Add -l flag to enable logging

Runtime/CStopwatch.hpp

@@ -0,0 +1,21 @@
+#ifndef __URDE_CSTOPWATCH_HPP__
+#define __URDE_CSTOPWATCH_HPP__
+
+#include <chrono>
+
+namespace urde
+{
+class CStopwatch
+{
+    std::chrono::steady_clock::time_point m_start;
+public:
+    CStopwatch() : m_start(std::chrono::steady_clock::now()) {}
+    void report(const char* name) const
+    {
+        printf("%s %f\n", name, std::chrono::duration_cast<std::chrono::microseconds>(
+            std::chrono::steady_clock::now() - m_start).count() / 1000000.f);
+    }
+};
+}
+
+#endif // __URDE_CSTOPWATCH_HPP__