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 <simgrid/Exception.hpp>
7 #include <simgrid/s4u/Engine.hpp>
8 #include <simgrid/s4u/Link.hpp>
9 #include <simgrid/simix.hpp>
10 #include <xbt/config.hpp>
11 #include <xbt/parse_units.hpp>
13 #include "src/surf/SplitDuplexLinkImpl.hpp"
14 #include "src/surf/network_interface.hpp"
15 #include "src/surf/network_wifi.hpp"
19 template class xbt::Extendable<s4u::Link>;
23 xbt::signal<void(Link&)> Link::on_creation;
24 xbt::signal<void(Link const&)> Link::on_destruction;
25 xbt::signal<void(Link const&)> Link::on_state_change;
26 xbt::signal<void(Link const&)> Link::on_bandwidth_change;
27 xbt::signal<void(kernel::resource::NetworkAction&)> Link::on_communicate;
28 xbt::signal<void(kernel::resource::NetworkAction&, kernel::resource::Action::State)>
29 Link::on_communication_state_change;
31 Link* Link::by_name(const std::string& name)
33 return Engine::get_instance()->link_by_name(name);
36 kernel::resource::LinkImpl* Link::get_impl() const
38 auto* link_impl = dynamic_cast<kernel::resource::LinkImpl*>(pimpl_);
39 xbt_assert(link_impl != nullptr, "Impossible to get a LinkImpl* from link. %s.",
40 (get_sharing_policy() == SharingPolicy::SPLITDUPLEX
41 ? "For a Split-Duplex link, you should call this method to each UP/DOWN member"
42 : "Please report this bug"));
46 Link* Link::by_name_or_null(const std::string& name)
48 return Engine::get_instance()->link_by_name_or_null(name);
51 const std::string& Link::get_name() const
53 return this->pimpl_->get_name();
55 const char* Link::get_cname() const
57 return this->pimpl_->get_cname();
59 bool Link::is_used() const
61 return this->pimpl_->is_used();
64 bool Link::is_shared() const
66 return this->pimpl_->get_sharing_policy() != SharingPolicy::FATPIPE;
69 double Link::get_latency() const
71 return this->pimpl_->get_latency();
74 Link* Link::set_latency(double value)
76 kernel::actor::simcall([this, value] { pimpl_->set_latency(value); });
80 Link* Link::set_latency(const std::string& value)
84 d_value = xbt_parse_get_time("", 0, value, "");
85 } catch (const simgrid::ParseError&) {
86 throw std::invalid_argument(std::string("Impossible to set latency for link: ") + get_name() +
87 std::string(". Invalid value: ") + value);
89 return set_latency(d_value);
92 double Link::get_bandwidth() const
94 return this->pimpl_->get_bandwidth();
97 Link* Link::set_bandwidth(double value)
99 kernel::actor::simcall([this, value] { pimpl_->set_bandwidth(value); });
103 Link* Link::set_sharing_policy(Link::SharingPolicy policy, const NonLinearResourceCb& cb)
105 if (policy == SharingPolicy::SPLITDUPLEX || policy == SharingPolicy::WIFI)
106 throw std::invalid_argument(std::string("Impossible to set wifi or split-duplex for the link: ") + get_name() +
107 std::string(". Use appropriate create function in NetZone."));
109 kernel::actor::simcall([this, policy, &cb] { pimpl_->set_sharing_policy(policy, cb); });
112 Link::SharingPolicy Link::get_sharing_policy() const
114 return this->pimpl_->get_sharing_policy();
117 void Link::set_host_wifi_rate(const s4u::Host* host, int level) const
119 auto* wlink = dynamic_cast<kernel::resource::NetworkWifiLink*>(pimpl_);
120 xbt_assert(wlink != nullptr, "Link %s does not seem to be a wifi link.", get_cname());
121 wlink->set_host_rate(host, level);
124 Link* Link::set_concurrency_limit(int limit)
126 kernel::actor::simcall([this, limit] { pimpl_->set_concurrency_limit(limit); });
130 double Link::get_usage() const
132 return this->pimpl_->get_constraint()->get_usage();
137 kernel::actor::simcall([this]() { this->pimpl_->turn_on(); });
139 void Link::turn_off()
141 kernel::actor::simcall([this]() { this->pimpl_->turn_off(); });
145 kernel::actor::simcall([this]() { this->pimpl_->seal(); });
146 s4u::Link::on_creation(*this); // notify the signal
150 bool Link::is_on() const
152 return this->pimpl_->is_on();
155 Link* Link::set_state_profile(kernel::profile::Profile* profile)
