X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/0275d08cbb6554fc92eff095847ea32f049e37e9..7526c37879613289a86be06ec264b1cce5ef4049:/src/mc/mc_global.c

diff --git a/src/mc/mc_global.c b/src/mc/mc_global.c
index 9c56d814d7..02f152660b 100644
--- a/src/mc/mc_global.c
+++ b/src/mc/mc_global.c
@@ -55,32 +55,57 @@ void _mc_cfg_cb_property(const char *name, int pos) {
   xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
 }
 
+void _mc_cfg_cb_timeout(const char *name, int pos) {
+  if (_surf_init_status && !_surf_do_model_check) {
+    xbt_die("You are specifying a value to enable/disable timeout for wait requests 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_timeout= xbt_cfg_get_int(_surf_cfg_set, name);
+  xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+
+void _mc_cfg_cb_max_depth(const char *name, int pos) {
+  if (_surf_init_status && !_surf_do_model_check) {
+    xbt_die("You are specifying a max depth 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_max_depth= xbt_cfg_get_int(_surf_cfg_set, name);
+  xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+
+void _mc_cfg_cb_stateful(const char *name, int pos) {
+  if (_surf_init_status && !_surf_do_model_check) {
+    xbt_die("You are trying to change stateful mode 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_stateful= xbt_cfg_get_int(_surf_cfg_set, name);
+  xbt_cfg_set_int(_surf_cfg_set,"model-check",1);
+}
+
 
 /* MC global data structures */
 
 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;
+mc_global_t initial_state_safety = NULL;
 
 /* Liveness */
 
 mc_stats_pair_t mc_stats_pair = NULL;
 xbt_fifo_t mc_stack_liveness = NULL;
-mc_snapshot_t initial_snapshot_liveness = NULL;
+mc_global_t initial_state_liveness = NULL;
 int compare;
 
 /* Local */
 xbt_dict_t mc_local_variables = NULL;
 
 /* Ignore mechanism */
-extern xbt_dynar_t mc_comparison_ignore;
+xbt_dynar_t mc_stack_comparison_ignore;
+xbt_dynar_t mc_data_bss_comparison_ignore;
+extern xbt_dynar_t mc_heap_comparison_ignore;
 extern xbt_dynar_t stacks_areas;
 
 xbt_automaton_t _mc_property_automaton = NULL;
@@ -97,7 +122,7 @@ void MC_do_the_modelcheck_for_real() {
       mc_reduce_kind=e_mc_reduce_dpor;
 
     XBT_INFO("Check a safety property");
-    MC_modelcheck();
+    MC_modelcheck_safety();
 
   } else  {
 
@@ -110,69 +135,21 @@ void MC_do_the_modelcheck_for_real() {
   }
 }
 
-/**
- *  \brief Initialize the model-checker data structures
- */
-void MC_init_safety(void)
-{
-
-  raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
-
-  /* Check if MC is already initialized */
-  if (initial_snapshot)
-    return;
-
-  mc_time = xbt_new0(double, simix_process_maxpid);
-
-  /* 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 = xbt_new0(s_mc_stats_t, 1);
-  mc_stats->state_size = 1;
-
-  /* Create exploration stack */
-  mc_stack_safety = xbt_fifo_new();
-
-  MC_UNSET_RAW_MEM;
-
-  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);
-  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_init(){
 
-void MC_modelcheck(void)
-{
-  MC_init_safety();
-  MC_dpor();
-  MC_exit();
-}
-
-void MC_init_liveness(){
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
   
   mc_time = xbt_new0(double, simix_process_maxpid);
 
   /* mc_time refers to clock for each process -> ignore it for heap comparison */
   int i;
   for(i = 0; i<simix_process_maxpid; i++)
-    MC_ignore(&(mc_time[i]), sizeof(double));
+    MC_ignore_heap(&(mc_time[i]), sizeof(double));
   
   compare = 0;
 
@@ -201,24 +178,86 @@ void MC_init_liveness(){
   get_libsimgrid_plt_section();
   get_binary_plt_section();
 
