CPP/计算机组成原理实验代码/OPT2.cpp

#include<stdio.h>
int block_num;   //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int page_num;   //Ҫ<><D2AA><EFBFBD>ʵ<EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD>и<EFBFBD><D0B8><EFBFBD>
int page[100]; //Ҫ<><D2AA><EFBFBD>ʵ<EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int memory[10]; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD>ҳ<EFBFBD><D2B3>
int table[100][10]; //<2F><>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>
int reg[10];  //<2F>Ĵ<EFBFBD><C4B4><EFBFBD>--<2D><>¼ҳ<C2BC><D2B3><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD>ʱ<EFBFBD><CAB1>
char Que[100];  //<2F><><EFBFBD>飬<EFBFBD><E9A3AC>¼<EFBFBD>Ƿ<EFBFBD>ȱҳ
 
int main()
{	
    int count=0; //<2F><>¼ȱҳ<C8B1><D2B3><EFBFBD><EFBFBD>  
    int i,j,k;	
	while(1) 
	{
		printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĸ<EFBFBD><EFBFBD><EFBFBD>(M<=10):\n");
		scanf("%d",&block_num);
		printf("\n");
		break;
	}
		
	while(1)
	{
		printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>и<EFBFBD><EFBFBD><EFBFBD>(P<=100):\n");
		scanf("%d",&page_num);			
		printf("\n");
		break;
	}
	
	printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:\n");
	for(i=0;i<page_num;i++)
	{
		scanf("%d",&page[i]);
		Que[i] = 'N';
	}
		 	
	for(i=0;i<block_num;i++)
	     memory[i]=-1;   //<2F><>ʼ<EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>Ĭ<EFBFBD><C4AC>Ϊ<EFBFBD>գ<EFBFBD><D5A3><EFBFBD>-1<><31>ʾ
 
    //<2F><><EFBFBD><EFBFBD>ҳ<EFBFBD><D2B3>
	for(i=0;i<page_num;i++)
	{
		if(i==0)   //<2F><><EFBFBD>ʵĵ<CAB5>һ<EFBFBD><D2BB>ҳ<EFBFBD><D2B3>
		{
			memory[i]=page[i];
			reg[i]=i;
			for(j=0;j<block_num;j++)
				table[i][j]=memory[j];
			Que[i]='Y';
			count++;
		}
		else
		{    /*<2A>ж<EFBFBD><D0B6><EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/   
			for(j=0,k=0;j<block_num;j++)
			{
				if(memory[j]!=page[i])
					k++;
				else
				{    /*<2A><>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>*/
					reg[j]=i;  //ˢ<>¸<EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD>ʱ<EFBFBD><CAB1>
					for(int n=0;n<block_num;n++)
						table[i][n]=memory[n];
				}
			}
		}
		if(k==block_num)   /*<2A><>ҳ<EFBFBD>治<EFBFBD><E6B2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD>ȱҳ*/
		{
			int q=0;
			Que[i]='Y';
		    count++;
			for(int j=0;j<block_num;j++)
			{
				if(memory[j]==-1)   /*<2A>ڴ<EFBFBD><DAB4><EFBFBD>δ<EFBFBD><CEB4>*/
				{
					memory[j]=page[i];
				    reg[j]=i;
				    for(int n=0;n<block_num;n++)
					    table[i][n]=memory[n]; 
					break;
				}
				else   
					q++;	
			}
			if(q==block_num)/*<2A>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>LRU<52>û<EFBFBD><C3BB>㷨ѡ<E3B7A8>񻻳<EFBFBD>ҳ*/ 
			{
			    int min=0;  //<2F><>¼<EFBFBD><C2BC><EFBFBD><EFBFBD>ҳ
        	    for(int m=1;m<block_num;m++)
			        if(reg[m]<reg[min])
				    	min=m;
		        memory[min]=page[i];
                reg[min]=i; /*<2A><>¼<EFBFBD><C2BC>ҳ<EFBFBD>ķ<EFBFBD><C4B7><EFBFBD>ʱ<EFBFBD>䣨<EFBFBD>µ<EFBFBD><C2B5><EFBFBD>ҳ<EFBFBD><D2B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮ǰmin<69><6E>λ<EFBFBD>ã<EFBFBD><C3A3>轫minλ<6E>õķ<C3B5><C4B7><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>ģ<EFBFBD>*/
                for(int n=0;n<block_num;n++)
			       table[i][n]=memory[n];
			}
		}
    }
    
 	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>й<EFBFBD><D0B9>̼<EFBFBD><CCBC><EFBFBD><EFBFBD><EFBFBD> 
	printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>OPTҳ<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD>㷨<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: \n");
	printf("\n");
	printf("\n");
	printf("ҳ<EFBFBD><EFBFBD>:");
	for(i=0;i<page_num;i++)
		printf("%3d",page[i]);
	printf("\n");
	printf("-------------------------\n");
	for(i=0;i<block_num;i++) 	
	{
		printf("%2d:",i);	 
		for(j=0;j<page_num;j++)
			printf("%3d",table[j][i]);
		printf("\n");
	}
    printf("-------------------------\n");
	printf("ȱҳ:");
	for(i=0;i<page_num;i++)
	    printf("%3c",Que[i]);
	printf("\n");
	
	printf("-------------------------\n");
	printf("\tȱҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>:%d\n",count);
	printf("\tȱҳ<EFBFBD><EFBFBD>:%d/%d\n",count,page_num);
	printf("-------------------------\n");
}