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test-code6.c
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test-code6.c
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#include "473_mm.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <malloc.h>
#include <errno.h>
#include <sys/mman.h>
//#define PAGE_SIZE 4096
void mm_log(FILE* f1);
int main ()
{
int* vm_ptr;
int PAGE_SIZE = sysconf(_SC_PAGE_SIZE);
//printf("%d\n", PAGE_SIZE);
int vm_size = 16*PAGE_SIZE;
int temp;
vm_ptr=memalign(PAGE_SIZE, vm_size);
if(vm_ptr==NULL)
{
printf("FAILURE in virtual memory allocation\n");
return 0;
}
FILE* f1 = fopen("results.txt", "w");
mm_init((void*)vm_ptr, vm_size, 4, PAGE_SIZE, 2);
mm_log(f1);
/* virtual memory access starts */
temp = vm_ptr[8]; // Read virtual page 1
mm_log(f1);
vm_ptr[8 + ((int)((1*PAGE_SIZE)/sizeof(int)))] = 72; // Write virtual page 2
mm_log(f1);
temp = vm_ptr[8 + ((int)((2*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 3
mm_log(f1);
temp = vm_ptr[8 + ((int)((3*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 4
mm_log(f1);
temp = vm_ptr[8 + ((int)((4*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 5
mm_log(f1);
temp = vm_ptr[8 + ((int)((1*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 2
mm_log(f1);
temp = vm_ptr[9]; // Read virtual page 1
mm_log(f1);
temp = vm_ptr[2 + ((int)((1*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 3
mm_log(f1);
temp = vm_ptr[8 + ((int)((4*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 5
mm_log(f1);
/* virtual memory access ends */
free(vm_ptr);
fclose(f1);
return 0;
}
void mm_log(FILE* f1)
{
fprintf(f1, "%ld %ld\n", mm_report_npage_faults(), mm_report_nwrite_backs());
printf("%ld %ld\n", mm_report_npage_faults(), mm_report_nwrite_backs());
}