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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; |
| 945 | trimarchi | 54 | SYS_FLAGS f; |
| 55 | f=kern_fsave(); |
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| 56 | |||
| 57 | index=hash_fun(synch_handle); |
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| 221 | giacomo | 58 | |
| 945 | trimarchi | 59 | if (index<0 || index>=MAX_HASH_ENTRY) { |
| 60 | kern_frestore(f); |
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| 61 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 62 | } |
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| 941 | trimarchi | 63 | |
| 64 | if (htable[index].id==1) { |
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| 868 | trimarchi | 65 | oldindex=index; |
| 66 | index = (index + 1) % MAX_HASH_ENTRY; |
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| 67 | // find |
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| 941 | trimarchi | 68 | while (htable[index].id == 1 && index!=oldindex) index=(index+1) % MAX_HASH_ENTRY; |
| 945 | trimarchi | 69 | if (index==oldindex) { |
| 70 | kern_frestore(f); |
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| 71 | return FSF_ERR_TOO_MANY_SYNCH_OBJS; |
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| 72 | } |
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| 868 | trimarchi | 73 | } |
| 74 | //if (!synch_handle) return FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE; |
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| 221 | giacomo | 75 | |
| 868 | trimarchi | 76 | iq_init(&(htable[index].threads), NULL, 0); |
| 77 | htable[index].events = 0; |
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| 936 | trimarchi | 78 | htable[index].id = 1; |
| 945 | trimarchi | 79 | |
| 80 | kern_frestore(f); |
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| 81 | |||
| 936 | trimarchi | 82 | *synch_handle=index; |
| 221 | giacomo | 83 | |
| 84 | return 0; |
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| 85 | |||
| 86 | } |
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| 87 | |||
| 88 | int |
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| 936 | trimarchi | 89 | fsf_signal_synch_obj(fsf_synch_obj_handle_t synch_handle) |
| 221 | giacomo | 90 | { |
| 91 | |||
| 92 | PID p; |
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| 936 | trimarchi | 93 | int index=synch_handle; |
| 934 | trimarchi | 94 | fsf_server_id_t server; |
| 95 | SYS_FLAGS f; |
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| 96 | f=kern_fsave(); |
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| 945 | trimarchi | 97 | |
| 98 | if (synch_handle<0 || synch_handle>=MAX_HASH_ENTRY) { |
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| 99 | kern_frestore(f); |
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| 100 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 101 | } |
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| 102 | |||
| 936 | trimarchi | 103 | if (htable[index].id==-1) { |
| 104 | kern_frestore(f); |
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| 105 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 868 | trimarchi | 106 | } |
| 936 | trimarchi | 107 | |
| 868 | trimarchi | 108 | //if (!synch_handle) return FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE; |
| 221 | giacomo | 109 | |
| 934 | trimarchi | 110 | if ((p = iq_getfirst(&(htable[index].threads))) != NIL) { |
| 111 | fsf_get_server(p, &server); |
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| 112 | fsf_settask_preemptive(&server, p); |
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| 221 | giacomo | 113 | task_activate(p); |
| 934 | trimarchi | 114 | } |
| 221 | giacomo | 115 | else |
| 868 | trimarchi | 116 | htable[index].events++; |
| 221 | giacomo | 117 | |
| 934 | trimarchi | 118 | kern_frestore(f); |
| 221 | giacomo | 119 | return 0; |
| 120 | |||
| 121 | } |
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| 122 | |||
| 123 | int |
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| 936 | trimarchi | 124 | fsf_destroy_synch_obj(fsf_synch_obj_handle_t synch_handle) |
| 221 | giacomo | 125 | { |
| 936 | trimarchi | 126 | int index=synch_handle; |
| 127 | SYS_FLAGS f; |
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| 128 | f=kern_fsave(); |
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| 945 | trimarchi | 129 | |
| 130 | if (synch_handle<0 || synch_handle>=MAX_HASH_ENTRY) { |
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| 131 | kern_frestore(f); |
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| 132 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 133 | } |
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| 134 | |||
| 936 | trimarchi | 135 | if (htable[index].id==-1) { |
| 136 | kern_frestore(f); |
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| 137 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 868 | trimarchi | 138 | } |
| 964 | trimarchi | 139 | htable[index].id=-1; |
| 868 | trimarchi | 140 | //if (!synch_handle) return FSF_ERR_INVALID_SYNCH_OBJECT_HANDLE; |
| 141 | |||
| 142 | while (iq_getfirst(&(htable[index].threads)) != NIL); |
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| 143 | htable[index].events = 0; |
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| 945 | trimarchi | 144 | kern_frestore(f); |
| 868 | trimarchi | 145 | |
| 221 | giacomo | 146 | return 0; |
| 147 | |||
| 148 | } |
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| 149 | |||
| 933 | trimarchi | 150 | int restart_task(PID p) { |
| 151 | fsf_server_id_t server; |
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| 152 | |||
| 153 | fsf_get_server(p, &server); |
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| 154 | fsf_settask_preemptive(&server, p); |
