int size;
} s_dyn_light_t, *dyn_light_t;
-double sg_maxmin_precision = 0.00001;
-double sg_surf_precision = 0.00001;
+double sg_maxmin_precision = 0.00001; /* Change this with --cfg=maxmin/precision:VALUE */
+double sg_surf_precision = 0.00001; /* Change this with --cfg=surf/precision:VALUE */
+int sg_concurrency_limit = -1; /* Change this with --cfg=maxmin/concurrency-limit:VALUE */
-static void *lmm_variable_mallocator_new_f(void);
+static void *lmm_variable_mallocator_new_f();
static void lmm_variable_mallocator_free_f(void *var);
-#define lmm_variable_mallocator_reset_f ((void_f_pvoid_t)NULL)
+#define lmm_variable_mallocator_reset_f ((void_f_pvoid_t)nullptr)
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);
static int Global_debug_id = 1;
"Concurrency limit overflow!");
}
-lmm_system_t lmm_system_new(int selective_update)
+lmm_system_t lmm_system_new(bool selective_update)
{
- lmm_system_t l = NULL;
+ lmm_system_t l = nullptr;
s_lmm_variable_t var;
s_lmm_constraint_t cnst;
lmm_variable_mallocator_free_f,
lmm_variable_mallocator_reset_f);
+ l->solve_fun = &lmm_solve;
+
return l;
}
lmm_variable_t var = nullptr;
lmm_constraint_t cnst = nullptr;
- if (!sys)
+ if (not sys)
return;
while ((var = (lmm_variable_t) extract_variable(sys))) {
int i;
int nelements;
- lmm_element_t elem = NULL;
+ lmm_element_t elem = nullptr;
XBT_IN("(sys=%p, var=%p)", sys, var);
sys->modified = 1;
xbt_swag_remove(elem, &(elem->constraint->active_element_set));
nelements=xbt_swag_size(&(elem->constraint->enabled_element_set)) +
xbt_swag_size(&(elem->constraint->disabled_element_set));
- if (!nelements)
+ if (not nelements)
make_constraint_inactive(sys, elem->constraint);
else
lmm_on_disabled_var(sys,elem->constraint);
lmm_constraint_t lmm_constraint_new(lmm_system_t sys, void *id, double bound_value)
{
- lmm_constraint_t cnst = NULL;
+ lmm_constraint_t cnst = nullptr;
s_lmm_element_t elem;
cnst = xbt_new0(s_lmm_constraint_t, 1);
cnst->bound = bound_value;
cnst->concurrency_maximum=0;
cnst->concurrency_current=0;
- //TODO MARTIN Maybe a configuration item for the default cap concurrency?
- cnst->concurrency_limit=100;
+ cnst->concurrency_limit = sg_concurrency_limit;
cnst->usage = 0;
cnst->sharing_policy = 1; /* FIXME: don't hardcode the value */
insert_constraint(sys, cnst);
*/
inline void lmm_constraint_free(lmm_system_t sys,lmm_constraint_t cnst)
{
- xbt_assert(!xbt_swag_size(&(cnst->active_element_set)),"Removing constraint but it still has active elements");
- xbt_assert(!xbt_swag_size(&(cnst->enabled_element_set)),"Removing constraint but it still has enabled elements");
- xbt_assert(!xbt_swag_size(&(cnst->disabled_element_set)),"Removing constraint but it still has disabled elements");
+ xbt_assert(not xbt_swag_size(&(cnst->active_element_set)), "Removing constraint but it still has active elements");
+ xbt_assert(not xbt_swag_size(&(cnst->enabled_element_set)), "Removing constraint but it still has enabled elements");
+ xbt_assert(not xbt_swag_size(&(cnst->disabled_element_set)),
+ "Removing constraint but it still has disabled elements");
remove_constraint(sys, cnst);
lmm_cnst_free(sys, cnst);
}
-static void *lmm_variable_mallocator_new_f(void)
+static void *lmm_variable_mallocator_new_f()
{
