Add/update copyright notices.

[simgrid.git] / src / mc / mc_dpor.c

diff --git a/src/mc/mc_dpor.c b/src/mc/mc_dpor.c
index 4209fac..fb3c120 100644 (file)
--- a/src/mc/mc_dpor.c
+++ b/src/mc/mc_dpor.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008-2013. The SimGrid Team.
+/* Copyright (c) 2008-2014. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -33,7 +33,7 @@ static mc_visited_state_t visited_state_new(){
   new_state = xbt_new0(s_mc_visited_state_t, 1);
   new_state->heap_bytes_used = mmalloc_get_bytes_used(std_heap);
   new_state->nb_processes = xbt_swag_size(simix_global->process_list);
-  new_state->system_state = MC_take_snapshot();
+  new_state->system_state = MC_take_snapshot(mc_stats->expanded_states);
   new_state->num = mc_stats->expanded_states;
   new_state->other_num = -1;
 
@@ -118,13 +118,14 @@ static int is_visited_state(){
   }else{
 
     int min = -1, max = -1, index;
-    int res;
+    //int res;
     mc_visited_state_t state_test;
+    int cursor;
 
     index = get_search_interval(visited_states, new_state, &min, &max);
 
     if(min != -1 && max != -1){
-      res = xbt_parmap_mc_apply(parmap, snapshot_compare, xbt_dynar_get_ptr(visited_states, min), (max-min)+1, new_state);
+      /*res = xbt_parmap_mc_apply(parmap, snapshot_compare, xbt_dynar_get_ptr(visited_states, min), (max-min)+1, new_state);
       if(res != -1){
         state_test = (mc_visited_state_t)xbt_dynar_get_as(visited_states, (min+res)-1, mc_visited_state_t);
         if(state_test->other_num == -1)
@@ -140,7 +141,27 @@ static int is_visited_state(){
         if(!raw_mem_set)
           MC_UNSET_RAW_MEM;
         return new_state->other_num;
-      } 
+        }*/
+      cursor = min;
+      while(cursor <= max){
+        state_test = (mc_visited_state_t)xbt_dynar_get_as(visited_states, cursor, mc_visited_state_t);
+        if(snapshot_compare(state_test, new_state) == 0){
+          if(state_test->other_num == -1)
+            new_state->other_num = state_test->num;
+          else
+            new_state->other_num = state_test->other_num;
+          if(dot_output == NULL)
+            XBT_DEBUG("State %d already visited ! (equal to state %d)", new_state->num, state_test->num);
+          else
+            XBT_DEBUG("State %d already visited ! (equal to state %d (state %d in dot_output))", new_state->num, state_test->num, new_state->other_num);
+          xbt_dynar_remove_at(visited_states, cursor, NULL);
+          xbt_dynar_insert_at(visited_states, cursor, &new_state);
+          if(!raw_mem_set)
+            MC_UNSET_RAW_MEM;
+          return new_state->other_num;
+        }
+        cursor++;
+      }
       xbt_dynar_insert_at(visited_states, min, &new_state);
     }else{
       state_test = (mc_visited_state_t)xbt_dynar_get_as(visited_states, index, mc_visited_state_t);
@@ -203,6 +224,9 @@ void MC_dpor_init()
   /* Wait for requests (schedules processes) */
   MC_wait_for_requests();
 
+  MC_ignore_heap(simix_global->process_to_run->data, 0);
+  MC_ignore_heap(simix_global->process_that_ran->data, 0);
+
   MC_SET_RAW_MEM;
  
   /* Get an enabled process and insert it in the interleave set of the initial state */
@@ -252,6 +276,7 @@ void MC_dpor(void)
   mc_state_t state = NULL, prev_state = NULL, next_state = NULL, restore_state=NULL;
   smx_process_t process = NULL;
   xbt_fifo_item_t item = NULL;
+  mc_state_t state_test = NULL;
   int pos;
   int visited_state = -1;
   int enabled = 0;
@@ -263,9 +288,9 @@ void MC_dpor(void)
       xbt_fifo_get_item_content(xbt_fifo_get_first_item(mc_stack_safety));
 
     XBT_DEBUG("**************************************************");
-    XBT_DEBUG("Exploration depth=%d (state=%p, num %d)(%u interleave, user_max_depth %d)",
+    XBT_DEBUG("Exploration depth=%d (state=%p, num %d)(%u interleave, user_max_depth %d, first_enabled_state size : %d)",
               xbt_fifo_size(mc_stack_safety), state, state->num,
-              MC_state_interleave_size(state), user_max_depth_reached);
+              MC_state_interleave_size(state), user_max_depth_reached, xbt_dict_size(first_enabled_state));
       
     /* Update statistics */
     mc_stats->visited_states++;
@@ -319,7 +344,7 @@ void MC_dpor(void)
         }
 
         if(_sg_mc_checkpoint && ((xbt_fifo_size(mc_stack_safety) + 1) % _sg_mc_checkpoint == 0)){
-          next_state->system_state = MC_take_snapshot();
+          next_state->system_state = MC_take_snapshot(next_state->num);
         }
 
         if(dot_output != NULL)
@@ -371,8 +396,6 @@ void MC_dpor(void)
             char *key = bprintf("%lu", process->pid);
             enabled = (int)strtoul(xbt_dict_get_or_null(first_enabled_state, key), 0, 10);
             xbt_free(key);
-            mc_state_t state_test = NULL;
-            xbt_fifo_item_t item = NULL;
             int cursor = xbt_fifo_size(mc_stack_safety);
             xbt_fifo_foreach(mc_stack_safety, item, state_test, mc_state_t){
               if(cursor-- == enabled){ 
@@ -382,7 +405,7 @@ void MC_dpor(void)
                   break;
                 }
               }
-            } 
+            }
           }
         }
 
@@ -480,7 +503,7 @@ void MC_dpor(void)
             MC_UNSET_RAW_MEM;
             MC_replay(mc_stack_safety, -1);
           }
-          XBT_DEBUG("Back-tracking to state %d at depth %d", state->num, xbt_fifo_size(mc_stack_safety));
+          XBT_DEBUG("Back-tracking to state %d at depth %d done", state->num, xbt_fifo_size(mc_stack_safety));
           break;
         } else {
           XBT_DEBUG("Delete state %d at depth %d", state->num, xbt_fifo_size(mc_stack_safety) + 1);