6 #include "../surf/surf_private.h"
7 #include "../simix/private.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc,
13 "Logging specific to MC (global)");
15 /* MC global data structures */
17 mc_state_t mc_current_state = NULL;
18 char mc_replay_mode = FALSE;
19 double *mc_time = NULL;
20 mc_snapshot_t initial_snapshot = NULL;
24 xbt_fifo_t mc_stack_safety_stateful = NULL;
25 xbt_fifo_t mc_stack_safety_stateless = NULL;
26 mc_stats_t mc_stats = NULL;
30 xbt_fifo_t mc_stack_liveness_stateful = NULL;
31 mc_stats_pair_t mc_stats_pair = NULL;
32 xbt_fifo_t mc_stack_liveness_stateless = NULL;
36 * \brief Initialize the model-checker data structures
38 void MC_init_safety_stateless(void)
41 /* Check if MC is already initialized */
45 mc_time = xbt_new0(double, simix_process_maxpid);
47 /* Initialize the data structures that must be persistent across every
48 iteration of the model-checker (in RAW memory) */
51 /* Initialize statistics */
52 mc_stats = xbt_new0(s_mc_stats_t, 1);
53 mc_stats->state_size = 1;
55 /* Create exploration stack */
56 mc_stack_safety_stateless = xbt_fifo_new();
63 /* Save the initial state */
64 initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
65 MC_take_snapshot(initial_snapshot);
69 void MC_init_safety_stateful(void){
72 /* Check if MC is already initialized */
76 mc_time = xbt_new0(double, simix_process_maxpid);
78 /* Initialize the data structures that must be persistent across every
79 iteration of the model-checker (in RAW memory) */
82 /* Initialize statistics */
83 mc_stats = xbt_new0(s_mc_stats_t, 1);
84 mc_stats->state_size = 1;
86 /* Create exploration stack */
87 mc_stack_safety_stateful = xbt_fifo_new();
91 MC_dpor_stateful_init();
96 void MC_init_liveness_stateful(xbt_automaton_t a){
98 XBT_DEBUG("Start init mc");
100 mc_time = xbt_new0(double, simix_process_maxpid);
102 /* Initialize the data structures that must be persistent across every
103 iteration of the model-checker (in RAW memory) */
107 /* Initialize statistics */
108 mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
109 //mc_stats = xbt_new0(s_mc_stats_t, 1);
111 XBT_DEBUG("Creating snapshot_stack");
113 /* Create exploration stack */
114 mc_stack_liveness_stateful = xbt_fifo_new();
119 //MC_vddfs_stateful_init(a);
120 MC_ddfs_stateful_init(a);
125 void MC_init_liveness_stateless(xbt_automaton_t a){
127 XBT_DEBUG("Start init mc");
129 mc_time = xbt_new0(double, simix_process_maxpid);
131 /* Initialize the data structures that must be persistent across every
132 iteration of the model-checker (in RAW memory) */
136 /* Initialize statistics */
137 mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
139 XBT_DEBUG("Creating stack");
141 /* Create exploration stack */
142 mc_stack_liveness_stateless = xbt_fifo_new();
146 MC_ddfs_stateless_init(a);
152 void MC_modelcheck(void)
154 MC_init_safety_stateless();
159 void MC_modelcheck_stateful(void)
161 MC_init_safety_stateful();
166 void MC_modelcheck_liveness_stateful(xbt_automaton_t a){
167 MC_init_liveness_stateful(a);
171 void MC_modelcheck_liveness_stateless(xbt_automaton_t a){
172 MC_init_liveness_stateless(a);
176 void MC_exit_liveness(void)
178 MC_print_statistics_pairs(mc_stats_pair);
186 MC_print_statistics(mc_stats);
192 int MC_random(int min, int max)
194 /*FIXME: return mc_current_state->executed_transition->random.value;*/
199 * \brief Schedules all the process that are ready to run
201 void MC_wait_for_requests(void)
203 smx_process_t process;
207 while (xbt_dynar_length(simix_global->process_to_run)) {
208 SIMIX_process_runall();
209 xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
210 req = &process->request;
211 if (req->call != REQ_NO_REQ && !MC_request_is_visible(req))
212 SIMIX_request_pre(req, 0);
217 int MC_deadlock_check()
219 int deadlock = FALSE;
220 smx_process_t process;
221 if(xbt_swag_size(simix_global->process_list)){
223 xbt_swag_foreach(process, simix_global->process_list){
224 if(process->request.call != REQ_NO_REQ
225 && MC_request_is_enabled(&process->request)){
235 * \brief Re-executes from the initial state all the transitions indicated by
236 * a given model-checker stack.
237 * \param stack The stack with the transitions to execute.
