Major structural changes to data types:

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")

Author: dsolt

AUTHORS

@@ -36,6 +36,7 @@ [email protected]               Denis Dimick                LANL
 [email protected]              Dave Goodell                Cisco
 [email protected]          Donald Kerr                 Sun, Oracle
 [email protected]             Doron Shoham                Mellanox
+[email protected]                David Solt                  IBM
 [email protected]        Ethan Mallove               Sun, Oracle
 [email protected]           Eugene Loh                  Sun, Oracle
 [email protected]               Edgar Gabriel               HLRS, UH, UTK

ompi/communicator/comm.c

@@ -22,6 +22,7 @@
  *                         and Technology (RIST). All rights reserved.
  * Copyright (c) 2014-2015 Intel, Inc. All rights reserved.
  * Copyright (c) 2015      Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2016 IBM Corp.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -86,7 +87,7 @@ static int ompi_comm_copy_topo (ompi_communicator_t *oldcomm,
 
 /* idup with local group and info. the local group support is provided to support ompi_comm_set_nb */
 static int ompi_comm_idup_internal (ompi_communicator_t *comm, ompi_group_t *group, ompi_group_t *remote_group,
-                                    ompi_info_t *info, ompi_communicator_t **newcomm, ompi_request_t **req);
+                                    opal_info_t *info, ompi_communicator_t **newcomm, ompi_request_t **req);
 
 
 /**********************************************************************/
@@ -787,7 +788,7 @@ static int ompi_comm_split_type_get_part (ompi_group_t *group, int *results, int
 int
 ompi_comm_split_type(ompi_communicator_t *comm,
                      int split_type, int key,
-                     ompi_info_t *info,
+                     opal_info_t *info,
                      ompi_communicator_t** newcomm)
 {
     int myinfo[2];
@@ -998,7 +999,7 @@ int ompi_comm_dup ( ompi_communicator_t * comm, ompi_communicator_t **newcomm )
 /**********************************************************************/
 /**********************************************************************/
 /**********************************************************************/
-int ompi_comm_dup_with_info ( ompi_communicator_t * comm, ompi_info_t *info, ompi_communicator_t **newcomm )
+int ompi_comm_dup_with_info ( ompi_communicator_t * comm, opal_info_t *info, ompi_communicator_t **newcomm )
 {
     ompi_communicator_t *newcomp = NULL;
     ompi_group_t *remote_group = NULL;
@@ -1076,14 +1077,14 @@ int ompi_comm_idup (ompi_communicator_t *comm, ompi_communicator_t **newcomm, om
     return ompi_comm_idup_with_info (comm, NULL, newcomm, req);
 }
 
-int ompi_comm_idup_with_info (ompi_communicator_t *comm, ompi_info_t *info, ompi_communicator_t **newcomm, ompi_request_t **req)
+int ompi_comm_idup_with_info (ompi_communicator_t *comm, opal_info_t *info, ompi_communicator_t **newcomm, ompi_request_t **req)
 {
     return ompi_comm_idup_internal (comm, comm->c_local_group, comm->c_remote_group, info, newcomm, req);
 }
 
 /* NTH: we need a way to idup with a smaller local group so this function takes a local group */
 static int ompi_comm_idup_internal (ompi_communicator_t *comm, ompi_group_t *group, ompi_group_t *remote_group,
-                                    ompi_info_t *info, ompi_communicator_t **newcomm, ompi_request_t **req)
+                                    opal_info_t *info, ompi_communicator_t **newcomm, ompi_request_t **req)
 {
     struct ompi_comm_idup_with_info_context *context;
     ompi_comm_request_t *request;

ompi/communicator/comm_init.c

@@ -21,6 +21,7 @@
  * Copyright (c) 2015      Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
  * Copyright (c) 2015      Intel, Inc. All rights reserved.
+ * Copyright (c) 2016 IBM Corp.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -33,6 +34,7 @@
 #include <stdio.h>
 
 #include "opal/util/bit_ops.h"
+#include "opal/util/info_subscriber.h"
 #include "ompi/constants.h"
 #include "ompi/mca/pml/pml.h"
 #include "ompi/mca/coll/base/base.h"
@@ -52,9 +54,9 @@
 opal_pointer_array_t ompi_mpi_communicators = {{0}};
 opal_pointer_array_t ompi_comm_f_to_c_table = {{0}};
 
