Implement some syscalls

src/common/utils/timer.hpp

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <chrono>
+
+namespace utils
+{
+	template <typename Clock = std::chrono::high_resolution_clock>
+	class timer
+	{
+	public:
+		void update()
+		{
+			this->point_ = Clock::now();
+		}
+
+		bool has_elapsed(typename Clock::duration duration) const
+		{
+			const auto now = Clock::now();
+			const auto diff = now - this->point_;
+			return diff > duration;
+		}
+
+	private:
+		typename Clock::time_point point_{ Clock::now() };
+	};
+}