-/* Authors: Arnaud Legrand */
+/* $Id$ */
+
+/* Copyright (c) 2004 Arnaud Legrand. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
- under the terms of the license (GNU LGPL) which comes with this package. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
#include "xbt/sysdep.h"
#include "xbt/error.h"
#include "maxmin_private.h"
#include <stdlib.h>
-/* extern lmm_system_t Sys; */
-/* extern lmm_constraint_t L1; */
-/* extern lmm_constraint_t L2; */
-/* extern lmm_constraint_t L3; */
-
-/* extern lmm_variable_t R_1_2_3; */
-/* extern lmm_variable_t R_1; */
-/* extern lmm_variable_t R_2; */
-/* extern lmm_variable_t R_3; */
-
-
lmm_system_t lmm_system_new(void)
{
lmm_system_t l = NULL;
l = xbt_new0(s_lmm_system_t, 1);
+ l->modified = 0;
xbt_swag_init(&(l->variable_set),
xbt_swag_offset(var, variable_set_hookup));
xbt_swag_init(&(l->constraint_set),
int i;
lmm_element_t elem = NULL;
+ sys->modified = 1;
+
for (i = 0; i < var->cnsts_number; i++) {
elem = &var->cnsts[i];
xbt_swag_remove(elem, &(elem->constraint->element_set));
{
lmm_element_t elem = NULL;
+ sys->modified = 1;
+
if (var->cnsts_number >= var->cnsts_size)
abort();
return(var->cnsts_number);
}
+lmm_variable_t lmm_get_var_from_cnst(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t *var)
+{
+ if(!(*var)) xbt_swag_getFirst(&(cnst->element_set));
+ else *var=xbt_swag_getNext(*var,cnst->element_set.offset);
+ return *var;
+}
+
void *lmm_constraint_id(lmm_constraint_t cnst)
{
return cnst->id;
return var->id;
}
-static void saturated_constraints_update(lmm_system_t sys,
+static void saturated_constraint_set_update(lmm_system_t sys,
lmm_constraint_t cnst,
xbt_maxmin_float_t * min_usage)
{
lmm_constraint_t useless_cnst = NULL;
+ sys->modified = 1;
+
if (cnst->remaining <= 0)
return;
if ((*min_usage < 0) || (*min_usage > cnst->remaining / cnst->usage)) {
}
}
-static void saturated_variables_update(lmm_system_t sys)
+static void saturated_variable_set_update(lmm_system_t sys)
{
lmm_constraint_t cnst = NULL;
xbt_swag_t cnst_list = NULL;
xbt_swag_t elem_list = NULL;
xbt_maxmin_float_t min_usage = -1;
+ if(!(sys->modified)) return;
+
/* Init */
var_list = &(sys->variable_set);
xbt_swag_foreach(var, var_list) {
}
/* Saturated constraints update */
- saturated_constraints_update(sys, cnst, &min_usage);
+ saturated_constraint_set_update(sys, cnst, &min_usage);
}
- saturated_variables_update(sys);
+ saturated_variable_set_update(sys);
/* Saturated variables update */
cnst_list = &(sys->active_constraint_set);
min_usage = -1;
xbt_swag_foreach(cnst, cnst_list) {
- saturated_constraints_update(sys, cnst, &min_usage);
+ saturated_constraint_set_update(sys, cnst, &min_usage);
}
- saturated_variables_update(sys);
+ saturated_variable_set_update(sys);
} while (xbt_swag_size(&(sys->saturated_variable_set)));
+
+ sys->modified = 0;
}
/* Not a O(1) function */
int i;
lmm_element_t elem = NULL;
+ sys->modified = 1;
for (i = 0; i < var->cnsts_number; i++)
if (var->cnsts[i].constraint == cnst) {
elem->value = value;
}
}
-void lmm_update_variable_bound(lmm_variable_t var,
+void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
xbt_maxmin_float_t bound)
{
+ sys->modified = 1;
var->bound = bound;
}
-void lmm_update_variable_weight(lmm_variable_t var,
+void lmm_update_variable_weight(lmm_system_t sys, lmm_variable_t var,
xbt_maxmin_float_t weight)
{
+ sys->modified = 1;
var->weight = weight;
}
-void lmm_update_constraint_bound(lmm_constraint_t cnst,
+void lmm_update_constraint_bound(lmm_system_t sys, lmm_constraint_t cnst,
xbt_maxmin_float_t bound)
{
+ sys->modified = 1;
cnst->bound = bound;
}