/* Copyright (c) Edward Billard, 2008 */
/* This must be installed on a directory called JOS 
   Use this class to set defaults 
   Compile: javac JOS
*/

package JOS;

public class JOS {
  // THE USER NEVER CHANGES THESE CONSTANTS
      // debug levels
         public static final int NODEBUG       =0;
         public static final int USER          =1;
         public static final int CONSTRUCTOR   =2;
         public static final int IPC           =3;
         public static final int TRANSITION    =4;
         public static final int METHOD        =5;
      
      // scheduling policies
         public static final int PRIORITY_POLICY = 1;
         public static final int FIFO_POLICY     = 2;
         public static final int SJF_POLICY      = 3;
         
      // number of blocks for JOSDISK
         public static final int DISKSIZE        = 100;
      // number of buffers in buffer pool
         public static final int NUMBUFS         = 20;
  
  // THE USER CAN TYPICALLY SET THESE VALUES
    
      // REMOTE: false, false, false, NODEBUG
      // cp JOS.remote JOS.class
      // LOCAL (with GUI): true, true, true, IPC 
      // cp JOS.local JOS.class

     // set this to false for REMOTE LOGIN and get output to console.
     // OSmenu should not be used. Instead the user executes each
     // application individually, e.g., java DiningPhilosophersOK
        public static boolean useOutGUI       = false;
  
     // set this to false for remote login if there is a readln
        public static boolean useInGUI        = false;
 
     // if useOutGUI is false, then OSmenu will write to console
     // and exit with each selection. set this to true so that
     // OSmenu does not exit.
        public static boolean useOSmenu       = false;
      
     // set the amount of debug
        public static int debugLvl            = NODEBUG;
 
     // set the number of iterations for the applications
        public static int steps               = 6; 

  // THE USER SOMETIMES SETS THESE VALUES 
     // set the maximum slowness of the display. large numbers mean slow.
     // units are in msec for each state transition (1000 = 1 sec)
        public static int maxSlowness = 1000;   
     
     // a large number means the dots move slower. must be > 0
        public static int maxdotSlowness  = 100; 
    
     // set the policy based on the constants above
        public static int schedulingPolicy      = PRIORITY_POLICY;
  
     // set the alpha for the SJF formula (0..1.0)
        public static double alpha               = 0.9;
     
  // THE USER RARELY SETS THESE VALUES

     // use a thread to do buffering of output
        public static boolean useOutController  = false;
     
     // use a thread to do buffering of input 
        public static boolean useInController   = false;
  
     // set to false to avoid scheduling and let Java do it
        public static boolean useScheduler    = true;
        
  
  
  // THE USER SHOULD NEVER MODIFY ANYTHING BELOW
  
  public static Debug dbug;
  public static OutProducer out;  //ttyout
  public static InConsumer in;    //ttyin
  public static DiskUpper disk;   //disk in and out
  protected static Scheduler sch;
  public static Integer cntrl = new Integer(0);
  public static boolean cntrlFlag = false;
  protected static int slowness = maxSlowness; 
  protected static int dotSlowness = maxdotSlowness; 
  
  static {
     dbug = new Debug();
     if (useScheduler) sch = new Scheduler();
     out = new OutProducer("OutProducer");
     in = new InConsumer("InConsumer");
     disk = new DiskUpper("DiskUpper");     // for block I/O
  }
  

}