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/* Copyright (c) 2017-2025. 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"
#include <string>
#include <unordered_map>
XBT_LOG_NEW_DEFAULT_CATEGORY(disk_test, "Messages specific for this simulation");
namespace sg4 = simgrid::s4u;
static void host()
{
/* -Add an extra disk in a programmatic way */
sg4::Host::current()->add_disk("Disk3", /*read bandwidth*/ 9.6e7, /*write bandwidth*/ 6.4e7)->seal();
/* - Display information on the disks mounted by the current host */
XBT_INFO("*** Storage info on %s ***", sg4::Host::current()->get_cname());
/* - Retrieve all disks from current host */
std::vector<sg4::Disk*> const& disk_list = sg4::Host::current()->get_disks();
/* - For each disk mounted on host, display disk name and mount point */
for (auto const& disk : disk_list)
XBT_INFO("Disk name: %s (read: %.0f B/s -- write: %.0f B/s", disk->get_cname(), disk->get_read_bandwidth(),
disk->get_write_bandwidth());
/* - Write 400,000 bytes on Disk1 */
sg4::Disk* disk = disk_list.front();
sg_size_t write = disk->write(400000);
XBT_INFO("Wrote %llu bytes on '%s'", write, disk->get_cname());
/* - Now read 200,000 bytes */
sg_size_t read = disk->read(200000);
XBT_INFO("Read %llu bytes on '%s'", read, disk->get_cname());
/* - Write 800,000 bytes on Disk3 */
const sg4::Disk* disk3 = disk_list.back();
sg_size_t write_on_disk3 = disk3->write(800000);
XBT_INFO("Wrote %llu bytes on '%s'", write_on_disk3, disk3->get_cname());
/* - Attach some user data to disk1 */
XBT_INFO("*** Get/set data for storage element: Disk1 ***");
auto data = disk->get_unique_data<std::string>();
XBT_INFO("Get storage data: '%s'", data ? data->c_str() : "No user data");
disk->set_data(new std::string("Some user data"));
data = disk->get_unique_data<std::string>();
XBT_INFO("Set and get data: '%s'", data->c_str());
}
int main(int argc, char** argv)
{
sg4::Engine e(&argc, argv);
e.load_platform(argv[1]);
/* - Display Host properties */
for (auto const* h : e.get_all_hosts()) {
XBT_INFO("*** %s properties ****", h->get_cname());
for (auto const& [key, value] : *h->get_properties())
XBT_INFO(" %s -> %s", key.c_str(), value.c_str());
}
e.add_actor("", e.host_by_name("bob"), host);
e.run();
XBT_INFO("Simulated time: %g", sg4::Engine::get_clock());
return 0;
}
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