/* * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana * University Research and Technology * Corporation. All rights reserved. * Copyright (c) 2004-2005 The University of Tennessee and The University * of Tennessee Research Foundation. All rights * reserved. * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, * University of Stuttgart. All rights reserved. * Copyright (c) 2004-2005 The Regents of the University of California. * All rights reserved. * $COPYRIGHT$ * * Additional copyrights may follow * * $HEADER$ */ #include "ompi_config.h" #include #include #include "mpi.h" #include "ompi/constants.h" #include "opal/class/opal_list.h" #include "opal/util/output.h" #include "opal/mca/mca.h" #include "opal/mca/base/base.h" #include "opal/mca/base/mca_base_component_repository.h" #include "ompi/mca/io/io.h" #include "ompi/mca/io/base/base.h" #include "ompi/mca/io/base/io_base_request.h" /* * Private functions */ static int init_query(const mca_base_component_t *ls, mca_base_component_priority_list_item_t *entry, bool enable_progress_threads, bool enable_mpi_threads); static int init_query_1_0_0(const mca_base_component_t *ls, mca_base_component_priority_list_item_t *entry, bool enable_progress_threads, bool enable_mpi_threads); /* * Scan down the list of successfully opened components and query each of * them (the opened list will be one or more components. If the user * requested a specific component, it will be the only component in the * opened list). Create and populate the available list of all * components who indicate that they want to be considered for selection. * Close all components who do not want to be considered for selection, * and destroy the opened list. * * It is *not* an error if there are no io components available. * Appropriate run-time MPI exceptions will be invoked during * MPI_FILE_OPEN and MPI_FILE_DELETE. */ int mca_io_base_find_available(bool enable_progress_threads, bool enable_mpi_threads) { int err; mca_base_component_priority_list_item_t *entry; opal_list_item_t *p; const mca_base_component_t *component; /* Initialize the list */ OBJ_CONSTRUCT(&mca_io_base_components_available, opal_list_t); mca_io_base_components_available_valid = true; /* The list of components that we should check has already been established in mca_io_base_open. */ for (p = opal_list_remove_first(&mca_io_base_components_opened); p != NULL; p = opal_list_remove_first(&mca_io_base_components_opened)) { component = ((mca_base_component_list_item_t *) p)->cli_component; /* Call a subroutine to do the work, because the component may represent different versions of the io MCA. */ entry = OBJ_NEW(mca_base_component_priority_list_item_t); entry->super.cli_component = component; entry->cpli_priority = 0; if (OMPI_SUCCESS == init_query(component, entry, enable_progress_threads, enable_mpi_threads)) { /* Save the results in the list. The priority isn't relevant, because selection is decided at communicator-constructor time. But we save the thread arguments (set in the init_query() function) so that the initial selection algorithm can negotiate the overall thread level for this process. */ opal_list_append(&mca_io_base_components_available, (opal_list_item_t *) entry); } else { /* If the component doesn't want to run, then close it. It's already had its close() method invoked; now close it out of the DSO repository (if it's there). */ mca_base_component_repository_release(component); OBJ_RELEASE(entry); } /* Free the entry from the "opened" list */ OBJ_RELEASE(p); } /* The opened list is now no longer useful and we can free it */ OBJ_DESTRUCT(&mca_io_base_components_opened); mca_io_base_components_opened_valid = false; /* Setup the freelist */ if (OMPI_SUCCESS != (err = mca_io_base_request_create_freelist())) { return err; } /* All done */ return OMPI_SUCCESS; } /* * Query a component, see if it wants to run at all. If it does, save * some information. If it doesn't, close it. */ static int init_query(const mca_base_component_t *m, mca_base_component_priority_list_item_t *entry, bool enable_progress_threads, bool enable_mpi_threads) { int ret; opal_output_verbose(10, mca_io_base_output, "io:find_available: querying io component %s", m->mca_component_name); /* This component has already been successfully opened. So now query it. */ if (1 == m->mca_type_major_version && 0 == m->mca_type_minor_version && 0 == m->mca_type_release_version) { ret = init_query_1_0_0(m, entry, enable_progress_threads, enable_mpi_threads); } else { /* Unrecognized io API version */ opal_output_verbose(10, mca_io_base_output, "io:find_available: unrecognized io API version (%d.%d.%d)", m->mca_type_major_version, m->mca_type_minor_version, m->mca_type_release_version); /* JMS show_help */ return OMPI_ERROR; } /* Query done -- look at the return value to see what happened */ if (OMPI_SUCCESS != ret) { opal_output_verbose(10, mca_io_base_output, "io:find_available: io component %s is not available", m->mca_component_name); if (NULL != m->mca_close_component) { m->mca_close_component(); } } else { opal_output_verbose(10, mca_io_base_output, "io:find_available: io component %s is available", m->mca_component_name); } /* All done */ return ret; } /* * Query a specific component, io v1.0.0 */ static int init_query_1_0_0(const mca_base_component_t *component, mca_base_component_priority_list_item_t *entry, bool enable_progress_threads, bool enable_mpi_threads) { mca_io_base_component_1_0_0_t *io = (mca_io_base_component_1_0_0_t *) component; return io->io_init_query(enable_progress_threads, enable_mpi_threads); }