+   /* Ignore some variables from xbt/ex.h used by exception e for stacks comparison */
+  MC_ignore_stack("e", "*");
+  MC_ignore_stack("__ex_cleanup", "*");
+  MC_ignore_stack("__ex_mctx_en", "*");
+  MC_ignore_stack("__ex_mctx_me", "*");
+  MC_ignore_stack("_log_ev", "*");
+  MC_ignore_stack("_throw_ctx", "*");
+  MC_ignore_stack("ctx", "*");
+
+
+  if(raw_mem_set)
+    MC_SET_RAW_MEM;
+
+}
+
+void MC_modelcheck_safety(void)
+{
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+  /* Check if MC is already initialized */
+  if (initial_state_safety)
+    return;
+
+  mc_time = xbt_new0(double, simix_process_maxpid);
+
+  /* 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 = xbt_new0(s_mc_stats_t, 1);
+  mc_stats->state_size = 1;
+
+  /* Create exploration stack */
+  mc_stack_safety = xbt_fifo_new();
+
+  MC_UNSET_RAW_MEM;
+
+  if(_surf_mc_stateful > 0){
+    MC_init();
+  }else{
+    MC_init_memory_map_info();
+    get_libsimgrid_plt_section();
+    get_binary_plt_section();
+  }
+
+  MC_dpor_init();
+
+  MC_SET_RAW_MEM;
+  /* Save the initial state */
+  initial_state_safety = xbt_new0(s_mc_global_t, 1);
+  initial_state_safety->snapshot = MC_take_snapshot();
+  //MC_take_snapshot(initial_snapshot);
+  MC_UNSET_RAW_MEM;
+
+  if(raw_mem_set)
+    MC_SET_RAW_MEM;
+
+  MC_dpor();
+
+  MC_exit();
 }
 
 void MC_modelcheck_liveness(){
 
-  raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
 
-  MC_init_liveness();
+  MC_init();
  
   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();
 
+  initial_state_liveness = xbt_new0(s_mc_global_t, 1);
+
   MC_UNSET_RAW_MEM;
 
   MC_ddfs_init();
@@ -226,8 +265,10 @@ void MC_modelcheck_liveness(){
   /* We're done */
   MC_print_statistics_pairs(mc_stats_pair);
   xbt_free(mc_time);
-  MC_memory_exit();
-  exit(0);
+
+  if(raw_mem_set)
+    MC_SET_RAW_MEM;
+
 }
 
 
@@ -289,7 +330,7 @@ int MC_deadlock_check()
  */
 void MC_replay(xbt_fifo_t stack, int start)
 {
-  raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+  int raw_mem = (mmalloc_get_current_heap() == raw_heap);
 
   int value, i = 1;
   char *req_str;
@@ -301,7 +342,7 @@ void MC_replay(xbt_fifo_t stack, int start)
 
   if(start == -1){
     /* Restore the initial state */
-    MC_restore_snapshot(initial_snapshot);
+    MC_restore_snapshot(initial_state_safety->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;
@@ -345,7 +386,7 @@ void MC_replay(xbt_fifo_t stack, int start)
   }
   XBT_DEBUG("**** End Replay ****");
 
-  if(raw_mem_set)
+  if(raw_mem)
     MC_SET_RAW_MEM;
   else
     MC_UNSET_RAW_MEM;
@@ -356,7 +397,7 @@ void MC_replay(xbt_fifo_t stack, int start)
 void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
 {
 
-  raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+  initial_state_liveness->raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
 
   int value;
   char *req_str;
@@ -369,10 +410,12 @@ void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
   XBT_DEBUG("**** Begin Replay ****");
 
   /* Restore the initial state */
-  MC_restore_snapshot(initial_snapshot_liveness);
+  MC_restore_snapshot(initial_state_liveness->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(!initial_state_liveness->raw_mem_set)
+    MC_UNSET_RAW_MEM;
 
   if(all_stack){
 
@@ -458,7 +501,7 @@ void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
 
   XBT_DEBUG("**** End Replay ****");
 
-  if(raw_mem_set)
+  if(initial_state_liveness->raw_mem_set)
     MC_SET_RAW_MEM;
   else
     MC_UNSET_RAW_MEM;
@@ -473,7 +516,7 @@ void MC_replay_liveness(xbt_fifo_t stack, int all_stack)
 void MC_dump_stack_safety(xbt_fifo_t stack)
 {
   
-  raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
 
   MC_show_stack_safety(stack);
 
@@ -556,7 +599,7 @@ void MC_show_stack_liveness(xbt_fifo_t stack){
 
 void MC_dump_stack_liveness(xbt_fifo_t stack){
 
-  raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
 
   mc_pair_stateless_t pair;
 
@@ -567,8 +610,6 @@ void MC_dump_stack_liveness(xbt_fifo_t stack){
 
   if(raw_mem_set)
     MC_SET_RAW_MEM;
-  else
-    MC_UNSET_RAW_MEM;
 
