+/* Copyright (c) 2008-2012 Da SimGrid Team. All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
+#include <sys/time.h>
#include "../surf/surf_private.h"
-#include "../simix/private.h"
+#include "../simix/smx_private.h"
#include "xbt/fifo.h"
-#include "private.h"
-
+#include "mc_private.h"
+#include "xbt/automaton.h"
+XBT_LOG_NEW_CATEGORY(mc, "All MC categories");
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_global, mc,
"Logging specific to MC (global)");
+/* Configuration support */
+e_mc_reduce_t mc_reduce_kind=e_mc_reduce_unset;
+
+extern int _surf_init_status;
+void _mc_cfg_cb_reduce(const char *name, int pos) {
+ if (_surf_init_status && !_surf_do_model_check) {
+ xbt_die("You are specifying a reduction strategy after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
+ }
+ char *val= xbt_cfg_get_string(_surf_cfg_set, name);
+ if (!strcasecmp(val,"none")) {
+ mc_reduce_kind = e_mc_reduce_none;
+ } else if (!strcasecmp(val,"dpor")) {
+ mc_reduce_kind = e_mc_reduce_dpor;
+ } else {
+ xbt_die("configuration option %s can only take 'none' or 'dpor' as a value",name);
+ }
+ xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+
+void _mc_cfg_cb_checkpoint(const char *name, int pos) {
+ if (_surf_init_status && !_surf_do_model_check) {
+ xbt_die("You are specifying a checkpointing value after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
+ }
+ _surf_mc_checkpoint = xbt_cfg_get_int(_surf_cfg_set, name);
+ xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+void _mc_cfg_cb_property(const char *name, int pos) {
+ if (_surf_init_status && !_surf_do_model_check) {
+ xbt_die("You are specifying a property after the initialization (through MSG_config?), but model-checking was not activated at config time (through --cfg=model-check:1). This won't work, sorry.");
+ }
+ _surf_mc_property_file= xbt_cfg_get_string(_surf_cfg_set, name);
+ xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+
+
/* MC global data structures */
-mc_snapshot_t initial_snapshot = NULL;
-xbt_fifo_t mc_stack = NULL;
-mc_stats_t mc_stats = NULL;
+
mc_state_t mc_current_state = NULL;
char mc_replay_mode = FALSE;
double *mc_time = NULL;
+mc_snapshot_t initial_snapshot = NULL;
+int raw_mem_set;
+
+/* Safety */
+
+xbt_fifo_t mc_stack_safety = NULL;
+mc_stats_t mc_stats = NULL;
+
+/* Liveness */
+
+mc_stats_pair_t mc_stats_pair = NULL;
+xbt_fifo_t mc_stack_liveness = NULL;
+mc_snapshot_t initial_snapshot_liveness = NULL;
+int compare;
+
+xbt_automaton_t _mc_property_automaton = NULL;
+
+static void MC_assert_pair(int prop);
+
+void MC_do_the_modelcheck_for_real() {
+ if (!_surf_mc_property_file || _surf_mc_property_file[0]=='\0') {
+ if (mc_reduce_kind==e_mc_reduce_unset)
+ mc_reduce_kind=e_mc_reduce_dpor;
+
+ XBT_INFO("Check a safety property");
+ MC_modelcheck();
+
+ } else {
+
+ if (mc_reduce_kind==e_mc_reduce_unset)
+ mc_reduce_kind=e_mc_reduce_none;
+
+ XBT_INFO("Check the liveness property %s",_surf_mc_property_file);
+ MC_automaton_load(_surf_mc_property_file);
