+++ /dev/null
-/* Copyright (c) 2013-2023. 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 <simgrid/kernel/routing/NetZoneImpl.hpp>
-#include <simgrid/s4u/Engine.hpp>
-
-#include "src/kernel/EngineImpl.hpp"
-#include "src/surf/network_constant.hpp"
-#include "src/surf/surf_interface.hpp"
-
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_network);
-
-/*********
- * Model *
- *********/
-SIMGRID_REGISTER_NETWORK_MODEL(
- Constant,
- "Simplistic network model where all communication take a constant time (one second). This model "
- "provides the lowest realism, but is (marginally) faster. It is mostly useful when studying theoretical "
- "distributed algorithms where the network is usually abstracted away.",
- []() {
- auto net_model = std::make_shared<simgrid::kernel::resource::NetworkConstantModel>("Network_Constant");
- auto* engine = simgrid::kernel::EngineImpl::get_instance();
- engine->add_model(net_model);
- engine->get_netzone_root()->set_network_model(net_model);
- });
-
-namespace simgrid::kernel::resource {
-
-StandardLinkImpl* NetworkConstantModel::create_link(const std::string& name, const std::vector<double>& /*bandwidth*/)
-{
- xbt_die("Refusing to create the link %s: there is no link in the Constant network model. "
- "Please remove any link from your platform (and switch to routing='None')",
- name.c_str());
- return nullptr;
-}
-
-StandardLinkImpl* NetworkConstantModel::create_wifi_link(const std::string& name, const std::vector<double>& bandwidths)
-{
- return create_link(name, bandwidths);
-}
-
-double NetworkConstantModel::next_occurring_event(double /*now*/)
-{
- double min = -1.0;
- for (Action const& action : *get_started_action_set()) {
- const auto& net_action = static_cast<const NetworkConstantAction&>(action);
- if (net_action.latency_ > 0 && (min < 0 || net_action.latency_ < min))
- min = net_action.latency_;
- }
- return min;
-}
-
-void NetworkConstantModel::update_actions_state(double /*now*/, double delta)
-{
- for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
- auto& action = static_cast<NetworkConstantAction&>(*it);
- ++it; // increment iterator here since the following calls to action.finish() may invalidate it
- if (action.latency_ > 0) {
- if (action.latency_ > delta) {
- double_update(&action.latency_, delta, sg_precision_timing);
- } else {
- action.latency_ = 0.0;
- }
- }
- action.update_remains(action.get_cost() * delta / get_latency_factor());
- action.update_max_duration(delta);
-
- if ((action.get_remains_no_update() <= 0) ||
- ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
- action.finish(Action::State::FINISHED);
- }
- }
-}
-
-Action* NetworkConstantModel::communicate(s4u::Host* src, s4u::Host* dst, double size, double /*rate*/,
- bool /*streamed*/)
-{
- return (new NetworkConstantAction(this, *src, *dst, size));
-}
-
-/**********
- * Action *
- **********/
-NetworkConstantAction::NetworkConstantAction(NetworkConstantModel* model_, s4u::Host& src, s4u::Host& dst, double size)
- : NetworkAction(model_, src, dst, size, false)
-{
- latency_ = model_->get_latency_factor();
- if (latency_ <= 0.0)
- set_state(Action::State::FINISHED);
-}
-
-void NetworkConstantAction::update_remains_lazy(double /*now*/)
-{
- THROW_IMPOSSIBLE;
-}
-
-} // namespace simgrid::kernel::resource