1 /* Copyright (c) 2013-2017. 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"
8 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
13 void surf_network_model_init_Constant()
15 xbt_assert(surf_network_model == nullptr);
16 surf_network_model = new simgrid::surf::NetworkConstantModel();
17 all_existing_models->push_back(surf_network_model);
22 LinkImpl* NetworkConstantModel::createLink(const std::string& name, double bw, double lat,
23 e_surf_link_sharing_policy_t policy)
26 xbt_die("Refusing to create the link %s: there is no link in the Constant network model. "
27 "Please remove any link from your platform (and switch to routing='None')",
32 double NetworkConstantModel::nextOccuringEvent(double /*now*/)
35 for (Action const& action : *getRunningActionSet()) {
36 const NetworkConstantAction& net_action = static_cast<const NetworkConstantAction&>(action);
37 if (net_action.latency_ > 0 && (min < 0 || net_action.latency_ < min))
38 min = net_action.latency_;
43 void NetworkConstantModel::updateActionsState(double /*now*/, double delta)
45 for (auto it = std::begin(*getRunningActionSet()); it != std::end(*getRunningActionSet());) {
46 NetworkConstantAction& action = static_cast<NetworkConstantAction&>(*it);
47 ++it; // increment iterator here since the following calls to action.finish() may invalidate it
48 if (action.latency_ > 0) {
49 if (action.latency_ > delta) {
50 double_update(&action.latency_, delta, sg_surf_precision);
52 action.latency_ = 0.0;
55 action.updateRemains(action.getCost() * delta / action.initialLatency_);
56 if (action.getMaxDuration() != NO_MAX_DURATION)
57 action.updateMaxDuration(delta);
59 if ((action.getRemainsNoUpdate() <= 0) ||
60 ((action.getMaxDuration() != NO_MAX_DURATION) && (action.getMaxDuration() <= 0))) {
61 action.finish(Action::State::done);
66 Action* NetworkConstantModel::communicate(s4u::Host* src, s4u::Host* dst, double size, double rate)
68 NetworkConstantAction* action = new NetworkConstantAction(this, size, sg_latency_factor);
70 simgrid::s4u::Link::onCommunicate(action, src, dst);
77 NetworkConstantAction::NetworkConstantAction(NetworkConstantModel* model_, double size, double latency)
78 : NetworkAction(model_, size, false), initialLatency_(latency)
81 if (latency_ <= 0.0) {
82 stateSet_ = model_->getDoneActionSet();
83 stateSet_->push_back(*this);
87 NetworkConstantAction::~NetworkConstantAction() = default;