/**
//@HEADER
// ************************************************************************
//
//                   Trios: Trilinos I/O Support
//                 Copyright 2011 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//Questions? Contact Ron A. Oldfield (raoldfi@sandia.gov)
//
// *************************************************************************
//@HEADER
 */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include <mpi.h>

#include "commsplitter.h"



commsplitter_t commsplitter_data;


void commsplitter_getenv(void)
{
    char *envstr=getenv("COMMSPLITTER_DEBUG_LEVEL");
    if (envstr != NULL) {
        commsplitter_data.debug_level=atoi(envstr);
    }
}

void commsplitter_init(char *app_name)
{
    int   hostname_len;
    char  hostname[MPI_MAX_PROCESSOR_NAME];

    commsplitter_data.enabled     = 1;
    commsplitter_data.debug_level = 0;
    commsplitter_data.split_comm  = MPI_COMM_NULL;

    PMPI_Comm_rank(MPI_COMM_WORLD, &commsplitter_data.grank);
    PMPI_Comm_size(MPI_COMM_WORLD, &commsplitter_data.gsize);
    PMPI_Get_processor_name(hostname, &hostname_len);

    commsplitter_getenv();

    if (commsplitter_data.grank == 0) {
        commsplitter_log("\n");
        commsplitter_log("commsplitter initialized\n");
        commsplitter_log("\n");
    }

    commsplitter_log("app_name is %s\n", app_name);
    commsplitter_log("successful init of grank=%d on %s\n", commsplitter_data.grank, hostname);

    return;
}

void commsplitter_fini(void)
{
    return;
}
