Rev 250 | Rev 273 | 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 | |||
14 | #include "fsf_contract.h" |
||
241 | giacomo | 15 | #include "fsf_server.h" |
221 | giacomo | 16 | |
17 | #include <pthread.h> |
||
18 | #include <stdlib.h> |
||
19 | |||
224 | giacomo | 20 | //#define FSF_DEBUG |
221 | giacomo | 21 | |
241 | giacomo | 22 | int fsf_server_level; |
221 | giacomo | 23 | |
241 | giacomo | 24 | int FSF_register_module(int server_level) |
224 | giacomo | 25 | { |
26 | |||
27 | printk("FSF Module\n"); |
||
28 | |||
241 | giacomo | 29 | fsf_server_level = server_level; |
224 | giacomo | 30 | |
31 | return 0; |
||
32 | |||
33 | } |
||
34 | |||
221 | giacomo | 35 | /* Convert the contract specification to |
36 | * budget parameters |
||
37 | */ |
||
241 | giacomo | 38 | int set_SERVER_budget_from_contract |
221 | giacomo | 39 | (const fsf_contract_parameters_t *contract, |
40 | int *budget) |
||
41 | { |
||
42 | |||
43 | int local_scheduler_level = 0; |
||
44 | |||
45 | switch (contract->local_scheduler_id) { |
||
46 | case FSF_SCHEDULER_POSIX: |
||
241 | giacomo | 47 | local_scheduler_level = POSIXSTAR_register_level(fsf_server_level,5000,32); |
221 | giacomo | 48 | break; |
49 | case FSF_SCHEDULER_EDF: |
||
241 | giacomo | 50 | local_scheduler_level = EDFSTAR_register_level(fsf_server_level); |
221 | giacomo | 51 | break; |
52 | case FSF_SCHEDULER_RM: |
||
241 | giacomo | 53 | local_scheduler_level = RMSTAR_register_level(fsf_server_level); |
221 | giacomo | 54 | break; |
55 | } |
||
56 | |||
241 | giacomo | 57 | *budget = SERVER_setbudget(fsf_server_level, |
221 | giacomo | 58 | TIMESPEC2USEC(&(contract->budget_min)), |
59 | TIMESPEC2USEC(&(contract->period_max)), |
||
60 | local_scheduler_level,contract->local_scheduler_id); |
||
61 | |||
62 | return 0; |
||
63 | |||
64 | } |
||
65 | |||
241 | giacomo | 66 | int adjust_SERVER_budget_from_contract |
221 | giacomo | 67 | (const fsf_contract_parameters_t *contract, |
68 | int budget) |
||
69 | { |
||
70 | |||
241 | giacomo | 71 | SERVER_adjust_budget(fsf_server_level, |
72 | TIMESPEC2USEC(&(contract->budget_min)), |
||
73 | TIMESPEC2USEC(&(contract->period_max)), |
||
74 | budget); |
||
221 | giacomo | 75 | |
76 | return 0; |
||
77 | |||
78 | } |
||
79 | |||
80 | /* Admission Test function */ |
||
81 | int add_contract(const fsf_contract_parameters_t *contract) |
||
82 | { |
||
83 | |||
84 | return 0; |
||
85 | |||
86 | } |
||
87 | |||
88 | int link_contract_to_server(const fsf_contract_parameters_t *contract, |
||
89 | fsf_server_id_t server) |
||
90 | { |
||
91 | |||
92 | return 0; |
||
93 | |||
94 | } |
||
95 | |||
96 | int remove_contract(fsf_server_id_t server) |
||
97 | { |
||
98 | |||
99 | return 0; |
||
100 | |||
101 | } |
||
102 | |||
103 | |||
104 | int fsf_negotiate_contract |
||
105 | (const fsf_contract_parameters_t *contract, |
||
106 | fsf_server_id_t *server) |
||
107 | { |
||
108 | |||
109 | /* Check if contract is initialized */ |
||
110 | if (!contract) return FSF_ERR_NOT_INITIALIZED; |
||
111 | |||
112 | /* Admission Test */ |
||
113 | if (FSF_ADMISSION_TEST_IS_ENABLED) |
||
114 | if (add_contract(contract)) |
||
115 | return FSF_ERR_CONTRACT_REJECTED; |
||
116 | |||
