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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 221 | giacomo | 1 | //===================================================================== |
| 2 | // FFFFFFIII RRRRR SSTTTTTTT |
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| 3 | // FF IIR RR SS |
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| 4 | // FF IR SS |
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| 5 | // FFFFFF RRRR SSSSST |
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| 6 | // FF FI RRR SS |
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| 7 | // FF II RRR SS |
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| 8 | // FF IIIIIR RS |
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| 9 | // |
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| 10 | // Basic FSF(FIRST Scheduling Framework) contract management |
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| 11 | // S.Ha.R.K. Implementation |
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| 12 | //===================================================================== |
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| 13 | |||
| 868 | trimarchi | 14 | #include "fsf_configuration_parameters.h" |
| 15 | #include "fsf_core.h" |
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| 241 | giacomo | 16 | #include "fsf_server.h" |
| 221 | giacomo | 17 | |
| 868 | trimarchi | 18 | #include "posixstar.h" |
| 19 | #include "edfstar.h" |
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| 20 | #include "nonestar.h" |
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| 21 | #include "rmstar.h" |
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| 22 | |||
| 241 | giacomo | 23 | extern int fsf_server_level; |
| 221 | giacomo | 24 | |
| 868 | trimarchi | 25 | struct hash_entry { |
| 26 | IQUEUE threads; |
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| 27 | int events; |
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| 28 | FSF_SYNCH_OBJ_HANDLE_T_OPAQUE id; |
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| 29 | }; |
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| 30 | |||
| 31 | #define MAX_HASH_ENTRY FSF_MAX_N_SYNCH_OBJECTS |
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| 32 | struct hash_entry htable[MAX_HASH_ENTRY]; |
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| 33 | |||
| 34 | void FSF_init_synch_obj_layer() { |
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| 35 | int i; |
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| 36 | for (i=0; i<MAX_HASH_ENTRY; i++) |
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| 37 | htable[i].id=-1; |
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| 38 | } |
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| 39 | |||
| 40 | /*----------------------------------------------------------------------*/ |
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| 41 | /* hash_fun() : address hash table */ |
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| 42 | /*----------------------------------------------------------------------*/ |
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| 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 |
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| 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); |
| 941 | trimarchi | 56 | if (index<0) exit(-1); |
| 57 | |||
| 58 | if (htable[index].id==1) { |
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| 868 | trimarchi | 59 | oldindex=index; |
| 60 | index = (index + 1) % MAX_HASH_ENTRY; |
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| 61 | // find |
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| 941 | trimarchi | 62 | while (htable[index].id == 1 && index!=oldindex) index=(index+1) % MAX_HASH_ENTRY; |
| 868 | trimarchi | 63 | if (index==oldindex) return FSF_ERR_TOO_MANY_SYNCH_OBJS; |
| 64 | } |
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| 65 | //if (!synch_handle) return FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE; |
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| 221 | giacomo | 66 | |
| 868 | trimarchi | 67 | iq_init(&(htable[index].threads), NULL, 0); |
| 68 | htable[index].events = 0; |
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| 936 | trimarchi | 69 | htable[index].id = 1; |
| 70 | *synch_handle=index; |
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| 221 | giacomo | 71 | |
| 72 | return 0; |
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| 73 | |||
| 74 | } |
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| 75 | |||
| 76 | int |
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| 936 | trimarchi | 77 | fsf_signal_synch_obj(fsf_synch_obj_handle_t synch_handle) |
| 221 | giacomo | 78 | { |
| 79 | |||
| 80 | PID p; |
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| 936 | trimarchi | 81 | int index=synch_handle; |
| 934 | trimarchi | 82 | fsf_server_id_t server; |
| 83 | SYS_FLAGS f; |
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| 84 | f=kern_fsave(); |
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| 936 | trimarchi | 85 | |
| 86 | if (htable[index].id==-1) { |
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| 87 | kern_frestore(f); |
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| 88 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 868 | trimarchi | 89 | } |
