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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpioimpl.h"
#ifdef HAVE_WEAK_SYMBOLS
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_File_set_size = PMPI_File_set_size
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_File_set_size MPI_File_set_size
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_File_set_size as PMPI_File_set_size
/* end of weak pragmas */
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_File_set_size(MPI_File fh, MPI_Offset size)
__attribute__ ((weak, alias("PMPI_File_set_size")));
#endif
/* Include mapping from MPI->PMPI */
#define MPIO_BUILD_PROFILING
#include "mpioprof.h"
#endif
/*@
MPI_File_set_size - Sets the file size
Input Parameters:
. fh - file handle (handle)
. size - size to truncate or expand file (nonnegative integer)
.N fortran
@*/
int MPI_File_set_size(MPI_File fh, MPI_Offset size)
{
int error_code;
ADIO_File adio_fh;
static char myname[] = "MPI_FILE_SET_SIZE";
MPI_Offset tmp_sz, max_sz, min_sz;
#ifdef MPI_hpux
int fl_xmpi;
HPMP_IO_START(fl_xmpi, BLKMPIFILESETSIZE, TRDTBLOCK, adio_fh, MPI_DATATYPE_NULL, -1);
#endif /* MPI_hpux */
ROMIO_THREAD_CS_ENTER();
adio_fh = MPIO_File_resolve(fh);
/* --BEGIN ERROR HANDLING-- */
MPIO_CHECK_FILE_HANDLE(adio_fh, myname, error_code);
MPIO_CHECK_NOT_SEQUENTIAL_MODE(adio_fh, myname, error_code);
if (size < 0) {
error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
myname, __LINE__, MPI_ERR_ARG, "**iobadsize", 0);
error_code = MPIO_Err_return_file(adio_fh, error_code);
goto fn_exit;
}
MPIO_CHECK_WRITABLE(fh, myname, error_code);
/* --END ERROR HANDLING-- */
tmp_sz = size;
MPI_Allreduce(&tmp_sz, &max_sz, 1, ADIO_OFFSET, MPI_MAX, adio_fh->comm);
MPI_Allreduce(&tmp_sz, &min_sz, 1, ADIO_OFFSET, MPI_MIN, adio_fh->comm);
/* --BEGIN ERROR HANDLING-- */
if (max_sz != min_sz) {
error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
myname, __LINE__, MPI_ERR_ARG, "**notsame", 0);
error_code = MPIO_Err_return_file(adio_fh, error_code);
goto fn_exit;
}
/* --END ERROR HANDLING-- */
if (!ADIO_Feature(adio_fh, ADIO_SCALABLE_RESIZE)) {
/* rare stupid file systems (like NFS) need to carry out resize on all
* processes */
ADIOI_TEST_DEFERRED(adio_fh, "MPI_File_set_size", &error_code);
}
ADIO_Resize(adio_fh, size, &error_code);
/* TODO: what to do with error code? */
/* --BEGIN ERROR HANDLING-- */
if (error_code != MPI_SUCCESS)
error_code = MPIO_Err_return_file(adio_fh, error_code);
/* --END ERROR HANDLING-- */
#ifdef MPI_hpux
HPMP_IO_END(fl_xmpi, adio_fh, MPI_DATATYPE_NULL, -1);
#endif /* MPI_hpux */
fn_exit:
ROMIO_THREAD_CS_EXIT();
return error_code;
}
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