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1063 tullio 1
 
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/*
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
6
 * (at your option) any later version.
7
 *
8
 * This program is distributed in the hope that it will be useful,
9
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
 * GNU General Public License for more details.
12
 *
13
 * You should have received a copy of the GNU General Public License
14
 * along with this program; if not, write to the Free Software
15
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
17
 */
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881 trimarchi 19
//====================================================================================
20
//       FFFFFFIII   RRRRR      SSTTTTTTT
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//      FF         IIR   RR    SS
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//     FF           IR        SS
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//    FFFFFF         RRRR    SSSSST      
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//   FF       FI       RRR  SS
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//  FF         II     RRR  SS
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// FF           IIIIIR    RS 
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//       
28
// Basic FSF(FIRST Scheduling Framework) contract management
29
// S.Ha.R.K. Implementation
30
//=====================================================================
31
 
32
#include <time.h>
33
#include <sys/boolean.h>
34
#include <sys/types.h>
35
 
36
#include "fsf_configuration_parameters.h"
37
#include "fsf_opaque_types.h"
38
 
39
#include "edfstar.h"
40
#include "rmstar.h"
41
#include "posixstar.h"
42
#include "nonestar.h"
43
 
44
#ifndef _FSF_CONTRACT_H_
45
#define _FSF_CONTRACT_H_
46
 
47
 
48
 
49
/* S.Ha.R.K. Init */
50
int FSF_register_module(int server_level, bandwidth_t max_bw);
51
 
52
//////////////////////////////////////////////////////////////////
53
//                     BASIC TYPES AND CONSTANTS
54
//////////////////////////////////////////////////////////////////
55
 
56
typedef enum {FSF_BOUNDED, FSF_INDETERMINATE} fsf_workload_t;
57
 
58
typedef enum {FSF_CONTINUOUS, FSF_DISCRETE} fsf_granularity_t;
59
 
60
typedef struct {
61
  struct timespec    budget;    // Execution time
62
  struct timespec    period;    // Period
63
} fsf_utilization_value_t;
64
 
65
typedef struct {
66
  int                         size; // = 0
67
  fsf_utilization_value_t     unit[FSF_MAX_N_UTILIZATION_VALUES];
68
} fsf_utilization_set_t;
69
 
70
typedef unsigned long         fsf_preemption_level_t; // range 1..2**32-1
71
 
72
typedef struct {
73
  struct timespec          wcet;      // Execution time
74
  fsf_preemption_level_t   plevel;    // Preemption_Level, range 1..2**32-1
75
} fsf_critical_section_data_t;
76
 
77
 
78
// Definition of basic types
79
 
80
typedef unsigned int  fsf_shared_op_id_t;
81
typedef unsigned int  fsf_shared_obj_id_t;
82
 
83
// Operations
84
// The first field contains the id of the related object
85
// the second field contains an identifier of the operation
86
//   this identifier is unique for the object but needs not to be unique
87
//   for the system. In other words, there can be two operations with the 
88
//   same identifier belonging to different shared objects: they are 
89
//   effectively two distinct operations; two different operations on the 
90
//   same object must have different identifiers
91
 
92
typedef struct {
93
  fsf_shared_obj_id_t      obj_id;    // Object identification
94
  fsf_shared_op_id_t       op_id;     // Operation Identification
95
  struct timespec          wcet;      // Execution time
96
} fsf_shared_operation_t;
97
 
98
// Shared object
99
// the first field is the number of distinct operations on the 
100
//    shared object. It is initialized to 0.
101
// the second field is the id of the object, must be unique in the system.
102
// the third field is a list of shared operations.
103
 
104
 
105
 
106
 
107
typedef struct {
108
  int                          size; // = 0
109
  fsf_critical_section_data_t  section[FSF_MAX_N_CRITICAL_SECTIONS];
110
} fsf_critical_sections_t;
111
 
112
typedef struct {
113
  int                      size;      // = 0
114
  fsf_shared_obj_id_t      obj_id;    // object id
115
  fsf_shared_operation_t   shared_op[FSF_MAX_SHARED_OPERATION];
116
} fsf_shared_object_t;
117
 
118
typedef struct {
119
  int size; // =0
120
  fsf_shared_operation_t       operation[FSF_MAX_SHARED_OPERATION];
121
} fsf_shared_operations_t;
122
 
