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80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
/*
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* apple_native_mutex.hpp
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*
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* MIT License
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*
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* Copyright (c) 2019 yohhoy
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef APPLE_NATIVE_MUTEX_HPP_
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#define APPLE_NATIVE_MUTEX_HPP_
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// macOS/iOS mutex
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#include <os/lock.h>
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namespace yamc {
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/*
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* Native mutex wrapper on macOS/iOS families
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*
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* - yamc::apple::unfair_lock
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*
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* https://developer.apple.com/documentation/os/1646466-os_unfair_lock_lock
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*/
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namespace apple {
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class unfair_lock {
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::os_unfair_lock oslock_ = OS_UNFAIR_LOCK_INIT;
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public:
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constexpr unfair_lock() noexcept = default;
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~unfair_lock() = default;
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unfair_lock(const unfair_lock&) = delete;
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unfair_lock& operator=(const unfair_lock&) = delete;
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void lock()
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{
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::os_unfair_lock_lock(&oslock_);
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}
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bool try_lock()
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{
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return ::os_unfair_lock_trylock(&oslock_);
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}
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void unlock()
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{
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::os_unfair_lock_unlock(&oslock_);
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}
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using native_handle_type = ::os_unfair_lock_t;
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native_handle_type native_handle()
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{
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return &oslock_;
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}
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};
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} // namespace apple
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} // namespace yamc
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#endif
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