1 /* Copyright (c) 2013-2018. 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::surf::NetworkConstantModel();
19 all_existing_models->push_back(surf_network_model);
24 LinkImpl* NetworkConstantModel::createLink(const std::string& name, double bw, double lat,
25 e_surf_link_sharing_policy_t policy)
28 xbt_die("Refusing to create the link %s: there is no link in the Constant network model. "
29 "Please remove any link from your platform (and switch to routing='None')",
34 double NetworkConstantModel::next_occuring_event(double /*now*/)
37 for (kernel::resource::Action const& action : *get_running_action_set()) {
38 const NetworkConstantAction& net_action = static_cast<const NetworkConstantAction&>(action);
39 if (net_action.latency_ > 0 && (min < 0 || net_action.latency_ < min))
40 min = net_action.latency_;
45 void NetworkConstantModel::update_actions_state(double /*now*/, double delta)
47 for (auto it = std::begin(*get_running_action_set()); it != std::end(*get_running_action_set());) {
48 NetworkConstantAction& action = static_cast<NetworkConstantAction&>(*it);
49 ++it; // increment iterator here since the following calls to action.finish() may invalidate it
50 if (action.latency_ > 0) {
51 if (action.latency_ > delta) {
52 double_update(&action.latency_, delta, sg_surf_precision);
54 action.latency_ = 0.0;
57 action.update_remains(action.get_cost() * delta / action.initialLatency_);
58 if (action.get_max_duration() != NO_MAX_DURATION)
59 action.update_max_duration(delta);
61 if ((action.get_remains_no_update() <= 0) ||
62 ((action.get_max_duration() != NO_MAX_DURATION) && (action.get_max_duration() <= 0))) {
63 action.finish(kernel::resource::Action::State::done);
68 kernel::resource::Action* NetworkConstantModel::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate)
70 NetworkConstantAction* action = new NetworkConstantAction(this, size, sg_latency_factor);
72 simgrid::s4u::Link::onCommunicate(action, src, dst);
79 NetworkConstantAction::NetworkConstantAction(NetworkConstantModel* model_, double size, double latency)
80 : NetworkAction(model_, size, false), initialLatency_(latency)
84 NetworkConstantAction::set_state(Action::State::done);
87 NetworkConstantAction::~NetworkConstantAction() = default;
89 void NetworkConstantAction::update_remains_lazy(double /*now*/)