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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "ad_panfs.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
void ADIOI_PANFS_Resize(ADIO_File fd, ADIO_Offset size, int *error_code)
{
int err;
int myrank;
struct stat stat_buf;
static char myname[] = "ADIOI_PANFS_RESIZE";
MPI_Comm_rank(fd->comm, &myrank);
if (!myrank) {
AD_PANFS_RETRY(ftruncate(fd->fd_sys, size), err);
MPI_Barrier(fd->comm);
} else {
MPI_Barrier(fd->comm);
AD_PANFS_RETRY(fstat(fd->fd_sys, &stat_buf), err);
if (((ADIO_Offset) stat_buf.st_size) != size) {
/* This should never happen otherwise there is a coherency problem. */
FPRINTF(stderr, "%s: Rank %d: Resize failed: requested=%llu actual=%llu.\n", myname,
myrank, size, (unsigned long long) stat_buf.st_size);
MPI_Abort(MPI_COMM_WORLD, 1);
}
}
/* --BEGIN ERROR HANDLING-- */
if (err == -1) {
*error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
myname, __LINE__, MPI_ERR_IO,
"**io", "**io %s", strerror(errno));
return;
}
/* --END ERROR HANDLING-- */
*error_code = MPI_SUCCESS;
}
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