boost::posix_time::time_duration measure_running_duration(F const &action)
{
auto const clock = boost::date_time::microsec_clock<boost::posix_time::ptime>();
auto const start = clock.universal_time();
action();
auto const finish = clock.universal_time();
return (finish - start);
}
fs::path JobDir::deliver(
std::string const& contents,
std::string const& tag
)
{
pt::ptime t = universal_time();
std::string file_name(to_iso_string(t));
assert(
file_name.size() == 15
|| file_name.size() == (unsigned)16 + pt::time_duration::num_fractional_digits()
);
if (file_name.size() == 15) { // without fractional seconds
file_name += '.';
file_name += std::string(pt::time_duration::num_fractional_digits(), '0');
}
file_name += '_';
file_name += m_impl->id_str;
if (!tag.empty()) {
file_name += '_';
file_name += tag;
}
fs::path const file(file_name, fs::native);
fs::path tmp_path;
fs::path new_path;
try {
tmp_path = m_impl->tmp_dir / file;
new_path = m_impl->new_dir / file;
} catch (boost::filesystem::filesystem_error const& e) {
throw JobDirError(e.what());
}
fs::ofstream tmp_file(tmp_path);
if (!tmp_file) {
std::string msg("create failed for ");
msg += tmp_path.string();
msg += " (" + boost::lexical_cast<std::string>(errno) + ')';
throw JobDirError(msg);
}
tmp_file << contents << std::flush;
if (!tmp_file) {
std::string msg("write failed for ");
msg += tmp_path.string();
msg += " (" + boost::lexical_cast<std::string>(errno) + ')';
throw JobDirError(msg);
}
tmp_file.close(); // sync too? yes, rename doesn't sync (TODO)
bool e = std::rename(tmp_path.string().c_str(), new_path.string().c_str());
if (e) {
std::string msg("rename failed for ");
msg += tmp_path.string();
msg += " (" + boost::lexical_cast<std::string>(errno) + ')';
throw JobDirError(msg);
}
return new_path;
}
