-
Notifications
You must be signed in to change notification settings - Fork 1
/
test-code5.c
74 lines (65 loc) · 1.66 KB
/
test-code5.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
#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(void);
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;
}
mm_init((void*)vm_ptr, vm_size, 4, PAGE_SIZE, 1);
mm_log();
/* virtual memory access starts */
/*
*r1
w2
r3
r4
r5
r2
r1
r3
r5
* */
temp = vm_ptr[8]; // Read virtual page 1
mm_log();
vm_ptr[8 + ((int)((1*PAGE_SIZE)/sizeof(int)))] = 72; // Write virtual page 2
mm_log();
temp = vm_ptr[8 + ((int)((2*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 3
mm_log();
temp = vm_ptr[8 + ((int)((3*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 4
mm_log();
temp = vm_ptr[8 + ((int)((4*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 5
mm_log();
temp = vm_ptr[8 + ((int)((1*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 2
mm_log();
temp = vm_ptr[9]; // Read virtual page 1
mm_log();
temp = vm_ptr[2 + ((int)((1*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 3
mm_log();
temp = vm_ptr[8 + ((int)((4*PAGE_SIZE)/sizeof(int)))]; // Read virtual page 5
mm_log();
/* virtual memory access ends */
free(vm_ptr);
return 0;
}
void mm_log()
{
FILE* f1 = fopen("results.txt", "w");
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());
}