AbstractChrono.java

/*
 * Class:        AbstractChrono
 * Description:  calculates CPU time of parts of a program
 * Environment:  Java
 * Software:     SSJ 
 * Copyright (C) 2001  Pierre L'Ecuyer and Universite de Montreal
 * Organization: DIRO, Universite de Montreal
 * @author       
 * @since
 *
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package umontreal.ssj.util;

public abstract class AbstractChrono {
 
   private long m_second;
   private long m_microsec;
   private long[] now = new long[2];
 
   // tab[0] = seconds, tab[1] = microseconds
   protected abstract void getTime(long[] tab);

   public AbstractChrono() {
   }

   public void init() {
      getTime(now);
      m_second = now[0];
      m_microsec = now[1];
   }

   public double getSeconds() {
      getTime(now);
      double time = (now[1] - m_microsec) / 1000000.0 + (now[0] - m_second);
      return time;
   }

   public double getMinutes() {
      getTime(now);
      double time = (now[1] - m_microsec) / 1000000.0 + (now[0] - m_second);
      return time * 1.666666667 * 0.01;
   }

   public double getHours() {
      getTime(now);
      double time = (now[1] - m_microsec) / 1000000.0 + (now[0] - m_second);
      return time * 2.777777778 * 0.0001;
   }

   public String format() {
      return format(getSeconds());
   }

   public static String format(double time) {
      int second, hour, min, centieme;
      hour = (int) (time / 3600.0);
      if (hour > 0)
         time -= ((double) hour * 3600.0);
      min = (int) (time / 60.0);
      if (min > 0)
         time -= ((double) min * 60.0);
      second = (int) time;
      centieme = (int) (100.0 * (time - (double) second) + 0.5);
      return String.valueOf(hour) + ":" + min + ":" + second + "." + centieme;
   }
 
}