database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-30 21:42:05 +03:00
Code Activity

Minor code-cleanliness improvements for btree.

Browse Source 
Make the btree page-flags test macros (P_ISLEAF and friends) return clean
boolean values, rather than values that might not fit in a bool.  Use them
in a few places that were randomly referencing the flag bits directly.

In passing, change access/nbtree/'s only direct use of BUFFER_LOCK_SHARE to
BT_READ.  (Some think we should go the other way, but as long as we have
BT_READ/BT_WRITE, let's use them consistently.)

Masahiko Sawada, reviewed by Doug Doole

Discussion: https://postgr.es/m/CAD21AoBmWPeN=WBB5Jvyz_Nt3rmW1ebUyAnk3ZbJP3RMXALJog@mail.gmail.com
This commit is contained in:
Tom Lane
2017-09-18 16:36:28 -04:00
parent 66917bfaa7
commit eb5c404b17
5 changed files with 16 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/include/access/nbtree.h
View File

@ -173,14 +173,14 @@ typedef struct BTMetaPageData
*/
#define P_LEFTMOST(opaque) ((opaque)->btpo_prev == P_NONE)
#define P_RIGHTMOST(opaque) ((opaque)->btpo_next == P_NONE)
#define P_ISLEAF(opaque) ((opaque)->btpo_flags & BTP_LEAF)
#define P_ISROOT(opaque) ((opaque)->btpo_flags & BTP_ROOT)
#define P_ISDELETED(opaque) ((opaque)->btpo_flags & BTP_DELETED)
#define P_ISMETA(opaque) ((opaque)->btpo_flags & BTP_META)
#define P_ISHALFDEAD(opaque) ((opaque)->btpo_flags & BTP_HALF_DEAD)
#define P_IGNORE(opaque) ((opaque)->btpo_flags & (BTP_DELETED|BTP_HALF_DEAD))
#define P_HAS_GARBAGE(opaque) ((opaque)->btpo_flags & BTP_HAS_GARBAGE)
#define P_INCOMPLETE_SPLIT(opaque) ((opaque)->btpo_flags & BTP_INCOMPLETE_SPLIT)
#define P_ISLEAF(opaque) (((opaque)->btpo_flags & BTP_LEAF) != 0)
#define P_ISROOT(opaque) (((opaque)->btpo_flags & BTP_ROOT) != 0)
#define P_ISDELETED(opaque) (((opaque)->btpo_flags & BTP_DELETED) != 0)
#define P_ISMETA(opaque) (((opaque)->btpo_flags & BTP_META) != 0)
#define P_ISHALFDEAD(opaque) (((opaque)->btpo_flags & BTP_HALF_DEAD) != 0)
#define P_IGNORE(opaque) (((opaque)->btpo_flags & (BTP_DELETED|BTP_HALF_DEAD)) != 0)
#define P_HAS_GARBAGE(opaque) (((opaque)->btpo_flags & BTP_HAS_GARBAGE) != 0)
#define P_INCOMPLETE_SPLIT(opaque) (((opaque)->btpo_flags & BTP_INCOMPLETE_SPLIT) != 0)
/*
* Lehman and Yao's algorithm requires a ``high key'' on every non-rightmost