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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) 2008-2021 University of Houston. All rights reserved.
* Copyright (c) 2018 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2022 IBM Corporation. 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 ompi_fbtl_posix_max_aio_active_reqs;
OMPI_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);
bool mca_fbtl_posix_check_atomicity ( ompio_file_t *file);
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,
int *lock_counter);
void mca_fbtl_posix_unlock ( struct flock *lock, ompio_file_t *fh, int *lock_counter );
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 */
int aio_lock_counter; /* to keep track of no. of lock calls */
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
#define OMPIO_SET_ATOMICITY_LOCK(_fh, _lock, _lock_counter, _op) { \
int32_t _orig_flags = _fh->f_flags; \
_fh->f_flags &= ~OMPIO_LOCK_NEVER; \
_fh->f_flags &= ~OMPIO_LOCK_NOT_THIS_OP; \
off_t _end_offset = (off_t)_fh->f_io_array[_fh->f_num_of_io_entries-1].offset + \
(off_t)_fh->f_io_array[_fh->f_num_of_io_entries-1].length; \
off_t _len = _end_offset - (off_t)_fh->f_io_array[0].offset; \
int _ret = mca_fbtl_posix_lock ( &_lock, _fh, _op, (off_t)_fh->f_io_array[0].offset, \
_len, OMPIO_LOCK_ENTIRE_REGION, &_lock_counter); \
if ( _ret == -1 ) { \
opal_output(1, "mca_fbtl_posix: error in mca_fbtl_posix_lock():%s", \
strerror(errno)); \
return OMPI_ERROR; \
} \
_fh->f_flags = _orig_flags; }
/*
* ******************************************************************
* ************ functions implemented in this module end ************
* ******************************************************************
*/
END_C_DECLS
#endif /* MCA_FBTL_POSIX_H */
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