inspircd/include/utility/aligned_storage.h
2024-06-07 10:37:56 +01:00

49 lines
1.5 KiB
C++

/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2020-2022, 2024 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2014 Attila Molnar <attilamolnar@hush.com>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
namespace insp
{
template <typename T> class aligned_storage;
}
/** A block of preallocated memory which an object can be created into. */
template <typename T>
class insp::aligned_storage final
{
private:
/** The underlying aligned storage block. */
alignas(T) mutable std::byte data[sizeof(T)];
public:
/** Default constructor for the aligned_storage class. */
aligned_storage() = default;
/** Ignores copying via the copy constructor. */
aligned_storage(const aligned_storage&) { }
/** Accessor for the underlying aligned storage block. */
T* operator->() const { return static_cast<T*>(static_cast<void*>(&data)); }
/** Constant accessor for the underlying aligned storage block. */
operator T*() const { return operator->(); }
};