upstream/postgresql
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2026-02-21 00:40:20 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix pgindent comment breakage

Browse source
This commit is contained in:
Alvaro Herrera 2013-09-24 18:19:14 -03:00
parent ea0a8f0d22
commit 1e691588c1
1 changed files with 7 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/backend/access/heap/visibilitymap.c
View file

@ -352,11 +352,15 @@ visibilitymap_truncate(Relation rel, BlockNumber nheapblocks)
/* Clear out the unwanted bytes. */
MemSet(&map[truncByte + 1], 0, MAPSIZE - (truncByte + 1));
/*
/*----
* Mask out the unwanted bits of the last remaining byte.
*
* ((1 << 0) - 1) = 00000000 ((1 << 1) - 1) = 00000001 ... ((1 << 6) -
* 1) = 00111111 ((1 << 7) - 1) = 01111111
* ((1 << 0) - 1) = 00000000
* ((1 << 1) - 1) = 00000001
* ...
* ((1 << 6) - 1) = 00111111
* ((1 << 7) - 1) = 01111111
*----
*/
map[truncByte] &= (1 << truncBit) - 1;