 }
 
@@ -592,8 +633,9 @@ void MC_print_statistics_pairs(mc_stats_pair_t stats)
   //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); */
+
+  if(mmalloc_get_current_heap() == raw_heap)
+    MC_UNSET_RAW_MEM;
 }
 
 void MC_assert(int prop)
@@ -629,15 +671,19 @@ void MC_process_clock_add(smx_process_t process, double amount)
 
 double MC_process_clock_get(smx_process_t process)
 {
-  if(mc_time)
-    return mc_time[process->pid];
-  else
+  if(mc_time){
+    if(process != NULL)
+      return mc_time[process->pid];
+    else 
+      return -1;
+  }else{
     return 0;
+  }
 }
 
 void MC_automaton_load(const char *file){
 
-  raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
 
   MC_SET_RAW_MEM;
 
@@ -650,14 +696,12 @@ void MC_automaton_load(const char *file){
 
   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);
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
 
   MC_SET_RAW_MEM;
 
@@ -670,22 +714,22 @@ void MC_automaton_new_propositional_symbol(const char* id, void* fct) {
 
   if(raw_mem_set)
     MC_SET_RAW_MEM;
-  else
-    MC_UNSET_RAW_MEM;
   
 }
 
 /************ MC_ignore ***********/ 
 
-void MC_ignore(void *address, size_t size){
+void MC_ignore_heap(void *address, size_t size){
+
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
 
   MC_SET_RAW_MEM;
   
-  if(mc_comparison_ignore == NULL)
-    mc_comparison_ignore = xbt_dynar_new(sizeof(mc_ignore_region_t), NULL);
+  if(mc_heap_comparison_ignore == NULL)
+    mc_heap_comparison_ignore = xbt_dynar_new(sizeof(mc_heap_ignore_region_t), NULL);
 
-  mc_ignore_region_t region = NULL;
-  region = xbt_new0(s_mc_ignore_region_t, 1);
+  mc_heap_ignore_region_t region = NULL;
+  region = xbt_new0(s_mc_heap_ignore_region_t, 1);
   region->address = address;
   region->size = size;
 
@@ -702,21 +746,148 @@ void MC_ignore(void *address, size_t size){
   }
 
   unsigned int cursor = 0;
-  mc_ignore_region_t current_region;
-  xbt_dynar_foreach(mc_comparison_ignore, cursor, current_region){
+  mc_heap_ignore_region_t current_region;
+  xbt_dynar_foreach(mc_heap_comparison_ignore, cursor, current_region){
     if(current_region->address > address)
       break;
   }
 
-  xbt_dynar_insert_at(mc_comparison_ignore, cursor, &region);
+  xbt_dynar_insert_at(mc_heap_comparison_ignore, cursor, &region);
+
+  MC_UNSET_RAW_MEM;
+
+  if(raw_mem_set)
+    MC_SET_RAW_MEM;
+}
+
+void MC_ignore_data_bss(void *address, size_t size){
+
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+  MC_SET_RAW_MEM;
+  
+  if(mc_data_bss_comparison_ignore == NULL)
+    mc_data_bss_comparison_ignore = xbt_dynar_new(sizeof(mc_data_bss_ignore_variable_t), NULL);
+
+  if(xbt_dynar_is_empty(mc_data_bss_comparison_ignore)){
+
+    mc_data_bss_ignore_variable_t var = NULL;
+    var = xbt_new0(s_mc_data_bss_ignore_variable_t, 1);
+    var->address = address;
+    var->size = size;
+
+    xbt_dynar_insert_at(mc_data_bss_comparison_ignore, 0, &var);
+
+  }else{
+    
+    unsigned int cursor = 0;
+    int start = 0;
+    int end = xbt_dynar_length(mc_data_bss_comparison_ignore) - 1;
+    mc_data_bss_ignore_variable_t current_var = NULL;
+
+    while(start <= end){
+      cursor = (start + end) / 2;
+      current_var = (mc_data_bss_ignore_variable_t)xbt_dynar_get_as(mc_data_bss_comparison_ignore, cursor, mc_data_bss_ignore_variable_t);
+      if(current_var->address == address){
+        MC_UNSET_RAW_MEM;
+        if(raw_mem_set)
+          MC_SET_RAW_MEM;
+        return;
+      }
+      if(current_var->address < address)
+        start = cursor + 1;
+      if(current_var->address > address)
+        end = cursor - 1;
+    }
+ 
+    mc_data_bss_ignore_variable_t var = NULL;
+    var = xbt_new0(s_mc_data_bss_ignore_variable_t, 1);
+    var->address = address;
+    var->size = size;
+
+    if(current_var->address > address)
+      xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor + 1, &var);
+    else
+      xbt_dynar_insert_at(mc_data_bss_comparison_ignore, cursor, &var);
+
+  }
 
