database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-08 14:02:16 +03:00
Code Activity

Store the page number for the PENDING_BYTE page in the Pager object, rather

Browse Source 
than computing the page number every time it is needed, because it turns out
that number is needed quite frequently.  This saves a few hundred thousand
CPU cycles and a few bytes of code space.

FossilOrigin-Name: 5aa9c3eb45514d5eb7b32696d25a9aeb7dad485e1ea5adb833fac6d1f2105f1a
This commit is contained in:
drh
2022-02-23 17:00:44 +00:00
parent f2a777fa5d
commit 584bfcaeb6
5 changed files with 24 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/btreeInt.h
View File

@@ -598,7 +598,7 @@ struct BtCursor {
/*
** The database page the PENDING_BYTE occupies. This page is never used.
*/
# define PENDING_BYTE_PAGE(pBt) PAGER_MJ_PGNO(pBt)
#define PENDING_BYTE_PAGE(pBt) ((Pgno)((PENDING_BYTE/((pBt)->pageSize))+1))
/*
** These macros define the location of the pointer-map entry for a