Rev 936 | Rev 941 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 221 | giacomo | 1 | //===================================================================== |
| 2 | // FFFFFFIII RRRRR SSTTTTTTT |
||
| 3 | // FF IIR RR SS |
||
| 4 | // FF IR SS |
||
| 5 | // FFFFFF RRRR SSSSST |
||
| 6 | // FF FI RRR SS |
||
| 7 | // FF II RRR SS |
||
| 8 | // FF IIIIIR RS |
||
| 9 | // |
||
| 10 | // Basic FSF(FIRST Scheduling Framework) contract management |
||
| 11 | // S.Ha.R.K. Implementation |
||
| 12 | //===================================================================== |
||
| 13 | |||
| 868 | trimarchi | 14 | #include "fsf_configuration_parameters.h" |
| 15 | #include "fsf_core.h" |
||
| 241 | giacomo | 16 | #include "fsf_server.h" |
| 221 | giacomo | 17 | |
| 868 | trimarchi | 18 | #include "posixstar.h" |
| 19 | #include "edfstar.h" |
||
| 20 | #include "nonestar.h" |
||
| 21 | #include "rmstar.h" |
||
| 22 | |||
| 241 | giacomo | 23 | extern int fsf_server_level; |
| 221 | giacomo | 24 | |
| 868 | trimarchi | 25 | struct hash_entry { |
| 26 | IQUEUE threads; |
||
| 27 | int events; |
||
| 28 | FSF_SYNCH_OBJ_HANDLE_T_OPAQUE id; |
||
| 29 | }; |
||
| 30 | |||
| 31 | #define MAX_HASH_ENTRY FSF_MAX_N_SYNCH_OBJECTS |
||
| 32 | struct hash_entry htable[MAX_HASH_ENTRY]; |
||
| 33 | |||
| 34 | void FSF_init_synch_obj_layer() { |
||
| 35 | int i; |
||
| 36 | for (i=0; i<MAX_HASH_ENTRY; i++) |
||
| 37 | htable[i].id=-1; |
||
| 38 | } |
||
| 39 | |||
| 40 | /*----------------------------------------------------------------------*/ |
||
| 41 | /* hash_fun() : address hash table */ |
||
| 42 | /*----------------------------------------------------------------------*/ |
||
| 936 | trimarchi | 43 | static int hash_fun(FSF_SYNCH_OBJ_HANDLE_T_OPAQUE *id) |
| 868 | trimarchi | 44 | { |
| 936 | trimarchi | 45 | return ((int)id % MAX_HASH_ENTRY); |
| 868 | trimarchi | 46 | } |
| 47 | |||
| 221 | giacomo | 48 | //#define FSF_DEBUG |
| 49 | |||
| 50 | int |
||
| 936 | trimarchi | 51 | fsf_create_synch_obj(fsf_synch_obj_handle_t *synch_handle) |
| 221 | giacomo | 52 | { |
| 868 | trimarchi | 53 | int index,oldindex; |
| 221 | giacomo | 54 | |
| 936 | trimarchi | 55 | index=hash_fun(synch_handle); |
| 868 | trimarchi | 56 | |
| 936 | trimarchi | 57 | if (htable[index].id!=1) { |
| 868 | trimarchi | 58 | oldindex=index; |
| 59 | index = (index + 1) % MAX_HASH_ENTRY; |
||
| 60 | // find |
||
| 936 | trimarchi | 61 | while (htable[index].id != 1 && index!=oldindex) index=(index+1) % MAX_HASH_ENTRY; |
| 868 | trimarchi | 62 | if (index==oldindex) return FSF_ERR_TOO_MANY_SYNCH_OBJS; |
| 63 | } |
||
| 64 | //if (!synch_handle) return FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE; |
||
| 221 | giacomo | 65 | |
| 868 | trimarchi | 66 | iq_init(&(htable[index].threads), NULL, 0); |
| 67 | htable[index].events = 0; |
||
| 936 | trimarchi | 68 | htable[index].id = 1; |
| 69 | *synch_handle=index; |
||
| 221 | giacomo | 70 | |
| 71 | return 0; |
||
| 72 | |||
| 73 | } |
||
| 74 | |||
| 75 | int |
||
| 936 | trimarchi | 76 | fsf_signal_synch_obj(fsf_synch_obj_handle_t synch_handle) |
| 221 | giacomo | 77 | { |
| 78 | |||
| 79 | PID p; |
||
| 936 | trimarchi | 80 | int index=synch_handle; |
| 934 | trimarchi | 81 | fsf_server_id_t server; |
| 82 | SYS_FLAGS f; |
||
| 83 | f=kern_fsave(); |
||
| 936 | trimarchi | 84 | |