| 936 | trimarchi | 90 | |
| 868 | trimarchi | 91 | //if (!synch_handle) return FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE; |
| 221 | giacomo | 92 | |
| 934 | trimarchi | 93 | if ((p = iq_getfirst(&(htable[index].threads))) != NIL) { |
| 94 | fsf_get_server(p, &server); |
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| 95 | fsf_settask_preemptive(&server, p); |
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| 221 | giacomo | 96 | task_activate(p); |
| 934 | trimarchi | 97 | } |
| 221 | giacomo | 98 | else |
| 868 | trimarchi | 99 | htable[index].events++; |
| 221 | giacomo | 100 | |
| 934 | trimarchi | 101 | kern_frestore(f); |
| 221 | giacomo | 102 | return 0; |
| 103 | |||
| 104 | } |
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| 105 | |||
| 106 | int |
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| 936 | trimarchi | 107 | fsf_destroy_synch_obj(fsf_synch_obj_handle_t synch_handle) |
| 221 | giacomo | 108 | { |
| 936 | trimarchi | 109 | int index=synch_handle; |
| 110 | SYS_FLAGS f; |
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| 111 | f=kern_fsave(); |
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| 112 | if (htable[index].id==-1) { |
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| 113 | kern_frestore(f); |
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| 114 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 868 | trimarchi | 115 | } |
| 221 | giacomo | 116 | |
| 868 | trimarchi | 117 | //if (!synch_handle) return FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE; |
| 118 | |||
| 119 | while (iq_getfirst(&(htable[index].threads)) != NIL); |
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| 120 | htable[index].events = 0; |
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| 121 | |||
| 221 | giacomo | 122 | return 0; |
| 123 | |||
| 124 | } |
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| 125 | |||
| 933 | trimarchi | 126 | int restart_task(PID p) { |
| 127 | fsf_server_id_t server; |
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| 128 | |||
| 129 | fsf_get_server(p, &server); |
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| 130 | fsf_settask_preemptive(&server, p); |
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| 131 | return task_activate(p); |
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| 132 | } |
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| 133 | |||
| 932 | trimarchi | 134 | int fsf_schedule_timed_job |
| 221 | giacomo | 135 | (const struct timespec *at_absolute_time, |
| 136 | struct timespec *next_budget, |
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| 137 | struct timespec *next_period, |
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| 138 | bool *was_deadline_missed, |
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| 139 | bool *was_budget_overran) |
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| 140 | { |
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| 661 | giacomo | 141 | TIME T,Q,D; |
| 221 | giacomo | 142 | int budget, local_scheduler_level, scheduler_id; |
| 933 | trimarchi | 143 | SYS_FLAGS f; |
| 144 | fsf_server_id_t server; |
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| 221 | giacomo | 145 | |
| 940 | trimarchi | 146 | if (next_budget->tv_sec < 0 || next_budget->tv_nsec > 1000000000) |
| 147 | return FSF_ERR_BAD_ARGUMENT; |
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| 148 | |||
| 149 | if (next_period->tv_sec < 0 || next_period->tv_nsec > 1000000000) |
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| 150 | return FSF_ERR_BAD_ARGUMENT; |
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| 151 | |||
| 152 | if (at_absolute_time->tv_sec < 0 || at_absolute_time->tv_nsec > 1000000000) |
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| 153 | return FSF_ERR_BAD_ARGUMENT; |
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| 154 | |||
| 933 | trimarchi | 155 | f=kern_fsave(); |
| 156 | |||
| 241 | giacomo | 157 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
| 158 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
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| 221 | giacomo | 159 | |
| 226 | giacomo | 160 | if (proc_table[exec_shadow].task_level != local_scheduler_level) return 0; |
| 161 | |||
| 221 | giacomo | 162 | switch (scheduler_id) { |
| 868 | trimarchi | 163 | case FSF_POSIX: |
| 221 | giacomo | 164 | budget = POSIXSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 165 | break; |
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| 868 | trimarchi | 166 | case FSF_EDF: |
| 221 | giacomo | 167 | budget = EDFSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 168 | break; |
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| 868 | trimarchi | 169 | case FSF_NONE: |
| 858 | trimarchi | 170 | budget = NONESTAR_getbudget(local_scheduler_level, exec_shadow); |
| 171 | break; |
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| 868 | trimarchi | 172 | case FSF_RM: |
| 858 | trimarchi | 173 | budget = RMSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 174 | break; |
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| 175 | |||
| 221 | giacomo | 176 | default: |
| 177 | budget = -1; |
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| 178 | break; |
