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@@ -25,3 +25,43 @@ inline void spin_unlock(uint32_t volatile* lock_addr)
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: "r"(lock_addr)
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: "eax", "memory");
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}
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+
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+namespace types {
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+
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+struct mutex {
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+ using mtx_t = volatile uint32_t;
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+
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+ mtx_t m_lock = 0;
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+
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+ inline void lock(void)
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+ {
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+ spin_lock(&m_lock);
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+ }
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+
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+ inline void unlock(void)
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+ {
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+ spin_unlock(&m_lock);
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+ }
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+};
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+
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+class lock_guard {
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+private:
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+ mutex& m_mtx;
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+
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+public:
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+ explicit lock_guard(mutex& mtx)
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+ : m_mtx(mtx)
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+ {
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+ mtx.lock();
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+ }
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+
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+ lock_guard(const lock_guard&) = delete;
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+ lock_guard(lock_guard&&) = delete;
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+
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+ ~lock_guard()
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+ {
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+ m_mtx.unlock();
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+ }
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+};
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+
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+} // namespace types
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