Fix PMPI_Error_string.

[simgrid.git] / src / smpi / bindings / smpi_pmpi.cpp

diff --git a/src/smpi/bindings/smpi_pmpi.cpp b/src/smpi/bindings/smpi_pmpi.cpp
index 49b2b37..933894a 100644 (file)
--- a/src/smpi/bindings/smpi_pmpi.cpp
+++ b/src/smpi/bindings/smpi_pmpi.cpp
@@ -10,7 +10,7 @@
 #include "smpi_comm.hpp"
 #include "smpi_datatype_derived.hpp"
 #include "smpi_status.hpp"
-#include "src/simix/ActorImpl.hpp"
+#include "src/kernel/actor/ActorImpl.hpp"
 #include "src/smpi/include/smpi_actor.hpp"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_pmpi, smpi, "Logging specific to SMPI (pmpi)");
@@ -31,7 +31,7 @@ void TRACE_smpi_set_category(const char *category)
 
 /* PMPI User level calls */
 
-int PMPI_Init(int *argc, char ***argv)
+int PMPI_Init(int*, char***)
 {
   xbt_assert(simgrid::s4u::Engine::is_initialized(),
              "Your MPI program was not properly initialized. The easiest is to use smpirun to start it.");
@@ -142,7 +142,7 @@ double PMPI_Wtick()
   return sg_maxmin_precision;
 }
 
-int PMPI_Address(void *location, MPI_Aint * address)
+int PMPI_Address(const void* location, MPI_Aint* address)
 {
   if (address==nullptr) {
     return MPI_ERR_ARG;
@@ -152,7 +152,7 @@ int PMPI_Address(void *location, MPI_Aint * address)
   }
 }
 
-int PMPI_Get_address(void *location, MPI_Aint * address)
+int PMPI_Get_address(const void *location, MPI_Aint * address)
 {
   return PMPI_Address(location, address);
 }
@@ -167,7 +167,7 @@ int PMPI_Get_processor_name(char *name, int *resultlen)
   return MPI_SUCCESS;
 }
 
-int PMPI_Get_count(MPI_Status * status, MPI_Datatype datatype, int *count)
+int PMPI_Get_count(const MPI_Status * status, MPI_Datatype datatype, int *count)
 {
   if (status == nullptr || count == nullptr) {
     return MPI_ERR_ARG;
@@ -214,17 +214,16 @@ int PMPI_Error_class(int errorcode, int* errorclass) {
   return MPI_SUCCESS;
 }
 
-int PMPI_Error_string(int errorcode, char* string, int* resultlen){
-  if (errorcode<0 || string ==nullptr){
+int PMPI_Error_string(int errorcode, char* string, int* resultlen)
+{
+  static const char* smpi_error_string[] = {FOREACH_ERROR(GENERATE_STRING)};
+  constexpr int nerrors                  = (sizeof smpi_error_string) / (sizeof smpi_error_string[0]);
+  if (errorcode < 0 || errorcode >= nerrors || string == nullptr)
     return MPI_ERR_ARG;
-  } else {
-    static const char *smpi_error_string[] = {
-      FOREACH_ERROR(GENERATE_STRING)
-    };
-    *resultlen = strlen(smpi_error_string[errorcode]);
-    strncpy(string, smpi_error_string[errorcode], *resultlen);
-    return MPI_SUCCESS;  
-  }
+
+  int len    = snprintf(string, MPI_MAX_ERROR_STRING, "%s", smpi_error_string[errorcode]);
+  *resultlen = std::min(len, MPI_MAX_ERROR_STRING - 1);
+  return MPI_SUCCESS;
 }
 
 int PMPI_Keyval_create(MPI_Copy_function* copy_fn, MPI_Delete_function* delete_fn, int* keyval, void* extra_state) {