-ompi_predefined_communicator_t  ompi_mpi_comm_world = {{{0}}};
-ompi_predefined_communicator_t  ompi_mpi_comm_self = {{{0}}};
-ompi_predefined_communicator_t  ompi_mpi_comm_null = {{{0}}};
+ompi_predefined_communicator_t  ompi_mpi_comm_world = {{{{0}}}};
+ompi_predefined_communicator_t  ompi_mpi_comm_self = {{{{0}}}};
+ompi_predefined_communicator_t  ompi_mpi_comm_null = {{{{0}}}};
 ompi_communicator_t  *ompi_mpi_comm_parent = NULL;
 
 ompi_predefined_communicator_t *ompi_mpi_comm_world_addr =
@@ -67,7 +69,7 @@ ompi_predefined_communicator_t *ompi_mpi_comm_null_addr =
 static void ompi_comm_construct(ompi_communicator_t* comm);
 static void ompi_comm_destruct(ompi_communicator_t* comm);
 
-OBJ_CLASS_INSTANCE(ompi_communicator_t, opal_object_t,
+OBJ_CLASS_INSTANCE(ompi_communicator_t, opal_infosubscriber_t,
                    ompi_comm_construct,
                    ompi_comm_destruct);
 

ompi/communicator/communicator.h

@@ -20,6 +20,7 @@
  * Copyright (c) 2014-2015 Intel, Inc.  All rights reserved.
  * Copyright (c) 2015      Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
+ * Copyright (c) 2016 IBM Corp.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -32,6 +33,8 @@
 
 #include "ompi_config.h"
 #include "opal/class/opal_object.h"
+#include "opal/class/opal_hash_table.h"
+#include "opal/util/info_subscriber.h"
 #include "ompi/errhandler/errhandler.h"
 #include "opal/threads/mutex.h"
 #include "ompi/communicator/comm_request.h"
@@ -115,7 +118,7 @@ OMPI_DECLSPEC extern opal_pointer_array_t ompi_mpi_communicators;
 OMPI_DECLSPEC extern opal_pointer_array_t ompi_comm_f_to_c_table;
 
 struct ompi_communicator_t {
-    opal_object_t              c_base;
+    opal_infosubscriber_t      super;
     opal_mutex_t               c_lock; /* mutex for name and potentially
                                           attributes */
     char  c_name[MPI_MAX_OBJECT_NAME];
@@ -420,7 +423,7 @@ OMPI_DECLSPEC int ompi_comm_split (ompi_communicator_t *comm, int color, int key
  */
 OMPI_DECLSPEC int ompi_comm_split_type(ompi_communicator_t *comm,
                                        int split_type, int key,
-                                       struct ompi_info_t *info,
+                                       struct opal_info_t *info,
                                        ompi_communicator_t** newcomm);
 
 /**
@@ -451,7 +454,7 @@ OMPI_DECLSPEC int ompi_comm_idup (ompi_communicator_t *comm, ompi_communicator_t
  * @param comm:      input communicator
  * @param newcomm:   the new communicator or MPI_COMM_NULL if any error is detected.
  */
-OMPI_DECLSPEC int ompi_comm_dup_with_info (ompi_communicator_t *comm, ompi_info_t *info, ompi_communicator_t **newcomm);
+OMPI_DECLSPEC int ompi_comm_dup_with_info (ompi_communicator_t *comm, opal_info_t *info, ompi_communicator_t **newcomm);
 
 /**
  * dup a communicator (non-blocking) with info.
@@ -461,7 +464,7 @@ OMPI_DECLSPEC int ompi_comm_dup_with_info (ompi_communicator_t *comm, ompi_info_
  * @param comm:      input communicator
  * @param newcomm:   the new communicator or MPI_COMM_NULL if any error is detected.
  */
-OMPI_DECLSPEC int ompi_comm_idup_with_info (ompi_communicator_t *comm, ompi_info_t *info, ompi_communicator_t **newcomm, ompi_request_t **req);
+OMPI_DECLSPEC int ompi_comm_idup_with_info (ompi_communicator_t *comm, opal_info_t *info, ompi_communicator_t **newcomm, ompi_request_t **req);
 
 /**
  * compare two communicators.

