5 #include "../surf/surf_private.h"
6 #include "../simix/private.h"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc,
12 "Logging specific to MC (global)");
14 /* MC global data structures */
15 mc_snapshot_t initial_snapshot = NULL;
16 xbt_fifo_t mc_stack = NULL;
17 mc_stats_t mc_stats = NULL;
18 mc_stats_pair_t mc_stats_pair = NULL;
19 mc_state_t mc_current_state = NULL;
20 char mc_replay_mode = FALSE;
21 double *mc_time = NULL;
22 xbt_fifo_t mc_snapshot_stack = NULL;
25 * \brief Initialize the model-checker data structures
29 /* Check if MC is already initialized */
33 mc_time = xbt_new0(double, simix_process_maxpid);
35 /* Initialize the data structures that must be persistent across every
36 iteration of the model-checker (in RAW memory) */
39 /* Initialize statistics */
40 mc_stats = xbt_new0(s_mc_stats_t, 1);
41 mc_stats->state_size = 1;
43 /* Create exploration stack */
44 mc_stack = xbt_fifo_new();
51 /* Save the initial state */
52 initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
53 MC_take_snapshot(initial_snapshot);
57 void MC_init_stateful(void){
59 /* Check if MC is already initialized */
63 mc_time = xbt_new0(double, simix_process_maxpid);
65 /* Initialize the data structures that must be persistent across every
66 iteration of the model-checker (in RAW memory) */
69 /* Initialize statistics */
70 mc_stats = xbt_new0(s_mc_stats_t, 1);
71 mc_stats->state_size = 1;
73 /* Create exploration stack */
74 mc_snapshot_stack = xbt_fifo_new();
78 MC_dpor_stateful_init();
83 void MC_init_with_automaton(xbt_automaton_t a){
85 XBT_DEBUG("Start init mc");
87 mc_time = xbt_new0(double, simix_process_maxpid);
89 /* Initialize the data structures that must be persistent across every
90 iteration of the model-checker (in RAW memory) */
94 /* Initialize statistics */
95 mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
96 mc_stats = xbt_new0(s_mc_stats_t, 1);
97 //mc_stats_pair->pair_size = 1;
99 XBT_DEBUG("Creating snapshot_stack");
101 /* Create exploration stack */
102 mc_snapshot_stack = xbt_fifo_new();
107 //MC_vddfs_with_restore_snapshot_init(a);
108 //MC_ddfs_with_restore_snapshot_init(a);
114 void MC_modelcheck(void)
121 void MC_modelcheck_stateful(void)
128 void MC_modelcheck_with_automaton(xbt_automaton_t a){
129 MC_init_with_automaton(a);
130 MC_exit_with_automaton();
133 void MC_exit_with_automaton(void)
135 MC_print_statistics_pairs(mc_stats_pair);
142 MC_print_statistics(mc_stats);
148 int MC_random(int min, int max)
150 /*FIXME: return mc_current_state->executed_transition->random.value;*/
155 * \brief Schedules all the process that are ready to run
157 void MC_wait_for_requests(void)
159 smx_process_t process;
163 while (xbt_dynar_length(simix_global->process_to_run)) {
164 SIMIX_process_runall();
165 xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
166 req = &process->request;
167 if (req->call != REQ_NO_REQ && !MC_request_is_visible(req))
168 SIMIX_request_pre(req, 0);
173 int MC_deadlock_check()
175 int deadlock = FALSE;
176 smx_process_t process;
177 if(xbt_swag_size(simix_global->process_list)){
179 xbt_swag_foreach(process, simix_global->process_list){
180 if(process->request.call != REQ_NO_REQ
181 && MC_request_is_enabled(&process->request)){
191 * \brief Re-executes from the initial state all the transitions indicated by
192 * a given model-checker stack.
193 * \param stack The stack with the transitions to execute.
