#include "xbt/log.h"
#include "xbt/mallocator.h"
#include "xbt/sysdep.h"
+#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <cxxabi.h>
{
lmm_variable_t var = (lmm_variable_t)varIt;
- if (not var->cnsts_number)
+ if (var->cnsts.empty())
continue;
lmm_element_t elem = &var->cnsts[0];
int belong_to_disabled = xbt_swag_belongs(elem, &(elem->constraint->disabled_element_set));
int belong_to_active = xbt_swag_belongs(elem, &(elem->constraint->active_element_set));
- for (int i = 1; i < var->cnsts_number; i++) {
- elem = &var->cnsts[i];
- xbt_assert(belong_to_enabled == xbt_swag_belongs(elem, &(elem->constraint->enabled_element_set)),
+ for (s_lmm_element_t const& elem : var->cnsts) {
+ xbt_assert(belong_to_enabled == xbt_swag_belongs(&elem, &(elem.constraint->enabled_element_set)),
"Variable inconsistency (1): enabled_element_set");
- xbt_assert(belong_to_disabled == xbt_swag_belongs(elem, &(elem->constraint->disabled_element_set)),
+ xbt_assert(belong_to_disabled == xbt_swag_belongs(&elem, &(elem.constraint->disabled_element_set)),
"Variable inconsistency (2): disabled_element_set");
- xbt_assert(belong_to_active == xbt_swag_belongs(elem, &(elem->constraint->active_element_set)),
+ xbt_assert(belong_to_active == xbt_swag_belongs(&elem, &(elem.constraint->active_element_set)),
"Variable inconsistency (3): active_element_set");
}
}
// TODOLATER Can do better than that by leaving only the variable in only one enabled_element_set, call
// lmm_update_modified_set, and then remove it..
- if (var->cnsts_number)
+ if (not var->cnsts.empty())
lmm_update_modified_set(sys, var->cnsts[0].constraint);
- for (int i = 0; i < var->cnsts_number; i++) {
- lmm_element_t elem = &var->cnsts[i];
+ for (s_lmm_element_t& elem : var->cnsts) {
if (var->sharing_weight > 0)
- lmm_decrease_concurrency(elem);
- xbt_swag_remove(elem, &(elem->constraint->enabled_element_set));
- xbt_swag_remove(elem, &(elem->constraint->disabled_element_set));
- xbt_swag_remove(elem, &(elem->constraint->active_element_set));
- int nelements = xbt_swag_size(&(elem->constraint->enabled_element_set)) +
- xbt_swag_size(&(elem->constraint->disabled_element_set));
+ lmm_decrease_concurrency(&elem);
+ xbt_swag_remove(&elem, &(elem.constraint->enabled_element_set));
+ xbt_swag_remove(&elem, &(elem.constraint->disabled_element_set));
+ xbt_swag_remove(&elem, &(elem.constraint->active_element_set));
+ int nelements = xbt_swag_size(&(elem.constraint->enabled_element_set)) +
+ xbt_swag_size(&(elem.constraint->disabled_element_set));
if (nelements == 0)
- make_constraint_inactive(sys, elem->constraint);
+ make_constraint_inactive(sys, elem.constraint);
else
- lmm_on_disabled_var(sys, elem->constraint);
+ lmm_on_disabled_var(sys, elem.constraint);
}
// Check if we can enable new variables going through the constraints where var was.
