pgsql: Enlarge bit-space for MemoryContextMethodID
| От | David Rowley |
|---|---|
| Тема | pgsql: Enlarge bit-space for MemoryContextMethodID |
| Дата | |
| Msg-id | E1rtQlT-000xzy-BY@gemulon.postgresql.org обсуждение исходный текст |
| Список | pgsql-committers |
Enlarge bit-space for MemoryContextMethodID Reserve 4 bits for MemoryContextMethodID rather than 3. 3 bits did technically allow a maximum of 8 memory context types, however, we've opted to reserve some bit patterns which left us with only 4 slots, all of which were used. Here we add another bit which frees up 8 slots for future memory context types. In passing, adjust the enum names in MemoryContextMethodID to make it more clear which ones can be used and which ones are reserved. Author: Matthias van de Meent, David Rowley Discussion: https://postgr.es/m/CAApHDvqGSpCU95TmM=Bp=6xjL_nLys4zdZOpfNyWBk97Xrdj2w@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/0ba8b75e7ea6b7b3090c81239ebcb866772a624b Modified Files -------------- src/backend/utils/mmgr/README | 21 ++++++++++------ src/backend/utils/mmgr/mcxt.c | 43 ++++++++++++++++---------------- src/include/utils/memutils_internal.h | 18 +++++++++---- src/include/utils/memutils_memorychunk.h | 32 ++++++++++++++++++------ 4 files changed, 72 insertions(+), 42 deletions(-)
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