50aa143ab6
ompi_communicator_t, ompi_win_t, ompi_file_t all have a super class of type opal_infosubscriber_t instead of a base/super type of opal_object_t (in previous code comm used c_base, but file used super). It may be a bit bold to say that being a subscriber of MPI_Info is the foundational piece that ties these three things together, but if you object, then I would prefer to turn infosubscriber into a more general name that encompasses other common features rather than create a different super class. The key here is that we want to be able to pass comm, win and file objects as if they were opal_infosubscriber_t, so that one routine can heandle all 3 types of objects being passed to it.
MPI_INFO_NULL is still an ompi_predefined_info_t type since an MPI_Info is part of ompi but the internal details of the underlying information concept is part of opal.
An ompi_info_t type still exists for exposure to the user, but it is simply a wrapper for the opal object.
Routines such as ompi_info_dup, etc have all been moved to opal_info_dup and related to the opal directory.
Fortran to C translation tables are only used for MPI_Info that is exposed to the application and are therefore part of the ompi_info_t and not the opal_info_t
The data structure changes are primarily in the following files:
communicator/communicator.h
ompi/info/info.h
ompi/win/win.h
ompi/file/file.h
The following new files were created:
opal/util/info.h
opal/util/info.c
opal/util/info_subscriber.h
opal/util/info_subscriber.c
This infosubscriber concept is that communicators, files and windows can have subscribers that subscribe to any changes in the info associated with the comm/file/window. When xxx_set_info is called, the new info is presented to each subscriber who can modify the info in any way they want. The new value is presented to the next subscriber and so on until all subscribers have had a chance to modify the value. Therefore, the order of subscribers can make a difference but we hope that there is generally only one subscriber that cares or modifies any given key/value pair. The final info is then stored and returned by a call to xxx_get_info.
The new model can be seen in the following files:
ompi/mpi/c/comm_get_info.c
ompi/mpi/c/comm_set_info.c
ompi/mpi/c/file_get_info.c
ompi/mpi/c/file_set_info.c
ompi/mpi/c/win_get_info.c
ompi/mpi/c/win_set_info.c
The current subscribers where changed as follows:
mca/io/ompio/io_ompio_file_open.c
mca/io/ompio/io_ompio_module.c
mca/osc/rmda/osc_rdma_component.c (This one actually subscribes to "no_locks")
mca/osc/sm/osc_sm_component.c (This one actually subscribes to "blocking_fence" and "alloc_shared_contig")
Signed-off-by: Mark Allen <markalle@us.ibm.com>
Conflicts:
AUTHORS
ompi/communicator/comm.c
ompi/debuggers/ompi_mpihandles_dll.c
ompi/file/file.c
ompi/file/file.h
ompi/info/info.c
ompi/mca/io/ompio/io_ompio.h
ompi/mca/io/ompio/io_ompio_file_open.c
ompi/mca/io/ompio/io_ompio_file_set_view.c
ompi/mca/osc/pt2pt/osc_pt2pt.h
ompi/mca/sharedfp/addproc/sharedfp_addproc.h
ompi/mca/sharedfp/addproc/sharedfp_addproc_file_open.c
ompi/mca/topo/treematch/topo_treematch_dist_graph_create.c
ompi/mpi/c/lookup_name.c
ompi/mpi/c/publish_name.c
ompi/mpi/c/unpublish_name.c
opal/mca/mpool/base/mpool_base_alloc.c
opal/util/Makefile.am
127 строки
3.6 KiB
C
127 строки
3.6 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2004-2010 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2007 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2007-2012 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2009 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2012-2015 Los Alamos National Security, LLC. All rights
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* reserved.
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* Copyright (c) 2016 IBM Corp. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#ifndef OMPI_INFO_H
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#define OMPI_INFO_H
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#include "ompi_config.h"
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#include <string.h>
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#include "mpi.h"
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#include "opal/util/info.h"
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#include "opal/class/opal_list.h"
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#include "opal/class/opal_pointer_array.h"
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#include "opal/threads/mutex.h"
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#include "opal/mca/base/mca_base_var_enum.h"
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struct ompi_info_t {
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struct opal_info_t super;
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/**< generic list pointer which is the container for (key,value)
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pairs */
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int i_f_to_c_index;
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/**< fortran handle for info. This is needed for translation from
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fortran to C and vice versa */
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/**< Mutex for thread safety */
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bool i_freed;
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/**< Whether this info has been freed or not */
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};
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typedef struct ompi_info_t ompi_info_t;
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/**
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* Padded struct to maintain back compatibiltiy.
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* See ompi/communicator/communicator.h comments with struct ompi_communicator_t
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* for full explanation why we chose the following padding construct for predefines.
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*/
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#define PREDEFINED_INFO_PAD (sizeof(void*) * 32)
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struct ompi_predefined_info_t {
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struct ompi_info_t info;
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char padding[PREDEFINED_INFO_PAD - sizeof(ompi_info_t)];
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};
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typedef struct ompi_predefined_info_t ompi_predefined_info_t;
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BEGIN_C_DECLS
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/**
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* Global instance for MPI_INFO_NULL
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*/
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OMPI_DECLSPEC extern ompi_predefined_info_t ompi_mpi_info_null;
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/**
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* Symbol for Fortran 03 bindings to bind to
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*/
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OMPI_DECLSPEC extern ompi_predefined_info_t *ompi_mpi_info_null_addr;
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/**
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* \internal
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* Some declarations needed to use OBJ_NEW and OBJ_DESTRUCT macros
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*/
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OMPI_DECLSPEC OBJ_CLASS_DECLARATION(ompi_info_t);
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/**
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* This function is invoked during ompi_mpi_init() and sets up
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* MPI_Info handling.
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*/
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int ompi_mpiinfo_init(void);
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/**
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* This function is used to free a ompi level info
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*/
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int ompi_info_free (ompi_info_t **info);
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/**
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* This functions is called during ompi_mpi_finalize() and shuts
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* down MPI_Info handling.
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*/
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int ompi_mpiinfo_finalize(void);
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END_C_DECLS
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/**
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* Return whether this info has been freed already or not.
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*
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* @param info Pointer to opal_info_t object.
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*
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* @retval true If the info has already been freed
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* @retval false If the info has not yet been freed
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*
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* If the info has been freed, return true. This will likely only
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* happen in a reliable manner if opal_debug_handle_never_free is
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* true, in which case an extra OBJ_RETAIN is set on the object during
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* OBJ_NEW, meaning that the user will never be able to actually free
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* the underlying object. It's a good way to find out if a process is
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* unintentionally using a freed handle.
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*/
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static inline bool ompi_info_is_freed(ompi_info_t *info)
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{
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return info->i_freed;
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}
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#endif /* OMPI_INFO_H */
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