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If SQLITE_ENABLE_STMT_SCANSTATUS is defined, record the number of times each VDBE opcode is executed. Derive the values returned by sqlite3_stmt_scanstatus() from these records on demand.

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FossilOrigin-Name: 9ea37422a8cc2fce51bb10508e5e90f40fd4b511
This commit is contained in:
dan
2014-11-01 20:38:06 +00:00
parent 89e71646df
commit 6f9702ed4d
10 changed files with 203 additions and 177 deletions
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44
src/vdbe.c
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@@ -167,18 +167,6 @@ int sqlite3_found_count = 0;
/* Return true if the cursor was opened using the OP_OpenSorter opcode. */
#define isSorter(x) ((x)->pSorter!=0)
/*
** The first argument passed to the IncrementExplainCounter() macro must
** be a non-NULL pointer to an object of type VdbeCursor. The second
** argument must be either "nLoop" or "nVisit" (without the double-quotes).
*/
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
# define IncrementExplainCounter(pCsr, counter) \
if( (pCsr)->pExplain ) (pCsr)->pExplain->counter++
#else
# define IncrementExplainCounter(pCsr, counter)
#endif
/*
** Allocate VdbeCursor number iCur. Return a pointer to it. Return NULL
** if we run out of memory.
@@ -620,6 +608,9 @@ int sqlite3VdbeExec(
#endif
nVmStep++;
pOp = &aOp[pc];
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
if( p->pFrame==0 ) p->anExec[pc]++;
#endif
/* Only allow tracing if SQLITE_DEBUG is defined.
*/
@@ -3568,7 +3559,6 @@ case OP_SeekGT: { /* jump, in3 */
#ifdef SQLITE_DEBUG
pC->seekOp = pOp->opcode;
#endif
IncrementExplainCounter(pC, nLoop);
if( pC->isTable ){
/* The input value in P3 might be of any type: integer, real, string,
** blob, or NULL. But it needs to be an integer before we can do
@@ -3677,8 +3667,6 @@ case OP_SeekGT: { /* jump, in3 */
VdbeBranchTaken(res!=0,2);
if( res ){
pc = pOp->p2 - 1;
}else{
IncrementExplainCounter(pC, nVisit);
}
break;
}
@@ -3889,7 +3877,6 @@ case OP_NotExists: { /* jump, in3 */
res = 0;
iKey = pIn3->u.i;
rc = sqlite3BtreeMovetoUnpacked(pCrsr, 0, iKey, 0, &res);
IncrementExplainCounter(pC, nLoop);
pC->movetoTarget = iKey; /* Used by OP_Delete */
pC->nullRow = 0;
pC->cacheStatus = CACHE_STALE;
@@ -3897,8 +3884,6 @@ case OP_NotExists: { /* jump, in3 */
VdbeBranchTaken(res!=0,2);
if( res!=0 ){
pc = pOp->p2 - 1;
}else{
IncrementExplainCounter(pC, nVisit);
}
pC->seekResult = res;
break;
@@ -4467,8 +4452,6 @@ case OP_Last: { /* jump */
res = 0;
assert( pCrsr!=0 );
rc = sqlite3BtreeLast(pCrsr, &res);
IncrementExplainCounter(pC, nLoop);
if( res==0 ) IncrementExplainCounter(pC, nVisit);
pC->nullRow = (u8)res;
pC->deferredMoveto = 0;
pC->cacheStatus = CACHE_STALE;
@@ -4538,14 +4521,11 @@ case OP_Rewind: { /* jump */
pC->deferredMoveto = 0;
pC->cacheStatus = CACHE_STALE;
}
IncrementExplainCounter(pC, nLoop);
pC->nullRow = (u8)res;
assert( pOp->p2>0 && pOp->p2<p->nOp );
VdbeBranchTaken(res!=0,2);
if( res ){
pc = pOp->p2 - 1;
}else{
IncrementExplainCounter(pC, nVisit);
}
break;
}
@@ -4656,7 +4636,6 @@ next_tail:
pC->cacheStatus = CACHE_STALE;
VdbeBranchTaken(res==0,2);
if( res==0 ){
IncrementExplainCounter(pC, nVisit);
pC->nullRow = 0;
pc = pOp->p2 - 1;
p->aCounter[pOp->p5]++;
@@ -6079,10 +6058,7 @@ case OP_VFilter: { /* jump */
VdbeBranchTaken(res!=0,2);
if( res ){
pc = pOp->p2 - 1;
}else{
IncrementExplainCounter(pCur, nVisit);
}
IncrementExplainCounter(pCur, nLoop);
}
pCur->nullRow = 0;
@@ -6175,7 +6151,6 @@ case OP_VNext: { /* jump */
if( !res ){
/* If there is data, jump to P2 */
pc = pOp->p2 - 1;
IncrementExplainCounter(pCur, nVisit);
}
goto check_for_interrupt;
}
@@ -6375,19 +6350,6 @@ case OP_Init: { /* jump */
break;
}
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
case OP_Explain: {
ExplainArg *pArg;
VdbeCursor *pCur;
if( pOp->p4type==P4_EXPLAIN && (pArg = pOp->p4.pExplain)->iCsr>=0 ){
pArg = pOp->p4.pExplain;
pCur = p->apCsr[pArg->iCsr];
pCur->pExplain = pArg;
}
break;
}
#endif
/* Opcode: Noop * * * * *
**