Using and Administering

Using the Data Access API

To use this API, you need to call the data access subroutines in the following order:

• Call ll_query to initialize the query object. See ll_query Subroutine for more information.
• Call ll_set_request to filter the objects you want to query. See ll_set_request Subroutine for more information.
  • Call ll_get_objs to retrieve a list of objects from a LoadLeveler daemon. See ll_get_objs Subroutine for more information.
    • Call ll_get_data to retrieve specific data from an object. See ll_get_data Subroutine for more information.
  • Call ll_next_obj to retrieve the next object in the list. See ll_next_obj Subroutine for more information.
• Call ll_free_objs to free the list of objects you received. See ll_free_objs Subroutine for more information.
• Call ll_deallocate to end the query. See ll_deallocate Subroutine for more information.

To see code that uses these subroutines, refer to Examples of Using the Data Access API. For more information on LoadLeveler objects, see Understanding the LoadLeveler Job Object Model.