Revamp the way the DBSTAT virtual table is registered.

FossilOrigin-Name: 4e6520159e729b6ea96ccdb14f0ecb00a0ff7cbd

src/test1.c

@@ -6680,7 +6680,40 @@ static int test_bad_behavior(
   }
   return TCL_OK;
 }  
-  
+
+/*
+** tclcmd:   register_dbstat_vtab DB
+**
+** Cause the dbstat virtual table to be available on the connection DB
+*/
+static int test_register_dbstat_vtab(
+  void *clientData,
+  Tcl_Interp *interp,
+  int objc,
+  Tcl_Obj *CONST objv[]
+){
+#ifdef SQLITE_OMIT_VIRTUALTABLE
+  Tcl_AppendResult(interp, "dbstat not available because of "
+                           "SQLITE_OMIT_VIRTUALTABLE", (void*)0);
+  return TCL_ERROR;
+#else
+  struct SqliteDb { sqlite3 *db; };
+  char *zDb;
+  Tcl_CmdInfo cmdInfo;
+
+  if( objc!=2 ){
+    Tcl_WrongNumArgs(interp, 1, objv, "DB");
+    return TCL_ERROR;
+  }
+
+  zDb = Tcl_GetString(objv[1]);
+  if( Tcl_GetCommandInfo(interp, zDb, &cmdInfo) ){
+    sqlite3* db = ((struct SqliteDb*)cmdInfo.objClientData)->db;
+    sqlite3DbstatRegister(db);
+  }
+  return TCL_OK;
+#endif /* SQLITE_OMIT_VIRTUALTABLE */
+}
 
 /*
 ** Register commands with the TCL interpreter.
@@ -6752,6 +6785,7 @@ int Sqlitetest1_Init(Tcl_Interp *interp){
      void *clientData;
   } aObjCmd[] = {
      { "bad_behavior",                  test_bad_behavior,  (void*)&iZero },
+     { "register_dbstat_vtab",          test_register_dbstat_vtab  },
      { "sqlite3_connection_pointer",    get_sqlite_pointer, 0 },
      { "sqlite3_bind_int",              test_bind_int,      0 },
      { "sqlite3_bind_zeroblob",         test_bind_zeroblob, 0 },