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
|
#include <stdio.h>
#include <stdlib.h>
static int MB = 1024*1024;
static int sum = 0;
void* tryAllocate(size_t size)
{
sum += size/MB;
void* ptr = malloc(size);
if (!ptr) {
printf("FAILED allocating %i MB.\n", size/MB);
return 0;
}
printf("allocated %i MB.\n", size/MB);
return ptr;
}
int main(int argc, char *argv[])
{
size_t size = 100;
if (argc == 2) {
size = atoi(argv[1]);
}
void* ptr1 = tryAllocate(size * MB);
void* ptr2 = tryAllocate(1500 * MB);
size_t re = 10 * size;
void* ptr3 = realloc(ptr1, re * MB);
sum += re - size;
int ret = 0;
if (!ptr3) {
printf("FAILED reallocating %i MB.\n", re);
ret = 1;
} else {
printf("reallocated %i MB.\n", re);
}
if (ret == 0)
printf("allocated %i MB in sum\n", sum);
else
printf("FAILED to allocate %i MB in sum\n", sum);
return 0;
}
|
