backend_mpi.h

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/*
 * @file backend_mpi.h
 *
 * @copyright Copyright (C) 2024 Enrico Degregori <enrico.degregori@gmail.com>
 *
 * @author Enrico Degregori <enrico.degregori@gmail.com>
 *
 * 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 copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR 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.
 */
 
#ifndef BACKEND_MPI_H
#define BACKEND_MPI_H
 
#include "mpi.h"
 
typedef void (*kernel_backend_func_wait) (int, MPI_Request *, MPI_Status *);
 
typedef void (*kernel_func_isendirecv) ( void *, int , MPI_Datatype, int, int,
                                    MPI_Comm, MPI_Request *, int ) ;
 
typedef void (*kernel_func_recv)  ( void *, int, MPI_Datatype, int, int,
                                    MPI_Comm, MPI_Status * , int) ;
 
struct t_mpi_exchange {
    MPI_Datatype type;
    MPI_Aint type_size;
    MPI_Request *req;
    MPI_Status *stat;
    int nreq_send;
    int nreq_recv;
    kernel_backend_func_wait wait;
    kernel_func_isendirecv isend;
    kernel_func_isendirecv irecv;
    kernel_func_recv recv;
};
typedef struct t_mpi_exchange t_mpi_exchange;
 
t_mpi_exchange * new_mpi_exchanger(MPI_Datatype  type, int size);
 
void delete_mpi_exchanger(t_mpi_exchange *mpi_exchange);
 
void mpi_wrapper_isend_int(int *buffer, int count, MPI_Datatype datatype, int dest, int tag,
                           MPI_Comm comm, MPI_Request *request, int offset);
 
void mpi_wrapper_isend_float(float *buffer, int count, MPI_Datatype datatype, int dest, int tag,
                             MPI_Comm comm, MPI_Request *request, int offset);
 
void mpi_wrapper_isend_double(double *buffer, int count, MPI_Datatype datatype, int dest, int tag,
                              MPI_Comm comm, MPI_Request *request, int offset);
 
void mpi_wrapper_irecv_int(int *buffer, int count, MPI_Datatype datatype, int source, int tag,
                           MPI_Comm comm, MPI_Request *request, int offset);
 
void mpi_wrapper_irecv_float(float *buffer, int count, MPI_Datatype datatype, int source, int tag,
                             MPI_Comm comm, MPI_Request *request, int offset);
 
void mpi_wrapper_irecv_double(double *buffer, int count, MPI_Datatype datatype, int source, int tag,
                              MPI_Comm comm, MPI_Request *request, int offset);
 
void mpi_wrapper_recv_int(int *buffer, int count, MPI_Datatype datatype, int source, int tag,
                          MPI_Comm comm, MPI_Status *status, int offset);
 
void mpi_wrapper_recv_float(float *buffer, int count, MPI_Datatype datatype, int source, int tag,
                            MPI_Comm comm, MPI_Status *status, int offset);
 
void mpi_wrapper_recv_double(double *buffer, int count, MPI_Datatype datatype, int source, int tag,
                             MPI_Comm comm, MPI_Status *status, int offset);
 
void mpi_wrapper_waitall(int count, MPI_Request *requests, MPI_Status *statuses);
 
#endif