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| 179 | } |
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| 180 | |||
| 933 | trimarchi | 181 | if (budget == -1) { |
| 182 | kern_frestore(f); |
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| 183 | return FSF_ERR_BAD_ARGUMENT; |
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| 184 | } |
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| 221 | giacomo | 185 | |
| 186 | if (next_budget != NULL && next_period != NULL) { |
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| 187 | |||
| 661 | giacomo | 188 | SERVER_getbudgetinfo(fsf_server_level, &Q, &T, &D, budget); |
| 221 | giacomo | 189 | |
| 190 | #ifdef FSF_DEBUG |
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| 191 | kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
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| 192 | #endif |
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| 193 | |||
| 194 | next_budget->tv_sec = Q / 1000000; |
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| 195 | next_budget->tv_nsec = (Q % 1000000) * 1000; |
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| 196 | next_period->tv_sec = T / 1000000; |
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| 197 | next_period->tv_nsec = (T % 1000000) * 1000; |
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| 198 | |||
| 199 | } |
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| 200 | |||
| 224 | giacomo | 201 | if (was_deadline_missed != NULL) |
| 202 | *was_deadline_missed = false; |
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| 221 | giacomo | 203 | if (was_budget_overran != NULL) |
| 224 | giacomo | 204 | *was_budget_overran = false; |
| 221 | giacomo | 205 | |
| 933 | trimarchi | 206 | if (at_absolute_time != NULL) { |
| 207 | fsf_get_server(exec_shadow, &server); |
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| 208 | fsf_settask_nopreemptive(&server, exec_shadow); |
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| 209 | kern_event_post(at_absolute_time, (void (*)(void *))restart_task, (void *)(exec_shadow)); |
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| 210 | } |
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| 221 | giacomo | 211 | |
| 212 | #ifdef FSF_DEBUG |
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| 213 | if (at_absolute_time != NULL) |
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| 214 | kern_printf("(Next act s%d:us%d)",(int)at_absolute_time->tv_sec,(int)at_absolute_time->tv_nsec/1000); |
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| 215 | else |
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| 216 | kern_printf("(End Cycle %d)",exec_shadow); |
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| 217 | #endif |
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| 218 | |||
| 933 | trimarchi | 219 | kern_frestore(f); |
| 798 | giacomo | 220 | task_endcycle(); |
| 940 | trimarchi | 221 | |
| 221 | giacomo | 222 | |
| 940 | trimarchi | 223 | |
| 221 | giacomo | 224 | return 0; |
| 225 | |||
| 226 | } |
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| 227 | |||
| 932 | trimarchi | 228 | int fsf_schedule_triggered_job |
| 229 | (fsf_synch_obj_handle_t synch_handle, |
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| 230 | struct timespec *next_budget, |
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| 231 | struct timespec *next_period, |
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| 232 | bool *was_deadline_missed, |
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| 233 | bool *was_budget_overran) |
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| 221 | giacomo | 234 | { |
| 235 | |||
| 661 | giacomo | 236 | TIME T,Q,D; |
| 936 | trimarchi | 237 | int index=synch_handle; |
| 221 | giacomo | 238 | int budget, local_scheduler_level, scheduler_id; |
| 934 | trimarchi | 239 | fsf_server_id_t server; |
| 933 | trimarchi | 240 | SYS_FLAGS f; |
| 221 | giacomo | 241 | |
| 940 | trimarchi | 242 | if (next_budget->tv_sec < 0 || next_budget->tv_nsec > 1000000000) |
| 243 | return FSF_ERR_BAD_ARGUMENT; |
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| 244 | |||
| 245 | if (next_period->tv_sec < 0 || next_period->tv_nsec > 1000000000) |
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| 246 | return FSF_ERR_BAD_ARGUMENT; |
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| 247 | |||
| 933 | trimarchi | 248 | f=kern_fsave(); |
| 249 | |||
| 241 | giacomo | 250 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
| 251 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
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| 226 | giacomo | 252 | |
| 933 | trimarchi | 253 | if (proc_table[exec_shadow].task_level != local_scheduler_level) { |
| 254 | kern_frestore(f); |
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| 936 | trimarchi | 255 | return FSF_ERR_BAD_ARGUMENT; |
| 933 | trimarchi | 256 | } |
| 226 | giacomo | 257 | |
| 221 | giacomo | 258 | switch (scheduler_id) { |
| 868 | trimarchi | 259 | case FSF_POSIX: |
| 221 | giacomo | 260 | budget = POSIXSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 261 | break; |
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| 868 | trimarchi | 262 | case FSF_EDF: |
