-/* Copyright (c) 2013-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2013-2021. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#ifndef NETWORK_INTERFACE_CPP_
#define NETWORK_INTERFACE_CPP_
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf, "Logging specific to the SURF network module");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(res_network, ker_resource, "Network resources, that fuels communications");
/*********
* Model *
*********/
-simgrid::kernel::resource::NetworkModel* surf_network_model = nullptr;
-
namespace simgrid {
namespace kernel {
namespace resource {
/** @brief Command-line option 'network/TCP-gamma' -- see @ref options_model_network_gamma */
simgrid::config::Flag<double> NetworkModel::cfg_tcp_gamma(
- "network/TCP-gamma", {"network/TCP_gamma"},
+ "network/TCP-gamma",
"Size of the biggest TCP window (cat /proc/sys/net/ipv4/tcp_[rw]mem for recv/send window; "
"Use the last given value, which is the max window size)",
4194304.0);
* Resource *
************/
-LinkImpl::LinkImpl(NetworkModel* model, const std::string& name, lmm::Constraint* constraint)
- : Resource(model, name, constraint), piface_(this)
+LinkImpl::LinkImpl(const std::string& name) : Resource_T(name), piface_(this)
{
if (name != "__loopback__")
xbt_assert(not s4u::Link::by_name_or_null(name), "Link '%s' declared several times in the platform.", name.c_str());
XBT_DEBUG("Create link '%s'", name.c_str());
}
-/** @brief use destroy() instead of this destructor */
-LinkImpl::~LinkImpl()
-{
- xbt_assert(currently_destroying_, "Don't delete Links directly. Call destroy() instead.");
-}
/** @brief Fire the required callbacks and destroy the object
*
* Don't delete directly a Link, call l->destroy() instead.
*/
void LinkImpl::destroy()
{
- if (not currently_destroying_) {
- currently_destroying_ = true;
- s4u::Link::on_destruction(this->piface_);
- delete this;
- }
+ s4u::Link::on_destruction(this->piface_);
+ delete this;
}
-bool LinkImpl::is_used()
+bool LinkImpl::is_used() const
{
return get_model()->get_maxmin_system()->constraint_used(get_constraint());
}
-double LinkImpl::get_latency()
+double LinkImpl::get_latency() const
{
return latency_.peak * latency_.scale;
}
-double LinkImpl::get_bandwidth()
+double LinkImpl::get_bandwidth() const
{
return bandwidth_.peak * bandwidth_.scale;
}
+LinkImpl* LinkImpl::set_sharing_policy(s4u::Link::SharingPolicy policy)
+{
+ get_constraint()->set_sharing_policy(policy);
+ return this;
+}
s4u::Link::SharingPolicy LinkImpl::get_sharing_policy() const
{
return get_constraint()->get_sharing_policy();
}
+void LinkImpl::latency_check(double latency) const
+{
+ static double last_warned_latency = sg_surf_precision;
+ if (latency != 0.0 && latency < last_warned_latency) {
+ XBT_WARN("Latency for link %s is smaller than surf/precision (%g < %g)."
+ " For more accuracy, consider setting \"--cfg=surf/precision:%g\".",
+ get_cname(), latency, sg_surf_precision, latency);
+ last_warned_latency = latency;
+ }
+}
+
void LinkImpl::turn_on()
{
if (not is_on()) {
Resource::turn_off();
s4u::Link::on_state_change(this->piface_);
- const kernel::lmm::Variable* var;
const kernel::lmm::Element* elem = nullptr;
double now = surf_get_clock();
- while ((var = get_constraint()->get_variable(&elem))) {
+ while (const auto* var = get_constraint()->get_variable(&elem)) {
Action* action = var->get_id();
if (action->get_state() == Action::State::INITED || action->get_state() == Action::State::STARTED) {
action->set_finish_time(now);
}
}
+void LinkImpl::seal()
+{
+ xbt_assert(this->get_model(), "Cannot seal Link(%s) without setting the Network model first", this->get_cname());
+ Resource::seal();
+ s4u::Link::on_creation(*get_iface());
+}
+
void LinkImpl::on_bandwidth_change() const
{
s4u::Link::on_bandwidth_change(this->piface_);
}
-void LinkImpl::set_bandwidth_profile(profile::Profile* profile)
+LinkImpl* LinkImpl::set_bandwidth_profile(profile::Profile* profile)
{
- xbt_assert(bandwidth_.event == nullptr, "Cannot set a second bandwidth profile to Link %s", get_cname());
- bandwidth_.event = profile->schedule(&profile::future_evt_set, this);
+ if (profile) {
+ xbt_assert(bandwidth_.event == nullptr, "Cannot set a second bandwidth profile to Link %s", get_cname());
+ bandwidth_.event = profile->schedule(&profile::future_evt_set, this);
+ }
+ return this;
}
-void LinkImpl::set_latency_profile(profile::Profile* profile)
+LinkImpl* LinkImpl::set_latency_profile(profile::Profile* profile)
{
- xbt_assert(latency_.event == nullptr, "Cannot set a second latency profile to Link %s", get_cname());
- latency_.event = profile->schedule(&profile::future_evt_set, this);
+ if (profile) {
+ xbt_assert(latency_.event == nullptr, "Cannot set a second latency profile to Link %s", get_cname());
+ latency_.event = profile->schedule(&profile::future_evt_set, this);
+ }
+ return this;
}
/**********
