coll/libnbc: revisit NBC_Handle usage

make NBC_Handle (almost) an internal structure created
by NBC_Schedule_request()
use a local variable instead of what was previously handle->tmpbuf

Refs #3487

Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp>

(back-ported from commit 9ba85b8)

ompi/mca/coll/libnbc/Makefile.am

@@ -12,6 +12,8 @@
 # Copyright (c) 2010      Cisco Systems, Inc.  All rights reserved.
 # Copyright (c) 2013      Los Alamos National Security, LLC. All rights
 #                         reserved.
+# Copyright (c) 2017      Research Organization for Information Science
+#                         and Technology (RIST). All rights reserved.
 # $COPYRIGHT$
 #
 # Additional copyrights may follow
@@ -37,7 +39,6 @@ sources = \
 	nbc_ialltoallw.c \
 	nbc_ibarrier.c \
 	nbc_ibcast.c \
-	nbc_ibcast_inter.c \
 	nbc_iexscan.c \
 	nbc_igather.c \
 	nbc_igatherv.c \

ompi/mca/coll/libnbc/nbc.c

@@ -10,7 +10,7 @@
  *                         rights reserved.
  * Copyright (c) 2015      Los Alamos National Security, LLC.  All rights
  *                         reserved.
- * Copyright (c) 2015-2016 Research Organization for Information Science
+ * Copyright (c) 2015-2017 Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
  *
  * Author(s): Torsten Hoefler <htor@cs.indiana.edu>
@@ -709,6 +709,25 @@ int NBC_Start(NBC_Handle *handle, NBC_Schedule *schedule) {
   return OMPI_SUCCESS;
 }
 
+int NBC_Schedule_request(NBC_Schedule *schedule, ompi_communicator_t *comm, ompi_coll_libnbc_module_t *module, ompi_request_t **request, void *tmpbuf) {
+  int res;
+  NBC_Handle *handle;
+  res = NBC_Init_handle (comm, &handle, module);
+  if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
+    return res;
+  }
+  handle->tmpbuf = tmpbuf;
+
+  res = NBC_Start (handle, schedule);
+  if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
+    NBC_Return_handle (handle);
+    return res;
+  }
+
+  *request = (ompi_request_t *) handle;
+  return OMPI_SUCCESS;
+}
+
 #ifdef NBC_CACHE_SCHEDULE
 void NBC_SchedCache_args_delete_key_dummy(void *k) {
     /* do nothing because the key and the data element are identical :-)

ompi/mca/coll/libnbc/nbc_iallgather.c

@@ -50,7 +50,6 @@ int ompi_coll_libnbc_iallgather(const void* sendbuf, int sendcount, MPI_Datatype
 #ifdef NBC_CACHE_SCHEDULE
   NBC_Allgather_args *args, *found, search;
 #endif
-  NBC_Handle *handle;
   ompi_coll_libnbc_module_t *libnbc_module = (ompi_coll_libnbc_module_t*) module;
 
   NBC_IN_PLACE(sendbuf, recvbuf, inplace);
@@ -147,20 +146,12 @@ int ompi_coll_libnbc_iallgather(const void* sendbuf, int sendcount, MPI_Datatype
   }
 #endif
 
-  res = NBC_Init_handle (comm, &handle, libnbc_module);
+  res = NBC_Schedule_request(schedule, comm, libnbc_module, request, NULL);
   if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
     OBJ_RELEASE(schedule);
     return res;
   }
 
-  res = NBC_Start (handle, schedule);
-  if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-    OMPI_COLL_LIBNBC_REQUEST_RETURN(handle);
-    return res;
-  }
-
-  *request = (ompi_request_t *) handle;
-
   return OMPI_SUCCESS;
 }
 
@@ -172,7 +163,6 @@ int ompi_coll_libnbc_iallgather_inter(const void* sendbuf, int sendcount, MPI_Da
   MPI_Aint rcvext;
   NBC_Schedule *schedule;
   char *rbuf;
-  NBC_Handle *handle;
   ompi_coll_libnbc_module_t *libnbc_module = (ompi_coll_libnbc_module_t*) module;
 
   res = ompi_datatype_type_extent(recvtype, &rcvext);
@@ -213,19 +203,11 @@ int ompi_coll_libnbc_iallgather_inter(const void* sendbuf, int sendcount, MPI_Da
     return res;
   }
 
-  res = NBC_Init_handle (comm, &handle, libnbc_module);
+  res = NBC_Schedule_request(schedule, comm, libnbc_module, request, NULL);
   if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
     OBJ_RELEASE(schedule);
     return res;
   }
 
-  res = NBC_Start (handle, schedule);
-  if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-    OMPI_COLL_LIBNBC_REQUEST_RETURN(handle);
-    return res;
-  }
-
-  *request = (ompi_request_t *) handle;
-
   return OMPI_SUCCESS;
 }

ompi/mca/coll/libnbc/nbc_iallgatherv.c

@@ -11,7 +11,7 @@
  * Copyright (c) 2012      Oracle and/or its affiliates.  All rights reserved.
  * Copyright (c) 2013-2015 Los Alamos National Security, LLC. All rights
  *                         reserved.
- * Copyright (c) 2014-2016 Research Organization for Information Science
+ * Copyright (c) 2014-2017 Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
  *
  */
@@ -37,7 +37,6 @@ int ompi_coll_libnbc_iallgatherv(const void* sendbuf, int sendcount, MPI_Datatyp
   MPI_Aint rcvext;
   NBC_Schedule *schedule;
   char *rbuf, *sbuf, inplace;
-  NBC_Handle *handle;
   ompi_coll_libnbc_module_t *libnbc_module = (ompi_coll_libnbc_module_t*) module;
 
   NBC_IN_PLACE(sendbuf, recvbuf, inplace);
@@ -96,20 +95,12 @@ int ompi_coll_libnbc_iallgatherv(const void* sendbuf, int sendcount, MPI_Datatyp
     return res;
   }
 
-  res = NBC_Init_handle (comm, &handle, libnbc_module);
+  res = NBC_Schedule_request (schedule, comm, libnbc_module, request, NULL);
   if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
     OBJ_RELEASE(schedule);
     return res;
   }
 
-  res = NBC_Start (handle, schedule);
-  if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-    NBC_Return_handle (handle);
-    return res;
-  }
-
-  *request = (ompi_request_t *) handle;
-
   return OMPI_SUCCESS;
 }
 
@@ -120,7 +111,6 @@ int ompi_coll_libnbc_iallgatherv_inter(const void* sendbuf, int sendcount, MPI_D
   int res, rsize;
   MPI_Aint rcvext;
   NBC_Schedule *schedule;
-  NBC_Handle *handle;
   ompi_coll_libnbc_module_t *libnbc_module = (ompi_coll_libnbc_module_t*) module;
 
   rsize = ompi_comm_remote_size (comm);
@@ -165,19 +155,11 @@ int ompi_coll_libnbc_iallgatherv_inter(const void* sendbuf, int sendcount, MPI_D
     return res;
   }
 
-  res = NBC_Init_handle (comm, &handle, libnbc_module);
+  res = NBC_Schedule_request(schedule, comm, libnbc_module, request, NULL);
   if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
     OBJ_RELEASE(schedule);
     return res;
   }
 
-  res = NBC_Start (handle, schedule);
-  if (OPAL_UNLIKELY(OMPI_SUCCESS != res)) {
-    NBC_Return_handle (handle);
-    return res;
-  }
-
-  *request = (ompi_request_t *) handle;
-
   return OMPI_SUCCESS;
 }