Hadrons: moving Hadrons to root directory, build system improvements

Grid/perfmon/Timer.h

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+    /*************************************************************************************
+
+    Grid physics library, www.github.com/paboyle/Grid 
+
+    Source file: ./lib/Timer.h
+
+    Copyright (C) 2015
+
+Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
+Author: Peter Boyle <paboyle@ph.ed.ac.uk>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+    See the full license in the file "LICENSE" in the top level distribution directory
+    *************************************************************************************/
+    /*  END LEGAL */
+#ifndef GRID_TIME_H
+#define GRID_TIME_H
+
+#include <sys/time.h>
+#include <ctime>
+#include <chrono>
+
+namespace Grid {
+
+
+  // Dress the output; use std::chrono
+
+// C++11 time facilities better?
+inline double usecond(void) {
+  struct timeval tv;
+#ifdef TIMERS_ON
+  gettimeofday(&tv,NULL);
+#endif
+  return 1.0*tv.tv_usec + 1.0e6*tv.tv_sec;
+}
+
+typedef  std::chrono::system_clock          GridClock;
+typedef  std::chrono::time_point<GridClock> GridTimePoint;
+typedef  std::chrono::milliseconds          GridMillisecs;
+typedef  std::chrono::microseconds          GridTime;
+typedef  std::chrono::microseconds          GridUsecs;
+
+inline std::ostream& operator<< (std::ostream & stream, const std::chrono::milliseconds & time)
+{
+  stream << time.count()<<" ms";
+  return stream;
+}
+inline std::ostream& operator<< (std::ostream & stream, const std::chrono::microseconds & time)
+{
+  stream << time.count()<<" usec";
+  return stream;
+}
+ 
+class GridStopWatch {
+private:
+  bool running;
+  GridTimePoint start;
+  GridUsecs accumulator;
+public:
+  GridStopWatch () { 
+    Reset();
+  }
+  void     Start(void) { 
+    assert(running == false);
+#ifdef TIMERS_ON
+    start = GridClock::now(); 
+#endif
+    running = true;
+  }
+  void     Stop(void)  { 
+    assert(running == true);
+#ifdef TIMERS_ON
+    accumulator+= std::chrono::duration_cast<GridUsecs>(GridClock::now()-start); 
+#endif
+    running = false; 
+  };
+  void     Reset(void){
+    running = false;
+#ifdef TIMERS_ON
+    start = GridClock::now();
+#endif
+    accumulator = std::chrono::duration_cast<GridUsecs>(start-start); 
+  }
+  GridTime Elapsed(void) {
+    assert(running == false);
+    return std::chrono::duration_cast<GridTime>( accumulator );
+  }
+  uint64_t useconds(void){
+    assert(running == false);
+    return (uint64_t) accumulator.count();
+  }
+  bool isRunning(void){
+    return running;
+  }
+};
+
+}
+#endif