ompi/debuggers/ompi_mpihandles_dll.c

@@ -5,6 +5,7 @@
  *                         reserved.
  * Copyright (c) 2008      Sun Microsystems, Inc.  All rights reserved.
  * Copyright (c) 2012-2013 Inria.  All rights reserved.
+ * Copyright (c) 2016 IBM Corp.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -234,7 +235,7 @@ int mpidbg_init_per_image(mqs_image *image, const mqs_image_callbacks *icb,
         mqs_find_type(image, "ompi_file_t", mqs_lang_c);
     handle_types->hi_c_group = i_info->ompi_group_t.type;
     handle_types->hi_c_info =
-        mqs_find_type(image, "ompi_info_t", mqs_lang_c);
+        mqs_find_type(image, "opal_info_t", mqs_lang_c);
     /* JMS: "MPI_Offset" is a typedef (see comment about MPI_Aint above) */
     handle_types->hi_c_offset =
         mqs_find_type(image, "MPI_Offset", mqs_lang_c);

ompi/debuggers/predefined_gap_test.c

@@ -5,6 +5,7 @@
  *                         of Tennessee Research Foundation.  All rights
  *                         reserved.
  * Copyright (c) 2012-2013 Inria.  All rights reserved.
+ * Copyright (c) 2016 IBM Corp.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -52,8 +53,8 @@ int main(int argc, char **argv) {
     /* Test Predefined communicator sizes */
     printf("ompi_predefined_communicator_t = %lu bytes\n", sizeof(ompi_predefined_communicator_t));
     printf("ompi_communicator_t = %lu bytes\n", sizeof(ompi_communicator_t));
-    GAP_CHECK("c_base", test_comm, c_base, c_base, 0);
-    GAP_CHECK("c_lock", test_comm, c_lock, c_base, 1);
+    GAP_CHECK("c_base", test_comm, super, super, 0);
+    GAP_CHECK("c_lock", test_comm, c_lock, super, 1);
     GAP_CHECK("c_name", test_comm, c_name, c_lock, 1);
     GAP_CHECK("c_contextid", test_comm, c_contextid, c_name, 1);
     GAP_CHECK("c_my_rank", test_comm, c_my_rank, c_contextid, 1);
@@ -120,8 +121,8 @@ int main(int argc, char **argv) {
     printf("=============================================\n");
     printf("ompi_predefined_win_t = %lu bytes\n", sizeof(ompi_predefined_win_t));
     printf("ompi_win_t = %lu bytes\n", sizeof(ompi_win_t));
-    GAP_CHECK("w_base", test_win, w_base, w_base, 0);
-    GAP_CHECK("w_lock", test_win, w_lock, w_base, 1);
+    GAP_CHECK("super", test_win, super, super, 0);
+    GAP_CHECK("w_lock", test_win, w_lock, super, 1);
     GAP_CHECK("w_name", test_win, w_name, w_lock, 1);
     GAP_CHECK("w_group", test_win, w_group, w_name, 1);
     GAP_CHECK("w_flags", test_win, w_flags, w_group, 1);
@@ -137,8 +138,7 @@ int main(int argc, char **argv) {
     printf("ompi_info_t = %lu bytes\n", sizeof(ompi_info_t));
     GAP_CHECK("super", test_info, super, super, 0);
     GAP_CHECK("i_f_to_c_index", test_info, i_f_to_c_index, super, 1);
-    GAP_CHECK("i_lock", test_info, i_lock, i_f_to_c_index, 1);
-    GAP_CHECK("i_freed", test_info, i_freed, i_lock, 1);
+    GAP_CHECK("i_freed", test_info, i_freed, i_f_to_c_index, 1);
 
     /* Test Predefined file sizes */
     printf("=============================================\n");
@@ -148,8 +148,7 @@ int main(int argc, char **argv) {
     GAP_CHECK("f_comm", test_file, f_comm, super, 1);
     GAP_CHECK("f_filename", test_file, f_filename, f_comm, 1);
     GAP_CHECK("f_amode", test_file, f_amode,  f_filename, 1);
-    GAP_CHECK("f_info", test_file, f_info, f_amode,  1);
-    GAP_CHECK("f_flags", test_file, f_flags, f_info,  1);
+    GAP_CHECK("f_flags", test_file, f_flags, f_amode,  1);
     GAP_CHECK("f_f_to_c_index", test_file, f_f_to_c_index, f_flags, 1);
     GAP_CHECK("error_handler", test_file, error_handler, f_f_to_c_index, 1);
     GAP_CHECK("errhandler_type", test_file, errhandler_type, error_handler, 1);