63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "memory_manager.h"
|
|
|
|
#define MY_HEAP_SIZE 100
|
|
|
|
int main()
|
|
{
|
|
char my_heap[MY_HEAP_SIZE];
|
|
mmInit(my_heap, MY_HEAP_SIZE);
|
|
|
|
printf("1 -- Available Memory: %d, Fragment Count: %d\n", get_remaining_space(), get_fragment_count());
|
|
|
|
// Allocate 10 bytes
|
|
// shouldn't fail
|
|
char* ptr1 = mymalloc_ff(10);
|
|
if(ptr1 == NULL) {
|
|
printf("ptr1 - mymalloc_ff(10) failed\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
strncpy(ptr1, "HELLO", 10);
|
|
printf("ptr1 is %s\n", ptr1);
|
|
|
|
printf("2 -- Available Memory: %d, Fragment Count: %d\n", get_remaining_space(), get_fragment_count());
|
|
|
|
// Allocate 45 bytes
|
|
// shouldn't fail
|
|
char* ptr2 = mymalloc_wf(45);
|
|
if(ptr2 == NULL) {
|
|
printf("ptr2 - mymalloc_ff(45) failed\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
strncpy(ptr2, "GOODBYE", 45);
|
|
printf("ptr2 is %s\n", ptr2);
|
|
|
|
printf("3 -- Available Memory: %d, Fragment Count: %d\n", get_remaining_space(), get_fragment_count());
|
|
|
|
// Attempt to allocate 50 bytes
|
|
// should fail
|
|
char* ptr3 = mymalloc_bf(50);
|
|
if(ptr3 == NULL) {
|
|
printf("ptr3 - mymalloc_bf(50) failed\n");
|
|
}
|
|
printf("4 -- Available Memory: %d, Fragment Count: %d\n", get_remaining_space(), get_fragment_count());
|
|
|
|
// Free the first two pointers
|
|
myfree(ptr1);
|
|
myfree(ptr2);
|
|
printf("5 -- Available Memory: %d, Fragment Count: %d\n", get_remaining_space(), get_fragment_count());
|
|
|
|
printf("Total successful mallocs: %d\n", get_mymalloc_count());
|
|
|
|
// Double free, should cause a segmentation fault
|
|
myfree(ptr2);
|
|
|
|
mmDestroy();
|
|
|
|
return 0;
|
|
}
|