123
typedef int fsf_scheduler_id_t;
124
 
125
#define FSF_SCHEDULER_POSIX             0
126
#define FSF_SCHEDULER_EDF               1
127
#define FSF_SCHEDULER_RM                2
128
#define FSF_SCHEDULER_NONE              3
129
 
130
// Constants for assigning default values
131
#define FSF_DEFAULT_WORKLOAD            FSF_INDETERMINATE
132
#define FSF_DEFAULT_GRANULARITY         FSF_CONTINUOUS
133
#define FSF_DEFAULT_QUALITY             0
134
#define FSF_DEFAULT_IMPORTANCE          1
135
#define FSF_DEFAULT_D_EQUALS_T          TRUE
136
#define FSF_DEFAULT_DEADLINE            {0,0}
137
#define FSF_DEFAULT_SCHEDULER           FSF_SCHEDULER_NONE
138
 
139
// Constants for omitting the assignment of values to specific arguments
140
// in calls to initialization functions
141
#define FSF_NULL_CRITICAL_SECTIONS      (fsf_critical_sections_t *)NULL
142
#define FSF_NULL_UTILIZATION_SET        (fsf_utilization_set_t *)NULL
143
#define FSF_NULL_DEADLINE               (struct timespec *)NULL
144
#define FSF_NULL_SIGNAL                 0
145
 
146
 
147
// Error codes
148
#define FSF_ERR_NOT_INITIALIZED                 2003001
149
#define FSF_ERR_TOO_MANY_TASKS                  2003002
150
#define FSF_ERR_ALREADY_INITIALIZED             2003003
151
#define FSF_ERR_BAD_ARGUMENT                    2003004
152
#define FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE     2003005
153
#define FSF_ERR_NO_RENEGOTIATION_REQUESTED      2003006
154
#define FSF_ERR_CONTRACT_REJECTED               2003007
155
#define FSF_ERR_TOO_MANY_SERVERS                2003008
156
#define FSF_ERR_CREATE_THREAD                   2003009
157
#define FSF_ERR_SERVER_USED                     2003010
158
#define FSF_ERR_INVALID_SERVER                  2003011
159
#define FSF_ERR_CREATE_SERVER                   2003012
160
 
161
//////////////////////////////////////////////////////////////
162
//                       CONTRACT PARAMETERS
163
//////////////////////////////////////////////////////////////
164
 
165
// Contract parameters type; it is an opaque type
166
typedef FSF_CONTRACT_PARAMETERS_T_OPAQUE fsf_contract_parameters_t;
167
 
168
int
169
fsf_initialize_contract(fsf_contract_parameters_t *contract);
170
 
171
//Description: The operation receives a pointer to a contract parameters
172
//object and initializes it, setting it to the default values.
173
//  budget_min                  => {0,0};                              
174
//  period_max                  => {0,0};                              
175
//  budget_max                  => {0,0};                              
176
//  period_min                  => {0,0};                              
177
//  workload                    => DEFAULT_WORKLOAD;                   
178
 
179
//  d_equals_t                  => DEFAULT_D_EQUALS_T; (false or true)
180
//  deadline                    => DEFAULT_DEADLINE;                     
181
//  budget_overrun_sig_notify   => 0;                  (signal number)
182
//  budget_overrun_sig_value    => {0, NULL};
183
//  deadline_miss_sig_notify    => 0;                  (signal number)
184
//  deadline_miss_sig_value     => {0, NULL};
185
//                                                         
186
//  granularity                 => DEFAULT_GRANULARITY;               
187
//  utilization_set;            => size = 0                         
188
//  quality                     => DEFAULT_QUALITY;     (range 0..100)
189
//  importance                  => DEFAULT_IMPORTANCE;    (range 1..5)
190
//                                                         
191
//  preemption_level            => 0;               (range 1..2**32-1)
192
//  critical_sections;          => size = 0                         
193
 
194
 
195
int
196
fsf_set_contract_basic_parameters
197
  (fsf_contract_parameters_t *contract,
198
   const struct timespec  *budget_min,
199
   const struct timespec  *period_max,
200
   const struct timespec  *budget_max,
201
   const struct timespec  *period_min,
202
   fsf_workload_t          workload);
203
 