lmm_variable_t var = xbt_new(s_lmm_variable_t, 1);
- var->cnsts = NULL; /* will be created by realloc */
+ var->cnsts = nullptr; /* will be created by realloc */
return var;
}
lmm_variable_t lmm_variable_new(lmm_system_t sys, void *id, double weight, double bound, int number_of_constraints)
{
- lmm_variable_t var = NULL;
+ lmm_variable_t var = nullptr;
int i;
XBT_IN("(sys=%p, id=%p, weight=%f, bound=%f, num_cons =%d)", sys, id, weight, bound, number_of_constraints);
var->id_int = Global_debug_id++;
var->cnsts = (s_lmm_element_t *) xbt_realloc(var->cnsts, number_of_constraints * sizeof(s_lmm_element_t));
for (i = 0; i < number_of_constraints; i++) {
- var->cnsts[i].enabled_element_set_hookup.next = NULL;
- var->cnsts[i].enabled_element_set_hookup.prev = NULL;
- var->cnsts[i].disabled_element_set_hookup.next = NULL;
- var->cnsts[i].disabled_element_set_hookup.prev = NULL;
- var->cnsts[i].active_element_set_hookup.next = NULL;
- var->cnsts[i].active_element_set_hookup.prev = NULL;
- var->cnsts[i].constraint = NULL;
- var->cnsts[i].variable = NULL;
+ 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].value = 0.0;
}
var->cnsts_size = number_of_constraints;
var->func_fp = func_fp_def;
var->func_fpi = func_fpi_def;
- var->variable_set_hookup.next = NULL;
- var->variable_set_hookup.prev = NULL;
- var->saturated_variable_set_hookup.next = NULL;
- var->saturated_variable_set_hookup.prev = NULL;
+ var->variable_set_hookup.next = nullptr;
+ var->variable_set_hookup.prev = nullptr;
+ var->saturated_variable_set_hookup.next = nullptr;
+ var->saturated_variable_set_hookup.prev = nullptr;
if (weight)
xbt_swag_insert_at_head(var, &(sys->variable_set));
void lmm_shrink(lmm_system_t sys, lmm_constraint_t cnst, lmm_variable_t var)
{
- lmm_element_t elem = NULL;
+ lmm_element_t elem = nullptr;
int found = 0;
int i;
}
}
- if (!found) {
+ if (not found) {
XBT_DEBUG("cnst %p is not found in var %p", cnst, var);
return;
}
lmm_decrease_concurrency(elem);
xbt_swag_remove(elem, &(elem->constraint->active_element_set));
- elem->constraint = NULL;
- elem->variable = NULL;
+ elem->constraint = nullptr;
+ elem->variable = nullptr;
elem->value = 0;
var->cnsts_number -= 1;
void lmm_expand(lmm_system_t sys, lmm_constraint_t cnst, lmm_variable_t var, double value)
{
- lmm_element_t elem = NULL;
+ lmm_element_t elem = nullptr;
double weight;
int i,current_share;
lmm_on_disabled_var(sys,var->cnsts[i].constraint);
value=0;
var->staged_weight=weight;
- xbt_assert(!var->weight);
+ xbt_assert(not var->weight);
}
xbt_assert(var->cnsts_number < var->cnsts_size, "Too much constraints");
} else
xbt_swag_insert_at_tail(elem, &(elem->constraint->disabled_element_set));
- if(!sys->selective_update_active) {
+ if (not sys->selective_update_active) {
make_constraint_active(sys, cnst);
} else if(elem->value>0 || var->weight >0) {
make_constraint_active(sys, cnst);
for (j = 0; j < var->cnsts_number; j++)
lmm_on_disabled_var(sys,var->cnsts[j].constraint);
var->staged_weight=weight;
- xbt_assert(!var->weight);
+ xbt_assert(not var->weight);
}
lmm_increase_concurrency(&var->cnsts[i]);
}
if (num < var->cnsts_number)
return (var->cnsts[num].constraint);
else
- return NULL;
+ return nullptr;
}
double lmm_get_cnst_weight_from_var(lmm_system_t /*sys*/, lmm_variable_t var, int num)
