Source

mpi3-fortran / ompi / mca / io / ompio / io_ompio.h

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
 * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
 *                         University Research and Technology
 *                         Corporation.  All rights reserved.
 * Copyright (c) 2004-2007 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) 2008-2012 University of Houston. All rights reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

#ifndef MCA_IO_OMPIO_H
#define MCA_IO_OMPIO_H

#include <fcntl.h>

#include "mpi.h"
#include "opal/class/opal_list.h"
#include "ompi/errhandler/errhandler.h"
#include "opal/threads/mutex.h"
#include "ompi/file/file.h"
#include "ompi/mca/io/io.h"
#include "ompi/mca/fs/fs.h"
#include "ompi/mca/fcoll/fcoll.h"
#include "ompi/mca/fbtl/fbtl.h"
#include "ompi/mca/sharedfp/sharedfp.h"
#include "ompi/communicator/communicator.h"
#include "ompi/info/info.h"
#include "opal/datatype/opal_convertor.h"
#include "ompi/datatype/ompi_datatype.h"
#include "ompi/request/request.h"

extern int mca_io_ompio_cycle_buffer_size;
extern int mca_io_ompio_bytes_per_agg;
extern int mca_io_ompio_record_offset_info;
OMPI_DECLSPEC extern int mca_io_ompio_coll_timing_info;

/*
 * Flags
 */
#define OMPIO_CONTIGUOUS_MEMORY 0x00000001
#define OMPIO_UNIFORM_FVIEW     0x00000002
#define OMPIO_FILE_IS_OPEN      0x00000004
#define OMPIO_FILE_VIEW_IS_SET  0x00000008
#define OMPIO_CONTIGUOUS_FVIEW  0x00000010
#define OMPIO_AGGREGATOR_IS_SET 0x00000020
#define QUEUESIZE 2048

#define OMPIO_MIN(a, b) (((a) < (b)) ? (a) : (b))
#define OMPIO_MAX(a, b) (((a) < (b)) ? (b) : (a))

/*
 * General values
 */
#define OMPIO_PREALLOC_MAX_BUF_SIZE   33554432
#define OMPIO_PERM_NULL               -1
#define OMPIO_IOVEC_INITIAL_SIZE      100
#define OMPIO_ROOT                    0
#define OMPIO_MAX_NAME                100
#define OMPIO_TAG_GATHER              -100
#define OMPIO_TAG_GATHERV             -101
#define OMPIO_TAG_BCAST               -102
#define OMPIO_TAG_SCATTERV            -103

/* ACCESS MODES --- not needed.. just use MPI_MODE_... */
#define OMPIO_MODE_CREATE              1
#define OMPIO_MODE_RDONLY              2
#define OMPIO_MODE_WRONLY              4
#define OMPIO_MODE_RDWR                8
#define OMPIO_MODE_DELETE_ON_CLOSE    16
#define OMPIO_MODE_UNIQUE_OPEN        32
#define OMPIO_MODE_EXCL               64
#define OMPIO_MODE_APPEND            128
#define OMPIO_MODE_SEQUENTIAL        256

/* PRINT QUEUES*/
#define WRITE_PRINT_QUEUE 1809
#define READ_PRINT_QUEUE 2178
/*---------------------------*/
BEGIN_C_DECLS

enum ompio_fs_type
{
    NONE = 0,
    UFS = 1,
    PVFS2 = 2,
    LUSTRE = 3
};

OMPI_DECLSPEC extern mca_io_base_component_2_0_0_t mca_io_ompio_component;
/*
 * global variables, instantiated in module.c  
 */
extern opal_mutex_t mca_io_ompio_mutex;
extern mca_io_base_module_2_0_0_t mca_io_ompio_module;
OMPI_DECLSPEC extern mca_io_base_component_2_0_0_t mca_io_ompio_component;

typedef struct mca_io_ompio_io_array_t {
    void                 *memory_address;
    /* we need that of type OMPI_MPI_OFFSET_TYPE */
    void                 *offset;
    size_t               length;
    /*mca_io_ompio_server_t io_server;*/
} mca_io_ompio_io_array_t;


typedef struct mca_io_ompio_access_array_t{
    OMPI_MPI_OFFSET_TYPE *offsets;
    int *lens;
    MPI_Aint *mem_ptrs;
    int count;
} mca_io_ompio_access_array_t;

