Charm++: Charm Source Code Documentation

00001 /* -*- Mode: C; c-basic-offset:4 ; -*- */
00002 /* 
00003  *
00004  *   Copyright (C) 1997 University of Chicago. 
00005  *   See COPYRIGHT notice in top-level directory.
00006  */
00007 
00008 #include "ad_pvfs.h"
00009 
00010 void ADIOI_PVFS_Resize(ADIO_File fd, ADIO_Offset size, int *error_code)
00011 {
00012     int err;
00013     int rank;
00014     static char myname[] = "ADIOI_PVFS_RESIZE";
00015 
00016     /* because MPI_File_set_size is a collective operation, and PVFS1 clients
00017      * do not cache metadata locally, one client can resize and broadcast the
00018      * result to the others */
00019     MPI_Comm_rank(fd->comm, &rank);
00020     if (rank == fd->hints->ranklist[0]) {
00021     err = pvfs_ftruncate64(fd->fd_sys, size);
00022     }
00023     MPI_Bcast(&err, 1, MPI_INT, fd->hints->ranklist[0], fd->comm);
00024 
00025     if (err == -1) {
00026     *error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
00027                        myname, __LINE__, MPI_ERR_IO,
00028                        "**io",
00029                        "**io %s", strerror(errno));
00030     }
00031     else *error_code = MPI_SUCCESS;
00032 }
libs/ck-libs/ampi/romio/adio/ad_pvfs/ad_pvfs_resize.c
