X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/0144cea50dd27aaef619a851cbebd0fe7363fb9d..c4ba80fc01212c53971f8bad7d34aa399669bcc6:/src/surf/maxmin.c

diff --git a/src/surf/maxmin.c b/src/surf/maxmin.c
index db76f87db8..de1750b7e8 100644
--- a/src/surf/maxmin.c
+++ b/src/surf/maxmin.c
@@ -227,7 +227,8 @@ lmm_variable_t lmm_variable_new(lmm_system_t sys, void *id,
     xbt_swag_insert_at_head(var, &(sys->variable_set));
   else
     xbt_swag_insert_at_tail(var, &(sys->variable_set));
-  XBT_OUT();
+
+  XBT_OUT(" returns %p", var);
   return var;
 }
 
@@ -320,6 +321,16 @@ XBT_INLINE lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
     return NULL;
 }
 
+XBT_INLINE double lmm_get_cnst_weight_from_var(lmm_system_t sys,
+                                                         lmm_variable_t var,
+                                                         int num)
+{
+  if (num < var->cnsts_number)
+    return (var->cnsts[num].value);
+  else
+    return 0.0;
+}
+
 XBT_INLINE int lmm_get_number_of_cnst_from_var(lmm_system_t sys,
                                                lmm_variable_t var)
 {
@@ -350,36 +361,31 @@ XBT_INLINE void *lmm_variable_id(lmm_variable_t var)
   return var->id;
 }
 
-static XBT_INLINE void saturated_constraint_set_update(lmm_system_t sys,
-                                                       lmm_constraint_t
-                                                       cnst,
-                                                       double *min_usage)
+static XBT_INLINE int saturated_constraint_set_update(lmm_system_t sys,
+                                                      lmm_constraint_t
+                                                      cnst,
+                                                      double *min_usage)
 {
-  lmm_constraint_t useless_cnst = NULL;
-
   XBT_IN("sys=%p, cnst=%p, min_usage=%f", sys, cnst, *min_usage);
   if (cnst->usage <= 0) {
     XBT_OUT();
-    return;
+    return 1;
   }
   if (cnst->remaining <= 0) {
     XBT_OUT();
-    return;
+    return 1;
   }
   if ((*min_usage < 0) || (*min_usage > cnst->remaining / cnst->usage)) {
     *min_usage = cnst->remaining / cnst->usage;
-    XBT_LOG(xbt_log_priority_trace,
-         "min_usage=%f (cnst->remaining=%f, cnst->usage=%f)", *min_usage,
-         cnst->remaining, cnst->usage);
-    while ((useless_cnst =
-            xbt_swag_getFirst(&(sys->saturated_constraint_set))))
-      xbt_swag_remove(useless_cnst, &(sys->saturated_constraint_set));
-
-    xbt_swag_insert(cnst, &(sys->saturated_constraint_set));
+    XBT_HERE(" min_usage=%f (cnst->remaining=%f, cnst->usage=%f)",
+             *min_usage, cnst->remaining, cnst->usage);
+    xbt_swag_reset(&sys->saturated_constraint_set);
+    xbt_swag_insert(cnst, &sys->saturated_constraint_set);
   } else if (*min_usage == cnst->remaining / cnst->usage) {
-    xbt_swag_insert(cnst, &(sys->saturated_constraint_set));
+    xbt_swag_insert(cnst, &sys->saturated_constraint_set);
   }
   XBT_OUT();
+  return 0;
 }
 
 static XBT_INLINE void saturated_variable_set_update(lmm_system_t sys)
@@ -500,6 +506,7 @@ void lmm_solve(lmm_system_t sys)
 {
   lmm_variable_t var = NULL;
   lmm_constraint_t cnst = NULL;
+  lmm_constraint_t cnst_next = NULL;
   lmm_element_t elem = NULL;
   xbt_swag_t cnst_list = NULL;
   xbt_swag_t var_list = NULL;
@@ -533,7 +540,7 @@ void lmm_solve(lmm_system_t sys)
     }
   }
 
-  xbt_swag_foreach(cnst, cnst_list) {
+  xbt_swag_foreach_safe(cnst, cnst_next, cnst_list) {
     /* INIT */
     cnst->remaining = cnst->bound;
     if (cnst->remaining == 0)
@@ -557,6 +564,10 @@ void lmm_solve(lmm_system_t sys)
     }
     XBT_DEBUG("Constraint Usage '%d' : %f", cnst->id_int, cnst->usage);
     /* Saturated constraints update */
+    if(cnst->usage>0) {
+      xbt_swag_remove(cnst, cnst_list);
+      xbt_swag_insert_at_head(cnst, cnst_list);
+    }
     saturated_constraint_set_update(sys, cnst, &min_usage);
   }
   saturated_variable_set_update(sys);
@@ -611,6 +622,10 @@ void lmm_solve(lmm_system_t sys)
         if (cnst->shared) {
           double_update(&(cnst->remaining), elem->value * var->value);
           double_update(&(cnst->usage), elem->value / var->weight);
+          if(cnst->usage<=0 || cnst->remaining<=0) {
+            xbt_swag_remove(cnst, cnst_list);
+            xbt_swag_insert_at_tail(cnst, cnst_list);
+          }
           make_elem_inactive(elem);
         } else {                /* FIXME one day: We recompute usage.... :( */
           cnst->usage = 0.0;
@@ -637,8 +652,9 @@ void lmm_solve(lmm_system_t sys)
     /* Find out which variables reach the maximum */
     min_usage = -1;
     min_bound = -1;
+
     xbt_swag_foreach(cnst, cnst_list) {
-      saturated_constraint_set_update(sys, cnst, &min_usage);
+      if(saturated_constraint_set_update(sys, cnst, &min_usage)) break;
     }
     saturated_variable_set_update(sys);