1 /* Copyright (c) 2006-2018. 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. */
7 #include <unordered_map>
9 #include "simgrid/plugins/file_system.h"
10 #include "simgrid/s4u.hpp"
12 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_test, "a sample log category");
16 void show_info(std::unordered_map<std::string, simgrid::s4u::Storage*> const& mounts)
18 XBT_INFO("Storage info on %s:", simgrid::s4u::Host::current()->get_cname());
20 for (auto const& kv : mounts) {
21 std::string mountpoint = kv.first;
22 simgrid::s4u::Storage* storage = kv.second;
24 // Retrieve disk's information
25 XBT_INFO(" %s (%s) Used: %llu; Free: %llu; Total: %llu.", storage->get_cname(), mountpoint.c_str(),
26 sg_storage_get_size_used(storage), sg_storage_get_size_free(storage), sg_storage_get_size(storage));
32 std::unordered_map<std::string, simgrid::s4u::Storage*> const& mounts =
33 simgrid::s4u::Host::current()->getMountedStorages();
37 // Open an non-existing file to create it
38 std::string filename = "/home/tmp/data.txt";
39 simgrid::s4u::File* file = new simgrid::s4u::File(filename, nullptr);
41 sg_size_t write = file->write(200000); // Write 200,000 bytes
42 XBT_INFO("Create a %llu bytes file named '%s' on /sd1", write, filename.c_str());
44 // check that sizes have changed
47 // Now retrieve the size of created file and read it completely
48 const sg_size_t file_size = file->size();
50 const sg_size_t read = file->read(file_size);
51 XBT_INFO("Read %llu bytes on %s", read, filename.c_str());
53 // Now write 100,000 bytes in tmp/data.txt
54 write = file->write(100000); // Write 100,000 bytes
55 XBT_INFO("Write %llu bytes on %s", write, filename.c_str());
57 simgrid::s4u::Storage* storage = simgrid::s4u::Storage::byName("Disk4");
59 // Now rename file from ./tmp/data.txt to ./tmp/simgrid.readme
60 std::string newpath = "/home/tmp/simgrid.readme";
61 XBT_INFO("Move '%s' to '%s'", file->getPath(), newpath.c_str());
64 // Test attaching some user data to the file
65 file->setUserdata(new std::string("777"));
66 std::string* file_data = static_cast<std::string*>(file->getUserdata());
67 XBT_INFO("User data attached to the file: %s", file_data->c_str());
73 // Now attach some user data to disk1
74 XBT_INFO("Get/set data for storage element: %s", storage->get_cname());
75 XBT_INFO(" Uninitialized storage data: '%s'", static_cast<char*>(storage->getUserdata()));
77 storage->setUserdata(new std::string("Some user data"));
78 std::string* storage_data = static_cast<std::string*>(storage->getUserdata());
79 XBT_INFO(" Set and get data: '%s'", storage_data->c_str());
83 // Reopen the file and then unlink it
84 file = new simgrid::s4u::File("/home/tmp/simgrid.readme", nullptr);
85 XBT_INFO("Unlink file: '%s'", file->getPath());
87 delete file; // Unlinking the file on "disk" does not free the object
93 int main(int argc, char** argv)
95 simgrid::s4u::Engine e(&argc, argv);
96 sg_storage_file_system_init();
97 e.loadPlatform(argv[1]);
98 simgrid::s4u::Actor::create("host", simgrid::s4u::Host::by_name("denise"), MyHost());