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pgstat: introduce pgstat_relation_should_count().

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A later commit will make the check more complicated than the
current (rel)->pgstat_info != NULL. It also just seems nicer to have a central
copy of the logic, even while still simple.

Author: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/20220303021600.hs34ghqcw6zcokdh@alap3.anarazel.de
This commit is contained in:
Andres Freund
2022-03-20 19:12:09 -07:00
parent 2d655a08d5
commit 8363102009
3 changed files with 28 additions and 27 deletions
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17
src/include/pgstat.h
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@ -1104,41 +1104,44 @@ extern PgStat_BackendFunctionEntry *find_funcstat_entry(Oid func_id);
extern void pgstat_initstats(Relation rel);
#define pgstat_relation_should_count(rel) \
(likely((rel)->pgstat_info != NULL))
/* nontransactional event counts are simple enough to inline */
#define pgstat_count_heap_scan(rel) \
do { \
if ((rel)->pgstat_info != NULL) \
if (pgstat_relation_should_count(rel)) \
(rel)->pgstat_info->t_counts.t_numscans++; \
} while (0)
#define pgstat_count_heap_getnext(rel) \
do { \
if ((rel)->pgstat_info != NULL) \
if (pgstat_relation_should_count(rel)) \
(rel)->pgstat_info->t_counts.t_tuples_returned++; \
} while (0)
#define pgstat_count_heap_fetch(rel) \
do { \
if ((rel)->pgstat_info != NULL) \
if (pgstat_relation_should_count(rel)) \
(rel)->pgstat_info->t_counts.t_tuples_fetched++; \
} while (0)
#define pgstat_count_index_scan(rel) \
do { \
if ((rel)->pgstat_info != NULL) \
if (pgstat_relation_should_count(rel)) \
(rel)->pgstat_info->t_counts.t_numscans++; \
} while (0)
#define pgstat_count_index_tuples(rel, n) \
do { \
if ((rel)->pgstat_info != NULL) \
if (pgstat_relation_should_count(rel)) \
(rel)->pgstat_info->t_counts.t_tuples_returned += (n); \
} while (0)
#define pgstat_count_buffer_read(rel) \
do { \
if ((rel)->pgstat_info != NULL) \
if (pgstat_relation_should_count(rel)) \
(rel)->pgstat_info->t_counts.t_blocks_fetched++; \
} while (0)
#define pgstat_count_buffer_hit(rel) \
do { \
if ((rel)->pgstat_info != NULL) \
if (pgstat_relation_should_count(rel)) \
(rel)->pgstat_info->t_counts.t_blocks_hit++; \
} while (0)
#define pgstat_count_buffer_read_time(n) \