1 /* Copyright (c) 2013-2019. 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 "src/surf/surf_interface.hpp"
8 #include "surf/surf.hpp"
10 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
15 void surf_network_model_init_Constant()
17 xbt_assert(surf_network_model == nullptr);
18 surf_network_model = new simgrid::kernel::resource::NetworkConstantModel();
25 NetworkConstantModel::NetworkConstantModel() : NetworkModel(Model::UpdateAlgo::FULL)
27 all_existing_models.push_back(this);
30 LinkImpl* NetworkConstantModel::create_link(const std::string& name, const std::vector<double>& /*bandwidth*/,
31 double /*latency*/, s4u::Link::SharingPolicy)
34 xbt_die("Refusing to create the link %s: there is no link in the Constant network model. "
35 "Please remove any link from your platform (and switch to routing='None')",
40 double NetworkConstantModel::next_occuring_event(double /*now*/)
43 for (kernel::resource::Action const& action : *get_started_action_set()) {
44 const auto& net_action = static_cast<const NetworkConstantAction&>(action);
45 if (net_action.latency_ > 0 && (min < 0 || net_action.latency_ < min))
46 min = net_action.latency_;
51 void NetworkConstantModel::update_actions_state(double /*now*/, double delta)
53 for (auto it = std::begin(*get_started_action_set()); it != std::end(*get_started_action_set());) {
54 auto& action = static_cast<NetworkConstantAction&>(*it);
55 ++it; // increment iterator here since the following calls to action.finish() may invalidate it
56 if (action.latency_ > 0) {
57 if (action.latency_ > delta) {
58 double_update(&action.latency_, delta, sg_surf_precision);
60 action.latency_ = 0.0;
63 action.update_remains(action.get_cost() * delta / action.initial_latency_);
64 action.update_max_duration(delta);
66 if ((action.get_remains_no_update() <= 0) ||
67 ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
68 action.finish(Action::State::FINISHED);
73 Action* NetworkConstantModel::communicate(s4u::Host* src, s4u::Host* dst, double size, double)
75 auto* action = new NetworkConstantAction(this, size, sg_latency_factor);
77 s4u::Link::on_communicate(*action, src, dst);
84 NetworkConstantAction::NetworkConstantAction(NetworkConstantModel* model_, double size, double latency)
85 : NetworkAction(model_, 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