/*Used in extracting offset adj-matrix*/
typedef struct mca_io_ompio_offlen_array_t{
    OMPI_MPI_OFFSET_TYPE offset;
    MPI_Aint             length;
    int                  process_id;
}mca_io_ompio_offlen_array_t;

/*To extract time-information */
typedef struct {
    double time[3];
    int nprocs_for_coll;
    int aggregator;
}print_entry;

typedef struct {
    print_entry entry[QUEUESIZE + 1];
    int first;
    int last;
    int count;
} print_queue;


/**
 * Back-end structure for MPI_File
 */
struct mca_io_ompio_file_t {
    /* General parameters */
    int                    fd;
    struct ompi_file_t    *f_fh;     /* pointer back to the file_t structure */
    OMPI_MPI_OFFSET_TYPE   f_offset; /* byte offset of current position */
    OMPI_MPI_OFFSET_TYPE   f_disp;   /* file_view displacement */
    int                    f_rank;
    int                    f_size;
    int                    f_amode;
    int                    f_perm;
    ompi_communicator_t   *f_comm;
    char                  *f_filename;
    char                  *f_datarep;
    opal_convertor_t      *f_convertor;
    ompi_info_t           *f_info;
    int32_t                f_flags;
    void                  *f_fs_ptr;
    int                    f_atomicity;
    size_t                 f_stripe_size;
    size_t                 f_cc_size;
    int                    f_bytes_per_agg;
    enum ompio_fs_type     f_fstype;

    /* process grouping parameters */
    int *f_procs_in_group;
    int  f_procs_per_group;
    int  f_aggregator_index;

    /* File View parameters */
    struct iovec     *f_decoded_iov;
    uint32_t          f_iov_count;
    ompi_datatype_t  *f_iov_type;
    size_t            f_position_in_file_view; /* in bytes */
    size_t            f_total_bytes; /* total bytes read/written within 1 Fview*/
    int               f_index_in_file_view;
    OPAL_PTRDIFF_TYPE f_view_extent;
    size_t            f_view_size;
    ompi_datatype_t  *f_etype;
    ompi_datatype_t  *f_filetype;
    size_t            f_etype_size;

    /* contains IO requests that needs to be read/written */
    mca_io_ompio_io_array_t *f_io_array;
    int                     f_num_of_io_entries;

    /* Hooks for modules to hang things */
    mca_base_component_t *f_fs_component;
    mca_base_component_t *f_fcoll_component;
    mca_base_component_t *f_fbtl_component;
    mca_base_component_t *f_sharedfp_component;

    /* structure of function pointers */
    mca_fs_base_module_t       *f_fs;
    mca_fcoll_base_module_t    *f_fcoll;
    mca_fbtl_base_module_t     *f_fbtl;
    mca_sharedfp_base_module_t *f_sharedfp;

    /* No Error handling done yet
    struct ompi_errhandler_t *error_handler;
    ompi_errhandler_type_t errhandler_type;
    */
};
typedef struct mca_io_ompio_file_t mca_io_ompio_file_t;

struct mca_io_ompio_data_t {
    mca_io_ompio_file_t ompio_fh;
};
typedef struct mca_io_ompio_data_t mca_io_ompio_data_t;

OMPI_DECLSPEC extern print_queue *coll_write_time;
OMPI_DECLSPEC extern print_queue *coll_read_time;


OMPI_DECLSPEC int ompi_io_ompio_set_file_defaults (mca_io_ompio_file_t *fh);

/*
 * Function that takes in a datatype and buffer, and decodes that datatype
 * into an iovec using the convertor_raw function
 */
OMPI_DECLSPEC int ompi_io_ompio_decode_datatype (mca_io_ompio_file_t *fh, 
                                                 struct ompi_datatype_t *datatype,
                                                 int count,
                                                 void *buf,
                                                 size_t *max_data,
                                                 struct iovec **iov,
                                                 uint32_t *iov_count);

/*
 * Function that sorts an io_array according to the offset by filling 
 * up an array of the indices into the array (HEAP SORT)
 */
OMPI_DECLSPEC int ompi_io_ompio_sort (mca_io_ompio_io_array_t *io_array,
                                      int num_entries,
                                      int *sorted);

