- implemented MPI_MAXLOC & MPI_MINLOC in operations

[simgrid.git] / src / smpi / smpi_mpi.c

diff --git a/src/smpi/smpi_mpi.c b/src/smpi/smpi_mpi.c
index 7bb89d2..3dda18f 100644 (file)
--- a/src/smpi/smpi_mpi.c
+++ b/src/smpi/smpi_mpi.c
@@ -732,6 +732,30 @@ int MPI_Sendrecv_replace(void* buf, int count, MPI_Datatype datatype, int dst, i
   return retval;
 }
 
+int MPI_Get_count(MPI_Status *status, MPI_Datatype datatype, int *count) {
+  int retval;
+/*
+ * Returns the number of entries received. (Again, we count entries, each of type datatype, not bytes.) 
+ * The datatype argument should match the argument provided by the receive call that set the status variable.
+ * If the size of the datatype is zero, this routine will return a count of zero. 
+ * If the amount of data in status is not an exact multiple of the size of datatype 
+ * (so that count would not be integral), a count of MPI_UNDEFINED is returned instead.
+ *
+ */
+  smpi_bench_end(-1, NULL); //FIXME
+
+  if( 0==smpi_datatype_size(datatype)) {
+          // also check that the type is 'committed' when we have MPI_Type_commit (s.g. 23/03/21010)
+           retval = MPI_ERR_TYPE;
+  } else {
+           smpi_mpi_get_count(status, datatype, count);
+           retval = MPI_SUCCESS;
+  }
+  smpi_bench_begin(-1, NULL);
+  return retval;
+}
+
+
 int MPI_Test(MPI_Request* request, int* flag, MPI_Status* status) {
   int retval;
   int rank = request && (*request)->comm != MPI_COMM_NULL
@@ -1072,8 +1096,7 @@ int MPI_Alltoallv(void* sendbuf, int* sendcounts, int* senddisps, MPI_Datatype s
 int MPI_Get_processor_name( char *name, int *resultlen ) {
   int retval = MPI_SUCCESS;
   smpi_bench_end(-1, NULL);
-  strcpy( name , SIMIX_host_get_name(SIMIX_host_self()));
-  name[MPI_MAX_PROCESSOR_NAME-1]='\0';
+  strncpy( name , SIMIX_host_get_name(SIMIX_host_self()), MPI_MAX_PROCESSOR_NAME-1);
   *resultlen= strlen(name) > MPI_MAX_PROCESSOR_NAME ? MPI_MAX_PROCESSOR_NAME : strlen(name);
 
   smpi_bench_begin(-1, NULL);