Add mutex implementation using std::atomic_flag

include/sta/atomic_mutex.hpp

@@ -0,0 +1,25 @@
+#ifndef STA_ATOMIC_MUTEX_HPP
+#define STA_ATOMIC_MUTEX_HPP
+
+#include <sta/mutex.hpp>
+
+#include <atomic>
+
+
+namespace sta
+{
+	class AtomicMutex : public Mutex
+	{
+	public:
+		AtomicMutex();
+
+		void acquire() override;
+		void release() override;
+
+	private:
+		std::atomic_flag lock_;
+	};
+} // namespace sta
+
+
+#endif // STA_ATOMIC_MUTEX_HPP

src/atomic_mutex.cpp

@@ -0,0 +1,19 @@
+#include <sta/atomic_mutex.hpp>
+
+
+namespace sta
+{
+	AtomicMutex::AtomicMutex()
+		: lock_{ATOMIC_FLAG_INIT}
+	{}
+
+	void AtomicMutex::acquire()
+	{
+		while (lock_.test_and_set());
+	}
+
+	void AtomicMutex::release()
+	{
+		lock_.clear();
+	}
+} // namespace sta