OMPI_DECLSPEC int ompi_io_ompio_sort_iovec (struct iovec *iov, 
					    int num_entries, 
					    int *sorted);

OMPI_DECLSPEC int ompi_io_ompio_sort_offlen (mca_io_ompio_offlen_array_t *io_array,
                                             int num_entries,
                                             int *sorted);



OMPI_DECLSPEC int ompi_io_ompio_set_explicit_offset (mca_io_ompio_file_t *fh, 
						     OMPI_MPI_OFFSET_TYPE offset);

OMPI_DECLSPEC int ompi_io_ompio_generate_current_file_view (mca_io_ompio_file_t *fh,
                                                            size_t max_data,
                                                            struct iovec **f_iov,
                                                            int *iov_count);

OMPI_DECLSPEC int ompi_io_ompio_generate_groups (mca_io_ompio_file_t *fh,
                                                 int num_aggregators,
                                                 int *root,
                                                 int *procs_per_group,
                                                 int **ranks);
OMPI_DECLSPEC int ompi_io_ompio_set_aggregator_props (mca_io_ompio_file_t *fh,
                                                      int num_aggregators,
                                                      size_t bytes_per_proc);


OMPI_DECLSPEC int ompi_io_ompio_break_file_view (mca_io_ompio_file_t *fh,
                                                 struct iovec *iov,
                                                 int count,
                                                 int num_aggregators,
                                                 size_t stripe_size,
                                                 struct iovec **broken_iov,
                                                 int *broken_count);

OMPI_DECLSPEC int ompi_io_ompio_distribute_file_view (mca_io_ompio_file_t *fh,
                                                      struct iovec *broken_iov,
                                                      int broken_count,
                                                      int num_aggregators,
                                                      size_t stripe_size,
                                                      int **fview_count,
                                                      struct iovec **iov,
                                                      int *count);

OMPI_DECLSPEC int ompi_io_ompio_gather_data (mca_io_ompio_file_t *fh,
                                             void *send_buf,
                                             size_t total_bytes_sent,
                                             int *bytes_sent,
                                             struct iovec *broken_iovec,
                                             int broken_index,
                                             size_t partial,
                                             void *global_buf,
                                             int *bytes_per_process,
                                             int *displs,
                                             int num_aggregators,
                                             size_t stripe_size);

OMPI_DECLSPEC int ompi_io_ompio_scatter_data (mca_io_ompio_file_t *fh,
                                              void *receive_buf,
                                              size_t total_bytes_recv,
                                              int *bytes_received,
                                              struct iovec *broken_iovec,
                                              int broken_index,
                                              size_t partial,
                                              void *global_buf,
                                              int *bytes_per_process,
                                              int *displs,
                                              int num_aggregators,
                                              size_t stripe_size);


/*
 * Modified versions of Collective operations
 * Based on an array of procs in group
 */
OMPI_DECLSPEC int ompi_io_ompio_gatherv_array (void *sbuf,
                                               int scount,
                                               ompi_datatype_t *sdtype,
                                               void *rbuf,
                                               int *rcounts,
                                               int *disps,
                                               ompi_datatype_t *rdtype,
                                               int root_index,
                                               int *procs_in_group,
                                               int procs_per_group,
                                               ompi_communicator_t *comm);
OMPI_DECLSPEC int ompi_io_ompio_scatterv_array (void *sbuf,
                                                int *scounts,
                                                int *disps,
                                                ompi_datatype_t *sdtype,
                                                void *rbuf,
                                                int rcount,
                                                ompi_datatype_t *rdtype,
                                                int root_index,
                                                int *procs_in_group,
                                                int procs_per_group,
                                                ompi_communicator_t *comm);
OMPI_DECLSPEC int ompi_io_ompio_allgather_array (void *sbuf, 
                                                 int scount,
                                                 ompi_datatype_t *sdtype, 
                                                 void *rbuf,
                                                 int rcount, 
                                                 ompi_datatype_t *rdtype,
                                                 int root_index,
                                                 int *procs_in_group,
                                                 int procs_per_group,
                                                 ompi_communicator_t *comm);
OMPI_DECLSPEC int ompi_io_ompio_allgatherv_array (void *sbuf, 
                                                  int scount,
                                                  ompi_datatype_t *sdtype, 
                                                  void *rbuf,
                                                  int *rcounts, 
                                                  int *disps,
                                                  ompi_datatype_t *rdtype,
                                                  int root_index,
                                                  int *procs_in_group,
                                                  int procs_per_group,
                                                  ompi_communicator_t *comm);
OMPI_DECLSPEC int ompi_io_ompio_gather_array (void *sbuf, 
                                              int scount,
                                              ompi_datatype_t *sdtype,
                                              void *rbuf, 
                                              int rcount,
                                              ompi_datatype_t *rdtype,
                                              int root_index,
                                              int *procs_in_group,
                                              int procs_per_group,
                                              ompi_communicator_t *comm);
OMPI_DECLSPEC int ompi_io_ompio_bcast_array (void *buff, 
                                             int count,
                                             ompi_datatype_t *datatype, 
                                             int root_index,
                                             int *procs_in_group,
                                             int procs_per_group,
                                             ompi_communicator_t *comm);