204
//Description: The operation updates the specified contract parameters
205
//object by setting its budget, period, and workload to the specified
206
//input parameters. (Note: the workload is a basic parameter because
207
//bounded tasks are triggered by the scheduler (see the Timed Schedule
208
//Next Job operation, later), while indeterminate tasks are not;
209
//therefore, their programming model is quite different).
210
 
211
int
212
fsf_get_contract_basic_parameters
213
  (const fsf_contract_parameters_t *contract,
214
   struct timespec  *budget_min,
215
   struct timespec  *period_max,
216
   struct timespec  *budget_max,
217
   struct timespec  *period_min,
218
   fsf_workload_t   *workload);
219
 
220
//Description: This operation obtains from the specified contract parameters
221
//object its budget, period, and workload, and copies them to the places
222
//pointed to by the corresponding input parameters.
223
 
224
int
225
fsf_set_contract_timing_requirements
226
  (fsf_contract_parameters_t *contract,
227
   bool                   d_equals_t,
228
   const struct timespec *deadline,
229
   int                    budget_overrun_sig_notify,
230
   union sigval           budget_overrun_sig_value,
231
   int                    deadline_miss_sig_notify,
232
   union sigval           deadline_miss_sig_value);
233
 
234
//Description: The operation updates the specified contract parameters
235
//object. d_equals_t is used as a boolean, deadline must be
236
//NULL_DEADLINE if d_equals_t is true, budget_overrun_sig_notify or
237
//deadline_miss_sig_notify may be NULL_SIGNAL (no notification) or any
238
//posix signal. budget_overrun_sig_value and deadline_miss_sig_value
239
//are the values to be delivered with the signal.
240
 
241
int
242
fsf_get_contract_timing_requirements
243
  (const fsf_contract_parameters_t *contract,
244
   bool                            *d_equals_t,
245
   struct timespec                 *deadline,
246
   int                             *budget_overrun_sig_notify,
247
   union sigval                    *budget_overrun_sig_value,
248
   int                             *deadline_miss_sig_notify,
249
   union sigval                    *deadline_miss_sig_value);
250
 
251
//Description: The operation obtains the corresponding input
252
//parameters from the specified contract parameters object. If
253
//d_equals_t is true, the deadline will not be updated.
254
 
255
int  
256
fsf_set_contract_reclamation_parameters
257
  (fsf_contract_parameters_t *contract,
258
   fsf_granularity_t            granularity,
259
   const fsf_utilization_set_t *utilization_set,
260
   int                          quality,
261
   int                          importance);
262
 
263
//Description: The operation updates the specified contract parameters
264
//object by setting its granularity, utilization set, quality, and
265
//importance to the specified input parameters.
266
 
267
int  
268
fsf_get_contract_reclamation_parameters
269
  (const fsf_contract_parameters_t *contract,
270
   fsf_granularity_t               *granularity,
271
   fsf_utilization_set_t           *utilization_set,
272
   int                             *quality,
273
   int                             *importance);
274
 
275
//Description: The operation obtains from the specified contract parameters
276
//object its granularity, utilization set, quality, and importance. Then
277
//copies them to the places pointed to by the specified input parameters.
278
//Only the utilization_values of the utilization_set that are in use, are
279
//copied (according to its size field). 
280
 
281
 
282
/* OLD VERSION
283
int
284
fsf_set_contract_synchronization_parameters
285
  (fsf_contract_parameters_t     *contract,
286
   fsf_preemption_level_t         preemption_level,
287
   const fsf_critical_sections_t *critical_sections);
288
 
289
//Description: The operation updates the specified contract parameters
290
//object by setting its preemption level and critical sections to the
291
//specified input parameters.
292
 
293
*/
294
 
295
int
296
fsf_get_contract_synchronization_parameters
297
  (const fsf_contract_parameters_t *contract,
298
   fsf_preemption_level_t          *preemption_level,
299
   fsf_critical_sections_t         *critical_sections);
300
 
301
//Description: The operation obtains from the specified contract
302
//parameters object its preemption level and critical sections, and
303
//copies them to the places pointed to by the specified input
304
//parameters.  Only those critical_section_data records that are in use
305
//in the critical_sections structure are copied (according to its size
306
//field).
307
 
308
int
309
fsf_set_local_scheduler_parameter
310
  (fsf_contract_parameters_t *contract,
311
   fsf_scheduler_id_t local_scheduler_id);
312
 
