/* -*- 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; }