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Reference count the KeyInfo object. Cache a copy of an appropriate KeyInfo

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for each index in the Index object, and reuse that one copy as much as possible.

FossilOrigin-Name: defd5205a7cc3543cdd18f906f568e943b8b3a2c
This commit is contained in:
drh
2013-11-06 19:59:23 +00:00
parent 93889d9335
commit 2ec2fb2269
16 changed files with 175 additions and 161 deletions
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27
src/insert.c
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@@ -24,7 +24,7 @@
** for that table that is actually opened.
*/
void sqlite3OpenTable(
Parse *p, /* Generate code into this VDBE */
Parse *pParse, /* Generate code into this VDBE */
int iCur, /* The cursor number of the table */
int iDb, /* The database index in sqlite3.aDb[] */
Table *pTab, /* The table to be opened */
@@ -32,9 +32,10 @@ void sqlite3OpenTable(
){
Vdbe *v;
assert( !IsVirtual(pTab) );
v = sqlite3GetVdbe(p);
v = sqlite3GetVdbe(pParse);
assert( opcode==OP_OpenWrite || opcode==OP_OpenRead );
sqlite3TableLock(p, iDb, pTab->tnum, (opcode==OP_OpenWrite)?1:0, pTab->zName);
sqlite3TableLock(pParse, iDb, pTab->tnum,
(opcode==OP_OpenWrite)?1:0, pTab->zName);
if( HasRowid(pTab) ){
sqlite3VdbeAddOp4Int(v, opcode, iCur, pTab->tnum, iDb, pTab->nCol);
VdbeComment((v, "%s", pTab->zName));
@@ -42,8 +43,8 @@ void sqlite3OpenTable(
Index *pPk = sqlite3PrimaryKeyIndex(pTab);
assert( pPk!=0 );
assert( pPk->tnum=pTab->tnum );
sqlite3VdbeAddOp4(v, opcode, iCur, pPk->tnum, iDb,
(char*)sqlite3IndexKeyinfo(p, pPk), P4_KEYINFO_HANDOFF);
sqlite3VdbeAddOp3(v, opcode, iCur, pPk->tnum, iDb);
sqlite3VdbeSetP4KeyInfo(pParse, pPk);
VdbeComment((v, "%s", pTab->zName));
}
}
@@ -1706,12 +1707,11 @@ int sqlite3OpenTableAndIndices(
}
*piIdxCur = iBase;
for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
KeyInfo *pKey = sqlite3IndexKeyinfo(pParse, pIdx);
int iIdxCur = iBase++;
assert( pIdx->pSchema==pTab->pSchema );
if( pIdx->autoIndex==2 && !HasRowid(pTab) ) *piDataCur = iIdxCur;
sqlite3VdbeAddOp4(v, op, iIdxCur, pIdx->tnum, iDb,
(char*)pKey, P4_KEYINFO_HANDOFF);
sqlite3VdbeAddOp3(v, op, iIdxCur, pIdx->tnum, iDb);
sqlite3VdbeSetP4KeyInfo(pParse, pIdx);
VdbeComment((v, "%s", pIdx->zName));
}
if( iBase>pParse->nTab ) pParse->nTab = iBase;
@@ -1828,7 +1828,6 @@ static int xferOptimization(
int emptyDestTest = 0; /* Address of test for empty pDest */
int emptySrcTest = 0; /* Address of test for empty pSrc */
Vdbe *v; /* The VDBE we are building */
KeyInfo *pKey; /* Key information for an index */
int regAutoinc; /* Memory register used by AUTOINC */
int destHasUniqueIdx = 0; /* True if pDest has a UNIQUE index */
int regData, regRowid; /* Registers holding data and rowid */
@@ -2028,13 +2027,11 @@ static int xferOptimization(
if( xferCompatibleIndex(pDestIdx, pSrcIdx) ) break;
}
assert( pSrcIdx );
pKey = sqlite3IndexKeyinfo(pParse, pSrcIdx);
sqlite3VdbeAddOp4(v, OP_OpenRead, iSrc, pSrcIdx->tnum, iDbSrc,
(char*)pKey, P4_KEYINFO_HANDOFF);
sqlite3VdbeAddOp3(v, OP_OpenRead, iSrc, pSrcIdx->tnum, iDbSrc);
sqlite3VdbeSetP4KeyInfo(pParse, pSrcIdx);
VdbeComment((v, "%s", pSrcIdx->zName));
pKey = sqlite3IndexKeyinfo(pParse, pDestIdx);
sqlite3VdbeAddOp4(v, OP_OpenWrite, iDest, pDestIdx->tnum, iDbDest,
(char*)pKey, P4_KEYINFO_HANDOFF);
sqlite3VdbeAddOp3(v, OP_OpenWrite, iDest, pDestIdx->tnum, iDbDest);
sqlite3VdbeSetP4KeyInfo(pParse, pDestIdx);
sqlite3VdbeChangeP5(v, OPFLAG_BULKCSR);
VdbeComment((v, "%s", pDestIdx->zName));
addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0);