313
//Description: Set the local scheduler
314
 
315
int
316
fsf_get_local_scheduler_parameter
317
  (const fsf_contract_parameters_t *contract,
318
   fsf_scheduler_id_t *local_scheduler_id);
319
 
320
//Description: Get the local scheduler
321
 
322
//////////////////////////////////////////////////////////////
323
//                 SYNCHRONIZATION OBJECTS
324
//////////////////////////////////////////////////////////////
325
 
326
//An abstract synchronization object is defined by the application.
327
//This object can be used by an application to wait for an event to
328
//arrive by invoking the Event Triggered Schedule Next Job operation.
329
//It can also be used to signal the event either causing a waiting
330
//server to wake up, or the event to be queued if no server is waiting
331
//for it.  It is defined by the following opaque type and has the
332
//following operations:
333
 
334
typedef FSF_SYNCH_OBJECT_HANDLE_T_OPAQUE fsf_synch_object_handle_t;
335
 
336
int
337
fsf_create_synchobject(fsf_synch_object_handle_t *synch_handle);
338
 
339
//Description: This operation creates and initializes a
340
//synchronization object variable managed by the scheduler, and
341
//returns a handle to it in the variable pointed to by synch_handle.
342
 
343
int
344
fsf_signal_synchobject(fsf_synch_object_handle_t *synch_handle);
345
 
346
//Description: If one or more servers are waiting upon the specified
347
//synchronization object one of them is awakened; if not, the event is
348
//queued at the synchronization object.
349
 
350
int
351
fsf_destroy_synchobject(fsf_synch_object_handle_t *synch_handle);
352
 
353
//This operation destroys the synchronization object (created by a
354
//previous call to fsf_create_synchobject) that is referenced by the
355
//synch_handle variable. After calling this operation, the
356
//synch_handle variable can not be used until it is initialized again
357
//by a call to fsf_create_synchobject.
358
 
359
 
360
///////////////////////////////////////////////////////////////
361
//                 CONTRACT NEGOCIATION OPERATIONS
362
///////////////////////////////////////////////////////////////
363
 
364
// Server Id type, that identifies a server created to manage a 
365
// given contract
366
 
367
typedef int      fsf_server_id_t;
368
 
369
 
370
typedef struct {
371
        fsf_server_id_t  server;
372
        TIME             actual_period;
373
        TIME             actual_budget;
374
        int              Qs;    // quality of service
375
        int              Is;    // importance of service
376
        bandwidth_t      U;     // actual bandwidth
377
        bandwidth_t      Umin;  // min bandwidth
378
        bandwidth_t      Umax;  // max bandwidth
379
        TIME             Cmin;  
380
        TIME             Tmin;
381
        TIME             Tmax;
382
        TIME             deadline;
383
        bool             d_equals_t;
384
} server_elem;
385
 
386
int recalculate_contract(bandwidth_t U);
387
 
388
 
389
// The following type references a function that may become 
390
// a thread's code
391
 
392
typedef void * (*fsf_thread_code_t) (void *);
393
 
394
// Negotiate contract functions: The following functions are used to
395
// create servers for a contract parameters specification and also to
396
// assign one or more threads to a server (Note: the current
397
// implementation only supports one thread per server; this limitation
398
// will be removed in the next phase of the project)
399
 
400
// The first time that any of these operations is called, it creates
401
// all the internal management structures that are necessary for the
402
// FIRST Scheduling Framework to operate properly.
403
 
404
int
405
fsf_negotiate_contract
406
  (const fsf_contract_parameters_t *contract,
407
   fsf_server_id_t      *server);
408
 
409
//Description: The operation negotiates a contract for a new
410
//server. If the on-line admission test is enabled it determines
411
//whether the contract can be admitted or not based on the current
412
//contracts established in the system. Then it creates the server and
413
//recalculates all necessary parameters for the contracts already
414
//present in the system. This is a potentially blocking operation; it
415
//returns when the system has either rejected the contract, or
416
//admitted it and made it effective. It returns zero and places the
417
//server identification number in the location pointed to by the
418
//server input parameter if accepted, or an error if rejected.  No
419
//thread is bound to the newly created server, which will be idle
420
//until a thread is bound to it. This operation can only be executed
421
//by threads that are already bound to an active server and therefore
422
//are being scheduled by the fsf scheduler.
423
 