| 85 | if (htable[index].id==-1) { |
||
| 86 | kern_frestore(f); |
||
| 87 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
||
| 868 | trimarchi | 88 | } |
| 936 | trimarchi | 89 | |
| 868 | trimarchi | 90 | //if (!synch_handle) return FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE; |
| 221 | giacomo | 91 | |
| 934 | trimarchi | 92 | if ((p = iq_getfirst(&(htable[index].threads))) != NIL) { |
| 93 | fsf_get_server(p, &server); |
||
| 94 | fsf_settask_preemptive(&server, p); |
||
| 221 | giacomo | 95 | task_activate(p); |
| 934 | trimarchi | 96 | } |
| 221 | giacomo | 97 | else |
| 868 | trimarchi | 98 | htable[index].events++; |
| 221 | giacomo | 99 | |
| 934 | trimarchi | 100 | kern_frestore(f); |
| 221 | giacomo | 101 | return 0; |
| 102 | |||
| 103 | } |
||
| 104 | |||
| 105 | int |
||
| 936 | trimarchi | 106 | fsf_destroy_synch_obj(fsf_synch_obj_handle_t synch_handle) |
| 221 | giacomo | 107 | { |
| 936 | trimarchi | 108 | int index=synch_handle; |
| 109 | SYS_FLAGS f; |
||
| 110 | f=kern_fsave(); |
||
| 111 | if (htable[index].id==-1) { |
||
| 112 | kern_frestore(f); |
||
| 113 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
||
| 868 | trimarchi | 114 | } |
| 221 | giacomo | 115 | |
| 868 | trimarchi | 116 | //if (!synch_handle) return FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE; |
| 117 | |||
| 118 | while (iq_getfirst(&(htable[index].threads)) != NIL); |
||
| 119 | htable[index].events = 0; |
||
| 120 | |||
| 221 | giacomo | 121 | return 0; |
| 122 | |||
| 123 | } |
||
| 124 | |||
| 933 | trimarchi | 125 | int restart_task(PID p) { |
| 126 | fsf_server_id_t server; |
||
| 127 | |||
| 128 | fsf_get_server(p, &server); |
||
| 129 | fsf_settask_preemptive(&server, p); |
||
| 130 | return task_activate(p); |
||
| 131 | } |
||
| 132 | |||
| 932 | trimarchi | 133 | int fsf_schedule_timed_job |
| 221 | giacomo | 134 | (const struct timespec *at_absolute_time, |
| 135 | struct timespec *next_budget, |
||
| 136 | struct timespec *next_period, |
||
| 137 | bool *was_deadline_missed, |
||
| 138 | bool *was_budget_overran) |
||
| 139 | { |
||
| 661 | giacomo | 140 | TIME T,Q,D; |
| 221 | giacomo | 141 | int budget, local_scheduler_level, scheduler_id; |
| 933 | trimarchi | 142 | SYS_FLAGS f; |
| 143 | fsf_server_id_t server; |
||
| 221 | giacomo | 144 | |
| 940 | trimarchi | 145 | if (next_budget->tv_sec < 0 || next_budget->tv_nsec > 1000000000) |
| 146 | return FSF_ERR_BAD_ARGUMENT; |
||
| 147 | |||
| 148 | if (next_period->tv_sec < 0 || next_period->tv_nsec > 1000000000) |
||
| 149 | return FSF_ERR_BAD_ARGUMENT; |
||
| 150 | |||
| 151 | if (at_absolute_time->tv_sec < 0 || at_absolute_time->tv_nsec > 1000000000) |
||
| 152 | return FSF_ERR_BAD_ARGUMENT; |
||
| 153 | |||
| 933 | trimarchi | 154 | f=kern_fsave(); |
| 155 | |||
| 241 | giacomo | 156 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
| 157 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
||
| 221 | giacomo | 158 | |
| 226 | giacomo | 159 | if (proc_table[exec_shadow].task_level != local_scheduler_level) return 0; |
| 160 | |||
| 221 | giacomo | 161 | switch (scheduler_id) { |
| 868 | trimarchi | 162 | case FSF_POSIX: |
| 221 | giacomo | 163 | budget = POSIXSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 164 | break; |
||
| 868 | trimarchi | 165 | case FSF_EDF: |
