diff options
| author | Fujii Masao <fujii@postgresql.org> | 2020-03-30 12:15:26 +0900 |
|---|---|---|
| committer | Fujii Masao <fujii@postgresql.org> | 2020-03-30 12:15:26 +0900 |
| commit | 4a539a25ebfc48329fd656a95f3c1eb2cda38af3 (patch) | |
| tree | d4d503da2e6b3c1104961cb28ba0debef2f5b92a /src | |
| parent | b61d161c146328ae6ba9ed937862d66e5c8b035a (diff) | |
| download | postgresql-4a539a25ebfc48329fd656a95f3c1eb2cda38af3.tar.gz postgresql-4a539a25ebfc48329fd656a95f3c1eb2cda38af3.zip | |
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/bdfee4e0-a304-2498-8da5-3cb52c0a193e@oss.nttdata.com
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/executor/instrument.c | 4 | ||||
| -rw-r--r-- | src/include/executor/instrument.h | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/src/backend/executor/instrument.c b/src/backend/executor/instrument.c index bc1d42bf649..042e10f96bc 100644 --- a/src/backend/executor/instrument.c +++ b/src/backend/executor/instrument.c @@ -21,8 +21,6 @@ BufferUsage pgBufferUsage; static BufferUsage save_pgBufferUsage; static void BufferUsageAdd(BufferUsage *dst, const BufferUsage *add); -static void BufferUsageAccumDiff(BufferUsage *dst, - const BufferUsage *add, const BufferUsage *sub); /* Allocate new instrumentation structure(s) */ @@ -203,7 +201,7 @@ BufferUsageAdd(BufferUsage *dst, const BufferUsage *add) } /* dst += add - sub */ -static void +void BufferUsageAccumDiff(BufferUsage *dst, const BufferUsage *add, const BufferUsage *sub) 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 */ |