+ MC_modelcheck_liveness();
+ }
+}
+
/**
* \brief Initialize the model-checker data structures
*/
-void MC_init(void)
+void MC_init_safety(void)
{
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
/* Check if MC is already initialized */
if (initial_snapshot)
return;
/* Initialize the data structures that must be persistent across every
iteration of the model-checker (in RAW memory) */
+
MC_SET_RAW_MEM;
/* Initialize statistics */
mc_stats->state_size = 1;
/* Create exploration stack */
- mc_stack = xbt_fifo_new();
+ mc_stack_safety = xbt_fifo_new();
MC_UNSET_RAW_MEM;
initial_snapshot = xbt_new0(s_mc_snapshot_t, 1);
MC_take_snapshot(initial_snapshot);
MC_UNSET_RAW_MEM;
+
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+}
+
+void MC_compare(void){
+ compare = 1;
}
+
void MC_modelcheck(void)
{
- MC_init();
+ MC_init_safety();
MC_dpor();
MC_exit();
}
+void MC_modelcheck_liveness(){
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ /* init stuff */
+ XBT_DEBUG("Start init mc");
+
+ mc_time = xbt_new0(double, simix_process_maxpid);
+
+ compare = 0;
+
+ /* Initialize the data structures that must be persistent across every
+ iteration of the model-checker (in RAW memory) */
+
+ MC_SET_RAW_MEM;
+
+ /* Initialize statistics */
+ mc_stats_pair = xbt_new0(s_mc_stats_pair_t, 1);
+
+ XBT_DEBUG("Creating stack");
+
+ /* Create exploration stack */
+ mc_stack_liveness = xbt_fifo_new();
+
+ MC_UNSET_RAW_MEM;
+
+
+ MC_ddfs_init();
+
+ /* We're done */
+ MC_print_statistics_pairs(mc_stats_pair);
+ xbt_free(mc_time);
+ MC_memory_exit();
+ exit(0);
+}
+
+
void MC_exit(void)
{
MC_print_statistics(mc_stats);
MC_memory_exit();
}
+
int MC_random(int min, int max)
{
/*FIXME: return mc_current_state->executed_transition->random.value;*/
*/
void MC_wait_for_requests(void)
{
- smx_req_t req = NULL;
-
- do {
- SIMIX_context_runall(simix_global->process_to_run);
- while((req = SIMIX_request_pop())){
- if(!MC_request_is_visible(req))
- SIMIX_request_pre(req, 0);
+ smx_process_t process;
+ smx_simcall_t req;
+ unsigned int iter;
+
+ while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
+ SIMIX_process_runall();
+ xbt_dynar_foreach(simix_global->process_that_ran, iter, process) {
+ req = &process->simcall;
+ if (req->call != SIMCALL_NONE && !MC_request_is_visible(req))
+ SIMIX_simcall_pre(req, 0);
}
- } while (xbt_dynar_length(simix_global->process_to_run));
+ }
}
int MC_deadlock_check()
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
- && MC_request_is_enabled(&process->request)){
+ if(process->simcall.call != SIMCALL_NONE
+ && MC_request_is_enabled(&process->simcall)){
deadlock = FALSE;
break;
}
}
/**
- * \brief Re-executes from the initial state all the transitions indicated by
+ * \brief Re-executes from the state at position start all the transitions indicated by
* a given model-checker stack.
* \param stack The stack with the transitions to execute.
-*/
-void MC_replay(xbt_fifo_t stack)
+ * \param start Start index to begin the re-execution.
