📄 memory.java
字号:
String s1=" "+a[loc+1].address+" "+a[loc+1].length+" 未分配 ";
memorylist.add(s1,loc+3);
}
public void downModifyMemory(mmemory a[],process pp,int lastp,int loc){
for(int i=loc;i<lastp;i++){
a[i]=new mmemory();a[i]=a[i+1];
}
a[loc-1].length=a[loc-1].length+pp.size;a[loc-1].state=false;a[loc-1].pid=0;
String s=" "+a[loc-1].address+" "+a[loc-1].length+" 未分配 ";
memorylist.delItem(loc+1);memorylist.delItem(loc+1);memorylist.add(s,loc+1);
}
public void modifyMemory(mmemory a[],process pp,int lastp,int loc){
if(loc==0||loc==lastp-1){
if((loc==0&&a[loc+1].state==true)||(loc==lastp-1&&a[loc-1].state==true)){
a[loc].state=false;a[loc].pid=0;
String s=" "+a[loc].address+" "+a[loc].length+" 未分配 ";
memorylist.delItem(loc+2);memorylist.add(s,loc+2);
}
else if(loc==0&&a[loc+1].state==false){
process p=new process();p.size=a[loc+1].length;
downModifyMemory(a,p,lastp,loc+1);
}
else if(loc==lastp-1&&a[loc-1].state==false){
downModifyMemory(a,pp,lastp,loc);
}
}
else{
if(a[loc-1].state==false&&a[loc+1].state==true){
downModifyMemory(a,pp,lastp,loc);
}
else if(a[loc-1].state==true&&a[loc+1].state==false){
process p=new process();p.size=a[loc+1].length;
downModifyMemory(a,p,lastp,loc+1);
}
else if(a[loc-1].state==false&&a[loc+1].state==false){
a[loc-1].length=a[loc-1].length+a[loc].length+a[loc+1].length;
for(int i=loc;i<lastp;i++){
a[i]=new mmemory();a[i]=a[i+2];
}
String s=" "+a[loc-1].address+" "+a[loc-1].length+" 未分配 ";
memorylist.delItem(loc+1);memorylist.delItem(loc+1);memorylist.delItem(loc+1);memorylist.add(s,loc+1);
}
else{
a[loc].state=false;a[loc].pid=0;
String s=" "+a[loc].address+" "+a[loc].length+" 未分配 ";
memorylist.delItem(loc+2);memorylist.add(s,loc+2);
}
}
}
class addProcess implements ActionListener{
public void actionPerformed(ActionEvent e){
String str;
str=text1.getText()+" "+text2.getText()+" "+priority.getSelectedItem()
+" "+text3.getText()+" "+text4.getText();
process pp=new process();
pp.pid=Integer.parseInt(text1.getText());pp.name=text2.getText();
pp.pri=Integer.parseInt(priority.getSelectedItem());
pp.time=Integer.parseInt(text3.getText());
pp.size=Integer.parseInt(text4.getText());
if((ready.countItems()-1)>=0&&(ready.countItems()-1)<NR){
int location=insert(pro1,pp,ready.countItems()-1);
str=" "+str;
ready.add(str,location+1);
int loc=findMemoryLocation(mem,pp,memorylist.countItems()-2,true);
if(mem[loc].length==pp.size){
mem[loc].state=true;mem[loc].pid=pp.pid;
String s=" "+mem[loc].address+" "+mem[loc].length+" 分配 "+mem[loc].pid;
memorylist.delItem(loc+2);memorylist.add(s,loc+2);
}
else{
upModifyMemory(mem,pp,memorylist.countItems()-2,loc);
}
}
else{
int location=insert(pro2,pp,wait.countItems()-1);
str=" "+str;
wait.add(str,location+1);
}
}
}
class runProcess implements ActionListener{
public void actionPerformed(ActionEvent e){
String s="进程PID="+pro1[0].pid+"已经调入CPU!";
message.add(s,0);
timex=RunProcess(pro1[0].time,timex,ready.getItem(1));
if(timex>=0){
completed.add(ready.getItem(1));
process p0=new process();p0=modify(pro1,ready.countItems()-1,0);
ready.delItem(1);
int locat=findMemoryLocation(mem,p0,memorylist.countItems()-2,false);
modifyMemory(mem,p0,memorylist.countItems()-2,locat);
if(wait.countItems()-1!=0){
process p1=new process();p1=modify(pro2,wait.countItems()-1,0);
String str=wait.getItem(1);wait.delItem(1);
int loc=insert(pro1,p1,ready.countItems()-1);ready.add(str,loc+1);
int lo=findMemoryLocation(mem,p1,memorylist.countItems()-2,true);
if(mem[lo].length==p1.size){
mem[lo].state=true;mem[lo].pid=p1.pid;
String ss=" "+mem[lo].address+" "+mem[lo].length+" 分配 "+mem[loc].pid;
memorylist.delItem(lo+2);memorylist.add(ss,lo+2);
}
else{
upModifyMemory(mem,p1,memorylist.countItems()-2,lo);
}
}
if(timex>0){
s="进程PID="+p0.pid+"已经运行完毕！";message.add(s,0);
}
else{
s="进程PID="+p0.pid+"已经运行完毕，"+"并且这个时间片被执行完！";
message.add(s,0);timex=TIME;
}
}
else if(timex<0){
message.add("这个时间片被执行完！",0);