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| 155 | return task_activate(p); |
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| 156 | } |
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| 157 | |||
| 932 | trimarchi | 158 | int fsf_schedule_timed_job |
| 221 | giacomo | 159 | (const struct timespec *at_absolute_time, |
| 160 | struct timespec *next_budget, |
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| 161 | struct timespec *next_period, |
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| 162 | bool *was_deadline_missed, |
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| 163 | bool *was_budget_overran) |
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| 164 | { |
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| 661 | giacomo | 165 | TIME T,Q,D; |
| 221 | giacomo | 166 | int budget, local_scheduler_level, scheduler_id; |
| 933 | trimarchi | 167 | SYS_FLAGS f; |
| 168 | fsf_server_id_t server; |
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| 221 | giacomo | 169 | |
| 940 | trimarchi | 170 | if (at_absolute_time->tv_sec < 0 || at_absolute_time->tv_nsec > 1000000000) |
| 171 | return FSF_ERR_BAD_ARGUMENT; |
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| 172 | |||
| 933 | trimarchi | 173 | f=kern_fsave(); |
| 174 | |||
| 241 | giacomo | 175 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
| 176 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
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| 221 | giacomo | 177 | |
| 226 | giacomo | 178 | if (proc_table[exec_shadow].task_level != local_scheduler_level) return 0; |
| 179 | |||
| 221 | giacomo | 180 | switch (scheduler_id) { |
| 954 | trimarchi | 181 | case FSF_RR: |
| 221 | giacomo | 182 | budget = POSIXSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 183 | break; |
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| 868 | trimarchi | 184 | case FSF_EDF: |
| 221 | giacomo | 185 | budget = EDFSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 186 | break; |
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| 868 | trimarchi | 187 | case FSF_NONE: |
| 858 | trimarchi | 188 | budget = NONESTAR_getbudget(local_scheduler_level, exec_shadow); |
| 189 | break; |
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| 954 | trimarchi | 190 | case FSF_FP: |
| 858 | trimarchi | 191 | budget = RMSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 192 | break; |
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| 193 | |||
| 221 | giacomo | 194 | default: |
| 195 | budget = -1; |
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| 196 | break; |
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| 197 | } |
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| 198 | |||
| 933 | trimarchi | 199 | if (budget == -1) { |
| 200 | kern_frestore(f); |
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| 201 | return FSF_ERR_BAD_ARGUMENT; |
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| 202 | } |
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| 221 | giacomo | 203 | |
| 204 | if (next_budget != NULL && next_period != NULL) { |
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| 205 | |||
| 661 | giacomo | 206 | SERVER_getbudgetinfo(fsf_server_level, &Q, &T, &D, budget); |
| 221 | giacomo | 207 | |
| 208 | #ifdef FSF_DEBUG |
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| 209 | kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
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| 210 | #endif |
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| 211 | |||
| 212 | next_budget->tv_sec = Q / 1000000; |
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| 213 | next_budget->tv_nsec = (Q % 1000000) * 1000; |
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| 214 | next_period->tv_sec = T / 1000000; |
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| 215 | next_period->tv_nsec = (T % 1000000) * 1000; |
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| 216 | |||
| 217 | } |
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| 218 | |||
| 224 | giacomo | 219 | if (was_deadline_missed != NULL) |
| 220 | *was_deadline_missed = false; |
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| 221 | giacomo | 221 | if (was_budget_overran != NULL) |
| 224 | giacomo | 222 | *was_budget_overran = false; |
| 221 | giacomo | 223 | |
| 933 | trimarchi | 224 | if (at_absolute_time != NULL) { |
| 225 | fsf_get_server(exec_shadow, &server); |
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| 226 | fsf_settask_nopreemptive(&server, exec_shadow); |
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| 227 | kern_event_post(at_absolute_time, (void (*)(void *))restart_task, (void *)(exec_shadow)); |
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| 228 | } |
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| 221 | giacomo | 229 | |
| 230 | #ifdef FSF_DEBUG |
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| 231 | if (at_absolute_time != NULL) |
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| 232 | 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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| 233 | else |
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| 234 | kern_printf("(End Cycle %d)",exec_shadow); |
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| 235 | #endif |
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| 236 | |||
| 933 | trimarchi | 237 | kern_frestore(f); |
| 798 | giacomo | 238 | task_endcycle(); |
| 940 | trimarchi | 239 | |
| 221 | giacomo | 240 | |
| 940 | trimarchi | 241 | |
| 221 | giacomo | 242 | return 0; |
| 243 | |||
| 244 | } |
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| 245 | |||
| 932 | trimarchi | 246 | int fsf_schedule_triggered_job |
| 247 | (fsf_synch_obj_handle_t synch_handle, |
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| 248 | struct timespec *next_budget, |
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| 249 | struct timespec *next_period, |
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| 250 | bool *was_deadline_missed, |
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| 251 | bool *was_budget_overran) |
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| 221 | giacomo | 252 | { |
| 253 | |||
| 661 | giacomo | 254 | TIME T,Q,D; |
| 936 | trimarchi | 255 | int index=synch_handle; |
| 221 | giacomo | 256 | int budget, local_scheduler_level, scheduler_id; |
| 934 | trimarchi | 257 | fsf_server_id_t server; |
| 933 | trimarchi | 258 | SYS_FLAGS f; |
| 221 | giacomo | 259 | |
| 933 | trimarchi | 260 | f=kern_fsave(); |
| 261 | |||
| 241 | giacomo | 262 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
| 263 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
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| 226 | giacomo | 264 | |
| 933 | trimarchi | 265 | if (proc_table[exec_shadow].task_level != local_scheduler_level) { |
| 266 | kern_frestore(f); |
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| 936 | trimarchi | 267 | return FSF_ERR_BAD_ARGUMENT; |
| 933 | trimarchi | 268 | } |
| 226 | giacomo | 269 | |
| 221 | giacomo | 270 | switch (scheduler_id) { |
| 954 | trimarchi | 271 | case FSF_RR: |
| 221 | giacomo | 272 | budget = POSIXSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 273 | break; |
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| 868 | trimarchi | 274 | case FSF_EDF: |
| 221 | giacomo | 275 | budget = EDFSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 276 | break; |
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| 954 | trimarchi | 277 | case FSF_FP: |
| 933 | trimarchi | 278 | budget = RMSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 936 | trimarchi | 279 | case FSF_NONE: |
| 280 | budget = NONESTAR_getbudget(local_scheduler_level, exec_shadow); |
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| 281 | break; |
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| 221 | giacomo | 282 | default: |
| 283 | budget = -1; |
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| 284 | break; |
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| 285 | } |
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| 286 | |||
| 933 | trimarchi | 287 | if (budget == -1) { |
| 288 | kern_frestore(f); |
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| 289 | return FSF_ERR_BAD_ARGUMENT; |
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| 221 | giacomo | 290 | |
| 933 | trimarchi | 291 | } |
| 292 | |||
| 221 | giacomo | 293 | if (next_budget != NULL && next_period != NULL) { |
| 294 | |||
| 661 | giacomo | 295 | SERVER_getbudgetinfo(fsf_server_level, &Q, &T, &D, budget); |
| 221 | giacomo | 296 | |
| 297 | #ifdef FSF_DEBUG |
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| 298 | kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
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| 299 | #endif |
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| 300 | |||
| 301 | next_budget->tv_sec = Q / 1000000; |
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| 302 | next_budget->tv_nsec = (Q % 1000000) * 1000; |
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| 303 | next_period->tv_sec = T / 1000000; |
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| 304 | next_period->tv_nsec = (T % 1000000) * 1000; |
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| 305 | |||
| 306 | } |
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| 307 | |||
| 225 | giacomo | 308 | if (was_deadline_missed != NULL) |
| 309 | *was_deadline_missed = false; |
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| 221 | giacomo | 310 | if (was_budget_overran != NULL) |
| 225 | giacomo | 311 | *was_budget_overran = false; |
| 868 | trimarchi | 312 | |
| 936 | trimarchi | 313 | if (htable[index].id==-1) { |
| 314 | kern_frestore(f); |
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| 315 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 316 | } |
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| 868 | trimarchi | 317 | |
| 936 | trimarchi | 318 | if (htable[index].events > 0) { |
| 319 | task_activate(exec_shadow); |
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| 320 | htable[index].events--; |
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| 321 | } else { |
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| 322 | fsf_get_server(exec_shadow, &server); |
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| 323 | fsf_settask_nopreemptive(&server, exec_shadow); |
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| 324 | iq_insertlast(exec_shadow,&(htable[index].threads)); |
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| 868 | trimarchi | 325 | } |
| 221 | giacomo | 326 | |
| 936 | trimarchi | 327 | #ifdef FSF_DEBUG |
| 328 | kern_printf("(Synch_Handle Events %d)",synch_handle->events); |
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| 329 | #endif |
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| 330 | |||
| 331 | kern_frestore(f); |
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| 332 | |||
| 333 | task_endcycle(); |
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| 334 | return 0; |
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| 335 | |||
| 336 | } |
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| 337 | |||
| 338 | int fsf_timed_schedule_triggered_job(fsf_synch_obj_handle_t synch_handle, |
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| 339 | const struct timespec * abs_timeout, |
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| 340 | bool * timed_out, |
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| 341 | struct timespec * next_budget, |
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| 342 | struct timespec * next_period, |
