typedef struct {
	unsigned int count;
	unsigned int capacity;
	int *fds;
} rb_fd_list;

int
rb_fd_list_reset(rb_fd_list *list) {
	int *mem;

	mem = realloc(list->fds, sizeof(int) * INITIAL_FD_LIST_CAPACITY);
	if (mem == NULL) {
		return 0;
	} else {
		list->fds = mem;
		list->capacity = INITIAL_FD_LIST_CAPACITY;
		list->count = 0;
		return 1;
	}
}

int
rb_fd_list_push(rb_fd_list *list, int fd) {
	size_t new_capacity;
	int *mem;

	if (list->count >= list->capacity) {
		if (list->capacity == 0) {
			new_capacity = INITIAL_FD_LIST_CAPACITY;
		} else {
			new_capacity = list->capacity * 2;
		}
		mem = realloc(list->fds, sizeof(int) * new_capacity);
		if (mem == NULL) {
			return 0;
		} else {
			list->fds = mem;
			list->capacity = new_capacity;
		}
	}
	list->fds[list->count] = fd;
	list->count++;
	return 1;
}