241 | giacomo | 117 | /* SERVER => BUDGET */ |
118 | set_SERVER_budget_from_contract(contract,server); |
||
221 | giacomo | 119 | |
120 | #ifdef FSF_DEBUG |
||
121 | kern_printf("(New Server %d)",*server); |
||
122 | #endif |
||
123 | |||
124 | if (*server >= 0) |
||
125 | link_contract_to_server(contract,*server); |
||
126 | else |
||
127 | return FSF_ERR_CREATE_SERVER; |
||
128 | |||
129 | return 0; |
||
130 | |||
131 | } |
||
132 | |||
241 | giacomo | 133 | int fsf_create_thread |
134 | (fsf_server_id_t server, |
||
135 | pthread_t *thread, |
||
136 | pthread_attr_t *attr, |
||
137 | fsf_thread_code_t thread_code, |
||
138 | void *arg, |
||
139 | void *local_scheduler_arg) |
||
221 | giacomo | 140 | { |
141 | |||
241 | giacomo | 142 | NRT_TASK_MODEL nrt; |
221 | giacomo | 143 | int local_scheduler_level,scheduler_id; |
144 | |||
145 | #ifdef FSF_DEBUG |
||
267 | giacomo | 146 | kern_printf("(FSF:Insert thread = %d to Server = %d)",*thread,server); |
221 | giacomo | 147 | #endif |
148 | |||
149 | /* Check if server and thread exsist */ |
||
241 | giacomo | 150 | if (server == NIL) |
151 | return FSF_ERR_INVALID_SERVER; |
||
221 | giacomo | 152 | |
241 | giacomo | 153 | local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,server); |
154 | scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,server); |
||
221 | giacomo | 155 | |
156 | /* Check if thread is already bind */ |
||
157 | switch (scheduler_id) { |
||
158 | case FSF_SCHEDULER_POSIX: |
||
159 | |||
250 | giacomo | 160 | if (local_scheduler_arg == NULL) { |
161 | nrt_task_default_model(nrt); |
||
162 | nrt_task_def_save_arrivals(nrt); |
||
163 | nrt_task_def_arg(nrt,arg); |
||
164 | nrt_task_def_ctrl_jet(nrt); |
||
165 | nrt_task_def_level(nrt,local_scheduler_level); |
||
221 | giacomo | 166 | |
250 | giacomo | 167 | *thread = task_create("POSIXSTAR", thread_code, &nrt, NULL); |
168 | } |
||
267 | giacomo | 169 | if (*thread == NIL) { |
170 | #ifdef FSF_DEBUG |
||
171 | kern_printf("(FSF:Error creating thread)"); |
||
172 | #endif |
||
241 | giacomo | 173 | return FSF_ERR_CREATE_THREAD; |
267 | giacomo | 174 | } |
221 | giacomo | 175 | |
241 | giacomo | 176 | POSIXSTAR_setbudget(local_scheduler_level, *thread, (int)(server)); |
234 | giacomo | 177 | |
241 | giacomo | 178 | task_activate(*thread); |
221 | giacomo | 179 | |
180 | break; |
||
181 | case FSF_SCHEDULER_EDF: |
||
182 | |||
250 | giacomo | 183 | hard_task_def_arg(*(HARD_TASK_MODEL *)(local_scheduler_arg),arg); |
184 | hard_task_def_level(*(HARD_TASK_MODEL *)(local_scheduler_arg),local_scheduler_level); |
||
185 | |||
186 | *thread = task_create("EDFSTAR", thread_code, local_scheduler_arg, NULL); |
||
187 | if (*thread == NIL) |
||
188 | return FSF_ERR_CREATE_THREAD; |
||
189 | |||
190 | EDFSTAR_setbudget(local_scheduler_level, *thread, (int)(server)); |
||
191 | |||
192 | task_activate(*thread); |
||
193 | |||
221 | giacomo | 194 | break; |
235 | giacomo | 195 | |
221 | giacomo | 196 | case FSF_SCHEDULER_RM: |
235 | giacomo | 197 | |
221 | giacomo | 198 | default: |
241 | giacomo | 199 | return FSF_ERR_INVALID_SERVER; |
221 | giacomo | 200 | break; |
201 | } |
||
202 | |||
203 | return 0; |
||
204 | |||
205 | } |
||
206 | |||