157 xbt_assert(not pimpl_->is_sealed(), "Cannot set a state profile once the Link is sealed");
158 kernel::actor::simcall([this, profile]() { this->pimpl_->set_state_profile(profile); });
162 Link* Link::set_bandwidth_profile(kernel::profile::Profile* profile)
164 xbt_assert(not pimpl_->is_sealed(), "Cannot set a bandwidth profile once the Link is sealed");
165 kernel::actor::simcall([this, profile]() { this->pimpl_->set_bandwidth_profile(profile); });
169 Link* Link::set_latency_profile(kernel::profile::Profile* profile)
171 xbt_assert(not pimpl_->is_sealed(), "Cannot set a latency profile once the Link is sealed");
172 kernel::actor::simcall([this, profile]() { this->pimpl_->set_latency_profile(profile); });
176 const char* Link::get_property(const std::string& key) const
178 return this->pimpl_->get_property(key);
180 Link* Link::set_property(const std::string& key, const std::string& value)
182 kernel::actor::simcall([this, &key, &value] { this->pimpl_->set_property(key, value); });
186 const std::unordered_map<std::string, std::string>* Link::get_properties() const
188 return this->pimpl_->get_properties();
191 Link* Link::set_properties(const std::unordered_map<std::string, std::string>& properties)
193 kernel::actor::simcall([this, &properties] { this->pimpl_->set_properties(properties); });
197 Link* SplitDuplexLink::get_link_up() const
199 const auto* pimpl = dynamic_cast<kernel::resource::SplitDuplexLinkImpl*>(pimpl_);
200 xbt_assert(pimpl, "Requesting link_up from a non split-duplex link: %s", get_cname());
201 return pimpl->get_link_up();
204 Link* SplitDuplexLink::get_link_down() const
206 const auto* pimpl = dynamic_cast<kernel::resource::SplitDuplexLinkImpl*>(pimpl_);
207 xbt_assert(pimpl, "Requesting link_down from a non split-duplex link: %s", get_cname());
208 return pimpl->get_link_down();
211 SplitDuplexLink* SplitDuplexLink::by_name(const std::string& name)
213 return Engine::get_instance()->split_duplex_link_by_name(name);
217 } // namespace simgrid
219 /* **************************** Public C interface *************************** */
221 const char* sg_link_get_name(const_sg_link_t link)
223 return link->get_cname();
226 const char* sg_link_name(const_sg_link_t link) // XBT_ATTRIB_DEPRECATED_v330
228 return sg_link_get_name(link);
231 sg_link_t sg_link_by_name(const char* name)
233 return simgrid::s4u::Link::by_name(name);
236 int sg_link_is_shared(const_sg_link_t link)
238 return link->is_shared();
241 double sg_link_get_bandwidth(const_sg_link_t link)
243 return link->get_bandwidth();
246 void sg_link_set_bandwidth(sg_link_t link, double value)
248 link->set_bandwidth(value);
251 double sg_link_bandwidth(const_sg_link_t link) // XBT_ATTRIB_DEPRECATED_v330
253 return sg_link_get_bandwidth(link);
256 void sg_link_bandwidth_set(sg_link_t link, double value) // XBT_ATTRIB_DEPRECATED_v330
258 sg_link_set_bandwidth(link, value);
261 double sg_link_get_latency(const_sg_link_t link)
263 return link->get_latency();
266 void sg_link_set_latency(sg_link_t link, double value)
268 link->set_latency(value);
271 double sg_link_latency(const_sg_link_t link) // XBT_ATTRIB_DEPRECATED_v330
273 return sg_link_get_latency(link);
276 void sg_link_latency_set(sg_link_t link, double value) // XBT_ATTRIB_DEPRECATED_v330
278 sg_link_set_latency(link, value);
281 void* sg_link_get_data(const_sg_link_t link)
283 return link->get_data();
286 void sg_link_set_data(sg_link_t link, void* data)
288 link->set_data(data);
291 void* sg_link_data(const_sg_link_t link) // XBT_ATTRIB_DEPRECATED_v330
293 return sg_link_get_data(link);
296 void sg_link_data_set(sg_link_t link, void* data) // XBT_ATTRIB_DEPRECATED_v330
298 sg_link_set_data(link, data);
301 size_t sg_link_count()
303 return simgrid::s4u::Engine::get_instance()->get_link_count();
306 sg_link_t* sg_link_list()
308 std::vector<simgrid::s4u::Link*> links = simgrid::s4u::Engine::get_instance()->get_all_links();
310 auto* res = xbt_new(sg_link_t, links.size());
311 std::copy(begin(links), end(links), res);