- // Do it after removing all elements, so he first disabled variables get priority over those with smaller requirement
- for (int i = 0; i < var->cnsts_number; i++) {
- lmm_element_t elem = &var->cnsts[i];
- if (xbt_swag_size(&(elem->constraint->disabled_element_set)))
- lmm_on_disabled_var(sys, elem->constraint);
+ // Do it after removing all elements, so the first disabled variables get priority over those with smaller requirement
+ for (s_lmm_element_t& elem : var->cnsts) {
+ if (xbt_swag_size(&(elem.constraint->disabled_element_set)))
+ lmm_on_disabled_var(sys, elem.constraint);
}
- var->cnsts_number = 0;
+ var->cnsts.clear();
lmm_check_concurrency(sys);
static void *lmm_variable_mallocator_new_f()
{
- lmm_variable_t var = new s_lmm_variable_t;
- var->cnsts = nullptr; /* will be created by realloc */
- return var;
+ return new s_lmm_variable_t;
}
static void lmm_variable_mallocator_free_f(void *var)
{
- xbt_free(((lmm_variable_t) var)->cnsts);
delete static_cast<lmm_variable_t>(var);
}
lmm_variable_t var = (lmm_variable_t)xbt_mallocator_get(sys->variable_mallocator);
var->id = id;
var->id_int = Global_debug_id++;
- var->cnsts = static_cast<s_lmm_element_t*>(xbt_realloc(var->cnsts, number_of_constraints * sizeof(s_lmm_element_t)));
- for (int i = 0; i < number_of_constraints; i++) {
- var->cnsts[i].enabled_element_set_hookup.next = nullptr;
- var->cnsts[i].enabled_element_set_hookup.prev = nullptr;
- var->cnsts[i].disabled_element_set_hookup.next = nullptr;
- var->cnsts[i].disabled_element_set_hookup.prev = nullptr;
- var->cnsts[i].active_element_set_hookup.next = nullptr;
- var->cnsts[i].active_element_set_hookup.prev = nullptr;
- var->cnsts[i].constraint = nullptr;
- var->cnsts[i].variable = nullptr;
- var->cnsts[i].consumption_weight = 0.0;
- }
- var->cnsts_size = number_of_constraints;
- var->cnsts_number = 0;
+ var->cnsts.reserve(number_of_constraints);
var->sharing_weight = sharing_weight;
var->staged_weight = 0.0;
var->bound = bound;
void lmm_shrink(lmm_system_t sys, lmm_constraint_t cnst, lmm_variable_t var)
{
- lmm_element_t elem = nullptr;
- int found = 0;
-
- for (int i = 0; i < var->cnsts_number; i++) {
- elem = &(var->cnsts[i]);
- if (elem->constraint == cnst) {
- found = 1;
- break;
- }
- }
-
- if (not found) {
+ auto elem_it = std::find_if(begin(var->cnsts), end(var->cnsts),
+ [&cnst](s_lmm_element_t const& x) { return x.constraint == cnst; });
+ if (elem_it == end(var->cnsts)) {
XBT_DEBUG("cnst %p is not found in var %p", cnst, var);
return;
}
+ s_lmm_element_t& elem = *elem_it;
sys->modified = 1;
- XBT_DEBUG("remove elem(value %f, cnst %p, var %p) in var %p", elem->consumption_weight, elem->constraint,
- elem->variable, var);
+ XBT_DEBUG("remove elem(value %f, cnst %p, var %p) in var %p", elem.consumption_weight, elem.constraint, elem.variable,
+ var);
/* We are going to change the constraint object and the variable object.
* Propagate this change to other objects. Calling here before removing variable from not active elements
lmm_update_modified_set(sys, var->cnsts[0].constraint); // will look up enabled_element_set of this constraint, and
//then each var in the enabled_element_set, and each var->cnsts[i].