| 221 | giacomo | 263 | budget = EDFSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 264 | break; |
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| 868 | trimarchi | 265 | case FSF_RM: |
| 933 | trimarchi | 266 | budget = RMSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 936 | trimarchi | 267 | case FSF_NONE: |
| 268 | budget = NONESTAR_getbudget(local_scheduler_level, exec_shadow); |
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| 269 | break; |
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| 221 | giacomo | 270 | default: |
| 271 | budget = -1; |
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| 272 | break; |
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| 273 | } |
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| 274 | |||
| 933 | trimarchi | 275 | if (budget == -1) { |
| 276 | kern_frestore(f); |
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| 277 | return FSF_ERR_BAD_ARGUMENT; |
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| 221 | giacomo | 278 | |
| 933 | trimarchi | 279 | } |
| 280 | |||
| 221 | giacomo | 281 | if (next_budget != NULL && next_period != NULL) { |
| 282 | |||
| 661 | giacomo | 283 | SERVER_getbudgetinfo(fsf_server_level, &Q, &T, &D, budget); |
| 221 | giacomo | 284 | |
| 285 | #ifdef FSF_DEBUG |
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| 286 | kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
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| 287 | #endif |
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| 288 | |||
| 289 | next_budget->tv_sec = Q / 1000000; |
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| 290 | next_budget->tv_nsec = (Q % 1000000) * 1000; |
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| 291 | next_period->tv_sec = T / 1000000; |
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| 292 | next_period->tv_nsec = (T % 1000000) * 1000; |
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| 293 | |||
| 294 | } |
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| 295 | |||
| 225 | giacomo | 296 | if (was_deadline_missed != NULL) |
| 297 | *was_deadline_missed = false; |
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| 221 | giacomo | 298 | if (was_budget_overran != NULL) |
| 225 | giacomo | 299 | *was_budget_overran = false; |
| 868 | trimarchi | 300 | |
| 936 | trimarchi | 301 | if (htable[index].id==-1) { |
| 302 | kern_frestore(f); |
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| 303 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 304 | } |
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| 868 | trimarchi | 305 | |
| 936 | trimarchi | 306 | if (htable[index].events > 0) { |
| 307 | task_activate(exec_shadow); |
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| 308 | htable[index].events--; |
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| 309 | } else { |
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| 310 | fsf_get_server(exec_shadow, &server); |
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| 311 | fsf_settask_nopreemptive(&server, exec_shadow); |
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| 312 | iq_insertlast(exec_shadow,&(htable[index].threads)); |
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| 868 | trimarchi | 313 | } |
| 221 | giacomo | 314 | |
| 936 | trimarchi | 315 | #ifdef FSF_DEBUG |
| 316 | kern_printf("(Synch_Handle Events %d)",synch_handle->events); |
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| 317 | #endif |
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| 318 | |||
| 319 | kern_frestore(f); |
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| 320 | |||
| 321 | task_endcycle(); |
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| 322 | return 0; |
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| 323 | |||
| 324 | } |
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| 325 | |||
| 326 | int fsf_timed_schedule_triggered_job(fsf_synch_obj_handle_t synch_handle, |
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| 327 | const struct timespec * abs_timeout, |
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| 328 | bool * timed_out, |
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| 329 | struct timespec * next_budget, |
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| 330 | struct timespec * next_period, |
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| 331 | bool * was_deadline_missed, |
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| 332 | bool * was_budget_overran) { |
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| 333 | TIME T,Q,D; |
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| 334 | int index=synch_handle; |
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| 335 | int budget, local_scheduler_level, scheduler_id; |
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| 336 | fsf_server_id_t server; |
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| 940 | trimarchi | 337 | |
| 936 | trimarchi | 338 | SYS_FLAGS f; |
| 339 | |||
| 940 | trimarchi | 340 | if (next_budget->tv_sec < 0 || next_budget->tv_nsec > 1000000000) |
| 341 | return FSF_ERR_BAD_ARGUMENT; |
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| 342 | |||
| 343 | if (next_period->tv_sec < 0 || next_period->tv_nsec > 1000000000) |
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| 344 | return FSF_ERR_BAD_ARGUMENT; |
