+++ /dev/null
-/* Copyright (c) 2013-2021. The SimGrid Team. All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "src/surf/cpu_interface.hpp"
-#include "src/kernel/resource/profile/Profile.hpp"
-#include "src/surf/cpu_ti.hpp"
-#include "src/surf/surf_interface.hpp"
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(res_cpu, ker_resource, "CPU resource, fueling execution activites");
-
-namespace simgrid {
-namespace kernel {
-namespace resource {
-
-/*********
- * Model *
- *********/
-
-void CpuModel::update_actions_state_lazy(double now, double /*delta*/)
-{
- while (not get_action_heap().empty() && double_equals(get_action_heap().top_date(), now, sg_surf_precision)) {
- auto* action = static_cast<CpuAction*>(get_action_heap().pop());
- XBT_DEBUG("Something happened to action %p", action);
-
- action->finish(kernel::resource::Action::State::FINISHED);
- XBT_DEBUG("Action %p finished", action);
- }
-}
-
-void CpuModel::update_actions_state_full(double /*now*/, double delta)
-{
- for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
- auto& action = static_cast<CpuAction&>(*it);
- ++it; // increment iterator here since the following calls to action.finish() may invalidate it
-
- action.update_remains(action.get_rate() * delta);
- action.update_max_duration(delta);
-
- if (((action.get_remains_no_update() <= 0) && (action.get_variable()->get_penalty() > 0)) ||
- ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
- action.finish(Action::State::FINISHED);
- }
- }
-}
-
-/************
- * Resource *
- ************/
-CpuImpl::CpuImpl(s4u::Host* host, const std::vector<double>& speed_per_pstate)
- : Resource_T(host->get_cname()), piface_(host), speed_per_pstate_(speed_per_pstate)
-{
- speed_.scale = 1;
- speed_.peak = speed_per_pstate_.front();
- host->set_cpu(this);
-}
-
-void CpuImpl::reset_vcpu(CpuImpl* that)
-{
- this->pstate_ = that->pstate_;
- this->speed_ = that->speed_;
- this->speed_per_pstate_.clear();
- this->speed_per_pstate_.assign(that->speed_per_pstate_.begin(), that->speed_per_pstate_.end());
-}
-
-CpuImpl* CpuImpl::set_pstate(unsigned long pstate_index)
-{
- xbt_assert(
- pstate_index <= speed_per_pstate_.size(),
- "Invalid parameters for CPU %s (pstate %lu > length of pstates %d). Please fix your platform file, or your "
- "call to change the pstate.",
- get_cname(), pstate_index, static_cast<int>(speed_per_pstate_.size()));
-
- double new_peak_speed = speed_per_pstate_[pstate_index];
- pstate_ = pstate_index;
- speed_.peak = new_peak_speed;
-
- on_speed_change();
- return this;
-}
-
-CpuImpl* CpuImpl::set_pstate_speed(const std::vector<double>& speed_per_state)
-{
- xbt_assert(not speed_per_state.empty(), "CPU %s: processor speed vector cannot be empty", get_cname());
- xbt_assert(not is_sealed(), "CPU %s: processor speed cannot be changed once CPU has been sealed", get_cname());
- speed_per_pstate_ = speed_per_state;
- speed_.peak = speed_per_pstate_.front();
- return this;
-}
-
-double CpuImpl::get_pstate_peak_speed(unsigned long pstate_index) const
-{
- xbt_assert((pstate_index <= speed_per_pstate_.size()), "Invalid parameters (pstate index out of bounds)");
-
- return speed_per_pstate_[pstate_index];
-}
-
-void CpuImpl::on_speed_change()
-{
- s4u::Host::on_speed_change(*piface_);
-}
-
-CpuImpl* CpuImpl::set_core_count(int core_count)
-{
- xbt_assert(not is_sealed(), "Core count cannot be changed once CPU has been sealed");
