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Very small performance increase in sqlite3VdbeSetNumCols().

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FossilOrigin-Name: 8885b4461044ae8ecdfe1b9aa47f4aad65efabc98e3fcd9e307a06504fab34c6
This commit is contained in:
drh 2017-05-31 11:24:13 +00:00
parent 02f18cc5ac
commit b8a1290a28
3 changed files with 13 additions and 12 deletions
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12
manifest
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@ -1,5 +1,5 @@
C Reorder\sfields\sin\sthe\sPgHdr\sobject\sfor\sa\sperformance\sincrease.
D 2017-05-31T03:20:39.040
C Very\ssmall\sperformance\sincrease\sin\ssqlite3VdbeSetNumCols().
D 2017-05-31T11:24:13.659
F Makefile.in 1cc758ce3374a32425e4d130c2fe7b026b20de5b8843243de75f087c0a2661fb
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc 8eeb80162074004e906b53d7340a12a14c471a83743aab975947e95ce061efcc
@ -475,7 +475,7 @@ F src/vdbe.c cce462ad3cf1cad1944e105f773712a979e23fbe302328dc2885b0f4a612e1f6
F src/vdbe.h 70a409d171d4e51b962f0d53abf15c33c404c6aa4c9d62fb3a931b5a62ba9615
F src/vdbeInt.h cdcdabad4f5d6bf7a3beb826a7f33ee6f8f1cb220042bedd5b7d4bf2ea1d179f
F src/vdbeapi.c 6009dbf02b70aa0dc461e98ebad98b88e4b22588341818891a2ea5c3c6533411
F src/vdbeaux.c 4ff778d12873ec6e3c222634dd17afeddfcee3ffa5dc51c173b306a2677cfa22
F src/vdbeaux.c bc9b3228f6d99bef0d0ecaf3a0e0e8358b3873242d0d2fe944226de3fdf9521e
F src/vdbeblob.c 359891617358deefc85bef7bcf787fa6b77facb9
F src/vdbemem.c 2c70f8f5de6c71fb99a22c5b83be9fab5c47cdd8e279fa44a8c00cfed06d7e89
F src/vdbesort.c f512c68d0bf7e0105316a5594c4329358c8ee9cae3b25138df041d97516c0372
@ -1581,7 +1581,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P de28e6514a42438411e2c9d833ba660108128ca86d0b90f32925fb73195f4862
R 4744950bcddf7fda61b1808765626de4
P 326e63d71e0e164c5bcd1f74772cb4071b82daf6f04a5d440b985bace5a4c941
R 7046283035661560edab9492c510bae7
U drh
Z 00c7d7a31f2ef8dbc696269ba0fee834
Z a2792650408b6d55b08b5a41a2e34334

2
manifest.uuid
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@ -1 +1 @@
326e63d71e0e164c5bcd1f74772cb4071b82daf6f04a5d440b985bace5a4c941
8885b4461044ae8ecdfe1b9aa47f4aad65efabc98e3fcd9e307a06504fab34c6

11
src/vdbeaux.c
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@ -2160,17 +2160,18 @@ static void Cleanup(Vdbe *p){
** be called on an SQL statement before sqlite3_step().
*/
void sqlite3VdbeSetNumCols(Vdbe *p, int nResColumn){
Mem *pColName;
int n;
sqlite3 *db = p->db;
releaseMemArray(p->aColName, p->nResColumn*COLNAME_N);
sqlite3DbFree(db, p->aColName);
if( p->nResColumn ){
releaseMemArray(p->aColName, p->nResColumn*COLNAME_N);
sqlite3DbFree(db, p->aColName);
}
n = nResColumn*COLNAME_N;
p->nResColumn = (u16)nResColumn;
p->aColName = pColName = (Mem*)sqlite3DbMallocRawNN(db, sizeof(Mem)*n );
p->aColName = (Mem*)sqlite3DbMallocRawNN(db, sizeof(Mem)*n );
if( p->aColName==0 ) return;
initMemArray(p->aColName, n, p->db, MEM_Null);
initMemArray(p->aColName, n, db, MEM_Null);
}
/*