   MC_UNSET_RAW_MEM;
+
+  if(raw_mem_set)
+    MC_SET_RAW_MEM;
 }
 
-void MC_new_stack_area(void *stack, char *name, void* context){
+void MC_ignore_stack(const char *var_name, const char *frame){
+  
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
 
   MC_SET_RAW_MEM;
 
+  if(mc_stack_comparison_ignore == NULL)
+    mc_stack_comparison_ignore = xbt_dynar_new(sizeof(mc_stack_ignore_variable_t), NULL);
+
+  if(xbt_dynar_is_empty(mc_stack_comparison_ignore)){
+
+    mc_stack_ignore_variable_t var = NULL;
+    var = xbt_new0(s_mc_stack_ignore_variable_t, 1);
+    var->var_name = strdup(var_name);
+    var->frame = strdup(frame);
+
+    xbt_dynar_insert_at(mc_stack_comparison_ignore, 0, &var);
+
+  }else{
+    
+    unsigned int cursor = 0;
+    int start = 0;
+    int end = xbt_dynar_length(mc_stack_comparison_ignore) - 1;
+    mc_stack_ignore_variable_t current_var = NULL;
+
+    while(start <= end){
+      cursor = (start + end) / 2;
+      current_var = (mc_stack_ignore_variable_t)xbt_dynar_get_as(mc_stack_comparison_ignore, cursor, mc_stack_ignore_variable_t);
+      if(strcmp(current_var->frame, frame) == 0){
+        if(strcmp(current_var->var_name, var_name) == 0){
+          MC_UNSET_RAW_MEM;
+          if(raw_mem_set)
+            MC_SET_RAW_MEM;
+          return;
+        }
+        if(strcmp(current_var->var_name, var_name) < 0)
+          start = cursor + 1;
+        if(strcmp(current_var->var_name, var_name) > 0)
+          end = cursor - 1;
+      }
+      if(strcmp(current_var->frame, frame) < 0)
+        start = cursor + 1;
+      if(strcmp(current_var->frame, frame) > 0)
+        end = cursor - 1;
+    }
+
+    mc_stack_ignore_variable_t var = NULL;
+    var = xbt_new0(s_mc_stack_ignore_variable_t, 1);
+    var->var_name = strdup(var_name);
+    var->frame = strdup(frame);
+
+    if(strcmp(current_var->frame, frame) < 0)
+      xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor + 1, &var);
+    else
+      xbt_dynar_insert_at(mc_stack_comparison_ignore, cursor, &var);
+
+  }
+
+  MC_UNSET_RAW_MEM;
+  
+  if(raw_mem_set)
+    MC_SET_RAW_MEM;
+
+}
+
+void MC_new_stack_area(void *stack, char *name, void* context, size_t size){
+
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+  MC_SET_RAW_MEM;
   if(stacks_areas == NULL)
     stacks_areas = xbt_dynar_new(sizeof(stack_region_t), NULL);
   
@@ -725,9 +896,13 @@ void MC_new_stack_area(void *stack, char *name, void* context){
   region->address = stack;
   region->process_name = strdup(name);
   region->context = context;
+  region->size = size;
   xbt_dynar_push(stacks_areas, &region);
   
   MC_UNSET_RAW_MEM;
+
+  if(raw_mem_set)
+    MC_SET_RAW_MEM;
 }
 
 /************ DWARF ***********/
@@ -1278,7 +1453,7 @@ static dw_location_t get_location(xbt_dict_t location_list, char *expr){
         dw_location_t new_element = xbt_new0(s_dw_location_t, 1);
         new_element->type = e_dw_bregister_op;
         new_element->location.breg_op.reg = atoi(strtok(tok2, "DW_OP_breg"));
-        new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens2, 2, char*));
+        new_element->location.breg_op.offset = atoi(xbt_dynar_get_as(tokens2, 1, char*));
         xbt_dynar_push(loc->location.compose, &new_element);
       }else if(strncmp(tok2, "DW_OP_lit", 9) == 0){
         dw_location_t new_element = xbt_new0(s_dw_location_t, 1);