simproc.java

操作系统的线程模拟程序

import java.util.Random ;

class SimProc extends Thread {

    private Scheduler mySched ; 
    private int count ;
    private char nm ;
    //private int count ;
 
    
    public SimProc(Scheduler sch, String name,int /*int*/ i) {
	super(name) ;
	mySched = sch ;
	count = i ;
        start() ;
    }

    public /*float */int getCount() {
       return count ;
    }



    private void addToReadyQueue() {
	mySched.addProcess(this) ;
    }

    private void removeFromReadyQueue() {
	mySched.removeProcess(this) ;
	mySched.endSlice(this) ; // want something else to run!
    }

    public void run() {
    	RoundScheduler rou = new RoundScheduler() ;
    
	
    	//FifoScheduler rou=new FifoScheduler();
	addToReadyQueue() ;
	while(count > 0) {
		mySched.endSlice(this) ;
		//int k = Math.abs(myrand.nextInt()) ;
		//int ans = collatz(k) ;
		//if (ans > 0) count-- ;
	
		//轮转开始
		int time1=rou.quant;
		if(count<rou.quant)
			
			time1=count;
		
		if(count>0.001)
		System.out.println("This is " + getName() + " - Time is "
			 +time1 ) ; 
		count-=rou.quant;//轮转结束
		
		/*System.out.println("This is " + getName() + "  completed!  "
				  ) ;
		break;*/
		
	}
	removeFromReadyQueue() ;
    }
}