| 221 | giacomo | 166 | budget = EDFSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 167 | break; |
||
| 868 | trimarchi | 168 | case FSF_NONE: |
| 858 | trimarchi | 169 | budget = NONESTAR_getbudget(local_scheduler_level, exec_shadow); |
| 170 | break; |
||
| 868 | trimarchi | 171 | case FSF_RM: |
| 858 | trimarchi | 172 | budget = RMSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 173 | break; |
||
| 174 | |||
| 221 | giacomo | 175 | default: |
| 176 | budget = -1; |
||
| 177 | break; |
||
| 178 | } |
||
| 179 | |||
| 933 | trimarchi | 180 | if (budget == -1) { |
| 181 | kern_frestore(f); |
||
| 182 | return FSF_ERR_BAD_ARGUMENT; |
||
| 183 | } |
||
| 221 | giacomo | 184 | |
| 185 | if (next_budget != NULL && next_period != NULL) { |
||
| 186 | |||
| 661 | giacomo | 187 | SERVER_getbudgetinfo(fsf_server_level, &Q, &T, &D, budget); |
| 221 | giacomo | 188 | |
| 189 | #ifdef FSF_DEBUG |
||
| 190 | kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
||
| 191 | #endif |
||
| 192 | |||
| 193 | next_budget->tv_sec = Q / 1000000; |
||
| 194 | next_budget->tv_nsec = (Q % 1000000) * 1000; |
||
| 195 | next_period->tv_sec = T / 1000000; |
||
| 196 | next_period->tv_nsec = (T % 1000000) * 1000; |
||
| 197 | |||
| 198 | } |
||
| 199 | |||
| 224 | giacomo | 200 | if (was_deadline_missed != NULL) |
| 201 | *was_deadline_missed = false; |
||
| 221 | giacomo | 202 | if (was_budget_overran != NULL) |
| 224 | giacomo | 203 | *was_budget_overran = false; |
| 221 | giacomo | 204 | |
| 933 | trimarchi | 205 | if (at_absolute_time != NULL) { |
| 206 | fsf_get_server(exec_shadow, &server); |
||
| 207 | fsf_settask_nopreemptive(&server, exec_shadow); |
||
| 208 | kern_event_post(at_absolute_time, (void (*)(void *))restart_task, (void *)(exec_shadow)); |
||
| 209 | } |
||
| 221 | giacomo | 210 | |
| 211 | #ifdef FSF_DEBUG |
||
| 212 | if (at_absolute_time != NULL) |
||
| 213 | kern_printf("(Next act s%d:us%d)",(int)at_absolute_time->tv_sec,(int)at_absolute_time->tv_nsec/1000); |
||
| 214 | else |
||
| 215 | kern_printf("(End Cycle %d)",exec_shadow); |
||
| 216 | #endif |
||
| 217 | |||
| 933 | trimarchi | 218 | kern_frestore(f); |
| 798 | giacomo | 219 | task_endcycle(); |
| 940 | trimarchi | 220 | |
| 221 | giacomo | 221 | |
| 940 | trimarchi | 222 | |
| 221 | giacomo | 223 | return 0; |
| 224 | |||
| 225 | } |
||
| 226 | |||
| 932 | trimarchi | 227 | int fsf_schedule_triggered_job |
| 228 | (fsf_synch_obj_handle_t synch_handle, |
||
| 229 | struct timespec *next_budget, |
||
| 230 | struct timespec *next_period, |
||
| 231 | bool *was_deadline_missed, |
||
| 232 | bool *was_budget_overran) |
||
| 221 | giacomo | 233 | { |
| 234 | |||
| 661 | giacomo | 235 | TIME T,Q,D; |
| 936 | trimarchi | 236 | int index=synch_handle; |
| 221 | giacomo | 237 | int budget, local_scheduler_level, scheduler_id; |
| 934 | trimarchi | 238 | fsf_server_id_t server; |
| 933 | trimarchi | 239 | SYS_FLAGS f; |
| 221 | giacomo | 240 | |
| 940 | trimarchi | 241 | if (next_budget->tv_sec < 0 || next_budget->tv_nsec > 1000000000) |
| 242 | return FSF_ERR_BAD_ARGUMENT; |
||
| 243 | |||
| 244 | if (next_period->tv_sec < 0 || next_period->tv_nsec > 1000000000) |
||
| 245 | return FSF_ERR_BAD_ARGUMENT; |
||
| 246 | |||
| 933 | trimarchi | 247 | f=kern_fsave(); |
| 248 | |||
| 241 | giacomo | 249 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