195 void MC_replay(xbt_fifo_t stack)
199 smx_req_t req = NULL, saved_req = NULL;
200 xbt_fifo_item_t item;
203 XBT_DEBUG("**** Begin Replay ****");
205 /* Restore the initial state */
206 MC_restore_snapshot(initial_snapshot);
207 /* At the moment of taking the snapshot the raw heap was set, so restoring
208 * it will set it back again, we have to unset it to continue */
211 /* Traverse the stack from the initial state and re-execute the transitions */
212 for (item = xbt_fifo_get_last_item(stack);
213 item != xbt_fifo_get_first_item(stack);
214 item = xbt_fifo_get_prev_item(item)) {
216 state = (mc_state_t) xbt_fifo_get_item_content(item);
217 saved_req = MC_state_get_executed_request(state, &value);
220 /* because we got a copy of the executed request, we have to fetch the
221 real one, pointed by the request field of the issuer process */
222 req = &saved_req->issuer->request;
224 /* Debug information */
225 if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
226 req_str = MC_request_to_string(req, value);
227 XBT_DEBUG("Replay: %s (%p)", req_str, state);
232 SIMIX_request_pre(req, value);
233 MC_wait_for_requests();
235 /* Update statistics */
236 mc_stats->visited_states++;
237 mc_stats->executed_transitions++;
239 XBT_DEBUG("**** End Replay ****");
243 * \brief Dumps the contents of a model-checker's stack and shows the actual
245 * \param stack The stack to dump
247 void MC_dump_stack(xbt_fifo_t stack)
251 MC_show_stack(stack);
254 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
255 MC_state_delete(state);
260 void MC_show_stack(xbt_fifo_t stack)
264 xbt_fifo_item_t item;
266 char *req_str = NULL;
268 for (item = xbt_fifo_get_last_item(stack);
269 (item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
270 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
271 req = MC_state_get_executed_request(state, &value);
273 req_str = MC_request_to_string(req, value);
274 XBT_INFO("%s", req_str);
280 void MC_show_deadlock(smx_req_t req)
282 /*char *req_str = NULL;*/
283 XBT_INFO("**************************");
284 XBT_INFO("*** DEAD-LOCK DETECTED ***");
285 XBT_INFO("**************************");
286 XBT_INFO("Locked request:");
287 /*req_str = MC_request_to_string(req);
288 XBT_INFO("%s", req_str);
290 XBT_INFO("Counter-example execution trace:");
291 MC_dump_stack(mc_stack);
294 void MC_show_deadlock_stateful(smx_req_t req)
296 /*char *req_str = NULL;*/
297 XBT_INFO("**************************");
298 XBT_INFO("*** DEAD-LOCK DETECTED ***");
299 XBT_INFO("**************************");
300 XBT_INFO("Locked request:");
301 /*req_str = MC_request_to_string(req);
302 XBT_INFO("%s", req_str);
304 XBT_INFO("Counter-example execution trace:");
305 MC_show_stack_stateful(mc_snapshot_stack);
308 void MC_dump_stack_stateful(xbt_fifo_t stack)
310 //mc_state_ws_t state;
312 MC_show_stack_stateful(stack);
315 while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
316 MC_state_delete(state);
321 void MC_show_stack_stateful(xbt_fifo_t stack)
325 xbt_fifo_item_t item;
327 char *req_str = NULL;
329 for (item = xbt_fifo_get_last_item(stack);
330 (item ? (state = (mc_state_ws_t) (xbt_fifo_get_item_content(item)))
331 : (NULL)); item = xbt_fifo_get_prev_item(item)) {
332 req = MC_state_get_executed_request(state->graph_state, &value);
334 req_str = MC_request_to_string(req, value);
335 XBT_INFO("%s", req_str);
341 void MC_print_statistics(mc_stats_t stats)
343 XBT_INFO("State space size ~= %lu", stats->state_size);
344 XBT_INFO("Expanded states = %lu", stats->expanded_states);
345 XBT_INFO("Visited states = %lu", stats->visited_states);
346 XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
347 XBT_INFO("Expanded / Visited = %lf",
348 (double) stats->visited_states / stats->expanded_states);
349 /*XBT_INFO("Exploration coverage = %lf",
350 (double)stats->expanded_states / stats->state_size); */
353 void MC_print_statistics_pairs(mc_stats_pair_t stats)
355 XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
356 XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
357 //XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
358 XBT_INFO("Expanded / Visited = %lf",
359 (double) stats->visited_pairs / stats->expanded_pairs);
360 /*XBT_INFO("Exploration coverage = %lf",
361 (double)stats->expanded_states / stats->state_size); */
364 void MC_assert(int prop)
366 if (MC_IS_ENABLED && !prop) {
367 XBT_INFO("**************************");
368 XBT_INFO("*** PROPERTY NOT VALID ***");
369 XBT_INFO("**************************");
370 XBT_INFO("Counter-example execution trace:");
371 MC_dump_stack(mc_stack);
372 MC_print_statistics(mc_stats);
377 void MC_assert_stateful(int prop)
379 if (MC_IS_ENABLED && !prop) {
380 XBT_INFO("**************************");
381 XBT_INFO("*** PROPERTY NOT VALID ***");
382 XBT_INFO("**************************");
383 XBT_INFO("Counter-example execution trace:");
384 MC_dump_stack_stateful(mc_snapshot_stack);
385 MC_print_statistics(mc_stats);
390 void MC_assert_pair(int prop){
391 if (MC_IS_ENABLED && !prop) {
392 XBT_INFO("**************************");
393 XBT_INFO("*** PROPERTY NOT VALID ***");
394 XBT_INFO("**************************");
395 //XBT_INFO("Counter-example execution trace:");
396 MC_show_snapshot_stack(mc_snapshot_stack);
397 //MC_dump_snapshot_stack(mc_snapshot_stack);
398 MC_print_statistics_pairs(mc_stats_pair);
403 void MC_process_clock_add(smx_process_t process, double amount)
405 mc_time[process->pid] += amount;
408 double MC_process_clock_get(smx_process_t process)
411 return mc_time[process->pid];