X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/c54bb11ab9d68e5a581528dfc4c425ff68a8c776..6604439f3437486f84c0e239f28b162662631127:/src/surf/maxmin.c

diff --git a/src/surf/maxmin.c b/src/surf/maxmin.c
index d26f1de265..37ad510d4d 100644
--- a/src/surf/maxmin.c
+++ b/src/surf/maxmin.c
@@ -7,11 +7,11 @@
 
 
 #include "xbt/sysdep.h"
-#include "xbt/error.h"
+#include "xbt/log.h"
 #include "maxmin_private.h"
 #include <stdlib.h>
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(maxmin, surf,
-				"Logging specific to the SURF maxmin module");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_maxmin, surf,
+				"Logging specific to SURF (maxmin)");
 
 lmm_system_t lmm_system_new(void)
 {
@@ -57,6 +57,7 @@ void lmm_variable_disable(lmm_system_t sys, lmm_variable_t var)
   int i;
   lmm_element_t elem = NULL;
 
+  XBT_IN2("(sys=%p, var=%p)",sys,var);
   sys->modified = 1;
 
   for (i = 0; i < var->cnsts_number; i++) {
@@ -67,6 +68,7 @@ void lmm_variable_disable(lmm_system_t sys, lmm_variable_t var)
       make_constraint_inactive(sys, elem->constraint);
   }
   var->cnsts_number = 0;
+  XBT_OUT;
 }
 
 static void lmm_var_free(lmm_system_t sys, lmm_variable_t var)
@@ -124,6 +126,10 @@ lmm_variable_t lmm_variable_new(lmm_system_t sys, void *id,
 {
   lmm_variable_t var = NULL;
   int i;
+
+  XBT_IN5("(sys=%p, id=%p, weight=%f, bound=%f, num_cons =%d)",
+	  sys,id,weight,bound,number_of_constraints);
+
   var = xbt_new0(s_lmm_variable_t, 1);
   var->id = id;
   var->cnsts = xbt_new0(s_lmm_element_t, number_of_constraints);
@@ -146,7 +152,7 @@ lmm_variable_t lmm_variable_new(lmm_system_t sys, void *id,
   var->value = 0.0;
   if(weight) xbt_swag_insert_at_head(var,&(sys->variable_set));
   else xbt_swag_insert_at_tail(var,&(sys->variable_set));
-
+  XBT_OUT;
   return var;
 }
 
@@ -196,6 +202,20 @@ void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
   else lmm_expand(sys,cnst,var,value);
 }
 
+void lmm_elem_set_value(lmm_system_t sys, lmm_constraint_t cnst,
+			lmm_variable_t var, double value)
+{
+  int i ; 
+
+  for(i=0; i< var->cnsts_number ; i++)
+    if(var->cnsts[i].constraint == cnst) break;
+
+  if(i<var->cnsts_number) {
+    var->cnsts[i].value =value;
+    sys->modified = 1;
+  } else DIE_IMPOSSIBLE;
+}
+
 lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
 				       lmm_variable_t var, int num)
 {
@@ -237,13 +257,20 @@ static void saturated_constraint_set_update(lmm_system_t sys,
 {
   lmm_constraint_t useless_cnst = NULL;
 
-  if (cnst->usage <= 0)
+  XBT_IN3("sys=%p, cnst=%p, min_usage=%f",sys,cnst,*min_usage);
+  if (cnst->usage <= 0) {
+    XBT_OUT;
     return;
-  if (cnst->remaining <= 0)
+  }
+  if (cnst->remaining <= 0) {
+    XBT_OUT;
     return;
+  }
   if ((*min_usage < 0) || (*min_usage > cnst->remaining / cnst->usage)) {
     *min_usage = cnst->remaining / cnst->usage;
-
+    LOG3(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));
@@ -252,6 +279,7 @@ static void saturated_constraint_set_update(lmm_system_t sys,
   } else if (*min_usage == cnst->remaining / cnst->usage) {
     xbt_swag_insert(cnst, &(sys->saturated_constraint_set));
   }
+  XBT_OUT;
 }
 