- if(xbt_swag_remove(elem, &(elem->constraint->enabled_element_set)))
- lmm_decrease_concurrency(elem);
+ if (xbt_swag_remove(&elem, &(elem.constraint->enabled_element_set)))
+ lmm_decrease_concurrency(&elem);
- xbt_swag_remove(elem, &(elem->constraint->active_element_set));
- elem->constraint = nullptr;
- elem->variable = nullptr;
- elem->consumption_weight = 0;
+ xbt_swag_remove(&elem, &(elem.constraint->active_element_set));
+ elem.constraint = nullptr;
+ elem.variable = nullptr;
+ elem.consumption_weight = 0;
- var->cnsts_number -= 1;
+ var->cnsts.pop_back();
//No variable in this constraint -> make it inactive
if (xbt_swag_size(&(cnst->enabled_element_set))+xbt_swag_size(&(cnst->disabled_element_set)) == 0)
make_constraint_inactive(sys, cnst);
else {
//Check maxconcurrency to see if we can enable new variables
- lmm_on_disabled_var(sys,elem->constraint);
+ lmm_on_disabled_var(sys, elem.constraint);
}
lmm_check_concurrency(sys);
//If it does, substract it from the required slack
int current_share = 0;
if(var->concurrency_share>1){
- for (int i = 0; i < var->cnsts_number; i++) {
- if(var->cnsts[i].constraint==cnst &&
- xbt_swag_belongs(&var->cnsts[i],&(var->cnsts[i].constraint->enabled_element_set)))
- current_share+=lmm_element_concurrency(&(var->cnsts[i]));
+ for (s_lmm_element_t& elem : var->cnsts) {
+ if (elem.constraint == cnst && xbt_swag_belongs(&elem, &(elem.constraint->enabled_element_set)))
+ current_share += lmm_element_concurrency(&elem);
}
}
if (var->sharing_weight > 0 && var->concurrency_share - current_share > lmm_concurrency_slack(cnst)) {
double weight = var->sharing_weight;
lmm_disable_var(sys,var);
- for (int i = 0; i < var->cnsts_number; i++)
- lmm_on_disabled_var(sys,var->cnsts[i].constraint);
+ for (s_lmm_element_t const& elem : var->cnsts)
+ lmm_on_disabled_var(sys, elem.constraint);
consumption_weight = 0;
var->staged_weight=weight;
xbt_assert(not var->sharing_weight);
}
- xbt_assert(var->cnsts_number < var->cnsts_size, "Too much constraints");
+ xbt_assert(var->cnsts.size() < var->cnsts.capacity(), "Too much constraints");
- lmm_element_t elem = &(var->cnsts[var->cnsts_number++]);
+ var->cnsts.resize(var->cnsts.size() + 1);
+ s_lmm_element_t& elem = var->cnsts.back();
- elem->consumption_weight = consumption_weight;
- elem->constraint = cnst;
- elem->variable = var;
+ elem.consumption_weight = consumption_weight;
+ elem.constraint = cnst;
+ elem.variable = var;
if (var->sharing_weight) {
- xbt_swag_insert_at_head(elem, &(elem->constraint->enabled_element_set));
- lmm_increase_concurrency(elem);
+ xbt_swag_insert_at_head(&elem, &(elem.constraint->enabled_element_set));
+ lmm_increase_concurrency(&elem);
} else
- xbt_swag_insert_at_tail(elem, &(elem->constraint->disabled_element_set));
+ xbt_swag_insert_at_tail(&elem, &(elem.constraint->disabled_element_set));
if (not sys->selective_update_active) {
make_constraint_active(sys, cnst);
- } else if (elem->consumption_weight > 0 || var->sharing_weight > 0) {
+ } else if (elem.consumption_weight > 0 || var->sharing_weight > 0) {
make_constraint_active(sys, cnst);
lmm_update_modified_set(sys, cnst);
//TODOLATER: Why do we need this second call?
- if (var->cnsts_number > 1)
+ if (var->cnsts.size() > 1)
lmm_update_modified_set(sys, var->cnsts[0].constraint);
}
void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst, lmm_variable_t var, double value)
{
- int i;
sys->modified = 1;
lmm_check_concurrency(sys);
//BEWARE: In case you have multiple elements in one constraint, this will always add value to the first element.
