www.pudn.com > program.rar > Pcb.java

import java.util.Random; 
 
public class Pcb { 
	private String PID;              
	private String sup; 
	private int rtime;			//要求运行时间	 
	private int htime;			//已经运行时间 
	 
	private int res;             //还需资源量 
	private int ares;            //资源需求总量,最大申请量 
	private int hres;			//已占有资源 
	private int request;			//当前申请资源量 
	 
	private int rstore;			//所需主存大小 
	private int storeadd;	//主存起始位置 
	private String s; 
	 
	Tu t = null; 
	Random rd = new Random(); 
	CheckSafe cs; 
	public Pcb(Tu t,int i){ 
		this.t = t; 
	} 
	public Pcb(Tu t) { 
		this.t = t; 
		PID = t.tpid.getText(); 
		sup = t.tsup.getText(); 
		rtime = Integer.parseInt(t.trtime.getText()); 
		ares = Integer.parseInt(t.tares.getText()); 
		hres = 0; 
		res = ares-hres; 
		request = 0; 
		rstore = Integer.parseInt(t.trs.getText()); 
		htime = 0; 
		storeadd = 0; 
	} 
	public void setPID(String s){ 
		this.PID = s; 
	} 
	public String getPID(){ 
		return PID; 
	} 
	public int getsup(){ 
		return Integer.parseInt(sup); 
	} 
	public void setsup(int s){ 
		this.sup = Integer.toString(s); 
	} 
	 
	public void setrtime(int s){ 
		this.rtime=s; 
	} 
	public int getrtime(){ 
		return rtime; 
	} 
	 
	public int gethtime(){ 
		return htime; 
	} 
	public void sethtime(int s){ 
		this.htime = s; 
	} 
	 
	public int getres(){ 
		return res; 
	} 
	public void setres(int s){ 
		this.res = s; 
	} 
	 
	public int gethres(){ 
		return hres; 
	} 
	public void sethres(int s){ 
		this.hres = s; 
	} 
	 
	public int getRequest(){ 
		return request; 
	} 
	public void setRequest(int i){ 
		this.request = i; 
	} 
	 
	public int getares(){ 
		return ares; 
	} 
	public void setares(int s){ 
		this.ares = s; 
	} 
	 
	public int getrstore(){ 
		return rstore; 
	} 
	public void setrstore(int s){ 
		this.rstore = s; 
	} 
	 
	public int getstoreadd(){ 
		return storeadd; 
	} 
	public void setstoreadd(int s){ 
		this.storeadd = s; 
	} 
	public void giveRequest(){ 
		this.res = ares - hres; 
		if(this.rtime<=t.timeslice) 
			this.request = res; 
		else 
			this.request = rd.nextInt(res + 1); 
	} 
	public boolean haveRequest() { 
		 
		this.hres += request; 
		this.res -= request; 
		if (t.xaRes >= request) { 
			t.xaRes -= request; 
			cs = new CheckSafe(t); 
			if (!cs.test()) { 
				t.xaRes += request; 
				this.hres -= request; 
				this.res += request; 
				return false; 
			} else 
				return true; 
		} else { 
			this.hres -= request; 
			this.res += request; 
			return false; 
		} 
	} 
 
	public String toString(){ 
		s = "PID:"+PID+" 优先级:"+sup+" 要求运行时间:"+rtime 
	     +" 资源需求总量:"+ares+" 已占有资源:"+hres+" 还需要资源量:"+res 
	     +" 当前申请量:"+request+" 主存起始位置:"+storeadd; 
		return s; 
		  
	} 
}