239 void MC_replay(xbt_fifo_t stack)
243 smx_req_t req = NULL, saved_req = NULL;
244 xbt_fifo_item_t item;
247 XBT_DEBUG("**** Begin Replay ****");
249 /* Restore the initial state */
250 MC_restore_snapshot(initial_snapshot);
251 /* At the moment of taking the snapshot the raw heap was set, so restoring
252 * it will set it back again, we have to unset it to continue */
255 /* Traverse the stack from the initial state and re-execute the transitions */
256 for (item = xbt_fifo_get_last_item(stack);
257 item != xbt_fifo_get_first_item(stack);
258 item = xbt_fifo_get_prev_item(item)) {
260 state = (mc_state_t) xbt_fifo_get_item_content(item);
261 saved_req = MC_state_get_executed_request(state, &value);
264 /* because we got a copy of the executed request, we have to fetch the
265 real one, pointed by the request field of the issuer process */
266 req = &saved_req->issuer->request;
268 /* Debug information */
269 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
270 req_str = MC_request_to_string(req, value);
271 XBT_DEBUG("Replay: %s (%p)", req_str, state);
276 SIMIX_request_pre(req, value);
277 MC_wait_for_requests();
279 /* Update statistics */
280 mc_stats->visited_states++;
281 mc_stats->executed_transitions++;
283 XBT_DEBUG("**** End Replay ****");
286 void MC_replay_liveness(xbt_fifo_t stack)
290 smx_req_t req = NULL, saved_req = NULL;
291 xbt_fifo_item_t item;
293 mc_pair_stateless_t pair;
295 XBT_DEBUG("**** Begin Replay ****");
297 /* Restore the initial state */
298 MC_restore_snapshot(initial_snapshot);
299 /* At the moment of taking the snapshot the raw heap was set, so restoring
300 * it will set it back again, we have to unset it to continue */
303 /* Traverse the stack from the initial state and re-execute the transitions */
304 for (item = xbt_fifo_get_last_item(stack);
305 item != xbt_fifo_get_first_item(stack);
306 item = xbt_fifo_get_prev_item(item)) {
308 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
309 state = (mc_state_t) pair->graph_state;
310 saved_req = MC_state_get_executed_request(state, &value);
311 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
313 if(saved_req != NULL){
314 /* because we got a copy of the executed request, we have to fetch the
315 real one, pointed by the request field of the issuer process */
316 req = &saved_req->issuer->request;
317 //XBT_DEBUG("Req->call %u", req->call);
319 /* Debug information */
320 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
321 req_str = MC_request_to_string(req, value);
322 XBT_DEBUG("Replay: %s (%p)", req_str, state);
327 SIMIX_request_pre(req, value);
328 MC_wait_for_requests();
330 /* Update statistics */
331 mc_stats_pair->visited_pairs++;
333 XBT_DEBUG("**** End Replay ****");
338 * \brief Dumps the contents of a model-checker's stack and shows the actual
340 * \param stack The stack to dump
342 void MC_dump_stack_safety_stateless(xbt_fifo_t stack)
346 MC_show_stack_safety_stateless(stack);
349 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
350 MC_state_delete(state);
355 void MC_show_stack_safety_stateless(xbt_fifo_t stack)
359 xbt_fifo_item_t item;
361 char *req_str = NULL;
363 for (item = xbt_fifo_get_last_item(stack);
364 (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
365 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
366 req = MC_state_get_executed_request(state, &value);
368 req_str = MC_request_to_string(req, value);
369 XBT_INFO("%s", req_str);
375 void MC_show_deadlock(smx_req_t req)
377 /*char *req_str = NULL;*/
378 XBT_INFO("**************************");
379 XBT_INFO("*** DEAD-LOCK DETECTED ***");
380 XBT_INFO("**************************");
381 XBT_INFO("Locked request:");
382 /*req_str = MC_request_to_string(req);
383 XBT_INFO("%s", req_str);
385 XBT_INFO("Counter-example execution trace:");
386 MC_dump_stack_safety_stateless(mc_stack_safety_stateless);
389 void MC_show_deadlock_stateful(smx_req_t req)
391 /*char *req_str = NULL;*/
392 XBT_INFO("**************************");
393 XBT_INFO("*** DEAD-LOCK DETECTED ***");
394 XBT_INFO("**************************");
395 XBT_INFO("Locked request:");
396 /*req_str = MC_request_to_string(req);
397 XBT_INFO("%s", req_str);
399 XBT_INFO("Counter-example execution trace:");
400 MC_show_stack_safety_stateful(mc_stack_safety_stateful);
403 void MC_dump_stack_safety_stateful(xbt_fifo_t stack)
405 //mc_state_ws_t state;
407 MC_show_stack_safety_stateful(stack);
