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Use fewer CPU cycles to commit a read transaction.

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FossilOrigin-Name: 861e55656abb208b4f1f2c8808c76c0454427af85a8930ab53f9c053605f39c7
This commit is contained in:
drh
2025-07-19 18:17:06 +00:00
parent 1f436ad563
commit c585e03a4b
3 changed files with 17 additions and 13 deletions
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14
manifest
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@@ -1,5 +1,5 @@
C Add\sSQLITE_SELFORDER1\sto\sJS's\ssqlite3.capi\snamespace.\sIt's\sonly\suseful\swhen\sbuilt\swith\san\ssqlite3.c\swhich\sitself\swas\screated\swith\s-DSQLITE_ENABLE_ORDERED_SET_AGGREGATES,\swhich\sthe\scanonical\sbuild\sdoes\snot\sdo\sbut\scustom\sbuilds\smay.
D 2025-07-18T22:18:41.955
C Use\sfewer\sCPU\scycles\sto\scommit\sa\sread\stransaction.
D 2025-07-19T18:17:06.185
F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -857,7 +857,7 @@ F src/vdbe.c e505b8b879a330e8dafbe3ed9582eae2fc671b44a64748d1b58c07e4e0f527da
F src/vdbe.h ea1f1b52f0efe422f80d88da3c57e4eadc72856e29a22f1ff08e502ec6ba5f08
F src/vdbeInt.h 626465ff6d673f73a2476dc230b7cd07bdaf4acea9d4ecceaa12a5174bb2c8d7
F src/vdbeapi.c f9a4881a9674fec3fa13da35044a1484d3c4b95f9ec891cc8ffb02ef2b7a41df
F src/vdbeaux.c ed06d2892e830b7ad158f81b2b610c918fbb36a0b717b48d299daca80e8264c6
F src/vdbeaux.c 933a024b84154776b6b8d01f0de266d6d512530962e9793cf90fe1be5bb3697a
F src/vdbeblob.c b3f0640db9642fbdc88bd6ebcc83d6009514cafc98f062f675f2c8d505d82692
F src/vdbemem.c e67d9c6484d868c879d20c70d00bf4a9058082f1d4058607ca15d50eb3aebc21
F src/vdbesort.c cb6f472e83ca12c46aa7de0ac0a9d11458b357986f2617a1c90dfb19a542ecbe
@@ -2213,8 +2213,8 @@ F tool/version-info.c 3b36468a90faf1bbd59c65fd0eb66522d9f941eedd364fabccd7227350
F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
F tool/warnings.sh 1ad0169b022b280bcaaf94a7fa231591be96b514230ab5c98fbf15cd7df842dd
F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
P b66fcb61a1d044fa18419ab382a8b159e9b6bb52956917d8a9de4dccf8dc9a87
R e47f8ee81c414bf3cf4be52d123f908b
U stephan
Z d279856fb215404c8ca1d35b06ec79fb
P fdd15e938ccfac9e871d781d1c8fe8be6dbd9e8cbbcb8b7f0b035e5ceebb8746
R 5e8f8aa890f0c52df0b513b08f31622c
U drh
Z 7befb42110fb8e7ba3c32234f7f25e7b
# Remove this line to create a well-formed Fossil manifest.

2
manifest.uuid
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@@ -1 +1 @@
fdd15e938ccfac9e871d781d1c8fe8be6dbd9e8cbbcb8b7f0b035e5ceebb8746
861e55656abb208b4f1f2c8808c76c0454427af85a8930ab53f9c053605f39c7

14
src/vdbeaux.c
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@@ -2994,10 +2994,12 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
if( 0==sqlite3Strlen30(sqlite3BtreeGetFilename(db->aDb[0].pBt))
|| nTrans<=1
){
for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
rc = sqlite3BtreeCommitPhaseOne(pBt, 0);
if( needXcommit ){
for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( sqlite3BtreeTxnState(pBt)>=SQLITE_TXN_WRITE ){
rc = sqlite3BtreeCommitPhaseOne(pBt, 0);
}
}
}
@@ -3008,7 +3010,9 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
*/
for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
Btree *pBt = db->aDb[i].pBt;
if( pBt ){
int txn = sqlite3BtreeTxnState(pBt);
if( txn!=SQLITE_TXN_NONE ){
assert( needXcommit || txn==SQLITE_TXN_READ );
rc = sqlite3BtreeCommitPhaseTwo(pBt, 0);
}
}