SpinLock.h

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#pragma once
#include <atomic>
#include <mutex>
#include <thread>
 
namespace catapult { namespace utils {
 
    class SpinLock {
    public:
        SpinLock() {
            unlock();
        }
 
    public:
        inline void lock() {
            while (!try_lock())
                std::this_thread::yield();
        }
 
        inline bool try_lock() {
            return !m_isLocked.test_and_set(std::memory_order_acquire);
        }
 
        inline void unlock() noexcept {
            m_isLocked.clear(std::memory_order_release);
        }
 
    private:
        std::atomic_flag m_isLocked;
    };
 
    using SpinLockGuard = std::lock_guard<SpinLock>;
}}