| 250 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
||
| 226 | giacomo | 251 | |
| 933 | trimarchi | 252 | if (proc_table[exec_shadow].task_level != local_scheduler_level) { |
| 253 | kern_frestore(f); |
||
| 936 | trimarchi | 254 | return FSF_ERR_BAD_ARGUMENT; |
| 933 | trimarchi | 255 | } |
| 226 | giacomo | 256 | |
| 221 | giacomo | 257 | switch (scheduler_id) { |
| 868 | trimarchi | 258 | case FSF_POSIX: |
| 221 | giacomo | 259 | budget = POSIXSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 260 | break; |
||
| 868 | trimarchi | 261 | case FSF_EDF: |
| 221 | giacomo | 262 | budget = EDFSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 263 | break; |
||
| 868 | trimarchi | 264 | case FSF_RM: |
| 933 | trimarchi | 265 | budget = RMSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 936 | trimarchi | 266 | case FSF_NONE: |
| 267 | budget = NONESTAR_getbudget(local_scheduler_level, exec_shadow); |
||
| 268 | break; |
||
| 221 | giacomo | 269 | default: |
| 270 | budget = -1; |
||
| 271 | break; |
||
| 272 | } |
||
| 273 | |||
| 933 | trimarchi | 274 | if (budget == -1) { |
| 275 | kern_frestore(f); |
||
| 276 | return FSF_ERR_BAD_ARGUMENT; |
||
| 221 | giacomo | 277 | |
| 933 | trimarchi | 278 | } |
| 279 | |||
| 221 | giacomo | 280 | if (next_budget != NULL && next_period != NULL) { |
| 281 | |||
| 661 | giacomo | 282 | SERVER_getbudgetinfo(fsf_server_level, &Q, &T, &D, budget); |
| 221 | giacomo | 283 | |
| 284 | #ifdef FSF_DEBUG |
||
| 285 | kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
||
| 286 | #endif |
||
| 287 | |||
| 288 | next_budget->tv_sec = Q / 1000000; |
||
| 289 | next_budget->tv_nsec = (Q % 1000000) * 1000; |
||
| 290 | next_period->tv_sec = T / 1000000; |
||
| 291 | next_period->tv_nsec = (T % 1000000) * 1000; |
||
| 292 | |||
| 293 | } |
||
| 294 | |||
| 225 | giacomo | 295 | if (was_deadline_missed != NULL) |
| 296 | *was_deadline_missed = false; |
||
| 221 | giacomo | 297 | if (was_budget_overran != NULL) |
| 225 | giacomo | 298 | *was_budget_overran = false; |
| 868 | trimarchi | 299 | |
| 936 | trimarchi | 300 | if (htable[index].id==-1) { |
| 301 | kern_frestore(f); |
||
| 302 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
||
| 303 | } |
||
| 868 | trimarchi | 304 | |
| 936 | trimarchi | 305 | if (htable[index].events > 0) { |
| 306 | task_activate(exec_shadow); |
||
| 307 | htable[index].events--; |
||
| 308 | } else { |
||
| 309 | fsf_get_server(exec_shadow, &server); |
||
| 310 | fsf_settask_nopreemptive(&server, exec_shadow); |
||
| 311 | iq_insertlast(exec_shadow,&(htable[index].threads)); |
||
| 868 | trimarchi | 312 | } |
| 221 | giacomo | 313 | |
| 936 | trimarchi | 314 | #ifdef FSF_DEBUG |
| 315 | kern_printf("(Synch_Handle Events %d)",synch_handle->events); |
||
| 316 | #endif |
||
| 317 | |||
| 318 | kern_frestore(f); |
||
| 319 | |||
| 320 | task_endcycle(); |
||
| 321 | return 0; |
||
| 322 | |||
| 323 | } |
||
| 324 | |||
| 325 | int fsf_timed_schedule_triggered_job(fsf_synch_obj_handle_t synch_handle, |
||
| 326 | const struct timespec * abs_timeout, |
||
| 327 | bool * timed_out, |
||
| 328 | struct timespec * next_budget, |
||
| 329 | struct timespec * next_period, |
||
| 330 | bool * was_deadline_missed, |
||
| 331 | bool * was_budget_overran) { |
||
| 332 | TIME T,Q,D; |
||
| 333 | int index=synch_handle; |
||
