Initial commit

VectorFiller/atlas/time/time.h

@@ -0,0 +1,29 @@
+// -*- mode: c++ -*-
+
+#pragma once
+
+namespace atlas::time {
+template <typename Duration>
+class Timer {
+public:
+    using duration_type = Duration;
+
+    virtual ~Timer() = default;
+    virtual auto start() -> void = 0;
+    virtual auto elapsed() const -> duration_type;
+
+    template <typename T>
+    struct TimerResult {
+        T value;
+        duration_type duration;
+    };
+
+    template <typename F>
+    [[nodiscard]] auto measure(F&& f) -> TimerResult<decltype(f())>
+    {
+        start();
+        auto v = f();
+        return { v, elapsed() };
+    }
+};
+}