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. */
8 #include "simgrid/Exception.hpp"
9 #include "simgrid/s4u/Engine.hpp"
10 #include "simgrid/s4u/Link.hpp"
11 #include "simgrid/sg_config.hpp"
12 #include "simgrid/simix.hpp"
13 #include "src/surf/SplitDuplexLinkImpl.hpp"
14 #include "src/surf/network_interface.hpp"
15 #include "src/surf/network_wifi.hpp"
17 #include "xbt/parse_units.hpp"
21 template class xbt::Extendable<s4u::Link>;
25 xbt::signal<void(Link&)> Link::on_creation;
26 xbt::signal<void(Link const&)> Link::on_destruction;
27 xbt::signal<void(Link const&)> Link::on_state_change;
28 xbt::signal<void(Link const&)> Link::on_bandwidth_change;
29 xbt::signal<void(kernel::resource::NetworkAction&)> Link::on_communicate;
30 xbt::signal<void(kernel::resource::NetworkAction&, kernel::resource::Action::State)>
31 Link::on_communication_state_change;
33 Link* Link::by_name(const std::string& name)
35 return Engine::get_instance()->link_by_name(name);
38 kernel::resource::LinkImpl* Link::get_impl() const
40 auto* link_impl = dynamic_cast<kernel::resource::LinkImpl*>(pimpl_);
41 xbt_assert(link_impl != nullptr, "Impossible to get a LinkImpl* from link. %s.",
42 (get_sharing_policy() == SharingPolicy::SPLITDUPLEX
43 ? "For a Split-Duplex link, you should call this method to each UP/DOWN member"
44 : "Please report this bug"));
48 Link* Link::by_name_or_null(const std::string& name)
50 return Engine::get_instance()->link_by_name_or_null(name);
53 const std::string& Link::get_name() const
55 return this->pimpl_->get_name();
57 const char* Link::get_cname() const
59 return this->pimpl_->get_cname();
61 bool Link::is_used() const
63 return this->pimpl_->is_used();
66 bool Link::is_shared() const
68 return this->pimpl_->get_sharing_policy() != SharingPolicy::FATPIPE;
71 double Link::get_latency() const
73 return this->pimpl_->get_latency();
76 Link* Link::set_latency(double value)
78 kernel::actor::simcall([this, value] { pimpl_->set_latency(value); });
82 Link* Link::set_latency(const std::string& value)
86 d_value = xbt_parse_get_time("", 0, value, "");
87 } catch (const simgrid::ParseError&) {
88 throw std::invalid_argument(std::string("Impossible to set latency for link: ") + get_name() +
89 std::string(". Invalid value: ") + value);
91 return set_latency(d_value);
94 double Link::get_bandwidth() const
96 return this->pimpl_->get_bandwidth();
99 Link* Link::set_bandwidth(double value)
101 kernel::actor::simcall([this, value] { pimpl_->set_bandwidth(value); });
105 Link* Link::set_sharing_policy(Link::SharingPolicy policy, const NonLinearResourceCb& cb)
107 if (policy == SharingPolicy::SPLITDUPLEX || policy == SharingPolicy::WIFI)
108 throw std::invalid_argument(std::string("Impossible to set wifi or split-duplex for the link: ") + get_name() +
109 std::string(". Use appropriate create function in NetZone."));
111 kernel::actor::simcall([this, policy, &cb] { pimpl_->set_sharing_policy(policy, cb); });
114 Link::SharingPolicy Link::get_sharing_policy() const
116 return this->pimpl_->get_sharing_policy();
119 void Link::set_host_wifi_rate(const s4u::Host* host, int level) const
121 auto* wlink = dynamic_cast<kernel::resource::NetworkWifiLink*>(pimpl_);
122 xbt_assert(wlink != nullptr, "Link %s does not seem to be a wifi link.", get_cname());
123 wlink->set_host_rate(host, level);
126 Link* Link::set_concurrency_limit(int limit)
128 kernel::actor::simcall([this, limit] { pimpl_->set_concurrency_limit(limit); });
132 double Link::get_usage() const
134 return this->pimpl_->get_constraint()->get_usage();
139 kernel::actor::simcall([this]() { this->pimpl_->turn_on(); });
141 void Link::turn_off()
143 kernel::actor::simcall([this]() { this->pimpl_->turn_off(); });
147 kernel::actor::simcall([this]() { this->pimpl_->seal(); });
148 s4u::Link::on_creation(*this); // notify the signal
152 bool Link::is_on() const
154 return this->pimpl_->is_on();
157 Link* Link::set_state_profile(kernel::profile::Profile* profile)
