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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 "adio.h"
/* set the shared file pointer to "offset" etypes relative to the current
view */
void ADIOI_NFS_Set_shared_fp(ADIO_File fd, ADIO_Offset offset, int *error_code);
void ADIO_Set_shared_fp(ADIO_File fd, ADIO_Offset offset, int *error_code)
{
ADIO_Status status;
MPI_Comm dupcommself;
#ifdef ROMIO_NFS
if (fd->file_system == ADIO_NFS) {
ADIOI_NFS_Set_shared_fp(fd, offset, error_code);
return;
}
#endif
if (fd->shared_fp_fd == ADIO_FILE_NULL) {
MPI_Comm_dup(MPI_COMM_SELF, &dupcommself);
fd->shared_fp_fd = ADIO_Open(MPI_COMM_SELF, dupcommself,
fd->shared_fp_fname,
fd->file_system,
fd->fns,
ADIO_CREATE | ADIO_RDWR | ADIO_DELETE_ON_CLOSE,
0, MPI_BYTE, MPI_BYTE,
MPI_INFO_NULL,
ADIO_PERM_NULL, error_code);
}
if (*error_code != MPI_SUCCESS) return;
ADIOI_WRITE_LOCK(fd->shared_fp_fd, 0, SEEK_SET, sizeof(ADIO_Offset));
ADIO_WriteContig(fd->shared_fp_fd, &offset, sizeof(ADIO_Offset),
MPI_BYTE, ADIO_EXPLICIT_OFFSET, 0, &status, error_code);
ADIOI_UNLOCK(fd->shared_fp_fd, 0, SEEK_SET, sizeof(ADIO_Offset));
}
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