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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2008-2020 University of Houston. All rights reserved.
* Copyright (c) 2018 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef MCA_FBTL_POSIX_H
#define MCA_FBTL_POSIX_H
#include "ompi_config.h"
#include "ompi/mca/mca.h"
#include "ompi/mca/fbtl/fbtl.h"
#include "ompi/mca/common/ompio/common_ompio.h"
#include "ompi/mca/common/ompio/common_ompio_request.h"
extern int mca_fbtl_posix_priority;
extern bool mca_fbtl_posix_read_datasieving;
extern bool mca_fbtl_posix_write_datasieving;
extern size_t mca_fbtl_posix_max_block_size;
extern size_t mca_fbtl_posix_max_gap_size;
extern size_t mca_fbtl_posix_max_tmpbuf_size;
BEGIN_C_DECLS
int mca_fbtl_posix_component_init_query(bool enable_progress_threads,
bool enable_mpi_threads);
struct mca_fbtl_base_module_1_0_0_t *
mca_fbtl_posix_component_file_query (ompio_file_t *file, int *priority);
int mca_fbtl_posix_component_file_unquery (ompio_file_t *file);
int mca_fbtl_posix_module_init (ompio_file_t *file);
int mca_fbtl_posix_module_finalize (ompio_file_t *file);
extern int fbtl_posix_max_aio_active_reqs;
OMPI_MODULE_DECLSPEC extern mca_fbtl_base_component_2_0_0_t mca_fbtl_posix_component;
/*
* ******************************************************************
* ********* functions which are implemented in this module *********
* ******************************************************************
*/
ssize_t mca_fbtl_posix_preadv (ompio_file_t *file );
ssize_t mca_fbtl_posix_pwritev (ompio_file_t *file );
ssize_t mca_fbtl_posix_ipreadv (ompio_file_t *file,
ompi_request_t *request);
ssize_t mca_fbtl_posix_ipwritev (ompio_file_t *file,
ompi_request_t *request);
bool mca_fbtl_posix_progress ( mca_ompio_request_t *req);
void mca_fbtl_posix_request_free ( mca_ompio_request_t *req);
int mca_fbtl_posix_lock ( struct flock *lock, ompio_file_t *fh, int op,
OMPI_MPI_OFFSET_TYPE iov_offset, off_t len, int flags);
void mca_fbtl_posix_unlock ( struct flock *lock, ompio_file_t *fh );
struct mca_fbtl_posix_request_data_t {
int aio_req_count; /* total number of aio reqs */
int aio_open_reqs; /* number of unfinished reqs */
int aio_req_type; /* read or write */
int aio_req_chunks; /* max. no. of aio reqs that can be posted at once*/
int aio_first_active_req; /* first active posted req */
int aio_last_active_req; /* last currently active poted req */
struct aiocb *aio_reqs; /* pointer array of req structures */
int *aio_req_status; /* array of statuses */
ssize_t aio_total_len; /* total amount of data written */
struct flock aio_lock; /* lock used for certain file systems */
ompio_file_t *aio_fh; /* pointer back to the mca_io_ompio_fh structure */
};
typedef struct mca_fbtl_posix_request_data_t mca_fbtl_posix_request_data_t;
/* Right now statically defined, will become a configure check */
#define FBTL_POSIX_HAVE_AIO 1
/* define constants for AIO requests */
#define FBTL_POSIX_READ 1
#define FBTL_POSIX_WRITE 2
/*
* ******************************************************************
* ************ functions implemented in this module end ************
* ******************************************************************
*/
END_C_DECLS
#endif /* MCA_FBTL_POSIX_H */
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