Files
scylladb/utils/file_lock.hh
Avi Kivity fcb8d040e8 treewide: use Software Package Data Exchange (SPDX) license identifiers
Instead of lengthy blurbs, switch to single-line, machine-readable
standardized (https://spdx.dev) license identifiers. The Linux kernel
switched long ago, so there is strong precedent.

Three cases are handled: AGPL-only, Apache-only, and dual licensed.
For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0),
reasoning that our changes are extensive enough to apply our license.

The changes we applied mechanically with a script, except to
licenses/README.md.

Closes #9937
2022-01-18 12:15:18 +01:00

46 lines
892 B
C++

/*
* Copyright (C) 2014-present ScyllaDB
*/
/*
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#pragma once
#include <memory>
#include <ostream>
#include <filesystem>
#include <seastar/core/sstring.hh>
#include <seastar/core/future.hh>
#include "seastarx.hh"
namespace fs = std::filesystem;
namespace utils {
class file_lock {
public:
file_lock() = delete;
file_lock(const file_lock&) = delete;
file_lock(file_lock&&) noexcept;
~file_lock();
file_lock& operator=(file_lock&&) = default;
static future<file_lock> acquire(fs::path);
fs::path path() const;
sstring to_string() const {
return path().native();
}
private:
class impl;
file_lock(fs::path);
std::unique_ptr<impl> _impl;
};
std::ostream& operator<<(std::ostream& out, const file_lock& f);
}