- for (i = 0; i < var->cnsts_number; i++)
- if (var->cnsts[i].constraint == cnst)
- break;
-
- if (i < var->cnsts_number) {
+ auto elem_it = std::find_if(begin(var->cnsts), end(var->cnsts),
+ [&cnst](s_lmm_element_t const& x) { return x.constraint == cnst; });
+ if (elem_it != end(var->cnsts)) {
+ s_lmm_element_t& elem = *elem_it;
if (var->sharing_weight)
- lmm_decrease_concurrency(&var->cnsts[i]);
+ lmm_decrease_concurrency(&elem);
if (cnst->sharing_policy)
- var->cnsts[i].consumption_weight += value;
+ elem.consumption_weight += value;
else
- var->cnsts[i].consumption_weight = MAX(var->cnsts[i].consumption_weight, value);
+ elem.consumption_weight = MAX(elem.consumption_weight, value);
//We need to check that increasing value of the element does not cross the concurrency limit
if (var->sharing_weight) {
- if(lmm_concurrency_slack(cnst)<lmm_element_concurrency(&var->cnsts[i])){
+ if (lmm_concurrency_slack(cnst) < lmm_element_concurrency(&elem)) {
double weight = var->sharing_weight;
lmm_disable_var(sys,var);
- for (int j = 0; j < var->cnsts_number; j++)
- lmm_on_disabled_var(sys,var->cnsts[j].constraint);
+ for (s_lmm_element_t const& elem2 : var->cnsts)
+ lmm_on_disabled_var(sys, elem2.constraint);
var->staged_weight=weight;
xbt_assert(not var->sharing_weight);
}
- lmm_increase_concurrency(&var->cnsts[i]);
+ lmm_increase_concurrency(&elem);
}
lmm_update_modified_set(sys, cnst);
} else
lmm_check_concurrency(sys);
}
-lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t /*sys*/, lmm_variable_t var, int num)
+lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t /*sys*/, lmm_variable_t var, unsigned num)
{
- if (num < var->cnsts_number)
+ if (num < var->cnsts.size())
return (var->cnsts[num].constraint);
else
return nullptr;
}
-double lmm_get_cnst_weight_from_var(lmm_system_t /*sys*/, lmm_variable_t var, int num)
+double lmm_get_cnst_weight_from_var(lmm_system_t /*sys*/, lmm_variable_t var, unsigned num)
{
- if (num < var->cnsts_number)
+ if (num < var->cnsts.size())
return (var->cnsts[num].consumption_weight);
else
return 0.0;
int lmm_get_number_of_cnst_from_var(lmm_system_t /*sys*/, lmm_variable_t var)
{
- return (var->cnsts_number);
+ return (var->cnsts.size());
}
lmm_variable_t lmm_get_var_from_cnst(lmm_system_t /*sys*/, lmm_constraint_t cnst, lmm_element_t * elem)
}
while ((var = (lmm_variable_t)xbt_swag_getFirst(var_list))) {
- int i;
-
if (min_bound < 0) {
//If no variable could reach its bound, deal iteratively the constraints usage ( at worst one constraint is
// saturated at each cycle)
var->id_int, var->value);
/* Update the usage of contraints where this variable is involved */
- for (i = 0; i < var->cnsts_number; i++) {
- lmm_element_t elem = &var->cnsts[i];
- lmm_constraint_t cnst = elem->constraint;
+ for (s_lmm_element_t& elem : var->cnsts) {
+ lmm_constraint_t cnst = elem.constraint;
if (cnst->sharing_policy) {
- //Remember: shared constraints require that sum(elem->value * var->value) < cnst->bound
- double_update(&(cnst->remaining), elem->consumption_weight * var->value, cnst->bound * sg_maxmin_precision);
- double_update(&(cnst->usage), elem->consumption_weight / var->sharing_weight, sg_maxmin_precision);
- //If the constraint is saturated, remove it from the set of active constraints (light_tab)
+ // Remember: shared constraints require that sum(elem.value * var->value) < cnst->bound
+ double_update(&(cnst->remaining), elem.consumption_weight * var->value, cnst->bound * sg_maxmin_precision);
+ double_update(&(cnst->usage), elem.consumption_weight / var->sharing_weight, sg_maxmin_precision);
+ // If the constraint is saturated, remove it from the set of active constraints (light_tab)
if (not double_positive(cnst->usage, sg_maxmin_precision) ||
not double_positive(cnst->remaining, cnst->bound * sg_maxmin_precision)) {
if (cnst->cnst_light) {
} else {
cnst->cnst_light->remaining_over_usage = cnst->remaining / cnst->usage;
}
- make_elem_inactive(elem);
+ make_elem_inactive(&elem);
} else {
- //Remember: non-shared constraints only require that max(elem->value * var->value) < cnst->bound
