std::vector<pool_file_status> file_pool::get_status(storage_index_t const st) const
{
std::vector<pool_file_status> ret;
{
std::unique_lock<std::mutex> l(m_mutex);
auto const start = m_files.lower_bound(std::make_pair(st, file_index_t(0)));
auto const end = m_files.upper_bound(std::make_pair(st
, std::numeric_limits<file_index_t>::max()));
for (auto i = start; i != end; ++i)
ret.push_back({i->first.second, i->second.mode, i->second.last_use});
}
return ret;
}
void posix_storage::rename_file(file_index_t const index, std::string const& new_filename, storage_error& ec)
{
if (index < file_index_t(0) || index >= files().end_file()) return;
std::string const old_name = files().file_path(index, m_save_path);
if (exists(old_name, ec.ec))
{
std::string new_path;
if (is_complete(new_filename)) new_path = new_filename;
else new_path = combine_path(m_save_path, new_filename);
std::string new_dir = parent_path(new_path);
// create any missing directories that the new filename
// lands in
create_directories(new_dir, ec.ec);
if (ec.ec)
{
ec.file(index);
ec.operation = operation_t::file_rename;
return;
}
rename(old_name, new_path, ec.ec);
if (ec.ec == boost::system::errc::no_such_file_or_directory)
ec.ec.clear();
if (ec)
{
ec.file(index);
ec.operation = operation_t::file_rename;
return;
}
}
else if (ec.ec)
{
// if exists fails, report that error
ec.file(index);
ec.operation = operation_t::file_rename;
return;
}
if (!m_mapped_files)
{
m_mapped_files.reset(new file_storage(files()));
}
m_mapped_files->rename_file(index, new_filename);
}
void file_view_pool::release(storage_index_t const st)
{
std::vector<std::shared_ptr<file_mapping>> defer_destruction;
std::unique_lock<std::mutex> l(m_mutex);
auto& key_view = m_files.get<0>();
auto const begin = key_view.lower_bound(file_id{st, file_index_t(0)});
auto const end = key_view.upper_bound(file_id{st, std::numeric_limits<file_index_t>::max()});
for (auto it = begin; it != end; ++it)
defer_destruction.emplace_back(std::move(it->mapping));
if (begin != end) key_view.erase(begin, end);
l.unlock();
// the files are closed here while the lock is not held
}
void file_pool::release(storage_index_t const st)
{
std::unique_lock<std::mutex> l(m_mutex);
auto begin = m_files.lower_bound(std::make_pair(st, file_index_t(0)));
auto const end = m_files.upper_bound(std::make_pair(st
, std::numeric_limits<file_index_t>::max()));
std::vector<file_handle> to_close;
while (begin != end)
{
to_close.push_back(std::move(begin->second.file_ptr));
m_files.erase(begin++);
}
l.unlock();
// the files are closed here while the lock is not held
}
std::vector<open_file_state> file_view_pool::get_status(storage_index_t const st) const
{
std::vector<open_file_state> ret;
{
std::unique_lock<std::mutex> l(m_mutex);
auto& key_view = m_files.get<0>();
auto const start = key_view.lower_bound(file_id{st, file_index_t(0)});
auto const end = key_view.upper_bound(file_id{st, std::numeric_limits<file_index_t>::max()});
for (auto i = start; i != end; ++i)
{
ret.push_back({i->key.second
, to_file_open_mode(i->mode)
, i->last_use});
}
}
return ret;
}