| 334 | int budget, local_scheduler_level, scheduler_id; |
||
| 335 | fsf_server_id_t server; |
||
| 940 | trimarchi | 336 | |
| 936 | trimarchi | 337 | SYS_FLAGS f; |
| 338 | |||
| 940 | trimarchi | 339 | if (next_budget->tv_sec < 0 || next_budget->tv_nsec > 1000000000) |
| 340 | return FSF_ERR_BAD_ARGUMENT; |
||
| 341 | |||
| 342 | if (next_period->tv_sec < 0 || next_period->tv_nsec > 1000000000) |
||
| 343 | return FSF_ERR_BAD_ARGUMENT; |
||
| 344 | |||
| 345 | if (abs_timeout->tv_sec < 0 || abs_timeout->tv_nsec > 1000000000) |
||
| 346 | return FSF_ERR_BAD_ARGUMENT; |
||
| 347 | |||
| 936 | trimarchi | 348 | f=kern_fsave(); |
| 349 | |||
| 350 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
||
| 351 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
||
| 352 | |||
| 353 | if (proc_table[exec_shadow].task_level != local_scheduler_level) { |
||
| 354 | kern_frestore(f); |
||
| 355 | return 0; |
||
| 356 | } |
||
| 357 | |||
| 358 | switch (scheduler_id) { |
||
| 359 | case FSF_POSIX: |
||
| 360 | budget = POSIXSTAR_getbudget(local_scheduler_level, exec_shadow); |
||
| 361 | break; |
||
| 362 | case FSF_EDF: |
||
| 363 | budget = EDFSTAR_getbudget(local_scheduler_level, exec_shadow); |
||
| 364 | break; |
||
| 365 | case FSF_RM: |
||
| 366 | budget = RMSTAR_getbudget(local_scheduler_level, exec_shadow); |
||
| 367 | default: |
||
| 368 | budget = -1; |
||
| 369 | break; |
||
| 370 | } |
||
| 371 | |||
| 372 | if (budget == -1) { |
||
| 373 | kern_frestore(f); |
||
| 374 | return FSF_ERR_BAD_ARGUMENT; |
||
| 375 | |||
| 376 | } |
||
| 377 | |||
| 378 | if (next_budget != NULL && next_period != NULL) { |
||
| 379 | |||
| 380 | SERVER_getbudgetinfo(fsf_server_level, &Q, &T, &D, budget); |
||
| 381 | |||
| 382 | #ifdef FSF_DEBUG |
||
| 383 | kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
||
| 384 | #endif |
||
| 385 | |||
| 386 | next_budget->tv_sec = Q / 1000000; |
||
| 387 | next_budget->tv_nsec = (Q % 1000000) * 1000; |
||
| 388 | next_period->tv_sec = T / 1000000; |
||
| 389 | next_period->tv_nsec = (T % 1000000) * 1000; |
||
| 390 | |||
| 391 | } |
||
| 392 | |||
| 393 | if (was_deadline_missed != NULL) |
||
| 394 | *was_deadline_missed = false; |
||
| 395 | if (was_budget_overran != NULL) |
||
| 396 | *was_budget_overran = false; |
||
| 397 | |||
| 398 | |||
| 399 | if (htable[index].id==-1) { |
||
| 400 | kern_frestore(f); |
||
| 401 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
||
| 402 | } |
||
| 403 | |||
| 404 | |||
| 868 | trimarchi | 405 | if (htable[index].events > 0) { |
| 221 | giacomo | 406 | task_activate(exec_shadow); |
| 868 | trimarchi | 407 | htable[index].events--; |
| 934 | trimarchi | 408 | } else { |
| 409 | fsf_get_server(exec_shadow, &server); |
||
| 410 | fsf_settask_nopreemptive(&server, exec_shadow); |
||
| 868 | trimarchi | 411 | iq_insertlast(exec_shadow,&(htable[index].threads)); |
| 936 | trimarchi | 412 | //kern_event_post(ats_timeout, (void (*)(void *))restart_task, (void *)(exec_shadow)); |
| 934 | trimarchi | 413 | } |
| 221 | giacomo | 414 | |
| 415 | #ifdef FSF_DEBUG |
||
| 416 | kern_printf("(Synch_Handle Events %d)",synch_handle->events); |
||
| 417 | #endif |
||
| 418 | |||
| 933 | trimarchi | 419 | kern_frestore(f); |
| 420 | |||
| 798 | giacomo | 421 | task_endcycle(); |
| 221 | giacomo | 422 | return 0; |
| 423 | |||
| 936 | trimarchi | 424 | }; |