424
int
425
fsf_create_thread
426
  (fsf_server_id_t    server,
427
   pthread_t         *thread,
428
   pthread_attr_t    *attr,
429
   fsf_thread_code_t  thread_code,
430
   void              *arg,
431
   void              *local_scheduler_arg);
432
 
433
//Description: This operation creates a new thread inside a specific
434
//server. The local_scheduler_arg parameter is used to pass specific
435
//parameters to local scheduler. These parameters are application
436
//depented.
437
 
438
int
439
fsf_get_server
440
  (fsf_server_id_t *server,
441
   pthread_t       thread);
442
 
443
//Description: This operation returns the server associated with a
444
//thread. It returns an error if the thread does not exist, it is not 
445
//under the control of the scheduling framework, or is not bound.
446
 
447
int
448
fsf_cancel_contract (fsf_server_id_t *server);
449
 
450
//Description: The operation eliminates the specified server and
451
//recalculates all necessary parameters for the contracts remaining in 
452
//the system. This is a potentially blocking operation; it returns when 
453
//the system has made the changes effective.
454
 
455
int
456
fsf_renegotiate_contract
457
  (const fsf_contract_parameters_t *new_contract,
458
   fsf_server_id_t server);
459
 
460
//Description: The operation renegotiates a contract for an existing
461
//server. If the on-line admission test is enabled it determines
462
//whether the contract can be admitted or not based on the current
463
//contracts established in the system. If it cannot be admitted, the
464
//old contract remains in effect and an error is returned. If it can
465
//be admitted, it recalculates all necessary parameters for the
466
//contracts already present in the system anr returns zero. This is a
467
//potentially blocking operation; it returns when the system has
468
//either rejected the new contract, or admitted it and made it
469
//effective.
470
 
471
int
472
fsf_request_contract_renegotiation
473
  (const fsf_contract_parameters_t *new_contract,
474
   fsf_server_id_t                  server,
475
   int                              sig_notify,
476
   union sigval                     sig_value);
477
 
478
//Description: The operation enqueues a renegotiate operation for an
479
//existing server, and returns immediately. The renegotiate operation
480
//is performed asynchronously, as soon as it is practical; meanwhile
481
//the system operation will continue normally. When the renegotiation
482
//is made, if the on-line admission test is enabled it determines
483
//whether the contract can be admitted or not based on the current
484
//contracts established in the system. If it cannot be admitted, the
485
//old contract remains in effect. If it can be admitted, it
486
//recalculates all necessary parameters for the contracts already
487
//present in the system. When the operation is completed, notification
488
//is made to the caller, if requested, via a signal. The status of the
489
//operation (in progress, admitted, rejected) can be checked with the
490
//get_renegotiation_status operation.  The argument sig_notify can be
491
//NULL_SIGNAL (no notification), or any posix signal; and in this case
492
//sig_value is to be sent with the signal.
493
 
494
typedef enum {FSF_IN_PROGRESS,
495
              FSF_REJECTED,
496
              FSF_ADMITTED} fsf_renegotiation_status_t;
497
 
498
int
499
fsf_get_renegotiation_status
500
  (fsf_server_id_t server,
501
   fsf_renegotiation_status_t *renegotiation_status);
502
 
503
//Description: The operation reports on the status of the last
504
//renegotiation operation enqueued for the specified server. It is 
505
//callable even after notification of the completion of such operation,
506
//if requested.
507
 
508
int
509
fsf_request_change_quality_and_importance
510
  (fsf_server_id_t server,
511
   int new_importance,
512
   int new_quality);
513
 
514
//Description: The operation enqueues a request to change the quality and 
515
//importance parameters of the specified server, and returns immediately.
516
//The change operation is performed as soon as it is practical;
517
//meanwhile the system operation will continue normally.
518
 
519
 
520
////////////////////////////////////////////////////////////
521
//                  SCHEDULING BOUNDED WORKLOADS
522
////////////////////////////////////////////////////////////
523
 
524
int
525
fsf_schedule_next_timed_job
526
  (const struct timespec *at_absolute_time,
527
   struct timespec       *next_budget,
528
   struct timespec       *next_period,
529
   bool                  *was_deadline_missed,
530
   bool                  *was_budget_overran);
531
 
