1 /* Authors: Arnaud Legrand */
3 /* This program is free software; you can redistribute it and/or modify it
4 under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "xbt/sysdep.h"
8 #include "maxmin_private.h"
11 lmm_system_t lmm_system_new(void)
13 lmm_system_t l = NULL;
15 s_lmm_constraint_t cnst;
17 l = xbt_new0(s_lmm_system_t, 1);
19 xbt_swag_init(&(l->variable_set),
20 xbt_swag_offset(var, variable_set_hookup));
21 xbt_swag_init(&(l->constraint_set),
22 xbt_swag_offset(cnst, constraint_set_hookup));
27 void lmm_system_free(lmm_system_t sys)
29 lmm_variable_t var = NULL;
30 lmm_constraint_t cnst = NULL;
32 while ((var = extract_variable(sys)))
35 while ((cnst = extract_constraint(sys)))
41 static void lmm_var_free(lmm_variable_t var)
44 lmm_element_t elem = NULL;
46 for (i = 0; i < var->cnsts_number; i++) {
47 elem = &var->cnsts[i];
48 xbt_swag_extract(elem, &(elem->constraint->element_set));
54 static void lmm_cnst_free(lmm_constraint_t cnst)
56 /* xbt_assert0(xbt_fifo_size(&(cnst->row)), */
57 /* "This list should be empty!"); */
61 lmm_constraint_t lmm_constraint_new(lmm_system_t sys, /* void *id, */
64 lmm_constraint_t cnst = NULL;
67 cnst = xbt_new0(s_lmm_constraint_t, 1);
69 xbt_swag_init(&(cnst->element_set),
70 xbt_swag_offset(elem, element_set_hookup));
72 cnst->bound = bound_value;
73 cnst->usage = UNUSED_CONSTRAINT;
74 insert_constraint(sys, cnst);
79 void lmm_constraint_free(lmm_system_t sys, lmm_constraint_t cnst)
81 remove_constraint(sys, cnst);
85 lmm_variable_t lmm_variable_new(lmm_system_t sys, /* void *id, */
86 FLOAT weight_value, FLOAT bound,
87 int number_of_constraints)
89 lmm_variable_t var = NULL;
91 var = xbt_new0(s_lmm_variable_t, 1);
93 var->cnsts = xbt_new0(s_lmm_element_t, number_of_constraints);
94 var->cnsts_size = number_of_constraints;
95 /* var->cnsts_number = 0; *//* Useless because of the calloc */
96 var->weight_value = weight_value;
99 insert_variable(sys, var);
104 void lmm_variable_free(lmm_system_t sys, lmm_variable_t var)
106 remove_variable(sys, var);
110 void lmm_add_constraint(lmm_system_t sys, lmm_constraint_t cnst,
111 lmm_variable_t var, FLOAT value)
113 lmm_element_t elem = NULL;
115 /* xbt_assert0(var->cnsts_number<var->cnsts_size,"Too much constraint"); */
117 elem = &(var->cnsts[var->cnsts_number++]);
120 elem->constraint = cnst;
122 insert_elem_in_constraint(elem);
126 void lmm_solve(lmm_system_t sys)
128 void **id_table = NULL;
130 /* Compute Usage and store the variables that reach the maximum */
133 /* Fix the variables that have to be */
135 /* Update Usage and store the variables that reach the maximum */