sion_mpi.h

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/****************************************************************************
**  SIONLIB     http://www.fz-juelich.de/jsc/sionlib                       **
*****************************************************************************
**  Copyright (c) 2008-2016                                                **
**  Forschungszentrum Juelich, Juelich Supercomputing Centre               **
**                                                                         **
**  See the file COPYRIGHT in the package base directory for details       **
****************************************************************************/

#ifndef SION_SION_MPI
#define SION_SION_MPI

#ifdef MPI_VERSION
#include "sion_datatypes_mpi.h"

#ifdef __cplusplus
extern "C" {
#endif
  int sion_paropen_mpi(    const char     *fname,
               const char     *file_mode,
               int            *numFiles,
               MPI_Comm        gComm,
               const MPI_Comm *lComm,
               sion_int64     *chunksize,
               sion_int32     *fsblksize,
               int            *globalrank,
               FILE          **fileptr,
               char          **newfname);

  int sion_parclose_mpi(   int      sid  );
  int sion_parreinit_mpi(  int sid,
               sion_int64 chunksize );

/* new mapped functions */

/* open function:
   write-mode:
     if numFiles > 1  --> mapping_filenrs, mapping_lranks contains local mappping
    */

  int sion_paropen_mapped_mpi(    char          *fname,
                  const char    *file_mode,
                  int           *numFiles,
                  MPI_Comm       gComm,
                  int           *nlocaltasks,
                  int          **globalranks,
                  sion_int64   **chunksizes,
                  int          **mapping_filenrs, 
                  int          **mapping_lranks,
                  sion_int32    *fsblksize,
                  FILE         **fileptr);

  int sion_parclose_mapped_mpi(   int      sid  );

  /* Serialization */
  int sion_startof_transaction_mpi(   int      sid  );
  int sion_endof_transaction_mpi  (   int      sid  );
  size_t sion_coll_fwrite_mpi(const void *data, size_t size, size_t nitems, int sid);
  size_t sion_coll_fread_mpi( void *data, size_t size, size_t nitems, int sid);

  /* for backward compatibility */
  int sion_paropen_comms_mpi(char *fname,
                 const char *file_mode,
                 int *numFiles,
                 MPI_Comm gComm,
                 MPI_Comm lComm, sion_int64 *chunksize, sion_int32 *fsblksize, int *globalrank, FILE **fileptr, char *newfname);
  int sion_paropen_multi_mpi(char *fname,
                 const char *file_mode,
                 int *numFiles,
                 MPI_Comm gComm,
                 MPI_Comm *lComm, sion_int64 *chunksize, sion_int32 *fsblksize, int *globalrank, FILE **fileptr, char *newfname);

  /* for file check */
  typedef struct _sion_file_check_par_args_mpi_struct sion_file_check_par_args_mpi;
  sion_file_check_par_args_mpi *sion_file_check_par_args_init_mpi( const char     *file_mode,
                                   MPI_Comm        gComm, 
                                   int             numfiles, 
                                   MPI_Comm        lComm 
                                   );
  int sion_file_check_par_args_free_mpi( sion_file_check_par_args_mpi *args );
  int sion_file_check_par_cb_mpi( char *fname, void *args );

#ifdef __cplusplus
}
#endif
  
#else 
  #define sion_paropen_mpi "sion_paropen_mpi not defined if mpi.h not included, please include mpi.h before including sion_mpi.h"
#endif


#endif