Add atomic signal implementation

src/atomic_signal.cpp

@@ -0,0 +1,29 @@
+#include <sta/atomic_signal.hpp>
+
+
+namespace sta
+{
+	AtomicSignal::AtomicSignal()
+		: signal_{false}
+	{}
+
+	void AtomicSignal::notify()
+	{
+		signal_.store(true);
+	}
+
+	bool AtomicSignal::peek()
+	{
+		return signal_.load();
+	}
+
+	bool AtomicSignal::test()
+	{
+		return signal_.exchange(false);
+	}
+
+	void AtomicSignal::wait()
+	{
+		while (!signal_.exchange(false));
+	}
+} // namespace sta