if (*elem)
return (*elem)->variable;
else
- return NULL;
+ return nullptr;
}
//if we modify the swag between calls, normal version may loop forever
if(*numelem>0){
(*numelem) --;
}else
- return NULL;
+ return nullptr;
}
if (*elem){
//elem is not null, so we carry on
}
return (*elem)->variable;
}else
- return NULL;
+ return nullptr;
}
void *lmm_constraint_id(lmm_constraint_t cnst)
dyn_light_t saturated_constraint_set, lmm_system_t sys)
{
/* Add active variables (i.e. variables that need to be set) from the set of constraints to saturate (cnst_light_tab)*/
- lmm_constraint_light_t cnst = NULL;
+ lmm_constraint_light_t cnst = nullptr;
void *_elem;
- lmm_element_t elem = NULL;
- xbt_swag_t elem_list = NULL;
+ lmm_element_t elem = nullptr;
+ xbt_swag_t elem_list = nullptr;
int i;
for(i = 0; i< saturated_constraint_set->pos; i++){
cnst = &cnst_light_tab[saturated_constraint_set->data[i]];
void lmm_print(lmm_system_t sys)
{
- void *_cnst, *_elem, *_var;
- lmm_constraint_t cnst = NULL;
- lmm_element_t elem = NULL;
- lmm_variable_t var = NULL;
- xbt_swag_t cnst_list = NULL;
- xbt_swag_t var_list = NULL;
- xbt_swag_t elem_list = NULL;
- char print_buf[1024];
- char *trace_buf = (char*) xbt_malloc0(sizeof(char));
+ void* _cnst;
+ void* _elem;
+ void* _var;
+ lmm_constraint_t cnst = nullptr;
+ lmm_element_t elem = nullptr;
+ lmm_variable_t var = nullptr;
+ xbt_swag_t cnst_list = nullptr;
+ xbt_swag_t var_list = nullptr;
+ xbt_swag_t elem_list = nullptr;
+ std::string buf = std::string("MAX-MIN ( ");
double sum = 0.0;
/* Printing Objective */
var_list = &(sys->variable_set);
- sprintf(print_buf, "MAX-MIN ( ");
- trace_buf = (char*) xbt_realloc(trace_buf, strlen(trace_buf) + strlen(print_buf) + 1);
- strcat(trace_buf, print_buf);
xbt_swag_foreach(_var, var_list) {
- var = (lmm_variable_t)_var;
- sprintf(print_buf, "'%d'(%f) ", var->id_int, var->weight);
- trace_buf = (char*) xbt_realloc(trace_buf, strlen(trace_buf) + strlen(print_buf) + 1);
- strcat(trace_buf, print_buf);
+ var = (lmm_variable_t)_var;
+ buf = buf + "'" + std::to_string(var->id_int) + "'(" + std::to_string(var->weight) + ") ";
}
- sprintf(print_buf, ")");
- trace_buf = (char*) xbt_realloc(trace_buf, strlen(trace_buf) + strlen(print_buf) + 1);
- strcat(trace_buf, print_buf);
- XBT_DEBUG("%20s", trace_buf);
- trace_buf[0] = '\000';
+ buf += ")";
+ XBT_DEBUG("%20s", buf.c_str());
+ buf.clear();
XBT_DEBUG("Constraints");
/* Printing Constraints */
sum = 0.0;
//Show the enabled variables
elem_list = &(cnst->enabled_element_set);
- sprintf(print_buf, "\t");
- trace_buf = (char*) xbt_realloc(trace_buf, strlen(trace_buf) + strlen(print_buf) + 1);
- strcat(trace_buf, print_buf);
- sprintf(print_buf, "%s(",(cnst->sharing_policy)?"":"max");
- trace_buf = (char*) xbt_realloc(trace_buf, strlen(trace_buf) + strlen(print_buf) + 1);
- strcat(trace_buf, print_buf);
+ buf += "\t";
+ buf += ((cnst->sharing_policy) ? "(" : "max(");
xbt_swag_foreach(_elem, elem_list) {
elem = (lmm_element_t)_elem;
- sprintf(print_buf, "%f.'%d'(%f) %s ", elem->value,
- elem->variable->id_int, elem->variable->value,(cnst->sharing_policy)?"+":",");
- trace_buf = (char*) xbt_realloc(trace_buf, strlen(trace_buf) + strlen(print_buf) + 1);
