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;
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;
+ l->visited_counter = 1;
XBT_DEBUG("Setting selective_update_active flag to %d\n",
l->selective_update_active);
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();
}
{
/* xbt_assert(xbt_swag_size(&(cnst->element_set)), */
/* "This list should be empty!"); */
- remove_active_constraint(sys, cnst);
+ make_constraint_inactive(sys, cnst);
free(cnst);
}
var->weight = weight;
var->bound = bound;
var->value = 0.0;
-
+ var->visited = sys->visited_counter - 1;
var->mu = 0.0;
var->new_mu = 0.0;
var->func_f = func_f_def;
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,
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)
{
return var->id;
}
-static XBT_INLINE void saturated_constraint_set_update(lmm_system_t sys,
+static XBT_INLINE int saturated_constraint_set_update(lmm_system_t sys,
lmm_constraint_t
cnst,
double *min_usage)
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_swag_insert(cnst, &(sys->saturated_constraint_set));
}
XBT_OUT();
+ return 0;
}
static XBT_INLINE void saturated_variable_set_update(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;
}
}
- xbt_swag_foreach(cnst, cnst_list) {
+ xbt_swag_foreach_safe(cnst, cnst_next, cnst_list) {
/* INIT */
cnst->remaining = cnst->bound;
if (cnst->remaining == 0)
cnst->usage = elem->value / elem->variable->weight;
make_elem_active(elem);
- if(keep_track){
- xbt_swag_insert((elem->variable)->id, keep_track);
- }
+ if (sys->keep_track)
+ xbt_swag_insert(elem->variable->id, sys->keep_track);
}
}
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);
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;
/* 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);
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);
}
else
xbt_swag_insert_at_tail(elem, &(elem->constraint->element_set));
- lmm_update_modified_set(sys, elem->constraint);
+ if (i == 0)
+ lmm_update_modified_set(sys, elem->constraint);
}
if (!weight)
var->value = 0.0;
* constraints that have changed. Each constraint change is propagated
* to the list of constraints for each variable.
*/
-static void lmm_update_modified_set(lmm_system_t sys,
- lmm_constraint_t cnst)
+static void lmm_update_modified_set_rec(lmm_system_t sys,
+ lmm_constraint_t cnst)
{
- lmm_element_t elem = NULL;
- lmm_variable_t var = NULL;
- xbt_swag_t elem_list = NULL;
- int i;
-
- /* return if selective update isn't active */
- if (!sys->selective_update_active)
- return;
-
- //XBT_DEBUG("Updating modified constraint set with constraint %d", cnst->id_int);
-
- if (xbt_swag_belongs(cnst, &(sys->modified_constraint_set)))
- return;
-
- //XBT_DEBUG("Inserting into modified constraint set %d", cnst->id_int);
-
- /* add to modified set */
- xbt_swag_insert(cnst, &(sys->modified_constraint_set));
+ lmm_element_t elem;
- elem_list = &(cnst->element_set);
- xbt_swag_foreach(elem, elem_list) {
- var = elem->variable;
- for (i = 0; i < var->cnsts_number; i++)
- if (cnst != var->cnsts[i].constraint) {
- //XBT_DEBUG("Updating modified %d calling for %d", cnst->id_int, var->cnsts[i].constraint->id_int);
- lmm_update_modified_set(sys, var->cnsts[i].constraint);
+ xbt_swag_foreach(elem, &cnst->element_set) {
+ lmm_variable_t var = elem->variable;
+ s_lmm_element_t *cnsts = var->cnsts;
+ int i;
+ for (i = 0; var->visited != sys->visited_counter
+ && i < var->cnsts_number ; i++) {
+ if (cnsts[i].constraint != cnst
+ && !xbt_swag_belongs(cnsts[i].constraint,
+ &sys->modified_constraint_set)) {
+ xbt_swag_insert(cnsts[i].constraint, &sys->modified_constraint_set);
+ lmm_update_modified_set_rec(sys, cnsts[i].constraint);
}
+ }
+ var->visited = sys->visited_counter;
+ }
+}
+
+static void lmm_update_modified_set(lmm_system_t sys,
+ lmm_constraint_t cnst)
+{
+ /* nothing to do if selective update isn't active */
+ if (sys->selective_update_active
+ && !xbt_swag_belongs(cnst, &sys->modified_constraint_set)) {
+ xbt_swag_insert(cnst, &sys->modified_constraint_set);
+ lmm_update_modified_set_rec(sys, cnst);
}
}
*/
static void lmm_remove_all_modified_set(lmm_system_t sys)
{
- xbt_swag_t modified_constraint_set = &sys->modified_constraint_set;
- lmm_constraint_t cnst;
- lmm_constraint_t cnst_next;
-
- xbt_swag_foreach_safe(cnst, cnst_next, modified_constraint_set) {
- xbt_swag_remove(cnst, modified_constraint_set);
+ if (++sys->visited_counter == 1) {
+ /* the counter wrapped around, reset each variable->visited */
+ lmm_variable_t var;
+ xbt_swag_foreach(var, &sys->variable_set)
+ var->visited = 0;
}
+ xbt_swag_reset(&sys->modified_constraint_set);
}