process p0=new process();p0=modify(pro1,ready.countItems()-1,0);
ready.delItem(1);
int locat=findMemoryLocation(mem,p0,memorylist.countItems()-2,false);
modifyMemory(mem,p0,memorylist.countItems()-2,locat);
if(wait.countItems()-1!=0){
process p1=new process();p1=modify(pro2,wait.countItems()-1,0);
String str=wait.getItem(1);wait.delItem(1);
int loc=insert(pro1,p1,ready.countItems()-1);ready.add(str,loc+1);
int lo=findMemoryLocation(mem,p1,memorylist.countItems()-2,true);
if(mem[lo].length==p1.size){
mem[lo].state=true;mem[lo].pid=p1.pid;
String ss=" "+mem[lo].address+" "+mem[lo].length+" 分配 "+mem[loc].pid;
memorylist.delItem(lo+2);memorylist.add(ss,lo+2);
}
else{
upModifyMemory(mem,p1,memorylist.countItems()-2,lo);
}
}
process pp=new process();pp.pid=p0.pid;
pp.name=p0.name;pp.pri=p0.pri+1;
pp.time=Math.abs(timex);pp.size=p0.size;
if((ready.countItems()-1)>=0&&(ready.countItems()-1)<NR){
message.add("进程PID="+pp.pid+"被放入就绪队列，并且优先级被降一！",0);
int location=insert(pro1,pp,ready.countItems()-1);
String str=" "+pp.pid+" "+pp.name+" "+pp.pri+" "
+pp.time+" "+pp.size;
ready.add(str,location+1);
int loc=findMemoryLocation(mem,pp,memorylist.countItems()-2,true);
if(mem[loc].length==pp.size){
mem[loc].state=true;mem[loc].pid=pp.pid;
String ss=" "+mem[loc].address+" "+mem[loc].length+" 分配 "+mem[loc].pid;
memorylist.delItem(loc+2);memorylist.add(ss,loc+2);
}
else{
upModifyMemory(mem,pp,memorylist.countItems()-2,loc);
}
}
else{
message.add("进程PID="+pp.pid+"被放入后备队列，并且优先级被降一！",0);
int location=insert(pro2,pp,wait.countItems()-1);
String str=" "+pp.pid+" "+pp.name+" "+pp.pri+" "+pp.time+" "+pp.size;
wait.add(str,location+1);
}
timex=TIME;
}
}
}
class modifyProcess implements ActionListener{
public void actionPerformed(ActionEvent e){
if(e.getSource()==sup){
if(findLocation(pro1,Integer.parseInt(t2.getText()),ready.countItems()-1)==-1)
message.add("输入数据有误或无此记录，请重新输入！");
else{
int location=findLocation(pro1,Integer.parseInt(t2.getText()),ready.countItems()-1)+1;
process p=new process();p=modify(pro1,ready.countItems()-1,location-1);
pro3[suspend.countItems()-1]=p;
String str=ready.getItem(location);suspend.add(str);ready.delItem(location);
int loc=findMemoryLocation(mem,p,memorylist.countItems()-2,false);
modifyMemory(mem,p,memorylist.countItems()-2,loc);
if(wait.countItems()-1!=0){
process pp=new process();pp=modify(pro2,wait.countItems()-1,0);
str=wait.getItem(1);wait.delItem(1);
int locat=insert(pro1,pp,ready.countItems()-1);ready.add(str,locat+1);
int lo=findMemoryLocation(mem,pp,memorylist.countItems()-2,true);
if(mem[lo].length==pp.size){
mem[lo].state=true;mem[lo].pid=pp.pid;
String s=" "+mem[lo].address+" "+mem[lo].length+" 分配 "+mem[loc].pid;
memorylist.delItem(lo+2);memorylist.add(s,lo+2);
}
else{
upModifyMemory(mem,pp,memorylist.countItems()-2,lo);
}
}
}
}
if(e.getSource()==resu){
if(findLocation(pro3,Integer.parseInt(t1.getText()),suspend.countItems()-1)==-1)
message.add("输入数据有误或无此记录，请重新输入！");
else{
int location=findLocation(pro3,Integer.parseInt(t1.getText()),suspend.countItems()-1)+1;
process pp=new process();
pp=modify(pro3,suspend.countItems()-1,location-1);
String str=suspend.getItem(location);
suspend.delItem(location);
if((ready.countItems()-1)>=0&&(ready.countItems()-1)<NR){
int loca=insert(pro1,pp,ready.countItems()-1);
ready.add(str,loca+1);
int loc=findMemoryLocation(mem,pp,memorylist.countItems()-2,true);
if(mem[loc].length==pp.size){
mem[loc].state=true;mem[loc].pid=pp.pid;
String s=" "+mem[loc].address+" "+mem[loc].length+" 分配 "+mem[loc].pid;
memorylist.delItem(loc+2);memorylist.add(s,loc+2);
}
else{
upModifyMemory(mem,pp,memorylist.countItems()-2,loc);
}
}
else{
int loc=insert(pro2,pp,wait.countItems()-1);
wait.add(str,loc+1);
}
}
}
}
}
}
public class Memory{
public static void main(String[] args){
Fframe f=new Fframe();
f.createFrame();
}
}⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -