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// utils/memory.h
// helper functions for dealing with memory management
#include <stddef.h>
#define ARR_LEN(arr) (sizeof(arr) / sizeof(arr[0]))
#define MAX_ALLOC_ATTEMPTS 3
// tries malloc MAX_ALLOC_ATTEMPTS times, if all fail - exits the program
// params:
// - size - count of bytes to allocate
// returns:
// pointer to the allocated memory
extern void *safe_malloc(size_t size);
// tries realloc MAX_ALLOC_ATTEMPTS times, if all fail - exits the program
// params:
// - ptr - pointer to the memory to reallocate
// - size - new size of the memory
// returns:
// pointer to the reallocated memory
extern void *safe_realloc(void *ptr, size_t size);
// append to array, expand if necessary
// params:
// - arr - array to append to
// - el_size - size of an array element
// - len - pointer to the length of the array
// - cap - pointer to the capacity of the array
// - val - pointer to the value to append to the array
// returns:
// new pointer to the array (different if it was realloced)
extern void *array_append(void *arr, size_t el_size, size_t *len, size_t *cap, void *val);
// concatenate 2 arrays, expand if necessary
// params:
// - arr1 - first array (destination)
// - el_size - size of an array element
// - len1 - pointer to the length of arr1
// - cap - pointer to the capacity of arr1
// - arr2 - second array
// - len2 - length of arr2
// returns:
// new pointer to the array (different if it was realloced)
extern void *array_concat(void *arr1, size_t el_size, size_t *len1, size_t *cap, void *arr2, size_t len2);
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