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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "adio.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
void ADIOI_GEN_Resize(ADIO_File fd, ADIO_Offset size, int *error_code)
{
int err, rank;
static char myname[] = "ADIOI_GEN_RESIZE";
MPI_Comm_rank(fd->comm, &rank);
/* first aggregator performs ftruncate() */
if (rank == fd->hints->ranklist[0]) {
ADIOI_Assert(size == (off_t) size);
err = ftruncate(fd->fd_sys, (off_t) size);
if (err == -1) {
/* detected an error, capture value of errno */
err = errno;
}
}
/* bcast success/errno value */
MPI_Bcast(&err, 1, MPI_INT, fd->hints->ranklist[0], fd->comm);
/* --BEGIN ERROR HANDLING-- */
if (err != 0) {
/* when err is not 0, it contains the errno value from ftruncate */
*error_code = ADIOI_Err_create_code(myname, fd->filename, err);
return;
}
/* --END ERROR HANDLING-- */
*error_code = MPI_SUCCESS;
}
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