1 /* Copyright (c) 2013-2021. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "network_constant.hpp"
7 #include "simgrid/kernel/routing/NetZoneImpl.hpp"
8 #include "simgrid/s4u/Engine.hpp"
9 #include "src/kernel/EngineImpl.hpp"
10 #include "src/surf/surf_interface.hpp"
11 #include "surf/surf.hpp"
13 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(res_network);
18 void surf_network_model_init_Constant()
20 auto net_model = std::make_shared<simgrid::kernel::resource::NetworkConstantModel>();
21 simgrid::kernel::EngineImpl::get_instance()->add_model(simgrid::kernel::resource::Model::Type::NETWORK, net_model,
23 simgrid::s4u::Engine::get_instance()->get_netzone_root()->get_impl()->set_network_model(net_model);
30 LinkImpl* NetworkConstantModel::create_link(const std::string& name, const std::vector<double>& /*bandwidth*/,
31 s4u::Link::SharingPolicy)
33 xbt_die("Refusing to create the link %s: there is no link in the Constant network model. "
34 "Please remove any link from your platform (and switch to routing='None')",
39 double NetworkConstantModel::next_occurring_event(double /*now*/)
42 for (kernel::resource::Action const& action : *get_started_action_set()) {
43 const auto& net_action = static_cast<const NetworkConstantAction&>(action);
44 if (net_action.latency_ > 0 && (min < 0 || net_action.latency_ < min))
45 min = net_action.latency_;
50 void NetworkConstantModel::update_actions_state(double /*now*/, double delta)
52 for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
53 auto& action = static_cast<NetworkConstantAction&>(*it);
54 ++it; // increment iterator here since the following calls to action.finish() may invalidate it
55 if (action.latency_ > 0) {
56 if (action.latency_ > delta) {
57 double_update(&action.latency_, delta, sg_surf_precision);
59 action.latency_ = 0.0;
62 action.update_remains(action.get_cost() * delta / action.initial_latency_);
63 action.update_max_duration(delta);
65 if ((action.get_remains_no_update() <= 0) ||
66 ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
67 action.finish(Action::State::FINISHED);
72 Action* NetworkConstantModel::communicate(s4u::Host* src, s4u::Host* dst, double size, double)
74 auto* action = new NetworkConstantAction(this, *src, *dst, size, sg_latency_factor);
76 s4u::Link::on_communicate(*action);
83 NetworkConstantAction::NetworkConstantAction(NetworkConstantModel* model_, s4u::Host& src, s4u::Host& dst, double size,
85 : NetworkAction(model_, src, dst, size, false), initial_latency_(latency)
89 NetworkConstantAction::set_state(Action::State::FINISHED);
92 NetworkConstantAction::~NetworkConstantAction() = default;
94 void NetworkConstantAction::update_remains_lazy(double /*now*/)
99 } // namespace resource
100 } // namespace kernel
101 } // namespace simgrid