code: /**
   * Copyright (c) 2004-2005, Regents of the University of California
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * Redistributions of source code must retain the above copyright notice,
   * this list of conditions and the following disclaimer.
   *
   * Redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution.
   *
   * Neither the name of the University of California, Los Angeles nor the
   * names of its contributors may be used to endorse or promote products
   * derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package avrora.monitors;
  
  import avrora.core.Program;
  import avrora.sim.FiniteStateMachine;
  import avrora.sim.Simulator;
  import avrora.sim.clock.Clock;
  import avrora.sim.mcu.DefaultMCU;
  import cck.text.*;
  
  /**
   * The <code>SleepMonitor</code> class is a monitor that tracks statistics about the sleeping patterns of
   * programs, including the total number of cycles awake and the total number of cycles asleep during the
   * simulation.
   *
   * @author Ben L. Titzer
   */
  public class SleepMonitor extends MonitorFactory {
  
      public static class Mon implements Monitor, FiniteStateMachine.Probe {
          public final Simulator simulator;
          public final Program program;
  
          long[] times;
          long lastTransition;
          final FiniteStateMachine fsm;
          final Clock clock;
  
          Mon(Simulator s) {
              simulator = s;
              program = s.getProgram();
              fsm = ((DefaultMCU)s.getMicrocontroller()).getFSM();
              clock = fsm.getClock();
              times = new long[fsm.getNumberOfStates()];
              fsm.insertProbe(this);
          }
  
          public void report() {
              recordCycles(fsm.getCurrentState());
  
              TermUtil.printSeparator("Sleep Monitor results for node "+simulator.getID());
              Terminal.printGreen("State                      Cycles  Percent");
              Terminal.nextln();
              TermUtil.printThinSeparator(Terminal.MAXLINE);
              long total = clock.getCount();
              for ( int cntr = 0; cntr < times.length; cntr++ ) {
                  String state = fsm.getStateName(cntr);
                  Terminal.printGreen(StringUtil.leftJustify(state, 23));
                  Terminal.printBrightCyan(StringUtil.rightJustify(times[cntr], 10));
                  float pcnt = (100.0f * times[cntr]) / total;
                  Terminal.printBrightCyan(StringUtil.rightJustify(StringUtil.toFixedFloat(pcnt, 4), 9));
                  Terminal.print(" %");
                  Terminal.nextln();
              }
              Terminal.nextln();
          }
  
  
          public void fireBeforeTransition(int bs, int as) {
              // do nothing.
          }
  
          public void fireAfterTransition(int bs, int as) {
              recordCycles(bs);
          }
  
          private void recordCycles(int bs) {
              long now = clock.getCount();
              times[bs] += now - lastTransition;
              lastTransition = now;
          }
  
      }
  
      public SleepMonitor() {
          super("The \"sleep\" is a monitor that tracks statistics " +
                  "about the sleeping patterns of programs, including the total number of " +
                  "cycles awake and the total number of cycles asleep during the simulation.");
      }
  
      public Monitor newMonitor(Simulator s) {
          return new Mon(s);
      }
  }
  