 static void saturated_variable_set_update(lmm_system_t sys)
@@ -271,7 +299,70 @@ static void saturated_variable_set_update(lmm_system_t sys)
     }
     xbt_swag_remove(cnst, cnst_list);
   }
+}
+
+static void lmm_print(lmm_system_t sys)
+{
+  lmm_constraint_t cnst = NULL;
+  lmm_element_t elem = NULL;
+  lmm_variable_t var = NULL;
+  xbt_swag_t cnst_list = NULL;
+  xbt_swag_t var_list = NULL;
+  xbt_swag_t elem_list = NULL;
+  char print_buf[1024];
+  char *trace_buf=xbt_malloc0(sizeof(char));
+  double sum=0.0;
+
+  /* Printing Objective */
+  var_list = &(sys->variable_set);
+  sprintf(print_buf,"MAX-MIN ( ");
+  trace_buf = xbt_realloc(trace_buf,strlen(trace_buf)+strlen(print_buf)+1);
+  strcat(trace_buf, print_buf);
+  xbt_swag_foreach(var, var_list) {
+    sprintf(print_buf,"'%p'(%f) ",var,var->weight);
+    trace_buf = xbt_realloc(trace_buf,strlen(trace_buf)+strlen(print_buf)+1);
+    strcat(trace_buf, print_buf);
+  }
+  sprintf(print_buf,")");
+  trace_buf = xbt_realloc(trace_buf,strlen(trace_buf)+strlen(print_buf)+1);
+  strcat(trace_buf, print_buf);
+  DEBUG1("%s",trace_buf);
+  trace_buf[0]='\000';
+
+  /* Printing Constraints */
+  cnst_list = &(sys->active_constraint_set);
+  xbt_swag_foreach(cnst, cnst_list) {
+    sum=0.0;
+    elem_list = &(cnst->element_set);
+    sprintf(print_buf,"\t");
+    trace_buf = xbt_realloc(trace_buf,strlen(trace_buf)+strlen(print_buf)+1);
+    strcat(trace_buf, print_buf);
+    xbt_swag_foreach(elem, elem_list) {
+      sprintf(print_buf,"%f.'%p'(%f) + ",elem->value, 
+	      elem->variable,elem->variable->weight);
+      trace_buf = xbt_realloc(trace_buf,strlen(trace_buf)+strlen(print_buf)+1);
+      strcat(trace_buf, print_buf);
+      sum += elem->value * elem->variable->value;
+    }
+    sprintf(print_buf,"0 <= %f ('%p')",cnst->bound,cnst);
+    trace_buf = xbt_realloc(trace_buf,strlen(trace_buf)+strlen(print_buf)+1);
+    strcat(trace_buf, print_buf);
+    DEBUG1("%s",trace_buf);
+    trace_buf[0]='\000';
+    xbt_assert0((sum<=cnst->bound), "Incorrect value");
+  }
+
+  /* Printing Result */
+  xbt_swag_foreach(var, var_list) {
+    if(var->bound>0) {
+      DEBUG4("'%p'(%f) : %f (<=%f)",var,var->weight,var->value, var->bound);
+      xbt_assert0((var->value<=var->bound), "Incorrect value");
+    }
+    else 
+      DEBUG3("'%p'(%f) : %f",var,var->weight,var->value);
+  }
 
+  free(trace_buf);
 }
 
 void lmm_solve(lmm_system_t sys)
@@ -298,7 +389,7 @@ void lmm_solve(lmm_system_t sys)
   /* Compute Usage and store the variables that reach the maximum */
 
   cnst_list = &(sys->active_constraint_set);
-  DEBUG1("cnst_list : %d", xbt_swag_size(cnst_list));
+  DEBUG1("Active constraints : %d", xbt_swag_size(cnst_list));
   xbt_swag_foreach(cnst, cnst_list) {
     /* INIT */
     cnst->remaining = cnst->bound;
@@ -330,8 +421,11 @@ void lmm_solve(lmm_system_t sys)
     xbt_swag_foreach(var, var_list) {
       /* First check if some of these variables have reach their upper
          bound and update min_usage accordingly. */
-      if ((var->bound > 0) && (var->bound / var->weight < min_usage)) {
-	min_usage = var->bound / var->weight;
+      DEBUG5("var=%p, var->bound=%f, var->weight=%f, min_usage=%f, var->bound*var->weight=%f",
+	     var, var->bound, var->weight, min_usage,var->bound * var->weight);
+      if ((var->bound > 0) && (var->bound * var->weight < min_usage)) {
+	min_usage = var->bound * var->weight;
+	DEBUG1("Updated min_usage=%f",min_usage);
       }
     }
 
@@ -366,6 +460,9 @@ void lmm_solve(lmm_system_t sys)
   } while (xbt_swag_size(&(sys->saturated_variable_set)));
 
   sys->modified = 0;
+  if(XBT_LOG_ISENABLED(surf_maxmin, xbt_log_priority_debug)) {
+    lmm_print(sys);
+  }
 }
 
 /* Not a O(1) function */
@@ -396,6 +493,7 @@ void lmm_update_variable_weight(lmm_system_t sys, lmm_variable_t var,
   int i ;
   lmm_element_t elem;
 
+  XBT_IN3("(sys=%p, var=%p, weight=%f)",sys,var,weight);
   sys->modified = 1;
   var->weight = weight;
   xbt_swag_remove(var,&(sys->variable_set));
@@ -408,6 +506,7 @@ void lmm_update_variable_weight(lmm_system_t sys, lmm_variable_t var,
     if(weight) xbt_swag_insert_at_head(elem, &(elem->constraint->element_set));
     else xbt_swag_insert_at_tail(elem, &(elem->constraint->element_set));
   }
+  XBT_OUT;
 }
 
 double lmm_get_variable_weight(lmm_variable_t var)
@@ -438,19 +537,3 @@ lmm_constraint_t lmm_get_next_active_constraint(lmm_system_t sys, lmm_constraint
   return xbt_swag_getNext(cnst,(sys->active_constraint_set).offset);
 }
 
-
-/* void lmm_print(lmm_system_t sys) */
-/* { */
-/*   lmm_variable_t var = NULL; */
-/*   lmm_constraint_t cnst = NULL; */
-/*   lmm_element_t elem = NULL; */
-/*   xbt_swag_t cnst_list = NULL; */
-/*   xbt_swag_t var_list = NULL; */
-/*   xbt_swag_t elem_list = NULL; */
-
-/*   var_list = &(sys->variable_set); */
-/*   xbt_swag_foreach(var, var_list) { */
-/*     printf("%s : {\n",var->id); */
-/*     printf("\t %s : {\n",var->id); */
-/*   } */
-/* } */