+ */
+void MC_replay(xbt_fifo_t stack, int start)
{
- int value;
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ int value, i = 1;
char *req_str;
- smx_req_t req = NULL, saved_req = NULL;
- xbt_fifo_item_t item;
+ smx_simcall_t req = NULL, saved_req = NULL;
+ xbt_fifo_item_t item, start_item;
mc_state_t state;
- DEBUG0("**** Begin Replay ****");
+ XBT_DEBUG("**** Begin Replay ****");
- /* 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;
+ if(start == -1){
+ /* 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);
+ start_item = xbt_fifo_get_last_item(stack);
+ if(start != -1){
+ while (i != start){
+ start_item = xbt_fifo_get_prev_item(start_item);
+ i++;
+ }
+ }
+
+ /* Traverse the stack from the state at position start and re-execute the transitions */
+ for (item = start_item;
item != xbt_fifo_get_first_item(stack);
item = xbt_fifo_get_prev_item(item)) {
if(saved_req){
/* because we got a copy of the executed request, we have to fetch the
real one, pointed by the request field of the issuer process */
- req = &saved_req->issuer->request;
+ req = &saved_req->issuer->simcall;
/* Debug information */
if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
req_str = MC_request_to_string(req, value);
- DEBUG2("Replay: %s (%p)", req_str, state);
+ XBT_DEBUG("Replay: %s (%p)", req_str, state);
xbt_free(req_str);
}
}
- SIMIX_request_pre(req, value);
+ SIMIX_simcall_pre(req, value);
MC_wait_for_requests();
/* Update statistics */
mc_stats->visited_states++;
mc_stats->executed_transitions++;
}
- DEBUG0("**** End Replay ****");
+ XBT_DEBUG("**** End Replay ****");
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+
+}
+
+void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
+{
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ int value;
+ char *req_str;
+ smx_simcall_t req = NULL, saved_req = NULL;
+ xbt_fifo_item_t item;
+ mc_state_t state;
+ mc_pair_stateless_t pair;
+ int depth = 1;
+
+ XBT_DEBUG("**** Begin Replay ****");
+
+ /* Restore the initial state */
+ MC_restore_snapshot(initial_snapshot_liveness);
+ /* 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;
+
+ if(all_stack){
+
+ item = xbt_fifo_get_last_item(stack);
+
+ while(depth <= xbt_fifo_size(stack)){
+
+ pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
+ state = (mc_state_t) pair->graph_state;
+
+ if(pair->requests > 0){
+
+ saved_req = MC_state_get_executed_request(state, &value);
+ //XBT_DEBUG("SavedReq->call %u", saved_req->call);
+
+ if(saved_req != NULL){
+ /* because we got a copy of the executed request, we have to fetch the
+ real one, pointed by the request field of the issuer process */
+ req = &saved_req->issuer->simcall;
+ //XBT_DEBUG("Req->call %u", req->call);
+
+ /* Debug information */
+ if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
+ req_str = MC_request_to_string(req, value);
+ XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
+ xbt_free(req_str);
+ }
+
+ }
+
+ SIMIX_simcall_pre(req, value);
+ MC_wait_for_requests();
+ }
+
+ depth++;
+
+ /* Update statistics */
+ mc_stats_pair->visited_pairs++;
+
+ item = xbt_fifo_get_prev_item(item);
+ }
+
+ }else{
+
+ /* Traverse the stack from the initial state and re-execute the transitions */
+ for (item = xbt_fifo_get_last_item(stack);
+ item != xbt_fifo_get_first_item(stack);
+ item = xbt_fifo_get_prev_item(item)) {
+
+ pair = (mc_pair_stateless_t) xbt_fifo_get_item_content(item);
+ state = (mc_state_t) pair->graph_state;
+
+ if(pair->requests > 0){
+
+ saved_req = MC_state_get_executed_request(state, &value);
+ //XBT_DEBUG("SavedReq->call %u", saved_req->call);
+
