* under the terms of the license (GNU LGPL) which comes with this package. */
#include "src/kernel/lmm/maxmin.hpp"
-#include "src/surf/surf_interface.hpp"
#include "xbt/backtrace.hpp"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_maxmin, surf, "Logging specific to SURF (maxmin)");
{
// Ignore element with weight less than one (e.g. cross-traffic)
return (consumption_weight >= 1) ? 1 : 0;
- // There are other alternatives, but they will change the behaviour of the model..
+ // There are other alternatives, but they will change the behavior of the model..
// So do not use it unless you want to make a new model.
// If you do, remember to change the variables concurrency share to reflect it.
// Potential examples are:
continue;
const Element& elem = var.cnsts_[0];
- int belong_to_enabled = elem.enabled_element_set_hook.is_linked();
- int belong_to_disabled = elem.disabled_element_set_hook.is_linked();
- int belong_to_active = elem.active_element_set_hook.is_linked();
+ bool belong_to_enabled = elem.enabled_element_set_hook.is_linked();
+ bool belong_to_disabled = elem.disabled_element_set_hook.is_linked();
+ bool belong_to_active = elem.active_element_set_hook.is_linked();
for (Element const& elem2 : var.cnsts_) {
xbt_assert(belong_to_enabled == elem2.enabled_element_set_hook.is_linked(),
Constraint* cnst;
while ((var = extract_variable())) {
- auto demangled = simgrid::xbt::demangle(typeid(*var->id_).name());
+ auto demangled = simgrid::xbt::demangle(var->id_ ? typeid(*var->id_).name() : "(unidentified)");
XBT_WARN("Probable bug: a %s variable (#%d) not removed before the LMM system destruction.", demangled.get(),
var->rank_);
var_free(var);
delete cnst;
}
-Constraint::Constraint(void* id_value, double bound_value) : bound_(bound_value), id_(id_value)
+Constraint::Constraint(resource::Resource* id_value, double bound_value) : bound_(bound_value), id_(id_value)
{
rank_ = next_rank_++;
-
- remaining_ = 0.0;
- usage_ = 0.0;
- concurrency_limit_ = sg_concurrency_limit;
- concurrency_current_ = 0;
- concurrency_maximum_ = 0;
- sharing_policy_ = s4u::Link::SharingPolicy::SHARED;
-
- lambda_ = 0.0;
- new_lambda_ = 0.0;
- cnst_light_ = nullptr;
}
-Constraint* System::constraint_new(void* id, double bound_value)
+Constraint* System::constraint_new(resource::Resource* id, double bound_value)
{
Constraint* cnst = new Constraint(id, bound_value);
insert_constraint(cnst);
var_free(var);
}
+void System::variable_free_all()
+{
+ Variable* var;
+ while ((var = extract_variable()))
+ variable_free(var);
+}
+
void System::expand(Constraint* cnst, Variable* var, double consumption_weight)
{
modified_ = true;
// Check if this variable already has an active element in this constraint
- // If it does, substract it from the required slack
+ // If it does, subtract it from the required slack
int current_share = 0;
if (var->concurrency_share_ > 1) {
- for (Element& elem : var->cnsts_) {
+ for (const Element& elem : var->cnsts_) {
if (elem.constraint == cnst && elem.enabled_element_set_hook.is_linked())
current_share += elem.get_concurrency();
}
}
}
-static inline void saturated_variable_set_update(ConstraintLight* cnst_light_tab,
+static inline void saturated_variable_set_update(const ConstraintLight* cnst_light_tab,
const dyn_light_t& saturated_constraints, System* sys)
{
/* Add active variables (i.e. variables that need to be set) from the set of constraints to saturate
* (cnst_light_tab)*/
for (int const& saturated_cnst : saturated_constraints) {
- ConstraintLight& cnst = cnst_light_tab[saturated_cnst];
+ const ConstraintLight& cnst = cnst_light_tab[saturated_cnst];
for (Element const& elem : cnst.cnst->active_element_set_) {
xbt_assert(elem.variable->sharing_penalty_ > 0); // All elements of active_element_set should be active
if (elem.consumption_weight > 0 && not elem.variable->saturated_variable_set_hook_.is_linked())
double min_bound = -1;
XBT_DEBUG("Active constraints : %zu", cnst_list.size());
- /* Init: Only modified code portions: reset the value of active variables */
- for (Constraint const& cnst : cnst_list) {
- for (Element const& elem : cnst.enabled_element_set_) {
- xbt_assert(elem.variable->sharing_penalty_ > 0.0);
- elem.variable->value_ = 0.0;
- }
- }
-
- ConstraintLight* cnst_light_tab = new ConstraintLight[cnst_list.size()]();
+ cnst_light_vec.reserve(cnst_list.size());
+ ConstraintLight* cnst_light_tab = cnst_light_vec.data();
