The variable-constraint graph is already traversed, and there is no

[simgrid.git] / src / surf / maxmin.c

diff --git a/src/surf/maxmin.c b/src/surf/maxmin.c
index 0a00e66..d26d581 100644 (file)
--- a/src/surf/maxmin.c
+++ b/src/surf/maxmin.c
@@ -23,12 +23,11 @@ static void lmm_variable_mallocator_free_f(void *var);
 static void lmm_update_modified_set(lmm_system_t sys,
                                     lmm_constraint_t cnst);
 static void lmm_remove_all_modified_set(lmm_system_t sys);
-int sg_maxmin_selective_update = 1;
 static int Global_debug_id = 1;
 static int Global_const_debug_id = 1;
 extern xbt_swag_t keep_track;
 
-lmm_system_t lmm_system_new(void)
+lmm_system_t lmm_system_new(int selective_update)
 {
   lmm_system_t l = NULL;
   s_lmm_variable_t var;
@@ -37,7 +36,7 @@ lmm_system_t lmm_system_new(void)
   l = xbt_new0(s_lmm_system_t, 1);
 
   l->modified = 0;
-  l->selective_update_active = sg_maxmin_selective_update;
+  l->selective_update_active = selective_update;
 
   XBT_DEBUG("Setting selective_update_active flag to %d\n",
          l->selective_update_active);
@@ -87,20 +86,31 @@ void lmm_system_free(lmm_system_t sys)
 XBT_INLINE void lmm_variable_disable(lmm_system_t sys, lmm_variable_t var)
 {
   int i;
+  int n;
+
   lmm_element_t elem = NULL;
 
   XBT_IN("(sys=%p, var=%p)", sys, var);
   sys->modified = 1;
 
+  n = 0;
   for (i = 0; i < var->cnsts_number; i++) {
     elem = &var->cnsts[i];
     xbt_swag_remove(elem, &(elem->constraint->element_set));
     xbt_swag_remove(elem, &(elem->constraint->active_element_set));
     if (!xbt_swag_size(&(elem->constraint->element_set)))
       make_constraint_inactive(sys, elem->constraint);
-    else
-      lmm_update_modified_set(sys, elem->constraint);
+    else {
+      if (n < i)
+        var->cnsts[n].constraint = elem->constraint;
+      n++;
+    }
   }
+  if (n) {
+    var->cnsts_number = n;
+    lmm_update_modified_set(sys, var->cnsts[0].constraint);
+  }
+
   var->cnsts_number = 0;
   XBT_OUT();
 }
@@ -259,6 +269,8 @@ void lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
 
   make_constraint_active(sys, cnst);
   lmm_update_modified_set(sys, cnst);
+  if (var->cnsts_number > 1)
+    lmm_update_modified_set(sys, var->cnsts[0].constraint);
 }
 
 void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
@@ -674,14 +686,11 @@ void lmm_update(lmm_system_t sys, lmm_constraint_t cnst,
 void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
                                double bound)
 {
-  int i;
-
   sys->modified = 1;
   var->bound = bound;
 
-  for (i = 0; i < var->cnsts_number; i++)
-    lmm_update_modified_set(sys, var->cnsts[i].constraint);
-
+  if (var->cnsts_number)
+    lmm_update_modified_set(sys, var->cnsts[0].constraint);
 }
 
 
@@ -709,12 +718,13 @@ void lmm_update_variable_weight(lmm_system_t sys, lmm_variable_t var,
       xbt_swag_insert_at_head(elem, &(elem->constraint->element_set));
     else
       xbt_swag_insert_at_tail(elem, &(elem->constraint->element_set));
-
-    lmm_update_modified_set(sys, elem->constraint);
   }
   if (!weight)
     var->value = 0.0;
 
+  if (var->cnsts_number)
+     lmm_update_modified_set(sys, var->cnsts[0].constraint);
+
   XBT_OUT();
 }