/* MC global data structures */
mc_snapshot_t initial_snapshot = NULL;
xbt_fifo_t mc_stack = NULL;
-xbt_setset_t mc_setset = NULL;
mc_stats_t mc_stats = NULL;
mc_state_t mc_current_state = NULL;
char mc_replay_mode = FALSE;
*/
void MC_init(void)
{
- smx_process_t process;
-
/* Check if MC is already initialized */
if (initial_snapshot)
return;
/* Create exploration stack */
mc_stack = xbt_fifo_new();
- /* Create the container for the sets */
- mc_setset = xbt_setset_new(20);
+ MC_UNSET_RAW_MEM;
- /* Add the existing processes to mc's setset so they have an ID designated */
- /* FIXME: check what happen if there are processes created during the exploration */
- xbt_swag_foreach(process, simix_global->process_list){
- xbt_setset_elm_add(mc_setset, process);
- }
-
MC_dpor_init();
+ MC_SET_RAW_MEM;
/* Save the initial state */
initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
MC_take_snapshot(initial_snapshot);
return 0;
}
+/**
+ * \brief Schedules all the process that are ready to run
+ */
+void MC_wait_for_requests(void)
+{
+ char *req_str = NULL;
+ smx_req_t req = NULL;
+
+ do {
+ SIMIX_context_runall(simix_global->process_to_run);
+ while((req = SIMIX_request_pop())){
+ if(!SIMIX_request_is_visible(req))
+ SIMIX_request_pre(req, 0);
+ else if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
+ req_str = MC_request_to_string(req);
+ DEBUG1("Got: %s", req_str);
+ xbt_free(req_str);
+ }
+ }
+ } while (xbt_dynar_length(simix_global->process_to_run));
+}
+
+int MC_deadlock_check()
+{
+ int deadlock = FALSE;
+ smx_process_t process;
+ if(xbt_swag_size(simix_global->process_list)){
+ deadlock = TRUE;
+ xbt_swag_foreach(process, simix_global->process_list){
+ if(process->request.call != REQ_NO_REQ
+ && SIMIX_request_is_enabled(&process->request)){
+ deadlock = FALSE;
+ break;
+ }
+ }
+ }
+ return deadlock;
+}
+
/**
* \brief Re-executes from the initial state all the transitions indicated by
* a given model-checker stack.
*/
void MC_replay(xbt_fifo_t stack)
{
+ int value;
char *req_str;
smx_req_t req = NULL, saved_req = NULL;
xbt_fifo_item_t item;
/* Restore the initial state */
MC_restore_snapshot(initial_snapshot);
+ /* At the moment of taking the snapshot the raw heap was set, so restoring
+ * it will set it back again, we have to unset it to continue */
+ MC_UNSET_RAW_MEM;
/* Traverse the stack from the initial state and re-execute the transitions */
for (item = xbt_fifo_get_last_item(stack);
item = xbt_fifo_get_prev_item(item)) {
state = (mc_state_t) xbt_fifo_get_item_content(item);
- saved_req = MC_state_get_executed_request(state);
+ saved_req = MC_state_get_executed_request(state, &value);
if(saved_req){
/* because we got a copy of the executed request, we have to fetch the
/* Debug information */
if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
req_str = MC_request_to_string(req);
- DEBUG1("Replay: %s", req_str);
+ DEBUG2("Replay: %s (%p)", req_str, state);
xbt_free(req_str);
}
}
- SIMIX_request_pre(req);
+ SIMIX_request_pre(req, value);
MC_wait_for_requests();
/* Update statistics */
void MC_show_stack(xbt_fifo_t stack)
{
+ int value;
mc_state_t state;
xbt_fifo_item_t item;
smx_req_t req;
for (item = xbt_fifo_get_last_item(stack);
(item ? (state = (mc_state_t) (xbt_fifo_get_item_content(item)))
: (NULL)); item = xbt_fifo_get_prev_item(item)) {
- req = MC_state_get_executed_request(state);
+ req = MC_state_get_executed_request(state, &value);
if(req){
req_str = MC_request_to_string(req);
INFO1("%s", req_str);
}
}
-/**
- * \brief Schedules all the process that are ready to run
- */
-void MC_wait_for_requests(void)
+void MC_show_deadlock(smx_req_t req)
{
- char *req_str = NULL;
- smx_req_t req = NULL;
-
- do {
- SIMIX_context_runall(simix_global->process_to_run);
- while((req = SIMIX_request_pop())){
- if(!SIMIX_request_is_visible(req))
- SIMIX_request_pre(req);
- else if(req->call == REQ_COMM_WAITANY)
- THROW_UNIMPLEMENTED;
- else if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
- req_str = MC_request_to_string(req);
- DEBUG1("Got: %s", req_str);
- xbt_free(req_str);
- }
- }
- } while (xbt_swag_size(simix_global->process_to_run));
+ /*char *req_str = NULL;*/
+ INFO0("**************************");
+ INFO0("*** DEAD-LOCK DETECTED ***");
+ INFO0("**************************");
+ INFO0("Locked request:");
+ /*req_str = MC_request_to_string(req);
+ INFO1("%s", req_str);
+ xbt_free(req_str);*/
+ INFO0("Counter-example execution trace:");
+ MC_dump_stack(mc_stack);
}
-/****************************** Statistics ************************************/
void MC_print_statistics(mc_stats_t stats)
{
INFO1("State space size ~= %lu", stats->state_size);
(double)stats->expanded_states / stats->state_size); */
}
-/************************* Assertion Checking *********************************/
void MC_assert(int prop)
{
if (MC_IS_ENABLED && !prop) {
}
}
-void MC_show_deadlock(smx_req_t req)
-{
- char *req_str = NULL;
- INFO0("**************************");
- INFO0("*** DEAD-LOCK DETECTED ***");
- INFO0("**************************");
- INFO0("Locked request:");
- req_str = MC_request_to_string(req);
- INFO1("%s", req_str);
- xbt_free(req_str);
- INFO0("Counter-example execution trace:");
- MC_dump_stack(mc_stack);
-}
