1 files changed, 56 insertions, 0 deletions
diff --git a/src/cmd/timer.cpp b/src/cmd/timer.cpp
new file mode 100644
index 000000000..14eb47524
--- /dev/null
+++ b/src/cmd/timer.cpp
@@ -0,0 +1,56 @@
+/*
+* (C) 2009 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include "timer.h"
+#include <chrono>
+#include <iomanip>
+
+void Timer::start()
+   {
+   stop();
+   m_timer_start = get_clock();
+   }
+
+void Timer::stop()
+   {
+   if(m_timer_start)
+      {
+      const u64bit now = get_clock();
+
+      if(now > m_timer_start)
+         m_time_used += (now - m_timer_start);
+
+      m_timer_start = 0;
+      ++m_event_count;
+      }
+   }
+
+u64bit Timer::get_clock()
+   {
+   auto now = std::chrono::high_resolution_clock::now().time_since_epoch();
+   return std::chrono::duration_cast<std::chrono::nanoseconds>(now).count();
+   }
+
+std::ostream& operator<<(std::ostream& out, Timer& timer)
+   {
+   //out << timer.value() << " ";
+
+   double events_per_second_fl =
+      static_cast<double>(timer.events() / timer.seconds());
+
+   u64bit events_per_second = static_cast<u64bit>(events_per_second_fl);
+
+   out << events_per_second << " " << timer.get_name() << " per second; ";
+
+   std::string op_or_ops = (timer.events() == 1) ? "op" : "ops";
+
+   out << std::setprecision(2) << std::fixed
+       << timer.ms_per_event() << " ms/op"
+       << " (" << timer.events() << " " << op_or_ops << " in "
+       << timer.milliseconds() << " ms)";
+
+   return out;
+   }