SimGrid  3.18
Versatile Simulation of Distributed Systems
examples/s4u/io-file-remote/s4u-io-file-remote.cpp
/* Copyright (c) 2014-2017. 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 <src/plugins/file_system/FileSystem.hpp>
#include <string>
#define INMEGA (1024 * 1024)
XBT_LOG_NEW_DEFAULT_CATEGORY(remote_io, "Messages specific for this io example");
static int host(int argc, char* argv[])
{
simgrid::s4u::File file(argv[1], nullptr);
const char* filename = file.getPath();
XBT_INFO("Opened file '%s'", filename);
file.dump();
XBT_INFO("Try to read %llu from '%s'", file.size(), filename);
sg_size_t read = file.read(file.size());
XBT_INFO("Have read %llu from '%s'. Offset is now at: %llu", read, filename, file.tell());
XBT_INFO("Seek back to the beginning of the stream...");
file.seek(0, SEEK_SET);
XBT_INFO("Offset is now at: %llu", file.tell());
if (argc > 5) {
simgrid::s4u::File remoteFile(argv[2], nullptr);
filename = remoteFile.getPath();
XBT_INFO("Opened file '%s'", filename);
XBT_INFO("Try to write %llu MiB to '%s'", remoteFile.size() / 1024, filename);
sg_size_t write = remoteFile.write(remoteFile.size() * 1024);
XBT_INFO("Have written %llu bytes to '%s'.", write, filename);
if (std::stoi(argv[5]) != 0) {
XBT_INFO("Move '%s' (of size %llu) from '%s' to '%s'", filename, remoteFile.size(),
remoteFile.remoteMove(simgrid::s4u::Host::by_name(argv[3]), argv[4]);
} else {
XBT_INFO("Copy '%s' (of size %llu) from '%s' to '%s'", filename, remoteFile.size(),
remoteFile.remoteCopy(simgrid::s4u::Host::by_name(argv[3]), argv[4]);
}
}
return 0;
}
int main(int argc, char** argv)
{
simgrid::s4u::Engine e(&argc, argv);
e.loadPlatform(argv[1]);
e.registerFunction("host", host);
e.loadDeployment(argv[2]);
std::map<std::string, simgrid::s4u::Storage*> allStorages;
for (auto const& s : allStorages) {
XBT_INFO("Init: %llu/%llu MiB used/free on '%s'", sg_storage_get_size_used(s.second) / INMEGA,
sg_storage_get_size_free(s.second) / INMEGA, s.second->getCname());
}
e.run();
for (auto const& s : allStorages) {
XBT_INFO("End: %llu/%llu MiB used/free on '%s'", sg_storage_get_size_used(s.second) / INMEGA,
sg_storage_get_size_free(s.second) / INMEGA, s.second->getCname());
}
XBT_INFO("Simulation time %g", simgrid::s4u::Engine::getClock());
return 0;
}