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| 345 | |||
| 346 | if (abs_timeout->tv_sec < 0 || abs_timeout->tv_nsec > 1000000000) |
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| 347 | return FSF_ERR_BAD_ARGUMENT; |
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| 348 | |||
| 936 | trimarchi | 349 | f=kern_fsave(); |
| 350 | |||
| 351 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
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| 352 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
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| 353 | |||
| 354 | if (proc_table[exec_shadow].task_level != local_scheduler_level) { |
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| 355 | kern_frestore(f); |
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| 356 | return 0; |
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| 357 | } |
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| 358 | |||
| 359 | switch (scheduler_id) { |
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| 360 | case FSF_POSIX: |
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| 361 | budget = POSIXSTAR_getbudget(local_scheduler_level, exec_shadow); |
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| 362 | break; |
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| 363 | case FSF_EDF: |
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| 364 | budget = EDFSTAR_getbudget(local_scheduler_level, exec_shadow); |
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| 365 | break; |
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| 366 | case FSF_RM: |
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| 367 | budget = RMSTAR_getbudget(local_scheduler_level, exec_shadow); |
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| 368 | default: |
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| 369 | budget = -1; |
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| 370 | break; |
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| 371 | } |
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| 372 | |||
| 373 | if (budget == -1) { |
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| 374 | kern_frestore(f); |
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| 375 | return FSF_ERR_BAD_ARGUMENT; |
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| 376 | |||
| 377 | } |
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| 378 | |||
| 379 | if (next_budget != NULL && next_period != NULL) { |
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| 380 | |||
| 381 | SERVER_getbudgetinfo(fsf_server_level, &Q, &T, &D, budget); |
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| 382 | |||
| 383 | #ifdef FSF_DEBUG |
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| 384 | kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
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| 385 | #endif |
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| 386 | |||
| 387 | next_budget->tv_sec = Q / 1000000; |
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| 388 | next_budget->tv_nsec = (Q % 1000000) * 1000; |
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| 389 | next_period->tv_sec = T / 1000000; |
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| 390 | next_period->tv_nsec = (T % 1000000) * 1000; |
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| 391 | |||
| 392 | } |
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| 393 | |||
| 394 | if (was_deadline_missed != NULL) |
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| 395 | *was_deadline_missed = false; |
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| 396 | if (was_budget_overran != NULL) |
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| 397 | *was_budget_overran = false; |
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| 398 | |||
| 399 | |||
| 400 | if (htable[index].id==-1) { |
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| 401 | kern_frestore(f); |
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| 402 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 403 | } |
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| 404 | |||
| 405 | |||
| 868 | trimarchi | 406 | if (htable[index].events > 0) { |
| 221 | giacomo | 407 | task_activate(exec_shadow); |
| 868 | trimarchi | 408 | htable[index].events--; |
| 934 | trimarchi | 409 | } else { |
| 410 | fsf_get_server(exec_shadow, &server); |
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| 411 | fsf_settask_nopreemptive(&server, exec_shadow); |
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| 868 | trimarchi | 412 | iq_insertlast(exec_shadow,&(htable[index].threads)); |
| 936 | trimarchi | 413 | //kern_event_post(ats_timeout, (void (*)(void *))restart_task, (void *)(exec_shadow)); |
| 934 | trimarchi | 414 | } |
| 221 | giacomo | 415 | |
| 416 | #ifdef FSF_DEBUG |
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| 417 | kern_printf("(Synch_Handle Events %d)",synch_handle->events); |
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| 418 | #endif |
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| 419 | |||
| 933 | trimarchi | 420 | kern_frestore(f); |
| 421 | |||
| 798 | giacomo | 422 | task_endcycle(); |
| 221 | giacomo | 423 | return 0; |
| 424 | |||
| 936 | trimarchi | 425 | }; |