532
//Description: This operation is invoked by threads associated with
533
//bounded workload servers to indicate that a job has been completed
534
//(and that the scheduler may reassign the unused capacity of the
535
//current job to other servers), and also when the first job require
536
//to be scheduled. The system will activate the job at the specified 
537
//absolute time, and will then use the scheduling rules to determine 
538
//when the job can run, at which time the call returns. Upon return, 
539
//the system reports the current period and budget for the current
540
//job, whether the deadline of the previous job was missed or not, 
541
//and whether the budget of the previous job was overrun or not.
542
 
543
 
544
int
545
fsf_schedule_next_event_triggered_job
546
  (fsf_synch_object_handle_t *synch_handle,
547
   struct timespec           *next_budget,
548
   struct timespec           *next_period,
549
   bool                      *was_deadline_missed,
550
   bool                      *was_budget_overran);
551
 
552
//Description: This operation is invoked by threads associated with
553
//bounded workload servers to indicate that a job has been completed
554
//(and that the scheduler may reassign the unused capacity of the
555
//current job to other servers), and also when the first job require
556
//to be scheduled. If the specified synchronization object has events 
557
//queued, one of them is dequeued; otherwise the server will wait upon 
558
//the specified synchronization object until it is signalled. Then, the 
559
//system will use the scheduling rules to determine when the job can run 
560
//and the call will return at that time. Upon return, the system reports
561
//the current period and budget for the current job, whether the deadline
562
//of the previous job was missed or not, and whether the budget of the
563
//previous job was overrun or not.
564
 
565
 
566
//////////////////////////////////////////////////////////////
567
//           OBTAINING INFORMATION FROM THE SCHEDULER
568
//////////////////////////////////////////////////////////////
569
 
570
int
571
fsf_get_available_capacity (fsf_server_id_t server, float *capacity);
572
 
573
//Description: This operation returns the current spare capacity (in 
574
//percentage of processor or network utilization), currently assigned 
575
//to the importance level of the specified server.
576
 
577
int
578
fsf_get_total_quality (fsf_server_id_t server, int *total_quality);
579
 
580
//Description: This operation returns the sum of the quality parameters 
581
//for all servers in the system of importance level equal to that of 
582
//the specified server.
583
 
584
int
585
fsf_is_admission_test_enabled();
586
 
587
//Description: Returns true if the system is configured with the 
588
//on-line admission test enabled, or false otherwise.
589
 
590
 
591
// Mutex function
592
 
593
// Initialization
594
// here we initialize the second and third field of the structure
595
void fsf_init_shared_op(fsf_shared_operation_t     *op,
596
                        fsf_shared_op_id_t  op_id,
597
                        struct timespec     wcet);
598
 
599
// initialization
600
// The shared object id is set equal to the second parameter.
601
int fsf_init_shared_object(fsf_shared_object_t *obj,
602
                            fsf_shared_obj_id_t id);
603
 
604
// Declare an operation
605
// This function is used to declare that a shared object has 
606
//    a synchronized operation on it. 
607
// It checks if another operation with the same id has already been 
608
//    declared; if so, return false (-1).
609
// The obj_id field of the operation is set equal to the shared object id.
610
// the structure op is copied in the first free element in the array 
611
//    shared_op pof the structure obj. If there are no more free element, 
612
//    returns -1.
613
// Returns 0 if the operation has been completed, -1 otherwise.
614
 
615
int fsf_declare_shared_object_operation(fsf_shared_object_t *obj,
616
                                        fsf_shared_operation_t *op);
617
 
618
 
619
int fsf_lock_object(fsf_shared_operation_t *op);
620
 
621
int fsf_unlock_object(fsf_shared_operation_t *op);
622
 
623
// set contract parameters
624
// specify a list of operations for each contract
625
// the list is specified as a pointer to an array.
626
// the size of the array is specified as third parameter
627
// returns 0 if all operations are correctly initialized
628
// returns -1 otherwise.
629
 
630
int fsf_set_contract_synchronization_parameters(
631
    fsf_contract_parameters_t *contract,
632
    const fsf_shared_operation_t *shared_ops,
633
    size_t op_num);
634
 
635
 
636
 
637
#endif // _FSF_CONTRACT_H_