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_ddfs_stateful_init(a);
124 void MC_init_liveness_stateless(xbt_automaton_t a, char *prgm){
126 XBT_DEBUG("Start init mc");
128 mc_time = xbt_new0(double, simix_process_maxpid);
130 /* Initialize the data structures that must be persistent across every
131 iteration of the model-checker (in RAW memory) */
135 /* Initialize statistics */
136 mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
138 XBT_DEBUG("Creating stack");
140 /* Create exploration stack */
141 mc_stack_liveness_stateless = xbt_fifo_new();
145 MC_ddfs_stateless_init(a, prgm);
151 void MC_modelcheck(void)
153 MC_init_safety_stateless();
158 void MC_modelcheck_stateful(void)
160 MC_init_safety_stateful();
165 void MC_modelcheck_liveness_stateful(xbt_automaton_t a){
166 MC_init_liveness_stateful(a);
170 void MC_modelcheck_liveness_stateless(xbt_automaton_t a, char *prgm){
171 MC_init_liveness_stateless(a, prgm);
175 void MC_exit_liveness(void)
177 MC_print_statistics_pairs(mc_stats_pair);
185 MC_print_statistics(mc_stats);
191 int MC_random(int min, int max)
193 /*FIXME: return mc_current_state->executed_transition->random.value;*/
198 * \brief Schedules all the process that are ready to run
200 void MC_wait_for_requests(void)
202 smx_process_t process;
206 while (xbt_dynar_length(simix_global->process_to_run)) {
207 SIMIX_process_runall();
208 xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
209 req = &process->request;
210 if (req->call != REQ_NO_REQ && !MC_request_is_visible(req))
211 SIMIX_request_pre(req, 0);
216 int MC_deadlock_check()
218 int deadlock = FALSE;
219 smx_process_t process;
220 if(xbt_swag_size(simix_global->process_list)){
222 xbt_swag_foreach(process, simix_global->process_list){
223 if(process->request.call != REQ_NO_REQ
224 && MC_request_is_enabled(&process->request)){
234 * \brief Re-executes from the initial state all the transitions indicated by
235 * a given model-checker stack.
236 * \param stack The stack with the transitions to execute.
238 void MC_replay(xbt_fifo_t stack)
242 smx_req_t req = NULL, saved_req = NULL;
243 xbt_fifo_item_t item;
246 XBT_DEBUG("**** Begin Replay ****");
248 /* Restore the initial state */
249 MC_restore_snapshot(initial_snapshot);
250 /* At the moment of taking the snapshot the raw heap was set, so restoring
251 * it will set it back again, we have to unset it to continue */
254 /* Traverse the stack from the initial state and re-execute the transitions */
255 for (item = xbt_fifo_get_last_item(stack);
256 item != xbt_fifo_get_first_item(stack);
257 item = xbt_fifo_get_prev_item(item)) {
259 state = (mc_state_t) xbt_fifo_get_item_content(item);
260 saved_req = MC_state_get_executed_request(state, &value);
263 /* because we got a copy of the executed request, we have to fetch the
264 real one, pointed by the request field of the issuer process */
265 req = &saved_req->issuer->request;
267 /* Debug information */
268 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
269 req_str = MC_request_to_string(req, value);
270 XBT_DEBUG("Replay: %s (%p)", req_str, state);
275 SIMIX_request_pre(req, value);
276 MC_wait_for_requests();
278 /* Update statistics */
279 mc_stats->visited_states++;
280 mc_stats->executed_transitions++;
282 XBT_DEBUG("**** End Replay ****");
285 void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
289 smx_req_t req = NULL, saved_req = NULL;
290 xbt_fifo_item_t item;
292 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 */
305 item = xbt_fifo_get_last_item(stack);
307 while(depth <= xbt_fifo_size(stack)){
309 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
310 state = (mc_state_t) pair->graph_state;
312 if(pair->requests > 0){
314 saved_req = MC_state_get_executed_request(state, &value);
315 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
317 if(saved_req != NULL){
318 /* because we got a copy of the executed request, we have to fetch the
