convert this code to java language /* OPERATING SYSTEMS LAB PROJECT * AKASH JAIN * 179303013 * DESIGNING A VIRTUAL MEMORY MANAGER */ #include #include #include const int VM_SIZE=256; const int PAGE_SIZE=256; const int TLB_SIZE=16; const int MM_SIZE=256; int main(int argc, char* argv[]) { FILE *fd; if(argc<2) { printf("NOT ENOUGH AGRUMENTS\n EXITING\n"); return 0; } fd=fopen(argv[1],"r"); if(fd==NULL) { printf("ERROR OPENING FILE\n FILE FAILED TO OPEN\n"); return 0; } char *value=NULL; size_t len=0; ssize_t read; long long page_no,offset,page_table,totalhits=0,fault=0,pages=0; int qp=0; //to maintain the queue position int physicalad=0,frame,logicalad; int tlb[TLB_SIZE][2]; int pagetable[PAGE_SIZE]; memset(tlb,-1,TLB_SIZE*2*sizeof(tlb[0][0])); memset(pagetable,-1,sizeof(pagetable)); int mask=255,mask1=62580,i,hit; while((read=getline(&value,&len,fd))!=-1) { pages++; //get page number and offset from logical address page_no=atoi(value); page_no=page_no>>8; page_no=page_no & mask; offset=atoi(value); offset=offset & mask; logicalad=atoi(value); //printf("%lld %lld\n",page_no,offset); frame=0,physicalad=0; hit=0; //1 if found in TLB //CHECK IN TLB for(i=0;i
convert this code to java language
/*
* AKASH JAIN
* 179303013
* DESIGNING A VIRTUAL MEMORY MANAGER
*/
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
const int VM_SIZE=256;
const int PAGE_SIZE=256;
const int TLB_SIZE=16;
const int MM_SIZE=256;
int main(int argc, char* argv[])
{
FILE *fd;
if(argc<2)
{
printf("NOT ENOUGH AGRUMENTS\n EXITING\n");
return 0;
}
fd=fopen(argv[1],"r");
if(fd==NULL)
{
printf("ERROR OPENING FILE\n FILE FAILED TO OPEN\n");
return 0;
}
char *value=NULL;
size_t len=0;
ssize_t read;
long long page_no,offset,page_table,totalhits=0,fault=0,pages=0;
int qp=0; //to maintain the queue position
int physicalad=0,frame,logicalad;
int tlb[TLB_SIZE][2];
int pagetable[PAGE_SIZE];
memset(tlb,-1,TLB_SIZE*2*sizeof(tlb[0][0]));
memset(pagetable,-1,sizeof(pagetable));
int mask=255,mask1=62580,i,hit;
while((read=getline(&value,&len,fd))!=-1)
{
pages++;
//get page number and offset from logical address
page_no=atoi(value);
page_no=page_no>>8;
page_no=page_no & mask;
offset=atoi(value);
offset=offset & mask;
logicalad=atoi(value);
//printf("%lld %lld\n",page_no,offset);
frame=0,physicalad=0;
hit=0; //1 if found in TLB
//CHECK IN TLB
for(i=0;i<TLB_SIZE;i++)
{
if(tlb[i][0]==page_no)
{
hit=1;
totalhits++;
frame=tlb[i][1];
break;
}
}
//if present in tlb
if(hit==1)
printf("TLB HIT\n");
//search in pagetable
else
{
int f=0;
for(i=0;i<PAGE_SIZE;i++)
{
if(pagetable[i]==page_no)
{
frame=i;
fault++;
break;
}
if(pagetable[i]==-1)
{
f=1;
break;
}
}
if(f==1)
{
pagetable[i]=page_no;
frame=i;
}
//replace in tlb using fifo
tlb[qp][0]=page_no;
tlb[qp][1]=i;
qp++;
qp=qp%15;
}
if(logicalad<10000)
printf("VIRTUAL ADDRESS = %d \t\t\t",logicalad);
else
printf("VIRTUAL ADDRESS = %d \t\t",logicalad);
physicalad=frame*PAGE_SIZE + offset;
printf("PHYSICAL ADDRESS = %d\n",physicalad);
}
double hitrate=(double)totalhits/pages*100;
double faultrate=(double)fault/pages*100;
printf("\nTLB HIT RATE= %.2f %c", hitrate,'%');
printf("\nTLB MISS RATE= %.2f %c",(100-hitrate),'%');
printf("\nPAGE TABLE HIT RATE= %.2f %c", faultrate,'%');
printf("\nPAGE TABLE MISS RATE= %.2f %c\n", (100-faultrate),'%');
}
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