207 | int fsf_get_server |
||
208 | (fsf_server_id_t *server, |
||
209 | pthread_t thread) |
||
210 | { |
||
211 | int local_scheduler_level, scheduler_id; |
||
212 | |||
241 | giacomo | 213 | local_scheduler_level = SERVER_get_local_scheduler_level_from_pid(fsf_server_level,thread); |
214 | scheduler_id = SERVER_get_local_scheduler_id_from_pid(fsf_server_level, thread); |
||
221 | giacomo | 215 | |
216 | switch (scheduler_id) { |
||
217 | case FSF_SCHEDULER_POSIX: |
||
218 | return POSIXSTAR_getbudget(local_scheduler_level,thread); |
||
219 | case FSF_SCHEDULER_EDF: |
||
235 | giacomo | 220 | return EDFSTAR_getbudget(local_scheduler_level,thread); |
221 | giacomo | 221 | case FSF_SCHEDULER_RM: |
235 | giacomo | 222 | return RMSTAR_getbudget(local_scheduler_level,thread); |
223 | default: |
||
221 | giacomo | 224 | return -1; |
225 | } |
||
226 | |||
227 | return -1; |
||
228 | |||
229 | } |
||
230 | |||
231 | int fsf_cancel_contract |
||
232 | (fsf_server_id_t *server) |
||
233 | { |
||
234 | |||
235 | int local_scheduler_level, scheduler_id; |
||
236 | |||
237 | #ifdef FSF_DEBUG |
||
238 | kern_printf("(Remove server %d)",*server); |
||
239 | #endif |
||
240 | |||
241 | /* Check server id */ |
||
242 | if (*server < 0) |
||
243 | return FSF_ERR_INVALID_SERVER; |
||
244 | |||
241 | giacomo | 245 | local_scheduler_level = SERVER_get_local_scheduler_level_from_budget(fsf_server_level,*server); |
246 | scheduler_id = SERVER_get_local_scheduler_id_from_budget(fsf_server_level,*server); |
||
221 | giacomo | 247 | |
248 | switch (scheduler_id) { |
||
249 | case FSF_SCHEDULER_POSIX: |
||
250 | |||
251 | /* Check if some thread use the server */ |
||
252 | if(POSIXSTAR_budget_has_thread(local_scheduler_level,*server)) |
||
253 | return FSF_ERR_SERVER_USED; |
||
254 | |||
255 | break; |
||
256 | case FSF_SCHEDULER_EDF: |
||
235 | giacomo | 257 | /* Check if some thread use the server */ |
258 | if(EDFSTAR_budget_has_thread(local_scheduler_level,*server)) |
||
259 | return FSF_ERR_SERVER_USED; |
||
260 | break; |
||
261 | |||
221 | giacomo | 262 | case FSF_SCHEDULER_RM: |
235 | giacomo | 263 | /* Check if some thread use the server */ |
264 | if(RMSTAR_budget_has_thread(local_scheduler_level,*server)) |
||
265 | return FSF_ERR_SERVER_USED; |
||
266 | |||
221 | giacomo | 267 | break; |
268 | } |
||
269 | |||
241 | giacomo | 270 | SERVER_removebudget(fsf_server_level,*server); |
221 | giacomo | 271 | |
272 | level_free_descriptor(local_scheduler_level); |
||
273 | |||
274 | remove_contract(*server); |
||
275 | |||
276 | *server = -1; |
||
277 | |||
278 | return 0; |
||
279 | |||
280 | } |
||
281 | |||
282 | int fsf_renegotiate_contract |
||
283 | (const fsf_contract_parameters_t *new_contract, |
||
284 | fsf_server_id_t server) |
||
285 | { |
||
286 | |||
287 | #ifdef FSF_DEBUG |
||
288 | kern_printf("(Renegotiate for server %d)",server); |
||
289 | #endif |
||
290 | |||
291 | if (!new_contract) |
||
292 | return FSF_ERR_NOT_INITIALIZED; |
||
293 | |||
294 | if (server < 0) |
||
295 | return FSF_ERR_INVALID_SERVER; |
||
296 | |||
241 | giacomo | 297 | return adjust_SERVER_budget_from_contract(new_contract,server); |
221 | giacomo | 298 | |
299 | } |
||
241 | giacomo | 300 |