Add debugging code to count the number of iterations of each loop made as part of statement execution.
FossilOrigin-Name: c6a5b67ae1fb31120a40d2885b848ec2dab15c4e
diff --git a/src/vdbeapi.c b/src/vdbeapi.c
index 0ab76e0..e49c663 100644
--- a/src/vdbeapi.c
+++ b/src/vdbeapi.c
@@ -482,6 +482,9 @@
sqlite3OsCurrentTimeInt64(db->pVfs, &p->startTime);
}
#endif
+#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_LOOPCOUNTERS)
+ memset(p->anExec, 0, sizeof(int) * p->nOp);
+#endif
db->nVdbeActive++;
if( p->readOnly==0 ) db->nVdbeWrite++;
@@ -1454,3 +1457,19 @@
if( resetFlag ) pVdbe->aCounter[op] = 0;
return (int)v;
}
+
+#if defined(SQLITE_DEBUG) && defined(SQLITE_ENABLE_LOOPCOUNTERS)
+const char *sqlite3_stmt_loopcounter(
+ sqlite3_stmt *pStmt, int idx, int *piSub, int *piLoop, int *pnTest, int *pnVisit
+){
+ Vdbe *p = (Vdbe*)pStmt;
+ if( idx>=p->nLoop || idx<0 ) return 0;
+ *piSub = p->aOp[p->aLoop[idx].addrExplain].p1;
+ *piLoop = p->aOp[p->aLoop[idx].addrExplain].p2;
+ *pnTest = p->anExec[ p->aLoop[idx].addrTest ];
+ *pnVisit = p->anExec[ p->aLoop[idx].addrBody ];
+ return p->aOp[p->aLoop[idx].addrExplain].p4.z;
+}
+#endif
+
+