- xbt_assert(core_count > 0, "Host %s must have at least one core, not 0.", piface_->get_cname());
- if (dynamic_cast<CpuTiModel*>(get_model()) != nullptr)
- xbt_assert(core_count == 1, "Multi-core not handled by this model yet");
-
- core_count_ = core_count;
- return this;
-}
-
-void CpuImpl::apply_sharing_policy_cfg() const
-{
- if (!get_constraint())
- return;
-
- kernel::lmm::Constraint::SharingPolicy lmm_policy = kernel::lmm::Constraint::SharingPolicy::SHARED;
- if (sharing_policy_ == s4u::Host::SharingPolicy::NONLINEAR)
- lmm_policy = kernel::lmm::Constraint::SharingPolicy::NONLINEAR;
-
- get_constraint()->set_sharing_policy(lmm_policy, sharing_policy_cb_);
-}
-
-void CpuImpl::set_sharing_policy(s4u::Host::SharingPolicy policy, const s4u::NonLinearResourceCb& cb)
-{
- xbt_assert(dynamic_cast<CpuTiModel*>(get_model()) == nullptr, "Cannot change sharing policy with CPU:TI model");
- sharing_policy_ = policy;
- sharing_policy_cb_ = cb;
- apply_sharing_policy_cfg();
-}
-
-CpuImpl* CpuImpl::set_speed_profile(kernel::profile::Profile* profile)
-{
- if (profile) {
- xbt_assert(speed_.event == nullptr, "Cannot set a second speed trace to Host %s", piface_->get_cname());
- speed_.event = profile->schedule(&profile::future_evt_set, this);
- }
- return this;
-}
-
-void CpuImpl::seal()
-{
- if (is_sealed()) {
- return;
- }
- lmm::System* lmm = get_model()->get_maxmin_system();
- if (dynamic_cast<CpuTiModel*>(get_model()) == nullptr)
- this->set_constraint(lmm->constraint_new(this, core_count_ * speed_per_pstate_.front()));
- apply_sharing_policy_cfg();
- Resource::seal();
-}
-
-/**********
- * Action *
- **********/
-
-void CpuAction::update_remains_lazy(double now)
-{
- xbt_assert(get_state_set() == get_model()->get_started_action_set(),
- "You're updating an action that is not running.");
- xbt_assert(get_sharing_penalty() > 0, "You're updating an action that seems suspended.");
-
- double delta = now - get_last_update();
-
- if (get_remains_no_update() > 0) {
- XBT_DEBUG("Updating action(%p): remains was %f, last_update was: %f", this, get_remains_no_update(),
- get_last_update());
- update_remains(get_last_value() * delta);
-
- XBT_DEBUG("Updating action(%p): remains is now %f", this, get_remains_no_update());
- }
-
- set_last_update();
- set_last_value(get_rate());
-}
-
-xbt::signal<void(CpuAction const&, Action::State)> CpuAction::on_state_change;
-
-void CpuAction::suspend()
-{
- Action::State previous = get_state();
- on_state_change(*this, previous);
- Action::suspend();
-}
-
-void CpuAction::resume()
-{
- Action::State previous = get_state();
- on_state_change(*this, previous);
- Action::resume();
-}
-
-void CpuAction::set_state(Action::State state)
-{
- Action::State previous = get_state();
- Action::set_state(state);
- on_state_change(*this, previous);
-}
-
-/** @brief returns a list of all CPUs that this action is using */
-std::list<CpuImpl*> CpuAction::cpus() const
-{
- std::list<CpuImpl*> retlist;
- int llen = get_variable()->get_number_of_constraint();
-
- for (int i = 0; i < llen; i++) {
- /* Beware of composite actions: ptasks put links and cpus together */
- // extra pb: we cannot dynamic_cast from void*...
- Resource* resource = get_variable()->get_constraint(i)->get_id();
- auto* cpu = dynamic_cast<CpuImpl*>(resource);
- if (cpu != nullptr)
- retlist.push_back(cpu);
- }
-
- return retlist;
-}
-} // namespace resource
-} // namespace kernel
-} // namespace simgrid
