X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/a92d7b716f51a53dea7f59db8524d4add713b910..9b5c287fbf93c2ae7c3d18c8584647ef9920fe87:/src/smpi/colls/allgather/allgather-2dmesh.cpp

diff --git a/src/smpi/colls/allgather/allgather-2dmesh.cpp b/src/smpi/colls/allgather/allgather-2dmesh.cpp
index 786b0af042..b6b06fcb6e 100644
--- a/src/smpi/colls/allgather/allgather-2dmesh.cpp
+++ b/src/smpi/colls/allgather/allgather-2dmesh.cpp
@@ -1,10 +1,10 @@
-/* Copyright (c) 2013-2017. The SimGrid Team.
+/* Copyright (c) 2013-2019. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
-#include "../colls_private.h"
+#include "../colls_private.hpp"
 
 /*****************************************************************************
 
@@ -69,7 +69,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 static int is_2dmesh(int num, int *i, int *j)
 {
   int x, max = num / 2;
-  x = sqrt(num);
+  x = sqrt(double(num));
 
   while (x <= max) {
     if ((num % x) == 0) {
@@ -101,7 +101,7 @@ static int is_2dmesh(int num, int *i, int *j)
  * comm: communication
  * Descrp: Function realizes the allgather operation using the 2dmesh
  * algorithm. Allgather ommunication occurs first in the x dimension then in
- * the y dimension.  The communication in each dimension follows 
+ * the y dimension.  The communication in each dimension follows
  * "simple"
  * Auther: Ahmad Faraj
 ****************************************************************************/
@@ -111,11 +111,10 @@ namespace smpi{
 
 
 int
-Coll_allgather_2dmesh::allgather(void *send_buff, int send_count, MPI_Datatype
+Coll_allgather_2dmesh::allgather(const void *send_buff, int send_count, MPI_Datatype
                                  send_type, void *recv_buff, int recv_count,
                                  MPI_Datatype recv_type, MPI_Comm comm)
 {
-  MPI_Request *req, *req_ptr;
   MPI_Aint extent;
 
   int i, src, dst, rank, num_procs;
@@ -131,7 +130,7 @@ Coll_allgather_2dmesh::allgather(void *send_buff, int send_count, MPI_Datatype
   block_size = extent * send_count;
 
   if (not is_2dmesh(num_procs, &X, &Y))
-    THROWF(arg_error,0, "allgather_2dmesh algorithm can't be used with this number of processes! ");
+    throw std::invalid_argument("allgather_2dmesh algorithm can't be used with this number of processes!");
 
   my_row_base = (rank / Y) * Y;
   my_col_base = rank % Y;
@@ -140,11 +139,10 @@ Coll_allgather_2dmesh::allgather(void *send_buff, int send_count, MPI_Datatype
   if (Y > X)
     num_reqs = Y;
 
-  req = (MPI_Request *) xbt_malloc(num_reqs * sizeof(MPI_Request));
+  MPI_Request* req     = new MPI_Request[num_reqs];
+  MPI_Request* req_ptr = req;
 
-  req_ptr = req;
-
-  // do local allgather/local copy 
+  // do local allgather/local copy
   recv_offset = rank * block_size;
   Datatype::copy(send_buff, send_count, send_type, (char *)recv_buff + recv_offset,
                  recv_count, recv_type);
@@ -193,7 +191,7 @@ Coll_allgather_2dmesh::allgather(void *send_buff, int send_count, MPI_Datatype
 
   Request::waitall(X - 1, req, MPI_STATUSES_IGNORE);
 
-  free(req);
+  delete[] req;
 
   return MPI_SUCCESS;
 }