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
|
#include <string.h>
#include "test.h"
// Define the functions with the required signatures
void pgstat_archiver_init_shmem_cb(void *stats) {
printf("Archiver init_shmem_cb called with %p\n", stats);
ASSERT(0x1234, stats);
}
// Define a struct with two function pointers
struct MyStruct {
void (*copy_func)(void *dest, const void *src, size_t n); // Function like memcpy
void (*init_shmem_cb)(void *stats); // Function for initializing shared memory
};
// Initialize a static const array of MyStruct with two elements
static const struct MyStruct myArray[2] = {
[0] = {
.copy_func = memcpy, // Only initialize the first function
// init_shmem_cb is not initialized
},
[1] = {
// copy_func is not initialized
.init_shmem_cb = pgstat_archiver_init_shmem_cb, // Only initialize the second function
}
};
int main() {
char src[] = "Hello, world!";
char dest[50];
void *dummyStats = (void *)0x1234; // Some dummy stats pointer
// Loop through the array and call the appropriate function
for (int i = 0; i < 2; i++) {
if (myArray[i].copy_func) {
// Call the first function if it's initialized
myArray[i].copy_func(dest, src, sizeof(src));
printf("Array element %d - Copy result: %s\n", i + 1, dest);
} else if (myArray[i].init_shmem_cb) {
// Call the second function if it's initialized
myArray[i].init_shmem_cb(dummyStats);
printf("Array element %d - Called init_shmem_cb\n", i + 1);
} else {
printf("Array element %d - No function initialized\n", i + 1);
}
}
return 0;
}
|
