Add macro for doing quick and dirty benchmarks…

geode/utility/CMakeLists.txt

@@ -68,6 +68,7 @@ set(module_HEADERS
   stream.h
   str.h
   time.h
+  timed_call.h
   tr1.h
   type_traits.h
   Unique.h

geode/utility/timed_call.h

@@ -0,0 +1,25 @@
+#pragma once
+#include <geode/utility/time.h>
+namespace geode {
+
+struct TimedCallHelper {
+  std::string msg;
+  real start_time = get_time();
+  TimedCallHelper(const string& new_msg)
+   : msg(new_msg)
+  { }
+  ~TimedCallHelper() {
+    const auto end_time = get_time();
+    std::cout << msg << " took " << (end_time - start_time) << " seconds.\n";
+  }
+};
+
+template<class Fn, class... Args> auto timed_call(const string& msg, Fn&& fn, Args&&... args) -> decltype(fn(std::forward<Args>(args)...)) {
+  GEODE_UNUSED const auto& helper = TimedCallHelper{msg};
+  return fn(std::forward<Args>(args)...);
+}
+
+// Call a function printing execution time to cout
+#define GEODE_TIMED_CALL(fn,...) geode::timed_call(#fn,fn,__VA_ARGS__)
+
+} // geode namespace