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| 343 | bool * was_deadline_missed, |
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| 344 | bool * was_budget_overran) { |
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| 345 | TIME T,Q,D; |
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| 346 | int index=synch_handle; |
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| 347 | int budget, local_scheduler_level, scheduler_id; |
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| 348 | fsf_server_id_t server; |
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| 940 | trimarchi | 349 | |
| 936 | trimarchi | 350 | SYS_FLAGS f; |
| 351 | |||
| 940 | trimarchi | 352 | if (abs_timeout->tv_sec < 0 || abs_timeout->tv_nsec > 1000000000) |
| 353 | return FSF_ERR_BAD_ARGUMENT; |
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| 354 | |||
| 936 | trimarchi | 355 | f=kern_fsave(); |
| 356 | |||
| 357 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level, exec_shadow); |
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| 358 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, exec_shadow); |
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| 359 | |||
| 360 | if (proc_table[exec_shadow].task_level != local_scheduler_level) { |
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| 361 | kern_frestore(f); |
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| 362 | return 0; |
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| 363 | } |
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| 364 | |||
| 365 | switch (scheduler_id) { |
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| 954 | trimarchi | 366 | case FSF_RR: |
| 936 | trimarchi | 367 | budget = POSIXSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 368 | break; |
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| 369 | case FSF_EDF: |
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| 370 | budget = EDFSTAR_getbudget(local_scheduler_level, exec_shadow); |
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| 371 | break; |
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| 954 | trimarchi | 372 | case FSF_FP: |
| 936 | trimarchi | 373 | budget = RMSTAR_getbudget(local_scheduler_level, exec_shadow); |
| 374 | default: |
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| 375 | budget = -1; |
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| 376 | break; |
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| 377 | } |
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| 378 | |||
| 379 | if (budget == -1) { |
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| 380 | kern_frestore(f); |
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| 381 | return FSF_ERR_BAD_ARGUMENT; |
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| 382 | |||
| 383 | } |
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| 384 | |||
| 385 | if (next_budget != NULL && next_period != NULL) { |
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| 386 | |||
| 387 | SERVER_getbudgetinfo(fsf_server_level, &Q, &T, &D, budget); |
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| 388 | |||
| 389 | #ifdef FSF_DEBUG |
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| 390 | kern_printf("(budget %d Q=%d T=%d)",budget,(int)Q,(int)T); |
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| 391 | #endif |
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| 392 | |||
| 393 | next_budget->tv_sec = Q / 1000000; |
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| 394 | next_budget->tv_nsec = (Q % 1000000) * 1000; |
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| 395 | next_period->tv_sec = T / 1000000; |
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| 396 | next_period->tv_nsec = (T % 1000000) * 1000; |
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| 397 | |||
| 398 | } |
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| 399 | |||
| 400 | if (was_deadline_missed != NULL) |
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| 401 | *was_deadline_missed = false; |
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| 402 | if (was_budget_overran != NULL) |
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| 403 | *was_budget_overran = false; |
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| 404 | |||
| 405 | |||
| 406 | if (htable[index].id==-1) { |
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| 407 | kern_frestore(f); |
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| 408 | return FSF_ERR_INVALID_SYNCH_OBJ_HANDLE; |
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| 409 | } |
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| 410 | |||
| 411 | |||
| 868 | trimarchi | 412 | if (htable[index].events > 0) { |
| 221 | giacomo | 413 | task_activate(exec_shadow); |
| 868 | trimarchi | 414 | htable[index].events--; |
| 934 | trimarchi | 415 | } else { |
| 416 | fsf_get_server(exec_shadow, &server); |
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| 417 | fsf_settask_nopreemptive(&server, exec_shadow); |
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| 868 | trimarchi | 418 | iq_insertlast(exec_shadow,&(htable[index].threads)); |
| 936 | trimarchi | 419 | //kern_event_post(ats_timeout, (void (*)(void *))restart_task, (void *)(exec_shadow)); |
| 934 | trimarchi | 420 | } |
| 221 | giacomo | 421 | |
| 422 | #ifdef FSF_DEBUG |
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| 423 | kern_printf("(Synch_Handle Events %d)",synch_handle->events); |
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| 424 | #endif |
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| 425 | |||
| 933 | trimarchi | 426 | kern_frestore(f); |
| 427 | |||
| 798 | giacomo | 428 | task_endcycle(); |
| 221 | giacomo | 429 | return 0; |
| 430 | |||
| 936 | trimarchi | 431 | }; |