- strcat(trace_buf, print_buf);
+ buf = buf + std::to_string(elem->value) + ".'" + std::to_string(elem->variable->id_int) + "'(" +
+ std::to_string(elem->variable->value) + ")" + ((cnst->sharing_policy) ? " + " : " , ");
if(cnst->sharing_policy)
sum += elem->value * elem->variable->value;
else
elem_list = &(cnst->disabled_element_set);
xbt_swag_foreach(_elem, elem_list) {
elem = (lmm_element_t)_elem;
- sprintf(print_buf, "%f.'%d'(%f) %s ", elem->value,
- elem->variable->id_int, elem->variable->value,(cnst->sharing_policy)?"+":",");
- trace_buf = (char*) xbt_realloc(trace_buf, strlen(trace_buf) + strlen(print_buf) + 1);
- strcat(trace_buf, print_buf);
+ buf = buf + std::to_string(elem->value) + ".'" + std::to_string(elem->variable->id_int) + "'(" +
+ std::to_string(elem->variable->value) + ")" + ((cnst->sharing_policy) ? " + " : " , ");
if(cnst->sharing_policy)
sum += elem->value * elem->variable->value;
else
sum = MAX(sum,elem->value * elem->variable->value);
}
- sprintf(print_buf, "0) <= %f ('%d')", cnst->bound, cnst->id_int);
- trace_buf = (char*) xbt_realloc(trace_buf, strlen(trace_buf) + strlen(print_buf) + 1);
- strcat(trace_buf, print_buf);
+ buf = buf + "0) <= " + std::to_string(cnst->bound) + " ('" + std::to_string(cnst->id_int) + "')";
- if (!cnst->sharing_policy) {
- sprintf(print_buf, " [MAX-Constraint]");
- trace_buf = (char*) xbt_realloc(trace_buf, strlen(trace_buf) + strlen(print_buf) + 1);
- strcat(trace_buf, print_buf);
+ if (not cnst->sharing_policy) {
+ buf += " [MAX-Constraint]";
}
- XBT_DEBUG("%s", trace_buf);
- trace_buf[0] = '\000';
- xbt_assert(!double_positive(sum - cnst->bound, cnst->bound*sg_maxmin_precision),
+ XBT_DEBUG("%s", buf.c_str());
+ buf.clear();
+ xbt_assert(not double_positive(sum - cnst->bound, cnst->bound * sg_maxmin_precision),
"Incorrect value (%f is not smaller than %f): %g", sum, cnst->bound, sum - cnst->bound);
- //if(double_positive(sum - cnst->bound, cnst->bound*sg_maxmin_precision))
- //XBT_ERROR("Incorrect value (%f is not smaller than %f): %g",sum, cnst->bound, sum - cnst->bound);
+ // if(double_positive(sum - cnst->bound, cnst->bound*sg_maxmin_precision))
+ // XBT_ERROR("Incorrect value (%f is not smaller than %f): %g",sum, cnst->bound, sum - cnst->bound);
}
XBT_DEBUG("Variables");
var = (lmm_variable_t)_var;
if (var->bound > 0) {
XBT_DEBUG("'%d'(%f) : %f (<=%f)", var->id_int, var->weight, var->value, var->bound);
- xbt_assert(!double_positive(var->value - var->bound, var->bound*sg_maxmin_precision),
- "Incorrect value (%f is not smaller than %f", var->value, var->bound);
+ xbt_assert(not double_positive(var->value - var->bound, var->bound * sg_maxmin_precision),
+ "Incorrect value (%f is not smaller than %f", var->value, var->bound);
} else {
XBT_DEBUG("'%d'(%f) : %f", var->id_int, var->weight, var->value);
}
}
-
- free(trace_buf);
}
void lmm_solve(lmm_system_t sys)
{
void *_var, *_cnst, *_cnst_next, *_elem;
- lmm_variable_t var = NULL;
- lmm_constraint_t cnst = NULL;
- lmm_element_t elem = NULL;
- xbt_swag_t cnst_list = NULL;
- xbt_swag_t var_list = NULL;
- xbt_swag_t elem_list = NULL;
+ lmm_variable_t var = nullptr;
+ lmm_constraint_t cnst = nullptr;
+ lmm_element_t elem = nullptr;
+ xbt_swag_t cnst_list = nullptr;
+ xbt_swag_t var_list = nullptr;
