PgStat_StatTabEntry;
typedef struct PgStat_WalStats