Allow specifying initial and maximum segment sizes for DSA.
Previously, the DSA segment size always started with 1MB and grew up
to DSA_MAX_SEGMENT_SIZE. It was inconvenient in certain scenarios,
such as when the caller desired a soft constraint on the total DSA
segment size, limiting it to less than 1MB.
This commit introduces the capability to specify the initial and
maximum DSA segment sizes when creating a DSA area, providing more
flexibility and control over memory usage.
Reviewed-by: John Naylor, Tomas Vondra
Discussion: https://postgr.es/m/CAD21AoAYGGC1ePjVX0H%2Bpp9rH%3D9vuPK19nNOiu12NprdV5TVJA%40mail.gmail.com
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/bb952c8c8b13279eca039499249cb5dc60991603
Modified Files
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src/backend/utils/mmgr/dsa.c | 63 ++++++++++++++++++++------------------------
src/include/utils/dsa.h | 46 +++++++++++++++++++++++++++++---
2 files changed, 71 insertions(+), 38 deletions(-)