+ xbt_swag_t elem_list = nullptr;
double min_usage = -1;
double min_bound = -1;
/* INIT: Collect constraints that actually need to be saturated (i.e remaining and usage are strictly positive)
* into cnst_light_tab. */
cnst->remaining = cnst->bound;
- if (!double_positive(cnst->remaining, cnst->bound*sg_maxmin_precision))
+ if (not double_positive(cnst->remaining, cnst->bound * sg_maxmin_precision))
continue;
cnst->usage = 0;
elem_list = &(cnst->enabled_element_set);
make_elem_active(elem);
simgrid::surf::Action *action = static_cast<simgrid::surf::Action*>(elem->variable->id);
- if (sys->keep_track && !action->is_linked())
+ if (sys->keep_track && not action->is_linked())
sys->keep_track->push_back(*action);
}
}
double_update(&(cnst->remaining), elem->value * var->value, cnst->bound*sg_maxmin_precision);
double_update(&(cnst->usage), elem->value / var->weight, sg_maxmin_precision);
//If the constraint is saturated, remove it from the set of active constraints (light_tab)
- if(!double_positive(cnst->usage,sg_maxmin_precision) ||
- !double_positive(cnst->remaining,cnst->bound*sg_maxmin_precision)) {
+ if (not double_positive(cnst->usage, sg_maxmin_precision) ||
+ not double_positive(cnst->remaining, cnst->bound * sg_maxmin_precision)) {
if (cnst->cnst_light) {
int index = (cnst->cnst_light-cnst_light_tab);
XBT_DEBUG("index: %d \t cnst_light_num: %d \t || usage: %f remaining: %f bound: %f ",
cnst_light_tab[index]=cnst_light_tab[cnst_light_num-1];
cnst_light_tab[index].cnst->cnst_light = &cnst_light_tab[index];
cnst_light_num--;
- cnst->cnst_light = NULL;
+ cnst->cnst_light = nullptr;
}
} else {
cnst->cnst_light->remaining_over_usage = cnst->remaining / cnst->usage;
cnst->usage = MAX(cnst->usage, elem->value / elem->variable->weight);
}
//If the constraint is saturated, remove it from the set of active constraints (light_tab)
- if(!double_positive(cnst->usage,sg_maxmin_precision) ||
- !double_positive(cnst->remaining,cnst->bound*sg_maxmin_precision)) {
+ if (not double_positive(cnst->usage, sg_maxmin_precision) ||
+ not double_positive(cnst->remaining, cnst->bound * sg_maxmin_precision)) {
if(cnst->cnst_light) {
int index = (cnst->cnst_light-cnst_light_tab);
XBT_DEBUG("index: %d \t cnst_light_num: %d \t || \t cnst: %p \t cnst->cnst_light: %p "
cnst_light_tab[index]=cnst_light_tab[cnst_light_num-1];
cnst_light_tab[index].cnst->cnst_light = &cnst_light_tab[index];
cnst_light_num--;
- cnst->cnst_light = NULL;
+ cnst->cnst_light = nullptr;
}
} else {
cnst->cnst_light->remaining_over_usage = cnst->remaining / cnst->usage;
*
* Makes var->bound equal to bound. Whenever this function is called a change is signed in the system. To
* avoid false system changing detection it is a good idea to test (bound != 0) before calling it.
-*/
+ */
void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var, double bound)
{
sys->modified = 1;
return cnstr->concurrency_limit - cnstr->concurrency_current;
}
-/** \brief Measure the minimum concurrency slack across all constraints where var is involved
- *
- * \param The variable to check for
- */
+/** \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 i;
//FIXME MARTIN: Replace by infinite value std::numeric_limits<int>::(max)(), or something better within Simgrid?
