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Remove a redundant condition from pcache.c. Add an OPTIMIZATION-IF-TRUE comment to another condition that requires it.

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FossilOrigin-Name: 3bfd2621d13b4f842f3af6d35519653f4eb8cad7
This commit is contained in:
dan
2016-05-11 20:03:23 +00:00
parent b2ef900ade
commit 401907e3ff
3 changed files with 15 additions and 9 deletions
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12
manifest
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@@ -1,5 +1,5 @@
C Remove\ssome\sa\ssmall\samount\sof\sredundant\scode\srelated\sto\sPCache.pSynced\sfrom\spcache.c.
D 2016-05-11T15:41:15.317
C Remove\sa\sredundant\scondition\sfrom\spcache.c.\sAdd\san\sOPTIMIZATION-IF-TRUE\scomment\sto\sanother\scondition\sthat\srequires\sit.
D 2016-05-11T20:03:23.145
F Makefile.in 9eda6e1c90d05c199c3ec8a7069b0682ad307657
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc db82b35aef27f412fef14d8534afc022138bcdfd
@@ -367,7 +367,7 @@ F src/os_win.h eb7a47aa17b26b77eb97e4823f20a00b8bda12ca
F src/pager.c cb7a3990eabd895f6487c0856a7fec02b5e40faa
F src/pager.h 329bdf078a4e0a3b35084534d58625d21fd03681
F src/parse.y 10eb2f3fb62341291528c7984498054731f9d31e
F src/pcache.c 4af980bc2a987cf81ddbe867d238c9ccdbaac95c
F src/pcache.c 95ee5008eddda9c61b8d053de8eebf72cf5df7c6
F src/pcache.h 6b865be765d1ebd06145219550b10921c7da7cc9
F src/pcache1.c 7f51d2b541aab57596adf62db2c4bb025d34f04d
F src/pragma.c faf42922bb7ab2f6672cb550356c1967abae3c84
@@ -1488,7 +1488,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 345ce1c9f64f2a424663b4dfcbe4586d9df7bff6
R 410857f6cadf18a1818aed66391afc72
P 9cc8cad78fdfe044ad6726ebfe6909c1e242fa55
R bd613f88cc94ba593741d724ce8bf946
U dan
Z b239392669bc1d86adff0f06ee03f5ae
Z ba94a14dc94ea0c9562dd2071f1152d6

2
manifest.uuid
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@@ -1 +1 @@
9cc8cad78fdfe044ad6726ebfe6909c1e242fa55
3bfd2621d13b4f842f3af6d35519653f4eb8cad7

10
src/pcache.c
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@@ -94,10 +94,15 @@ static void pcacheManageDirtyList(PgHdr *pPage, u8 addRemove){
if( pPage->pDirtyPrev ){
pPage->pDirtyPrev->pDirtyNext = pPage->pDirtyNext;
}else{
/* If there are now no dirty pages in the cache, set eCreate to 2.
** This is an optimization that allows sqlite3PcacheFetch() to skip
** searching for a dirty page to eject from the cache when it might
** otherwise have to. */
assert( pPage==p->pDirty );
p->pDirty = pPage->pDirtyNext;
if( p->pDirty==0 && p->bPurgeable ){
assert( p->eCreate==1 );
assert( p->bPurgeable || p->eCreate==2 );
if( p->pDirty==0 ){ /*OPTIMIZATION-IF-TRUE*/
assert( p->bPurgeable==0 || p->eCreate==1 );
p->eCreate = 2;
}
}
@@ -266,6 +271,7 @@ sqlite3_pcache_page *sqlite3PcacheFetch(
assert( pCache->pCache!=0 );
assert( createFlag==3 || createFlag==0 );
assert( pgno>0 );
assert( pCache->eCreate==((pCache->bPurgeable && pCache->pDirty) ? 1 : 2) );
/* eCreate defines what to do if the page does not exist.
** 0 Do not allocate a new page. (createFlag==0)