+ // Remember: non-shared constraints only require that max(elem.value * var->value) < cnst->bound
cnst->usage = 0.0;
- make_elem_inactive(elem);
+ make_elem_inactive(&elem);
xbt_swag_t elem_list = &(cnst->enabled_element_set);
xbt_swag_foreach(_elem, elem_list) {
- elem = (lmm_element_t)_elem;
- xbt_assert(elem->variable->sharing_weight > 0);
- if (elem->variable->value > 0) continue;
- if (elem->consumption_weight > 0)
- cnst->usage = MAX(cnst->usage, elem->consumption_weight / elem->variable->sharing_weight);
+ lmm_element_t elem2 = static_cast<lmm_element_t>(_elem);
+ xbt_assert(elem2->variable->sharing_weight > 0);
+ if (elem2->variable->value > 0)
+ continue;
+ if (elem2->consumption_weight > 0)
+ cnst->usage = MAX(cnst->usage, elem2->consumption_weight / elem2->variable->sharing_weight);
}
//If the constraint is saturated, remove it from the set of active constraints (light_tab)
if (not double_positive(cnst->usage, sg_maxmin_precision) ||
sys->modified = 1;
var->bound = bound;
- if (var->cnsts_number)
+ if (not var->cnsts.empty())
lmm_update_modified_set(sys, var->cnsts[0].constraint);
}
/** \brief Measure the minimum concurrency slack across all constraints where the given var is involved */
int lmm_cnstrs_min_concurrency_slack(lmm_variable_t var){
int minslack = std::numeric_limits<int>::max();
- for (int i = 0; i < var->cnsts_number; i++) {
- int slack = lmm_concurrency_slack(var->cnsts[i].constraint);
+ for (s_lmm_element_t const& elem : var->cnsts) {
+ int slack = lmm_concurrency_slack(elem.constraint);
//This is only an optimization, to avoid looking at more constraints when slack is already zero
//Disable it when debugging to let lmm_concurrency_slack catch nasty things
xbt_swag_remove(var, &(sys->variable_set));
xbt_swag_insert_at_head(var, &(sys->variable_set));
- for (int i = 0; i < var->cnsts_number; i++) {
- lmm_element_t elem = &var->cnsts[i];
- xbt_swag_remove(elem, &(elem->constraint->disabled_element_set));
- xbt_swag_insert_at_head(elem, &(elem->constraint->enabled_element_set));
- lmm_increase_concurrency(elem);
+ for (s_lmm_element_t& elem : var->cnsts) {
+ xbt_swag_remove(&elem, &(elem.constraint->disabled_element_set));
+ xbt_swag_insert_at_head(&elem, &(elem.constraint->enabled_element_set));
+ lmm_increase_concurrency(&elem);
}
- if (var->cnsts_number)
+ if (not var->cnsts.empty())
lmm_update_modified_set(sys, var->cnsts[0].constraint);
//When used within lmm_on_disabled_var, we would get an assertion fail, because transiently there can be variables
// moving the last element of var.
xbt_swag_remove(var, &(sys->variable_set));
xbt_swag_insert_at_tail(var, &(sys->variable_set));
- if (var->cnsts_number)
+ if (not var->cnsts.empty())
lmm_update_modified_set(sys, var->cnsts[0].constraint);
- for (int i = 0; i < var->cnsts_number; i++) {
- lmm_element_t elem = &var->cnsts[i];
- xbt_swag_remove(elem, &(elem->constraint->enabled_element_set));
- xbt_swag_insert_at_tail(elem, &(elem->constraint->disabled_element_set));
+ for (s_lmm_element_t& elem : var->cnsts) {
+ xbt_swag_remove(&elem, &(elem.constraint->enabled_element_set));
+ xbt_swag_insert_at_tail(&elem, &(elem.constraint->disabled_element_set));
- xbt_swag_remove(elem, &(elem->constraint->active_element_set));
+ xbt_swag_remove(&elem, &(elem.constraint->active_element_set));
- lmm_decrease_concurrency(elem);
+ lmm_decrease_concurrency(&elem);
}
var->sharing_weight = 0.0;
//TODOLATER: Why lmm_modified_set has been changed in git version 2392B5157...? Looks equivalent logically and less obvious..
xbt_swag_foreach(_elem, &cnst->enabled_element_set) {
lmm_variable_t var = ((lmm_element_t)_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 && not 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);
+ for (s_lmm_element_t const& elem : var->cnsts) {
+ if (var->visited == sys->visited_counter)
+ break;
+ if (elem.constraint != cnst && not xbt_swag_belongs(elem.constraint, &sys->modified_constraint_set)) {
+ xbt_swag_insert(elem.constraint, &sys->modified_constraint_set);
+ lmm_update_modified_set_rec(sys, elem.constraint);
}
}
//var will be ignored in later visits as long as sys->visited_counter does not move