Esys_MPI.h

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/*******************************************************
*
* Copyright (c) 2003-2010 by University of Queensland
* Earth Systems Science Computational Center (ESSCC)
* http://www.uq.edu.au/esscc
*
* Primary Business: Queensland, Australia
* Licensed under the Open Software License version 3.0
* http://www.opensource.org/licenses/osl-3.0.php
*
*******************************************************/


#ifndef INC_ESYS_MPI
#define INC_ESYS_MPI

#include "system_dep.h"
#include "types.h"

#ifdef ESYS_MPI
   #include "mpi_C.h"
#else
   typedef int MPI_Comm;
   typedef int MPI_Request;
   #define MPI_INT 6
   #define MPI_DOUBLE 11
   #define MPI_COMM_WORLD 91
#endif

typedef int Esys_MPI_rank;

#define ESYS_MPI_TODO   { fprintf( stdout, "\nTODO : %s:%d\n", __FILE__, __LINE__); MPI_Finalize(); exit(1); }

/* Datatypes */
struct Esys_MPIInfo {
  dim_t reference_counter;
  int size;
  Esys_MPI_rank rank;
  MPI_Comm comm;
  int msg_tag_counter;
};

typedef struct Esys_MPIInfo Esys_MPIInfo;

/* Function prototypes */

ESYSUTILS_DLL_API
Esys_MPIInfo* Esys_MPIInfo_alloc( MPI_Comm comm );

ESYSUTILS_DLL_API
void          Esys_MPIInfo_free( Esys_MPIInfo* );

ESYSUTILS_DLL_API
Esys_MPIInfo *Esys_MPIInfo_getReference( Esys_MPIInfo* in );

ESYSUTILS_DLL_API
int           Esys_MPIInfo_initialized( void );

ESYSUTILS_DLL_API
index_t Esys_MPIInfo_mod(index_t n, index_t k);

ESYSUTILS_DLL_API
dim_t Esys_MPIInfo_setDistribution(Esys_MPIInfo* in ,index_t min_id,index_t max_id,index_t* distribution);

ESYSUTILS_DLL_API
void Esys_MPIInfo_Split( Esys_MPIInfo *mpi_info, dim_t n, dim_t* local_N,index_t* offset); 

ESYSUTILS_DLL_API
bool_t Esys_MPIInfo_noError( Esys_MPIInfo *mpi_info);

ESYSUTILS_DLL_API
char *Esys_MPI_appendRankToFileName(const char *, int, int);

#endif /* INC_ESYS_MPI */