chromium/third_party/leveldatabase/src/util/no_destructor.h

// Copyright (c) 2018 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.

#ifndef STORAGE_LEVELDB_UTIL_NO_DESTRUCTOR_H_
#define STORAGE_LEVELDB_UTIL_NO_DESTRUCTOR_H_

#include <type_traits>
#include <utility>

namespace leveldb {

// Wraps an instance whose destructor is never called.
//
// This is intended for use with function-level static variables.
template <typename InstanceType>
class NoDestructor { … };

}  // namespace leveldb

#endif  // STORAGE_LEVELDB_UTIL_NO_DESTRUCTOR_H_