memmanage.h

#ifndef MEM_MANAGE
#define MEM_MANAGE

#include <stdlib.h>
#include <stdbool.h>

typedef struct {
    unsigned long i;
    _Bool found;
} mem_result;

// Doesn't make sense to make it static because it's a header, but whatever
static void **mem_add;
static unsigned long qty;
static unsigned long cap;

static void mem_expand()
{
    if (qty == cap)
        mem_add = realloc(mem_add, (cap += 1024) * sizeof(void*));
}

mem_result mem_find(void *ptr)
{
    unsigned long i = 0;

    if (!ptr) i = qty;

    for (; i < qty; ++i) {
        if (ptr == mem_add[i])
            break;
    }

    mem_result r = {
        .i = i,
        .found = i != qty ? true : false
    };

    return r;
}

void mem_push(void *ptr)
{
    mem_expand();
    mem_add[qty++] = ptr;
}

void *mem_alloc(size_t num)
{
    if (!num) return NULL;

    void *ptr = calloc(num, sizeof(char));
    mem_push(ptr);
    return ptr;
}

void *mem_realloc(void *ptr, size_t new_size)
{
    if (!new_size) return NULL;

    mem_result m = mem_find(ptr);

    if (m.found) {
        ptr = realloc(ptr, new_size);
        mem_add[m.i] = ptr;
    } else
        ptr = mem_alloc(new_size);

    return ptr;
}

void mem_clean(void)
{
    for (unsigned long i = 0; i < qty; ++i)
        free(mem_add[i]);
    free(mem_add);
}

#endif