mirrors/sqlite
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Remove two lines of unnecessary code, for a very small performance increase

Browse Source 
and size decrease.

FossilOrigin-Name: 15824ccda0f110794a479b58fbf36082d8c383f34bae9dc0921d96547fb37869
This commit is contained in:
drh 2018-12-03 01:58:02 +00:00
parent 4a5cff73a7
commit de72d2a81a
3 changed files with 13 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
manifest
View File

@ -1,5 +1,5 @@
C Fix\sa\sparser\sbug\sin\sthe\suse\sof\sparentheses\saround\stable-valued\sfunctions.
D 2018-12-03T01:47:41.293
C Remove\stwo\slines\sof\sunnecessary\scode,\sfor\sa\svery\ssmall\sperformance\sincrease\nand\ssize\sdecrease.
D 2018-12-03T01:58:02.016
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F Makefile.in a050c8670ea0d7b37b2192306cbb50d392acd9902b84e9b56f3444d006f97a6c
@ -498,7 +498,7 @@ F src/pager.h 217921e81eb5fe455caa5cda96061959706bcdd29ddb57166198645ef7822ac3
F src/parse.y 5cf85c2b9dfac38ac4e2bf2776484705186ce2eda8631e65cc0b04bf566c1173
F src/pcache.c 696a01f1a6370c1b50a09c15972bc3bee3333f8fcd1f2da8e9a76b1b062c59ee
F src/pcache.h 4f87acd914cef5016fae3030343540d75f5b85a1877eed1a2a19b9f284248586
F src/pcache1.c bf9fcea656dce1cd2cca6b77a1d1d3552050d55a31c98bf0d9f405930a83bc95
F src/pcache1.c ad0ffc5b35b0280d045ac569d34d4b842e3e6a4a118f6396b320987a0957afcc
F src/pragma.c 4e056f042683b99c4ea0db395f68d051b1a95833ab40951c40d3ef7e1fee1354
F src/pragma.h fdd03d78a7497f74a3f652909f945328480089189526841ae829ce7313d98d13
F src/prepare.c f81f8d707e583192c28fea0b2e19385415b7d188123b23f49b038076408d7a69
@ -1779,7 +1779,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 5d933aa659eb7a13f9ab44fe7762be292a1c3c75b957a3b7e0bc6188257b62f4
R 0af9de2350de25f0ebcc1d0eef1387db
P 58a51123d1a6381cc67d3c64ba3468ec5a92c299ad6fd86de0b843d0ffafb846
R a804252de7d9904d6bfbaabce768affa
U drh
Z 15852f1b01d70da9fb801cb007d16bf9
Z e3cffb3b13ba67932ad3575ad4d1aeec

2
manifest.uuid
View File

@ -1 +1 @@
58a51123d1a6381cc67d3c64ba3468ec5a92c299ad6fd86de0b843d0ffafb846
15824ccda0f110794a479b58fbf36082d8c383f34bae9dc0921d96547fb37869

9
src/pcache1.c
View File

@ -102,6 +102,7 @@ struct PgHdr1 {
PCache1 *pCache; /* Cache that currently owns this page */
PgHdr1 *pLruNext; /* Next in LRU list of unpinned pages */
PgHdr1 *pLruPrev; /* Previous in LRU list of unpinned pages */
/* NB: pLruPrev is only valid if pLruNext!=0 */
};
/*
@ -570,7 +571,8 @@ static PgHdr1 *pcache1PinPage(PgHdr1 *pPage){
pPage->pLruPrev->pLruNext = pPage->pLruNext;
pPage->pLruNext->pLruPrev = pPage->pLruPrev;
pPage->pLruNext = 0;
pPage->pLruPrev = 0;
/* pPage->pLruPrev = 0;
** No need to clear pLruPrev as it is never accessed if pLruNext is 0 */
assert( pPage->isAnchor==0 );
assert( pPage->pCache->pGroup->lru.isAnchor==1 );
pPage->pCache->nRecyclable--;
@ -908,8 +910,9 @@ static SQLITE_NOINLINE PgHdr1 *pcache1FetchStage2(
pPage->iKey = iKey;
pPage->pNext = pCache->apHash[h];
pPage->pCache = pCache;
pPage->pLruPrev = 0;
pPage->pLruNext = 0;
/* pPage->pLruPrev = 0;
** No need to clear pLruPrev since it is not accessed when pLruNext==0 */
*(void **)pPage->page.pExtra = 0;
pCache->apHash[h] = pPage;
if( iKey>pCache->iMaxKey ){
@ -1069,7 +1072,7 @@ static void pcache1Unpin(
/* It is an error to call this function if the page is already
** part of the PGroup LRU list.
*/
assert( pPage->pLruPrev==0 && pPage->pLruNext==0 );
assert( pPage->pLruNext==0 );
assert( PAGE_IS_PINNED(pPage) );
if( reuseUnlikely || pGroup->nPurgeable>pGroup->nMaxPage ){