//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
- if(!slack && !XBT_LOG_ISENABLED(surf_maxmin, xbt_log_priority_debug))
+ if (not slack && not XBT_LOG_ISENABLED(surf_maxmin, xbt_log_priority_debug))
return 0;
if(minslack>slack)
int i;
lmm_element_t elem;
- xbt_assert(!var->staged_weight,"Staged weight should have been cleared");
+ xbt_assert(not var->staged_weight, "Staged weight should have been cleared");
//Disabling the variable, move to var to list tail. Subtility is: here, we need to call lmm_update_modified_set BEFORE
//moving the last element of var.
xbt_swag_remove(var, &(sys->variable_set));
* And then add it to enabled variables
*/
void lmm_on_disabled_var(lmm_system_t sys, lmm_constraint_t cnstr){
- lmm_element_t elem;
- lmm_element_t nextelem;
- int numelem;
if(cnstr->concurrency_limit<0)
return;
- numelem=xbt_swag_size(&(cnstr->disabled_element_set));
- if(!numelem)
+ int numelem = xbt_swag_size(&(cnstr->disabled_element_set));
+ if (not numelem)
return;
- elem= (lmm_element_t) xbt_swag_getFirst(&(cnstr->disabled_element_set));
+ lmm_element_t elem = (lmm_element_t)xbt_swag_getFirst(&(cnstr->disabled_element_set));
//Cannot use xbt_swag_foreach, because lmm_enable_var will modify disabled_element_set.. within the loop
- while(numelem-- && elem ){
+ while (numelem-- && elem) {
- nextelem = (lmm_element_t) xbt_swag_getNext(elem, cnstr->disabled_element_set.offset);
+ lmm_element_t nextelem = (lmm_element_t)xbt_swag_getNext(elem, cnstr->disabled_element_set.offset);
if (elem->variable->staged_weight>0 ){
//Found a staged variable
*/
void lmm_update_variable_weight(lmm_system_t sys, lmm_variable_t var, double weight)
{
- int minslack;
xbt_assert(weight>=0,"Variable weight should not be negative!");
//Are we enabling this variable?
if (enabling_var){
var->staged_weight = weight;
- minslack=lmm_cnstrs_min_concurrency_slack(var);
- if(minslack<var->concurrency_share){
+ int minslack = lmm_cnstrs_min_concurrency_slack(var);
+ if (minslack < var->concurrency_share) {
XBT_DEBUG("Staging var (instead of enabling) because min concurrency slack %i, with weight %f and concurrency"
" share %i", minslack, weight, var->concurrency_share);
return;
lmm_check_concurrency(sys);
XBT_OUT();
- return;
}
double lmm_get_variable_weight(lmm_variable_t var)
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)) {
+ 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);
}
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)) {
+ if (sys->selective_update_active && not xbt_swag_belongs(cnst, &sys->modified_constraint_set)) {
xbt_swag_insert(cnst, &sys->modified_constraint_set);
lmm_update_modified_set_rec(sys, cnst);
}
}
/**
- * Returns total resource load
+ * Returns resource load (in flop per second, or byte per second, or similar)
*
- * \param cnst the lmm_constraint_t associated to the resource
+ * If the resource is shared (the default case), the load is sum of
+ * resource usage made by every variables located on this resource.
*
- * This is dead code, but we may use it later for debug/trace.
+ * If the resource is not shared (ie in FATPIPE mode), then the the
+ * load is the max (not the sum) of all resource usages located on this resource.
+ * .
+ * \param cnst the lmm_constraint_t associated to the resource
*/
double lmm_constraint_get_usage(lmm_constraint_t cnst) {
double usage = 0.0;
xbt_swag_t elem_list = &(cnst->enabled_element_set);
void *_elem;
- lmm_element_t elem = NULL;
xbt_swag_foreach(_elem, elem_list) {
- elem = (lmm_element_t)_elem;
- if ((elem->value > 0)) {
+ lmm_element_t elem = (lmm_element_t)_elem;
+ if (elem->value > 0) {
if (cnst->sharing_policy)
usage += elem->value * elem->variable->value;
else if (usage < elem->value * elem->variable->value)
- usage = elem->value * elem->variable->value;
+ usage = std::max(usage, elem->value * elem->variable->value);
}
}
return usage;
xbt_swag_foreach(_var, &(sys->variable_set)) {
var= (lmm_variable_t) _var;
- if(!var->cnsts_number)
+ if (not var->cnsts_number)
continue;
elem = &var->cnsts[0];