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34 lines
706 B
C++
34 lines
706 B
C++
// SPDX-FileCopyrightText: Copyright 2020 suyu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <atomic>
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namespace Common {
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/**
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* SpinLock class
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* a lock similar to mutex that forces a thread to spin wait instead calling the
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* supervisor. Should be used on short sequences of code.
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*/
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class SpinLock {
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public:
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SpinLock() = default;
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SpinLock(const SpinLock&) = delete;
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SpinLock& operator=(const SpinLock&) = delete;
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SpinLock(SpinLock&&) = delete;
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SpinLock& operator=(SpinLock&&) = delete;
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void lock();
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void unlock();
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[[nodiscard]] bool try_lock();
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private:
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std::atomic_flag lck = ATOMIC_FLAG_INIT;
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};
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} // namespace Common
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