/************
* Resource *
************/
-Cpu::Cpu(Model *model, simgrid::s4u::Host *host, xbt_dynar_t speedPerPstate, int core)
+Cpu::Cpu(Model *model, simgrid::s4u::Host *host, std::vector<double> *speedPerPstate, int core)
: Cpu(model, host, nullptr/*constraint*/, speedPerPstate, core)
{
}
Cpu::Cpu(Model *model, simgrid::s4u::Host *host, lmm_constraint_t constraint,
- xbt_dynar_t speedPerPstate, int core)
+ std::vector<double> * speedPerPstate, int core)
: Resource(model, host->name().c_str(), constraint)
, coresAmount_(core)
, host_(host)
{
xbt_assert(core > 0, "Host %s must have at least one core, not 0.", host->name().c_str());
- speed_.peak = xbt_dynar_get_as(speedPerPstate, 0/*pstate*/, double);
+ speed_.peak = speedPerPstate->front();
speed_.scale = 1;
host->pimpl_cpu = this;
xbt_assert(speed_.scale > 0, "Speed of host %s must be >0", host->name().c_str());
// Copy the power peak array:
- speedPerPstate_ = xbt_dynar_new(sizeof(double), nullptr);
- unsigned long n = xbt_dynar_length(speedPerPstate);
- for (unsigned long i = 0; i != n; ++i) {
- double value = xbt_dynar_get_as(speedPerPstate, i, double);
- xbt_dynar_push(speedPerPstate_, &value);
+ for (double value : *speedPerPstate) {
+ speedPerPstate_.push_back(value);
}
xbt_assert(model == surf_cpu_model_pm || core==1, "Currently, VM cannot be multicore");
-
- if (model->getUpdateMechanism() != UM_UNDEFINED) {
- p_constraintCore = xbt_new(lmm_constraint_t, core);
- p_constraintCoreId = xbt_new(void*, core);
-
- for (int i = 0; i < core; i++) {
- /* just for a unique id, never used as a string. */
- p_constraintCoreId[i] = bprintf("%s:%i", host->name().c_str(), i);
- p_constraintCore[i] = lmm_constraint_new(model->getMaxminSystem(), p_constraintCoreId[i], speed_.scale * speed_.peak);
- }
- }
}
-Cpu::~Cpu()
-{
- if (p_constraintCoreId){
- for (int i = 0; i < coresAmount_; i++)
- xbt_free(p_constraintCoreId[i]);
- xbt_free(p_constraintCore);
- }
- xbt_free(p_constraintCoreId);
- xbt_dynar_free(&speedPerPstate_);
-}
+Cpu::~Cpu() = default;
double Cpu::getPstateSpeedCurrent()
{
int Cpu::getNbPStates()
{
- return xbt_dynar_length(speedPerPstate_);
+ return speedPerPstate_.size();
}
void Cpu::setPState(int pstate_index)
{
- xbt_dynar_t plist = speedPerPstate_;
- xbt_assert(pstate_index <= (int)xbt_dynar_length(plist),
- "Invalid parameters for CPU %s (pstate %d > length of pstates %d)", getName(), pstate_index, (int)xbt_dynar_length(plist));
+ xbt_assert(pstate_index <= static_cast<int>(speedPerPstate_.size()),
+ "Invalid parameters for CPU %s (pstate %d > length of pstates %d)", getName(), pstate_index,
+ static_cast<int>(speedPerPstate_.size()));
- double new_peak_speed = xbt_dynar_get_as(plist, pstate_index, double);
+ double new_peak_speed = speedPerPstate_[pstate_index];
pstate_ = pstate_index;
speed_.peak = new_peak_speed;
double Cpu::getPstateSpeed(int pstate_index)
{
- xbt_dynar_t plist = speedPerPstate_;
- xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
+ xbt_assert((pstate_index <= static_cast<int>(speedPerPstate_.size())), "Invalid parameters (pstate index out of bounds)");
- return xbt_dynar_get_as(plist, pstate_index, double);
+ return speedPerPstate_[pstate_index];
}
double Cpu::getSpeed(double load)
lastValue_ = lmm_variable_getvalue(getVariable());
}
-/*
- *
- * This function formulates a constraint problem that pins a given task to
- * particular cores. Currently, it is possible to pin a task to an exactly one
- * specific core. The system links the variable object of the task to the
- * per-core constraint object.
- *
- * But, the taskset command on Linux takes a mask value specifying a CPU
- * affinity setting of a given task. If the mask value is 0x03, the given task
- * will be executed on the first core (CPU0) or the second core (CPU1) on the
- * given PM. The schedular will determine appropriate placements of tasks,
- * considering given CPU affinities and task activities.
- *
- * How should the system formulate constraint problems for an affinity to
- * multiple cores?
- *
- * The cpu argument must be the host where the task is being executed. The
- * action object does not have the information about the location where the
- * action is being executed.
- */
-void CpuAction::setAffinity(Cpu *cpu, unsigned long mask)
-{
- lmm_variable_t var_obj = getVariable();
- XBT_IN("(%p,%lx)", this, mask);
-
- {
- unsigned long nbits = 0;
-
- /* FIXME: There is much faster algorithms doing this. */
- for (int i = 0; i < cpu->coresAmount_; i++) {
- unsigned long has_affinity = (1UL << i) & mask;
- if (has_affinity)
- nbits += 1;
- }
-
- xbt_assert(nbits <= 1, "Affinity mask cannot span over multiple cores.");
- }
-
- for (int i = 0; i < cpu->coresAmount_; i++) {
- XBT_DEBUG("clear affinity %p to cpu-%d@%s", this, i, cpu->getName());
- lmm_shrink(cpu->getModel()->getMaxminSystem(), cpu->p_constraintCore[i], var_obj);
-
- unsigned long has_affinity = (1UL << i) & mask;
- if (has_affinity) {
- /* This function only accepts an affinity setting on the host where the
- * task is now running. In future, a task might move to another host.
- * But, at this moment, this function cannot take an affinity setting on
- * that future host.
- *
- * It might be possible to extend the code to allow this function to
- * accept affinity settings on a future host. We might be able to assign
- * zero to elem->value to maintain such inactive affinity settings in the
- * system. But, this will make the system complex. */
- XBT_DEBUG("set affinity %p to cpu-%d@%s", this, i, cpu->getName());
- lmm_expand(cpu->getModel()->getMaxminSystem(), cpu->p_constraintCore[i], var_obj, 1.0);
- }
- }
-
- if (cpu->getModel()->getUpdateMechanism() == UM_LAZY) {
- /* FIXME (hypervisor): Do we need to do something for the LAZY mode? */
- }
- XBT_OUT();
-}
-
simgrid::xbt::signal<void(simgrid::surf::CpuAction*, Action::State)> CpuAction::onStateChange;
void CpuAction::setState(Action::State state){