操作系统实验之进程调度

源代码
Process.Java：

package 组成原理;

public class Process {

	public 	int id;
	public	int priority;
	public	int cputime;
	public	int alltime;
		public	int start=1;
		
	 public void setall(int a,int b,int c,int d)
		{
		id =a;
		priority=b;
		cputime=c;
		alltime=d;
		
		}
		
	
		void runprocess(Process a)
		{
			if(a.alltime != 0)
			{System.out .println("开始运行程序"+a.id);
			System.out .println("priority-3");
				a.priority=a.priority-3;
				System.out .println("alltime-1");
			a.alltime=alltime-1;
			System.out .println("cputime+1");
			a.cputime=cputime+1;
			}
			else {
				
		a.start=0;	
		}
		             }

	
			
		}



Test.java:

package 组成原理;

import java.util.Arrays;
import java.util.Scanner;
public class test {
public static void main(String[] args) {
// TODO Auto-generated method stub
Process []a=new Process [5];
for(int x=0;x<5;x++)
{
a[x]=new Process();
System.out .println(“请输入p”+x);
inputProcess(a[x]);

	}
	 startrun(a); 
	
                }

static public void inputProcess(Process a)
{

Scanner in= new Scanner(System.in);
System.out .println("请输入id:");
int	z1=in.nextInt();

System.out .println("请输入priority");
    int z2=in.nextInt();

//a.priority=z2;
System.out .println(“请输入cputime”);
int z3=in.nextInt();
// a.cputime=z3;
System.out .println(“请输入alltime”);

	int z4=in.nextInt();
	//a.alltime=z4;
	a.setall(z1, z2, z3, z4);

}

//bainjie

               static   void startrun(Process a[])
          		{int num=0;
          			int num1=0;
          			for (int i=0;i<a.length;i++)
          			{
          			if (a[i].priority>num1)
          			{num1=a[i].priority;  
          			num =i;
          			}
          			
          			
          			}
          			
          			
          			
          		if(a[num].start!=0)
          			{a[num].runprocess(a[num]);
          			}
          		else {
          			a[num]=a[a.length-1];
          			a = Arrays.copyOf(a, a.length-1);
          			
          		}
          		
          		
          		
          		if (a.length!=0)
          			{startrun(a);
          			} 
          		else {
          			System .out .println("进程调度完毕");
          			
          		}
          		
              			}
          		}

运行结果：