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Add a new (experimental) sqlite3_stmt_status() verb that returns the number

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of VM steps.

FossilOrigin-Name: f1366bab737a3ac2ea20a0ec014cc306d7ded8a5
This commit is contained in:
drh
2013-06-25 22:01:22 +00:00
parent adbae616bd
commit bf159fa21b
7 changed files with 32 additions and 13 deletions
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5
src/vdbe.c
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@@ -556,12 +556,13 @@ int sqlite3VdbeExec(
int checkProgress; /* True if progress callbacks are enabled */
int nProgressOps = 0; /* Opcodes executed since progress callback. */
#endif
int iCompare = 0; /* Result of last OP_Compare operation */
unsigned nVmStep = 0; /* Number of virtual machine steps */
Mem *aMem = p->aMem; /* Copy of p->aMem */
Mem *pIn1 = 0; /* 1st input operand */
Mem *pIn2 = 0; /* 2nd input operand */
Mem *pIn3 = 0; /* 3rd input operand */
Mem *pOut = 0; /* Output operand */
int iCompare = 0; /* Result of last OP_Compare operation */
int *aPermute = 0; /* Permutation of columns for OP_Compare */
i64 lastRowid = db->lastRowid; /* Saved value of the last insert ROWID */
#ifdef VDBE_PROFILE
@@ -606,6 +607,7 @@ int sqlite3VdbeExec(
origPc = pc;
start = sqlite3Hwtime();
#endif
nVmStep++;
pOp = &aOp[pc];
/* Only allow tracing if SQLITE_DEBUG is defined.
@@ -6200,6 +6202,7 @@ vdbe_error_halt:
** top. */
vdbe_return:
db->lastRowid = lastRowid;
p->aCounter[SQLITE_STMTSTATUS_VM_STEP-1] += (int)nVmStep;
sqlite3VdbeLeave(p);
return rc;