diff options
| author | Fujii Masao | 2020-03-30 03:15:26 +0000 |
|---|---|---|
| committer | Fujii Masao | 2020-03-30 03:15:26 +0000 |
| commit | 4a539a25ebfc48329fd656a95f3c1eb2cda38af3 (patch) | |
| tree | d4d503da2e6b3c1104961cb28ba0debef2f5b92a /src/include/executor | |
| parent | b61d161c146328ae6ba9ed937862d66e5c8b035a (diff) | |
Expose BufferUsageAccumDiff().
Previously pg_stat_statements calculated the difference of buffer counters
by its own code even while BufferUsageAccumDiff() had the same code.
This commit expose BufferUsageAccumDiff() and makes pg_stat_statements
use it for the calculation, in order to simply the code.
This change also would be useful for the upcoming patch for the planning
counters in pg_stat_statements because the patch will add one more code
for the calculation of difference of buffer counters and that can easily be
done by using BufferUsageAccumDiff().
Author: Julien Rouhaud
Reviewed-by: Fujii Masao
Discussion: https://postgr.es/m/[email protected]
Diffstat (limited to 'src/include/executor')
| -rw-r--r-- | src/include/executor/instrument.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/executor/instrument.h b/src/include/executor/instrument.h index f48d46aedef..3825a5ac1f3 100644 --- a/src/include/executor/instrument.h +++ b/src/include/executor/instrument.h @@ -81,5 +81,7 @@ extern void InstrAggNode(Instrumentation *dst, Instrumentation *add); extern void InstrStartParallelQuery(void); extern void InstrEndParallelQuery(BufferUsage *result); extern void InstrAccumParallelQuery(BufferUsage *result); +extern void BufferUsageAccumDiff(BufferUsage *dst, + const BufferUsage *add, const BufferUsage *sub); #endif /* INSTRUMENT_H */ |