+ if(saved_req != NULL){
+ /* because we got a copy of the executed request, we have to fetch the
+ real one, pointed by the request field of the issuer process */
+ req = &saved_req->issuer->simcall;
+ //XBT_DEBUG("Req->call %u", req->call);
+
+ /* Debug information */
+ if(XBT_LOG_ISENABLED(mc_global, xbt_log_priority_debug)){
+ req_str = MC_request_to_string(req, value);
+ XBT_DEBUG("Replay (depth = %d) : %s (%p)", depth, req_str, state);
+ xbt_free(req_str);
+ }
+
+ }
+
+ SIMIX_simcall_pre(req, value);
+ MC_wait_for_requests();
+ }
+
+ depth++;
+
+ /* Update statistics */
+ mc_stats_pair->visited_pairs++;
+ }
+ }
+
+ XBT_DEBUG("**** End Replay ****");
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
/**
* \brief Dumps the contents of a model-checker's stack and shows the actual
* execution trace
* \param stack The stack to dump
-*/
-void MC_dump_stack(xbt_fifo_t stack)
+ */
+void MC_dump_stack_safety(xbt_fifo_t stack)
{
- mc_state_t state;
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
- MC_show_stack(stack);
+ MC_show_stack_safety(stack);
- MC_SET_RAW_MEM;
- while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
- MC_state_delete(state);
- MC_UNSET_RAW_MEM;
+ if(!_surf_mc_checkpoint){
+
+ mc_state_t state;
+
+ MC_SET_RAW_MEM;
+ while ((state = (mc_state_t) xbt_fifo_pop(stack)) != NULL)
+ MC_state_delete(state);
+ MC_UNSET_RAW_MEM;
+
+ }
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
}
-void MC_show_stack(xbt_fifo_t stack)
+
+void MC_show_stack_safety(xbt_fifo_t stack)
{
int value;
mc_state_t state;
xbt_fifo_item_t item;
- smx_req_t req;
+ smx_simcall_t req;
char *req_str = NULL;
for (item = xbt_fifo_get_last_item(stack);
req = MC_state_get_executed_request(state, &value);
if(req){
req_str = MC_request_to_string(req, value);
- INFO1("%s", req_str);
+ XBT_INFO("%s", req_str);
xbt_free(req_str);
}
}
}
-void MC_show_deadlock(smx_req_t req)
+void MC_show_deadlock(smx_simcall_t req)
{
/*char *req_str = NULL;*/
- INFO0("**************************");
- INFO0("*** DEAD-LOCK DETECTED ***");
- INFO0("**************************");
- INFO0("Locked request:");
+ XBT_INFO("**************************");
+ XBT_INFO("*** DEAD-LOCK DETECTED ***");
+ XBT_INFO("**************************");
+ XBT_INFO("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);
+ XBT_INFO("%s", req_str);
+ xbt_free(req_str);*/
+ XBT_INFO("Counter-example execution trace:");
+ MC_dump_stack_safety(mc_stack_safety);
+}
+
+
+void MC_show_stack_liveness(xbt_fifo_t stack){
+ int value;
+ mc_pair_stateless_t pair;
+ xbt_fifo_item_t item;
+ smx_simcall_t req;
+ char *req_str = NULL;
+
+ for (item = xbt_fifo_get_last_item(stack);
+ (item ? (pair = (mc_pair_stateless_t) (xbt_fifo_get_item_content(item)))
+ : (NULL)); item = xbt_fifo_get_prev_item(item)) {
+ req = MC_state_get_executed_request(pair->graph_state, &value);
+ if(req){
+ if(pair->requests>0){
+ req_str = MC_request_to_string(req, value);
+ XBT_INFO("%s", req_str);
+ xbt_free(req_str);
+ }else{
+ XBT_INFO("End of system requests but evolution in Büchi automaton");
+ }
+ }
+ }
}
+void MC_dump_stack_liveness(xbt_fifo_t stack){
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ mc_pair_stateless_t pair;
+
+ MC_SET_RAW_MEM;
+ while ((pair = (mc_pair_stateless_t) xbt_fifo_pop(stack)) != NULL)
+ MC_pair_stateless_delete(pair);
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+}
+
+
void MC_print_statistics(mc_stats_t stats)
{
- INFO1("State space size ~= %lu", stats->state_size);
- INFO1("Expanded states = %lu", stats->expanded_states);
- INFO1("Visited states = %lu", stats->visited_states);