int cnst_light_num = 0;
- dyn_light_t saturated_constraints;
for (Constraint& cnst : cnst_list) {
/* INIT: Collect constraints that actually need to be saturated (i.e remaining and usage are strictly positive)
continue;
cnst.usage_ = 0;
for (Element& elem : cnst.enabled_element_set_) {
- xbt_assert(elem.variable->sharing_penalty_ > 0);
+ xbt_assert(elem.variable->sharing_penalty_ > 0.0);
+ elem.variable->value_ = 0.0;
if (elem.consumption_weight > 0) {
if (cnst.sharing_policy_ != s4u::Link::SharingPolicy::FATPIPE)
cnst.usage_ += elem.consumption_weight / elem.variable->sharing_penalty_;
XBT_DEBUG("Min usage: %f, Var(%d).penalty: %f, Var(%d).value: %f ", min_usage, var.rank_, var.sharing_penalty_,
var.rank_, var.value_);
- /* Update the usage of contraints where this variable is involved */
+ /* Update the usage of constraints where this variable is involved */
for (Element& elem : var.cnsts_) {
Constraint* cnst = elem.constraint;
if (cnst->sharing_policy_ != s4u::Link::SharingPolicy::FATPIPE) {
cnst->cnst_light_ = nullptr;
}
} else {
- cnst->cnst_light_->remaining_over_usage = cnst->remaining_ / cnst->usage_;
+ if (cnst->cnst_light_) {
+ cnst->cnst_light_->remaining_over_usage = cnst->remaining_ / cnst->usage_;
+ }
}
elem.make_inactive();
} else {
// Remember: non-shared constraints only require that max(elem.value * var.value) < cnst->bound
cnst->usage_ = 0.0;
elem.make_inactive();
- for (Element& elem2 : cnst->enabled_element_set_) {
+ for (const Element& elem2 : cnst->enabled_element_set_) {
xbt_assert(elem2.variable->sharing_penalty_ > 0);
if (elem2.variable->value_ > 0)
continue;
cnst->cnst_light_ = nullptr;
}
} else {
- cnst->cnst_light_->remaining_over_usage = cnst->remaining_ / cnst->usage_;
- xbt_assert(not cnst->active_element_set_.empty(),
- "Should not keep a maximum constraint that has no active"
- " element! You want to check the maxmin precision and possible rounding effects.");
+ if (cnst->cnst_light_) {
+ cnst->cnst_light_->remaining_over_usage = cnst->remaining_ / cnst->usage_;
+ xbt_assert(not cnst->active_element_set_.empty(),
+ "Should not keep a maximum constraint that has no active"
+ " element! You want to check the maxmin precision and possible rounding effects.");
+ }
}
}
}
}
saturated_variable_set_update(cnst_light_tab, saturated_constraints, this);
-
} while (cnst_light_num > 0);
modified_ = false;
}
check_concurrency();
-
- delete[] cnst_light_tab;
}
/** @brief Attribute the value bound to var->bound.
// Cannot use foreach loop, because System::enable_var() will modify disabled_element_set.. within the loop
while (numelem-- && elem) {
-
Element* nextelem;
if (elem->disabled_element_set_hook.is_linked()) {
auto iter = std::next(cnstr->disabled_element_set_.iterator_to(*elem));
if (penalty == var->sharing_penalty_)
return;
- int enabling_var = (penalty > 0 && var->sharing_penalty_ <= 0);
- int disabling_var = (penalty <= 0 && var->sharing_penalty_ > 0);
+ bool enabling_var = (penalty > 0 && var->sharing_penalty_ <= 0);
+ bool disabling_var = (penalty <= 0 && var->sharing_penalty_ > 0);
XBT_IN("(sys=%p, var=%p, penalty=%f)", this, var, penalty);
* A recursive algorithm to optimize the system recalculation selecting only constraints that have changed. Each
* constraint change is propagated to the list of constraints for each variable.
*/
-void System::update_modified_set_rec(Constraint* cnst)
+void System::update_modified_set_rec(const Constraint* cnst)
{
for (Element const& elem : cnst->enabled_element_set_) {
Variable* var = elem.variable;
// In effect, the var->visited value will no more be equal to visited counter
// To be clean, when visited counter has wrapped around, we force these var->visited values so that variables that
// were in the modified a long long time ago are not wrongly skipped here, which would lead to very nasty bugs
- // (i.e. not readibily reproducible, and requiring a lot of run time before happening).
+ // (i.e. not readily reproducible, and requiring a lot of run time before happening).
if (++visited_counter_ == 1) {
/* the counter wrapped around, reset each variable->visited */
for (Variable& var : variable_set)
return std::count_if(std::begin(enabled_element_set_), std::end(enabled_element_set_),
[](const Element& elem) { return elem.consumption_weight > 0; });
}
-}
-}
-}
+
+} // namespace lmm
+} // namespace kernel
+} // namespace simgrid