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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* Copyright (C) 1997 University of Chicago.
* See COPYRIGHT notice in top-level directory.
*/
#include "ad_pvfs.h"
void ADIOI_PVFS_Flush(ADIO_File fd, int *error_code)
{
int err, rank, dummy=0, dummy_in=0;
static char myname[] = "ADIOI_PVFS_FLUSH";
/* a collective routine: because we do not cache data in PVFS1, one process
* can initiate the fsync operation and broadcast the result to the others.
* One catch: MPI_File_sync has special meaning with respect to file system
* consistency. Ensure no clients have outstanding write operations.
*/
MPI_Comm_rank(fd->comm, &rank);
MPI_Reduce(&dummy_in, &dummy, 1, MPI_INT, MPI_SUM,
fd->hints->ranklist[0], fd->comm);
if (rank == fd->hints->ranklist[0]) {
err = pvfs_fsync(fd->fd_sys);
}
MPI_Bcast(&err, 1, MPI_INT, fd->hints->ranklist[0], fd->comm);
if (err == -1) {
*error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
myname, __LINE__, MPI_ERR_IO,
"**io",
"**io %s", strerror(errno));
}
else *error_code = MPI_SUCCESS;
}
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