-/* Copyright (c) 2017-2021. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2017-2023. 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. */
#include <simgrid/s4u.hpp>
-/* This example shows how to use simgrid::s4u::Engine::get_filtered_hosts() to retrieve
+/* This example shows how to use sg4::Engine::get_filtered_hosts() to retrieve
* all hosts that match a given criteria. This criteria can be specified either with:
* - an inlined callback
* - a boolean function, such as filter_speed_more_than_50Mf() below
*/
XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_engine_filtering, "Messages specific for this s4u example");
+namespace sg4 = simgrid::s4u;
namespace filter {
/* First example of thing that we can use as a filtering criteria: a simple boolean function */
-static bool filter_speed_more_than_50Mf(const simgrid::s4u::Host* host)
+static bool filter_speed_more_than_50Mf(const sg4::Host* host)
{
return host->get_speed() > 50E6;
}
*/
class SingleCore {
public:
- bool operator()(const simgrid::s4u::Host* host) const { return host->get_core_count() == 1; }
+ bool operator()(const sg4::Host* host) const { return host->get_core_count() == 1; }
};
/* This functor is a bit more complex, as it saves the current state when created.
* Then, it allows one to easily retrieve the hosts which frequency changed since the functor creation.
*/
class FrequencyChanged {
- std::map<simgrid::s4u::Host*, int> host_list;
+ std::map<sg4::Host*, unsigned long> host_list;
public:
- explicit FrequencyChanged(const simgrid::s4u::Engine& e)
+ explicit FrequencyChanged(const sg4::Engine& e)
{
- std::vector<simgrid::s4u::Host*> list = e.get_all_hosts();
+ std::vector<sg4::Host*> list = e.get_all_hosts();
for (auto& host : list) {
host_list.insert({host, host->get_pstate()});
}
}
- bool operator()(simgrid::s4u::Host* host) { return host->get_pstate() != host_list.at(host); }
+ bool operator()(sg4::Host* host) { return host->get_pstate() != host_list.at(host); }
- double get_old_speed(simgrid::s4u::Host* host) { return host_list.at(host); }
+ unsigned long get_old_speed_state(sg4::Host* host) { return host_list.at(host); }
};
}
int main(int argc, char* argv[])
{
- simgrid::s4u::Engine e(&argc, argv);
+ sg4::Engine e(&argc, argv);
e.load_platform(argv[1]);
/* Use a lambda function to filter hosts: We only want multicore hosts */
XBT_INFO("Hosts currently registered with this engine: %zu", e.get_host_count());
- std::vector<simgrid::s4u::Host*> list =
- e.get_filtered_hosts([](const simgrid::s4u::Host* host) { return host->get_core_count() > 1; });
+ std::vector<sg4::Host*> list = e.get_filtered_hosts([](const sg4::Host* host) { return host->get_core_count() > 1; });
for (auto& host : list)
XBT_INFO("The following hosts have more than one core: %s", host->get_cname());
for (auto& host : list)
XBT_INFO("The following hosts changed their frequency: %s (from %.1ff to %.1ff)", host->get_cname(),
- host->get_pstate_speed(filter.get_old_speed(host)), host->get_speed());
+ host->get_pstate_speed(filter.get_old_speed_state(host)), host->get_speed());
/* You can also just use any regular function (namespaced on need) to filter */
list = e.get_filtered_hosts(filter::filter_speed_more_than_50Mf);