OMPI_DECLSPEC int ompi_io_ompio_register_print_entry (int queue_type,
						      print_entry x);

OMPI_DECLSPEC int ompi_io_ompio_unregister_print_entry (int queue_type, print_entry *x);

OMPI_DECLSPEC int ompi_io_ompio_empty_print_queue(int queue_type);

OMPI_DECLSPEC int ompi_io_ompio_full_print_queue(int queue_type);

OMPI_DECLSPEC int ompi_io_ompio_initialize_print_queue(print_queue *q);

OMPI_DECLSPEC int ompi_io_ompio_print_time_info(int queue_type,
						char *name_operation,
						mca_io_ompio_file_t *fh);
int ompi_io_ompio_set_print_queue (print_queue **q, 
				   int queue_type);
	       

/*
 * ******************************************************************
 * ********* functions which are implemented in this module *********
 * ******************************************************************
 */ 

int mca_io_ompio_file_set_view (struct ompi_file_t *fh, 
                                OMPI_MPI_OFFSET_TYPE disp, 
                                struct ompi_datatype_t *etype,
                                struct ompi_datatype_t *filetype, 
                                char *datarep,
                                struct ompi_info_t *info);

int mca_io_ompio_set_view_internal (struct mca_io_ompio_file_t *fh, 
				    OMPI_MPI_OFFSET_TYPE disp, 
				    struct ompi_datatype_t *etype,
				    struct ompi_datatype_t *filetype, 
				    char *datarep,
				    struct ompi_info_t *info);

int mca_io_ompio_file_get_view (struct ompi_file_t *fh, 
                                OMPI_MPI_OFFSET_TYPE *disp,
                                struct ompi_datatype_t **etype, 
                                struct ompi_datatype_t **filetype,
                                char *datarep);
int mca_io_ompio_file_open (struct ompi_communicator_t *comm,
                            char *filename,
                            int amode,
                            struct ompi_info_t *info,
                            struct ompi_file_t *fh);
int mca_io_ompio_file_close (struct ompi_file_t *fh);
int mca_io_ompio_file_delete (char *filename,
                              struct ompi_info_t *info);
int mca_io_ompio_file_set_size (struct ompi_file_t *fh,
                                OMPI_MPI_OFFSET_TYPE size);
int mca_io_ompio_file_preallocate (struct ompi_file_t *fh,
                                   OMPI_MPI_OFFSET_TYPE size);
int mca_io_ompio_file_get_size (struct ompi_file_t *fh,
                                OMPI_MPI_OFFSET_TYPE * size);
int mca_io_ompio_file_get_amode (struct ompi_file_t *fh,
                                 int *amode);
int mca_io_ompio_file_set_info (struct ompi_file_t *fh,
                                struct ompi_info_t *info);
int mca_io_ompio_file_get_info (struct ompi_file_t *fh,
                                struct ompi_info_t ** info_used);
int mca_io_ompio_file_sync (struct ompi_file_t *fh);
int mca_io_ompio_file_seek (struct ompi_file_t *fh,
                            OMPI_MPI_OFFSET_TYPE offet,
                            int whence);
/* Section 9.3 */
int mca_io_ompio_file_set_view (struct ompi_file_t *fh,
                                OMPI_MPI_OFFSET_TYPE disp,
                                struct ompi_datatype_t *etype,
                                struct ompi_datatype_t *filetype,
                                char *datarep,
                                struct ompi_info_t *info);
int mca_io_ompio_file_get_view (struct ompi_file_t *fh,
                                OMPI_MPI_OFFSET_TYPE *disp,
                                struct ompi_datatype_t **etype,
                                struct ompi_datatype_t **filetype,
                                char *datarep);

/* Section 9.4.2 */
int mca_io_ompio_file_read_at (struct ompi_file_t *fh,
                               OMPI_MPI_OFFSET_TYPE offset,
                               void *buf,
                               int count,
                               struct ompi_datatype_t *datatype,
                               ompi_status_public_t *status);
int mca_io_ompio_file_read_at_all (struct ompi_file_t *fh,
                                   OMPI_MPI_OFFSET_TYPE offset,
                                   void *buf,
                                   int count,
                                   struct ompi_datatype_t *datatype,
                                   ompi_status_public_t *status);
int mca_io_ompio_file_write_at (struct ompi_file_t *fh,
                                OMPI_MPI_OFFSET_TYPE offset,
                                void *buf,
                                int count,
                                struct ompi_datatype_t *datatype,
                                ompi_status_public_t *status);
int mca_io_ompio_file_write_at_all (struct ompi_file_t *fh,
                                    OMPI_MPI_OFFSET_TYPE offset,
                                    void *buf,
                                    int count,
                                    struct ompi_datatype_t *datatype,
                                    ompi_status_public_t *status);
int mca_io_ompio_file_iread_at (struct ompi_file_t *fh,
                                OMPI_MPI_OFFSET_TYPE offset,
                                void *buf,
                                int count,
                                struct ompi_datatype_t *datatype,
                                ompi_request_t **request);
int mca_io_ompio_file_iwrite_at (struct ompi_file_t *fh,
                                 OMPI_MPI_OFFSET_TYPE offset,
                                 void *buf,
                                 int count,
                                 struct ompi_datatype_t *datatype,
                                 ompi_request_t **request);

/* Section 9.4.3 */
int mca_io_ompio_file_read (struct ompi_file_t *fh,
                            void *buf,
                            int count,
                            struct ompi_datatype_t *datatype,
                            ompi_status_public_t *status);
int mca_io_ompio_file_read_all (struct ompi_file_t *fh,
                                void *buf,
                                int count,
                                struct ompi_datatype_t *datatype,
                                ompi_status_public_t *status);
int mca_io_ompio_file_write (struct ompi_file_t *fh,
                             void *buf,
                             int count,
                             struct ompi_datatype_t *datatype,
                             ompi_status_public_t *status);
int mca_io_ompio_file_write_all (struct ompi_file_t *fh,
                                 void *buf,
                                 int count,
                                 struct ompi_datatype_t *datatype,
                                 ompi_status_public_t *status);
int mca_io_ompio_file_iread (struct ompi_file_t *fh,
                             void *buf,
                             int count,
                             struct ompi_datatype_t *datatype,
                             ompi_request_t **request);
int mca_io_ompio_file_iwrite (struct ompi_file_t *fh,
                              void *buf,
                              int count,
                              struct ompi_datatype_t *datatype,
                              ompi_request_t **request);
int mca_io_ompio_file_seek (struct ompi_file_t *fh,
                            OMPI_MPI_OFFSET_TYPE offset,
                            int whence);
int mca_io_ompio_file_get_position (struct ompi_file_t *fh,
                                    OMPI_MPI_OFFSET_TYPE *offset);
int mca_io_ompio_file_get_byte_offset (struct ompi_file_t *fh,
                                       OMPI_MPI_OFFSET_TYPE offset,
                                       OMPI_MPI_OFFSET_TYPE *disp);
    