319 real one, pointed by the request field of the issuer process */
320 req = &saved_req->issuer->request;
321 //XBT_DEBUG("Req->call %u", req->call);
323 /* Debug information */
324 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
325 req_str = MC_request_to_string(req, value);
326 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
332 SIMIX_request_pre(req, value);
333 MC_wait_for_requests();
338 /* Update statistics */
339 mc_stats_pair->visited_pairs++;
341 item = xbt_fifo_get_prev_item(item);
346 /* Traverse the stack from the initial state and re-execute the transitions */
347 for (item = xbt_fifo_get_last_item(stack);
348 item != xbt_fifo_get_first_item(stack);
349 item = xbt_fifo_get_prev_item(item)) {
351 pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
352 state = (mc_state_t) pair->graph_state;
354 if(pair->requests > 0){
356 saved_req = MC_state_get_executed_request(state, &value);
357 //XBT_DEBUG("SavedReq->call %u", saved_req->call);
359 if(saved_req != NULL){
360 /* because we got a copy of the executed request, we have to fetch the
361 real one, pointed by the request field of the issuer process */
362 req = &saved_req->issuer->request;
363 //XBT_DEBUG("Req->call %u", req->call);
365 /* Debug information */
366 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
367 req_str = MC_request_to_string(req, value);
368 XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
374 SIMIX_request_pre(req, value);
375 MC_wait_for_requests();
380 /* Update statistics */
381 mc_stats_pair->visited_pairs++;
385 XBT_DEBUG("**** End Replay ****");
390 * \brief Dumps the contents of a model-checker's stack and shows the actual
392 * \param stack The stack to dump
394 void MC_dump_stack_safety_stateless(xbt_fifo_t stack)
398 MC_show_stack_safety_stateless(stack);
401 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
402 MC_state_delete(state);
407 void MC_show_stack_safety_stateless(xbt_fifo_t stack)
411 xbt_fifo_item_t item;
413 char *req_str = NULL;
415 for (item = xbt_fifo_get_last_item(stack);
416 (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
417 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
418 req = MC_state_get_executed_request(state, &value);
420 req_str = MC_request_to_string(req, value);
421 XBT_INFO("%s", req_str);
427 void MC_show_deadlock(smx_req_t req)
429 /*char *req_str = NULL;*/
430 XBT_INFO("**************************");
431 XBT_INFO("*** DEAD-LOCK DETECTED ***");
432 XBT_INFO("**************************");
433 XBT_INFO("Locked request:");
434 /*req_str = MC_request_to_string(req);
435 XBT_INFO("%s", req_str);
437 XBT_INFO("Counter-example execution trace:");
438 MC_dump_stack_safety_stateless(mc_stack_safety_stateless);
441 void MC_show_deadlock_stateful(smx_req_t req)
443 /*char *req_str = NULL;*/
444 XBT_INFO("**************************");
445 XBT_INFO("*** DEAD-LOCK DETECTED ***");
446 XBT_INFO("**************************");
447 XBT_INFO("Locked request:");
448 /*req_str = MC_request_to_string(req);
449 XBT_INFO("%s", req_str);
451 XBT_INFO("Counter-example execution trace:");
452 MC_show_stack_safety_stateful(mc_stack_safety_stateful);
455 void MC_dump_stack_safety_stateful(xbt_fifo_t stack)
457 //mc_state_ws_t state;
459 MC_show_stack_safety_stateful(stack);
462 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
463 MC_state_delete(state);
468 void MC_show_stack_safety_stateful(xbt_fifo_t stack)
472 xbt_fifo_item_t item;
474 char *req_str = NULL;
476 for (item = xbt_fifo_get_last_item(stack);
477 (item ? (state = (mc_state_ws_t) (xbt_fifo_get_item_content(item)))
478 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
479 req = MC_state_get_executed_request(state->graph_state, &value);
481 req_str = MC_request_to_string(req, value);
482 XBT_INFO("%s", req_str);
488 void MC_show_stack_liveness_stateful(xbt_fifo_t stack){
491 xbt_fifo_item_t item;