410 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
411 MC_state_delete(state);
416 void MC_show_stack_safety_stateful(xbt_fifo_t stack)
420 xbt_fifo_item_t item;
422 char *req_str = NULL;
424 for (item = xbt_fifo_get_last_item(stack);
425 (item ? (state = (mc_state_ws_t) (xbt_fifo_get_item_content(item)))
426 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
427 req = MC_state_get_executed_request(state->graph_state, &value);
429 req_str = MC_request_to_string(req, value);
430 XBT_INFO("%s", req_str);
436 void MC_show_stack_liveness_stateful(xbt_fifo_t stack){
439 xbt_fifo_item_t item;
441 char *req_str = NULL;
443 for (item = xbt_fifo_get_last_item(stack);
444 (item ? (pair = (mc_pair_t) (xbt_fifo_get_item_content(item)))
445 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
446 req = MC_state_get_executed_request(pair->graph_state, &value);
448 req_str = MC_request_to_string(req, value);
449 XBT_INFO("%s", req_str);
455 void MC_dump_stack_liveness_stateful(xbt_fifo_t stack){
459 while ((pair = (mc_pair_t) xbt_fifo_pop(stack)) != NULL)
460 MC_pair_delete(pair);
464 void MC_show_stack_liveness_stateless(xbt_fifo_t stack){
466 mc_pair_stateless_t pair;
467 xbt_fifo_item_t item;
469 char *req_str = NULL;
471 for (item = xbt_fifo_get_last_item(stack);
472 (item ? (pair = (mc_pair_stateless_t) (xbt_fifo_get_item_content(item)))
473 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
474 req = MC_state_get_executed_request(pair->graph_state, &value);
476 req_str = MC_request_to_string(req, value);
477 XBT_INFO("%s", req_str);
483 void MC_dump_stack_liveness_stateless(xbt_fifo_t stack){
484 mc_pair_stateless_t pair;
487 while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL)
488 MC_pair_stateless_delete(pair);
493 void MC_print_statistics(mc_stats_t stats)
495 XBT_INFO("State space size ~= %lu", stats->state_size);
496 XBT_INFO("Expanded states = %lu", stats->expanded_states);
497 XBT_INFO("Visited states = %lu", stats->visited_states);
498 XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
499 XBT_INFO("Expanded / Visited = %lf",
500 (double) stats->visited_states / stats->expanded_states);
501 /*XBT_INFO("Exploration coverage = %lf",
502 (double)stats->expanded_states / stats->state_size); */
505 void MC_print_statistics_pairs(mc_stats_pair_t stats)
507 XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
508 XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
509 //XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
510 XBT_INFO("Expanded / Visited = %lf",
511 (double) stats->visited_pairs / stats->expanded_pairs);
512 /*XBT_INFO("Exploration coverage = %lf",
513 (double)stats->expanded_states / stats->state_size); */
516 void MC_assert(int prop)
518 if (MC_IS_ENABLED && !prop) {
519 XBT_INFO("**************************");
520 XBT_INFO("*** PROPERTY NOT VALID ***");
521 XBT_INFO("**************************");
522 XBT_INFO("Counter-example execution trace:");
523 MC_dump_stack_safety_stateless(mc_stack_safety_stateless);
524 MC_print_statistics(mc_stats);
529 void MC_assert_stateful(int prop)
531 if (MC_IS_ENABLED && !prop) {
532 XBT_INFO("**************************");
533 XBT_INFO("*** PROPERTY NOT VALID ***");
534 XBT_INFO("**************************");
535 XBT_INFO("Counter-example execution trace:");
536 MC_dump_stack_safety_stateful(mc_stack_safety_stateful);
537 MC_print_statistics(mc_stats);
542 void MC_assert_pair_stateful(int prop){
543 if (MC_IS_ENABLED && !prop) {
544 XBT_INFO("**************************");
545 XBT_INFO("*** PROPERTY NOT VALID ***");
546 XBT_INFO("**************************");
547 //XBT_INFO("Counter-example execution trace:");
548 MC_show_stack_liveness_stateful(mc_stack_liveness_stateful);
549 //MC_dump_snapshot_stack(mc_snapshot_stack);
550 MC_print_statistics_pairs(mc_stats_pair);
555 void MC_assert_pair_stateless(int prop){
556 if (MC_IS_ENABLED && !prop) {
557 XBT_INFO("**************************");
558 XBT_INFO("*** PROPERTY NOT VALID ***");
559 XBT_INFO("**************************");
560 //XBT_INFO("Counter-example execution trace:");
561 MC_show_stack_liveness_stateless(mc_stack_liveness_stateless);
562 //MC_dump_snapshot_stack(mc_snapshot_stack);
563 MC_print_statistics_pairs(mc_stats_pair);
568 void MC_process_clock_add(smx_process_t process, double amount)
570 mc_time[process->pid] += amount;
573 double MC_process_clock_get(smx_process_t process)
576 return mc_time[process->pid];