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Reduce the overhead of SQLITE_ENABLE_STMT_SCANSTATUS some.

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FossilOrigin-Name: 212927e97e7be7d237de08359dce0dfb9211ac406b32009a6e15afd79c006475
This commit is contained in:
dan
2022-12-07 20:09:54 +00:00
parent 209dbab997
commit 7f4b066eb2
7 changed files with 51 additions and 77 deletions
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22
src/vdbeapi.c
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@@ -2123,14 +2123,12 @@ int sqlite3_stmt_scanstatus_v2(
ScanStatus *pScan;
int idx;
/* If the v2 flag is clear, then this function must ignore any ScanStatus
** structures with ScanStatus.addrLoop set to 0. */
if( iScan<0 ){
int ii;
if( iScanStatusOp==SQLITE_SCANSTAT_NCYCLE ){
i64 res = 0;
for(ii=0; ii<p->nOp; ii++){
res += p->anCycle[ii];
res += p->aOp[ii].nCycle;
}
*(i64*)pOut = res;
return 0;
@@ -2141,6 +2139,8 @@ int sqlite3_stmt_scanstatus_v2(
idx = iScan;
pScan = &p->aScan[idx];
}else{
/* If the COMPLEX flag is clear, then this function must ignore any
** ScanStatus structures with ScanStatus.addrLoop set to 0. */
for(idx=0; idx<p->nScan; idx++){
pScan = &p->aScan[idx];
if( pScan->zName ){
@@ -2154,7 +2154,7 @@ int sqlite3_stmt_scanstatus_v2(
switch( iScanStatusOp ){
case SQLITE_SCANSTAT_NLOOP: {
if( pScan->addrLoop>0 ){
*(sqlite3_int64*)pOut = p->anExec[pScan->addrLoop];
*(sqlite3_int64*)pOut = p->aOp[pScan->addrLoop].nExec;
}else{
*(sqlite3_int64*)pOut = -1;
}
@@ -2162,7 +2162,7 @@ int sqlite3_stmt_scanstatus_v2(
}
case SQLITE_SCANSTAT_NVISIT: {
if( pScan->addrVisit>0 ){
*(sqlite3_int64*)pOut = p->anExec[pScan->addrVisit];
*(sqlite3_int64*)pOut = p->aOp[pScan->addrVisit].nExec;
}else{
*(sqlite3_int64*)pOut = -1;
}
@@ -2218,7 +2218,7 @@ int sqlite3_stmt_scanstatus_v2(
if( iIns==0 ) break;
if( iIns>0 ){
while( iIns<=iEnd ){
res += p->anCycle[iIns];
res += p->aOp[iIns].nCycle;
iIns++;
}
}else{
@@ -2229,7 +2229,7 @@ int sqlite3_stmt_scanstatus_v2(
if( (sqlite3OpcodeProperty[pOp->opcode] & OPFLG_NCYCLE)==0 ){
continue;
}
res += p->anCycle[iOp];
res += p->aOp[iOp].nCycle;
}
}
}
@@ -2261,7 +2261,11 @@ int sqlite3_stmt_scanstatus(
*/
void sqlite3_stmt_scanstatus_reset(sqlite3_stmt *pStmt){
Vdbe *p = (Vdbe*)pStmt;
memset(p->anExec, 0, p->nOp * sizeof(i64));
memset(p->anCycle, 0, p->nOp * sizeof(u64));
int ii;
for(ii=0; ii<p->nOp; ii++){
Op *pOp = &p->aOp[ii];
pOp->nExec = 0;
pOp->nCycle = 0;
}
}
#endif /* SQLITE_ENABLE_STMT_SCANSTATUS */