+int PMPI_Info_get_nthkey( MPI_Info info, int n, char *key){
+ if (info == NULL || key==NULL || n<0 || n> MPI_MAX_INFO_KEY)
+ return MPI_ERR_ARG;
+
+ xbt_dict_cursor_t cursor = NULL;
+ char *keyn;
+ void* data;
+ int num=0;
+ xbt_dict_foreach(info->info_dict,cursor,keyn,data){
+ if(num==n){
+ strcpy(key,keyn);
+ return MPI_SUCCESS;
+ }
+ num++;
+ }
+ return MPI_ERR_ARG;
+}
+
+int PMPI_Info_get_valuelen( MPI_Info info, char *key, int *valuelen, int *flag){
+ if (info == NULL || key == NULL || valuelen <0)
+ return MPI_ERR_ARG;
+ *flag=FALSE;
+ char* tmpvalue=(char*)xbt_dict_get_or_null(info->info_dict, key);
+ if(tmpvalue){
+ *valuelen=strlen(tmpvalue);
+ *flag=TRUE;
+ }
+ return MPI_SUCCESS;
+}
+
+int PMPI_Unpack(void* inbuf, int incount, int* position, void* outbuf, int outcount, MPI_Datatype type, MPI_Comm comm) {
+ if(incount<0 || outcount < 0 || inbuf==NULL || outbuf==NULL)
+ return MPI_ERR_ARG;
+ if(!is_datatype_valid(type))
+ return MPI_ERR_TYPE;
+ if(comm==MPI_COMM_NULL)
+ return MPI_ERR_COMM;
+ return smpi_mpi_unpack(inbuf, incount, position, outbuf,outcount,type, comm);
+}
+
+int PMPI_Pack(void* inbuf, int incount, MPI_Datatype type, void* outbuf, int outcount, int* position, MPI_Comm comm) {
+ if(incount<0 || outcount < 0|| inbuf==NULL || outbuf==NULL)
+ return MPI_ERR_ARG;
+ if(!is_datatype_valid(type))
+ return MPI_ERR_TYPE;
+ if(comm==MPI_COMM_NULL)
+ return MPI_ERR_COMM;
+ return smpi_mpi_pack(inbuf, incount, type, outbuf,outcount,position, comm);