159 xbt_assert(not pimpl_->is_sealed(), "Cannot set a state profile once the Link is sealed");
160 kernel::actor::simcall([this, profile]() { this->pimpl_->set_state_profile(profile); });
164 Link* Link::set_bandwidth_profile(kernel::profile::Profile* profile)
166 xbt_assert(not pimpl_->is_sealed(), "Cannot set a bandwidth profile once the Link is sealed");
167 kernel::actor::simcall([this, profile]() { this->pimpl_->set_bandwidth_profile(profile); });
171 Link* Link::set_latency_profile(kernel::profile::Profile* profile)
173 xbt_assert(not pimpl_->is_sealed(), "Cannot set a latency profile once the Link is sealed");
174 kernel::actor::simcall([this, profile]() { this->pimpl_->set_latency_profile(profile); });
178 const char* Link::get_property(const std::string& key) const
180 return this->pimpl_->get_property(key);
182 Link* Link::set_property(const std::string& key, const std::string& value)
184 kernel::actor::simcall([this, &key, &value] { this->pimpl_->set_property(key, value); });
188 const std::unordered_map<std::string, std::string>* Link::get_properties() const
190 return this->pimpl_->get_properties();
193 Link* Link::set_properties(const std::unordered_map<std::string, std::string>& properties)
195 kernel::actor::simcall([this, &properties] { this->pimpl_->set_properties(properties); });
199 Link* SplitDuplexLink::get_link_up() const
201 const auto* pimpl = dynamic_cast<kernel::resource::SplitDuplexLinkImpl*>(pimpl_);
202 xbt_assert(pimpl, "Requesting link_up from a non split-duplex link: %s", get_cname());
203 return pimpl->get_link_up();
206 Link* SplitDuplexLink::get_link_down() const
208 const auto* pimpl = dynamic_cast<kernel::resource::SplitDuplexLinkImpl*>(pimpl_);
209 xbt_assert(pimpl, "Requesting link_down from a non split-duplex link: %s", get_cname());
210 return pimpl->get_link_down();
213 SplitDuplexLink* SplitDuplexLink::by_name(const std::string& name)
215 return Engine::get_instance()->split_duplex_link_by_name(name);
219 } // namespace simgrid
221 /* **************************** Public C interface *************************** */
223 const char* sg_link_get_name(const_sg_link_t link)
225 return link->get_cname();
228 const char* sg_link_name(const_sg_link_t link) // XBT_ATTRIB_DEPRECATED_v330
230 return sg_link_get_name(link);
233 sg_link_t sg_link_by_name(const char* name)
235 return simgrid::s4u::Link::by_name(name);
238 int sg_link_is_shared(const_sg_link_t link)
240 return link->is_shared();
243 double sg_link_get_bandwidth(const_sg_link_t link)
245 return link->get_bandwidth();
248 void sg_link_set_bandwidth(sg_link_t link, double value)
250 link->set_bandwidth(value);
253 double sg_link_bandwidth(const_sg_link_t link) // XBT_ATTRIB_DEPRECATED_v330
255 return sg_link_get_bandwidth(link);
258 void sg_link_bandwidth_set(sg_link_t link, double value) // XBT_ATTRIB_DEPRECATED_v330
260 sg_link_set_bandwidth(link, value);
263 double sg_link_get_latency(const_sg_link_t link)
265 return link->get_latency();
268 void sg_link_set_latency(sg_link_t link, double value)
270 link->set_latency(value);
273 double sg_link_latency(const_sg_link_t link) // XBT_ATTRIB_DEPRECATED_v330
275 return sg_link_get_latency(link);
278 void sg_link_latency_set(sg_link_t link, double value) // XBT_ATTRIB_DEPRECATED_v330
280 sg_link_set_latency(link, value);
283 void* sg_link_get_data(const_sg_link_t link)
285 return link->get_data();
288 void sg_link_set_data(sg_link_t link, void* data)
290 link->set_data(data);
293 void* sg_link_data(const_sg_link_t link) // XBT_ATTRIB_DEPRECATED_v330
295 return sg_link_get_data(link);
298 void sg_link_data_set(sg_link_t link, void* data) // XBT_ATTRIB_DEPRECATED_v330
300 sg_link_set_data(link, data);
303 size_t sg_link_count()
305 return simgrid::s4u::Engine::get_instance()->get_link_count();
308 sg_link_t* sg_link_list()
310 std::vector<simgrid::s4u::Link*> links = simgrid::s4u::Engine::get_instance()->get_all_links();
312 auto* res = xbt_new(sg_link_t, links.size());
313 std::copy(begin(links), end(links), res);