493 char *req_str = NULL;
495 for (item = xbt_fifo_get_last_item(stack);
496 (item ? (pair = (mc_pair_t) (xbt_fifo_get_item_content(item)))
497 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
498 req = MC_state_get_executed_request(pair->graph_state, &value);
500 req_str = MC_request_to_string(req, value);
501 XBT_INFO("%s", req_str);
507 void MC_dump_stack_liveness_stateful(xbt_fifo_t stack){
511 while ((pair = (mc_pair_t) xbt_fifo_pop(stack)) != NULL)
512 MC_pair_delete(pair);
516 void MC_show_stack_liveness_stateless(xbt_fifo_t stack){
518 mc_pair_stateless_t pair;
519 xbt_fifo_item_t item;
521 char *req_str = NULL;
523 for (item = xbt_fifo_get_last_item(stack);
524 (item ? (pair = (mc_pair_stateless_t) (xbt_fifo_get_item_content(item)))
525 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
526 req = MC_state_get_executed_request(pair->graph_state, &value);
528 if(pair->requests>0){
529 req_str = MC_request_to_string(req, value);
530 XBT_INFO("%s", req_str);
533 XBT_INFO("End of system requests but evolution in Büchi automaton");
539 void MC_dump_stack_liveness_stateless(xbt_fifo_t stack){
540 mc_pair_stateless_t pair;
543 while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL)
544 MC_pair_stateless_delete(pair);
549 void MC_print_statistics(mc_stats_t stats)
551 XBT_INFO("State space size ~= %lu", stats->state_size);
552 XBT_INFO("Expanded states = %lu", stats->expanded_states);
553 XBT_INFO("Visited states = %lu", stats->visited_states);
554 XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
555 XBT_INFO("Expanded / Visited = %lf",
556 (double) stats->visited_states / stats->expanded_states);
557 /*XBT_INFO("Exploration coverage = %lf",
558 (double)stats->expanded_states / stats->state_size); */
561 void MC_print_statistics_pairs(mc_stats_pair_t stats)
563 XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
564 XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
565 //XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
566 XBT_INFO("Expanded / Visited = %lf",
567 (double) stats->visited_pairs / stats->expanded_pairs);
568 /*XBT_INFO("Exploration coverage = %lf",
569 (double)stats->expanded_states / stats->state_size); */
572 void MC_assert(int prop)
574 if (MC_IS_ENABLED && !prop) {
575 XBT_INFO("**************************");
576 XBT_INFO("*** PROPERTY NOT VALID ***");
577 XBT_INFO("**************************");
578 XBT_INFO("Counter-example execution trace:");
579 MC_dump_stack_safety_stateless(mc_stack_safety_stateless);
580 MC_print_statistics(mc_stats);
585 void MC_assert_stateful(int prop)
587 if (MC_IS_ENABLED && !prop) {
588 XBT_INFO("**************************");
589 XBT_INFO("*** PROPERTY NOT VALID ***");
590 XBT_INFO("**************************");
591 XBT_INFO("Counter-example execution trace:");
592 MC_dump_stack_safety_stateful(mc_stack_safety_stateful);
593 MC_print_statistics(mc_stats);
598 void MC_assert_pair_stateful(int prop){
599 if (MC_IS_ENABLED && !prop) {
600 XBT_INFO("**************************");
601 XBT_INFO("*** PROPERTY NOT VALID ***");
602 XBT_INFO("**************************");
603 //XBT_INFO("Counter-example execution trace:");
604 MC_show_stack_liveness_stateful(mc_stack_liveness_stateful);
605 //MC_dump_snapshot_stack(mc_snapshot_stack);
606 MC_print_statistics_pairs(mc_stats_pair);
611 void MC_assert_pair_stateless(int prop){
612 if (MC_IS_ENABLED && !prop) {
613 XBT_INFO("**************************");
614 XBT_INFO("*** PROPERTY NOT VALID ***");
615 XBT_INFO("**************************");
616 //XBT_INFO("Counter-example execution trace:");
617 MC_show_stack_liveness_stateless(mc_stack_liveness_stateless);
618 //MC_dump_snapshot_stack(mc_snapshot_stack);
619 MC_print_statistics_pairs(mc_stats_pair);
624 void MC_process_clock_add(smx_process_t process, double amount)
626 mc_time[process->pid] += amount;
629 double MC_process_clock_get(smx_process_t process)
632 return mc_time[process->pid];