/* Section 9.4.4 */
int mca_io_ompio_file_read_shared (struct ompi_file_t *fh,
                                   void *buf,
                                   int count,
                                   struct ompi_datatype_t *datatype,
                                   ompi_status_public_t *status);
int mca_io_ompio_file_write_shared (struct ompi_file_t *fh,
                                    void *buf,
                                    int count,
                                    struct ompi_datatype_t *datatype,
                                    ompi_status_public_t *status);
int mca_io_ompio_file_iread_shared (struct ompi_file_t *fh,
                                    void *buf,
                                    int count,
                                    struct ompi_datatype_t *datatype,
                                    ompi_request_t **request);
int mca_io_ompio_file_iwrite_shared (struct ompi_file_t *fh,
                                     void *buf,
                                     int count,
                                     struct ompi_datatype_t *datatype,
                                     ompi_request_t **request);
int mca_io_ompio_file_read_ordered (struct ompi_file_t *fh,
                                    void *buf,
                                    int count,
                                    struct ompi_datatype_t *datatype,
                                    ompi_status_public_t *status);
int mca_io_ompio_file_write_ordered (struct ompi_file_t *fh,
                                     void *buf,
                                     int count,
                                     struct ompi_datatype_t *datatype,
                                     ompi_status_public_t *status);
int mca_io_ompio_file_seek_shared (struct ompi_file_t *fh,
                                   OMPI_MPI_OFFSET_TYPE offset,
                                   int whence);
int mca_io_ompio_file_get_position_shared (struct ompi_file_t *fh,
                                           OMPI_MPI_OFFSET_TYPE *offset);

/* Section 9.4.5 */
int mca_io_ompio_file_read_at_all_begin (struct ompi_file_t *fh,
                                         OMPI_MPI_OFFSET_TYPE offset,
                                         void *buf,
                                         int count,
                                         struct ompi_datatype_t *datatype);
int mca_io_ompio_file_read_at_all_end (struct ompi_file_t *fh,
                                       void *buf,
                                       ompi_status_public_t *status);
int mca_io_ompio_file_write_at_all_begin (struct ompi_file_t *fh,
                                          OMPI_MPI_OFFSET_TYPE offset,
                                          void *buf,
                                          int count,
                                          struct ompi_datatype_t *datatype);
int mca_io_ompio_file_write_at_all_end (struct ompi_file_t *fh,
                                        void *buf,
                                        ompi_status_public_t *status);
int mca_io_ompio_file_read_all_begin (struct ompi_file_t *fh,
                                      void *buf,
                                      int count,
                                      struct ompi_datatype_t *datatype);
int mca_io_ompio_file_read_all_end (struct ompi_file_t *fh,
                                    void *buf,
                                    ompi_status_public_t *status);
int mca_io_ompio_file_write_all_begin (struct ompi_file_t *fh,
                                       void *buf,
                                       int count,
                                       struct ompi_datatype_t *datatype);
int mca_io_ompio_file_write_all_end (struct ompi_file_t *fh,
                                     void *buf,
                                     ompi_status_public_t *status);
int mca_io_ompio_file_read_ordered_begin (struct ompi_file_t *fh,
                                          void *buf,
                                          int count,
                                          struct ompi_datatype_t *datatype);
int mca_io_ompio_file_read_ordered_end (struct ompi_file_t *fh,
                                        void *buf,
                                        ompi_status_public_t *status);
int mca_io_ompio_file_write_ordered_begin (struct ompi_file_t *fh,
                                           void *buf,
                                           int count,
                                           struct ompi_datatype_t *datatype);
int mca_io_ompio_file_write_ordered_end (struct ompi_file_t *fh,
                                         void *buf,
                                         struct ompi_status_public_t *status);

/* Section 9.5.1 */
int mca_io_ompio_file_get_type_extent (struct ompi_file_t *fh,
                                       struct ompi_datatype_t *datatype,
                                       MPI_Aint *extent);

/* Section 9.6.1 */
int mca_io_ompio_file_set_atomicity (struct ompi_file_t *fh,
                                     int flag);
int mca_io_ompio_file_get_atomicity (struct ompi_file_t *fh,
                                     int *flag);
int mca_io_ompio_file_sync (struct ompi_file_t *fh);
/*
 * ******************************************************************
 * ************ functions implemented in this module end ************
 * ******************************************************************
 */ 


END_C_DECLS

#endif /* MCA_IO_OMPIO_H */