- INFO1("Executed transitions = %lu", stats->executed_transitions);
- INFO1("Expanded / Visited = %lf",
- (double) stats->visited_states / stats->expanded_states);
- /*INFO1("Exploration coverage = %lf",
- (double)stats->expanded_states / stats->state_size); */
+ //XBT_INFO("State space size ~= %lu", stats->state_size);
+ XBT_INFO("Expanded states = %lu", stats->expanded_states);
+ XBT_INFO("Visited states = %lu", stats->visited_states);
+ XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
+ XBT_INFO("Expanded / Visited = %lf",
+ (double) stats->visited_states / stats->expanded_states);
+ /*XBT_INFO("Exploration coverage = %lf",
+ (double)stats->expanded_states / stats->state_size); */
+}
+
+void MC_print_statistics_pairs(mc_stats_pair_t stats)
+{
+ XBT_INFO("Expanded pairs = %lu", stats->expanded_pairs);
+ XBT_INFO("Visited pairs = %lu", stats->visited_pairs);
+ //XBT_INFO("Executed transitions = %lu", stats->executed_transitions);
+ XBT_INFO("Expanded / Visited = %lf",
+ (double) stats->visited_pairs / stats->expanded_pairs);
+ /*XBT_INFO("Exploration coverage = %lf",
+ (double)stats->expanded_states / stats->state_size); */
}
void MC_assert(int prop)
{
- if (MC_IS_ENABLED && !prop) {
- INFO0("**************************");
- INFO0("*** PROPERTY NOT VALID ***");
- INFO0("**************************");
- INFO0("Counter-example execution trace:");
- MC_dump_stack(mc_stack);
+ if (MC_IS_ENABLED && !prop){
+ XBT_INFO("**************************");
+ XBT_INFO("*** PROPERTY NOT VALID ***");
+ XBT_INFO("**************************");
+ XBT_INFO("Counter-example execution trace:");
+ MC_dump_stack_safety(mc_stack_safety);
MC_print_statistics(mc_stats);
xbt_abort();
}
}
+static void MC_assert_pair(int prop){
+ if (MC_IS_ENABLED && !prop) {
+ XBT_INFO("**************************");
+ XBT_INFO("*** PROPERTY NOT VALID ***");
+ XBT_INFO("**************************");
+ //XBT_INFO("Counter-example execution trace:");
+ MC_show_stack_liveness(mc_stack_liveness);
+ //MC_dump_snapshot_stack(mc_snapshot_stack);
+ MC_print_statistics_pairs(mc_stats_pair);
+ xbt_abort();
+ }
+}
+
void MC_process_clock_add(smx_process_t process, double amount)
{
mc_time[process->pid] += amount;
else
return 0;
}
+
+void MC_diff(void){
+
+ mc_snapshot_t sn = xbt_new0(s_mc_snapshot_t, 1);
+ MC_take_snapshot_liveness(sn);
+
+ int i;
+
+ XBT_INFO("Number of regions : %u", sn->num_reg);
+
+ for(i=0; i<sn->num_reg; i++){
+
+ switch(sn->regions[i]->type){
+ case 0: /* heap */
+ XBT_INFO("Size of heap : %zu", sn->regions[i]->size);
+ break;
+ case 1 : /* libsimgrid */
+ XBT_INFO("Size of libsimgrid : %zu", sn->regions[i]->size);
+ break;
+ case 2 : /* data program */
+ XBT_INFO("Size of data program : %zu", sn->regions[i]->size);
+ break;
+ case 3 : /* stack */
+ XBT_INFO("Size of stack : %zu", sn->regions[i]->size);
+ XBT_INFO("Start addr of stack : %p", sn->regions[i]->start_addr);
+ break;
+ }
+
+ }
+
+}
+
+void MC_automaton_load(const char *file){
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ MC_SET_RAW_MEM;
+
+ if (_mc_property_automaton == NULL)
+ _mc_property_automaton = xbt_automaton_new();
+
+ xbt_automaton_load(_mc_property_automaton,file);
+
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+}
+
+void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
+
+ raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+ MC_SET_RAW_MEM;
+
+ if (_mc_property_automaton == NULL)
+ _mc_property_automaton = xbt_automaton_new();
+
+ xbt_new_propositional_symbol(_mc_property_automaton,id,fct);
+
+ MC_UNSET_RAW_MEM;
+
+ if(raw_mem_set)
+ MC_SET_RAW_MEM;
+ else
+ MC_UNSET_RAW_MEM;
+
+}
