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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* Copyright (C) 2004 University of Chicago.
* See COPYRIGHT notice in top-level directory.
*/
#include "mpioimpl.h"
/* Hooks for allocation of MPI_File handles.
*
* Three functions are used in ROMIO for allocation/deallocation
* of MPI_File structures:
* - MPIO_File_create(size)
* - MPIO_File_resolve(mpi_fh)
* - MPIO_File_free(mpi_fh)
*
*/
MPI_File MPIO_File_create(int size)
{
MPI_File mpi_fh;
mpi_fh = (MPI_File) ADIOI_Calloc(size,1);
return mpi_fh;
}
ADIO_File MPIO_File_resolve(MPI_File mpi_fh)
{
return mpi_fh;
}
void MPIO_File_free(MPI_File *mpi_fh)
{
ADIOI_Free(*mpi_fh);
*mpi_fh = MPI_FILE_NULL;
}
extern ADIO_File *ADIOI_Ftable;
extern int ADIOI_Ftable_ptr;
extern int ADIOI_Ftable_max;
MPI_File MPIO_File_f2c(MPI_Fint fh)
{
#ifndef INT_LT_POINTER
return (MPI_File) ((void *) fh);
/* the extra cast is to get rid of a compiler warning on Exemplar.
The warning is because MPI_File points to a structure containing
longlongs, which may be 8-byte aligned. But MPI_Fint itself
may not be 8-byte aligned.*/
#else
if (!fh) return MPI_FILE_NULL;
if ((fh < 0) || (fh > ADIOI_Ftable_ptr)) {
FPRINTF(stderr, "MPI_File_f2c: Invalid file handle\n");
/* there is no way to return an error from MPI_File_f2c */
return MPI_FILE_NULL;
}
return ADIOI_Ftable[fh];
#endif
}
MPI_Fint MPIO_File_c2f(MPI_File fh)
{
#ifndef INT_LT_POINTER
return (MPI_Fint) fh;
#else
int i;
if ((fh <= (MPI_File) 0) || (fh->cookie != ADIOI_FILE_COOKIE))
return (MPI_Fint) 0;
if (!ADIOI_Ftable) {
ADIOI_Ftable_max = 1024;
ADIOI_Ftable = (MPI_File *)
ADIOI_Malloc(ADIOI_Ftable_max*sizeof(MPI_File));
ADIOI_Ftable_ptr = 0; /* 0 can't be used though, because
MPI_FILE_NULL=0 */
for (i=0; i<ADIOI_Ftable_max; i++) ADIOI_Ftable[i] = MPI_FILE_NULL;
}
if (ADIOI_Ftable_ptr == ADIOI_Ftable_max-1) {
ADIOI_Ftable = (MPI_File *) ADIOI_Realloc(ADIOI_Ftable,
(ADIOI_Ftable_max+1024)*sizeof(MPI_File));
for (i=ADIOI_Ftable_max; i<ADIOI_Ftable_max+1024; i++)
ADIOI_Ftable[i] = MPI_FILE_NULL;
ADIOI_Ftable_max += 1024;
}
ADIOI_Ftable_ptr++;
ADIOI_Ftable[ADIOI_Ftable_ptr] = fh;
return (MPI_Fint) ADIOI_Ftable_ptr;
#endif
}
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