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- /* Declarations for lightweight locks.
- This file is part of xrcu.
- xrcu 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; either version 3 of the License, or
- (at your option) any later version.
- 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 <https://www.gnu.org/licenses/>. */
- #ifndef __XRCU_LWLOCK_HPP__
- #define __XRCU_LWLOCK_HPP__ 1
- #include <cstdint>
- namespace xrcu
- {
- /* Lightweight lock used when including <mutex> is overkill. Should be just as
- * performant in certain platforms (i.e: Those that support something akin to
- * Linux's futexes), but much lighter space-wise. */
- struct lwlock
- {
- uintptr_t lock = 0;
- void acquire ();
- void release ();
- lwlock () = default;
- lwlock (const lwlock&) = delete;
- void operator= (const lwlock&) = delete;
- };
- }
- #endif
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