| /* |
| general.c - Part of libsensors, a Linux library for reading sensor data. |
| Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
| MA 02110-1301 USA. |
| */ |
| |
| #include "error.h" |
| #include "general.h" |
| #include <errno.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| |
| |
| #define A_BUNCH 16 |
| |
| void sensors_malloc_array(void *list, int *num_el, int *max_el, int el_size) |
| { |
| void **my_list = (void **)list; |
| |
| *my_list = malloc(el_size*A_BUNCH); |
| if (! *my_list) |
| sensors_fatal_error(__func__, "Allocating new elements"); |
| *max_el = A_BUNCH; |
| *num_el = 0; |
| } |
| |
| void sensors_free_array(void *list, int *num_el, int *max_el) |
| { |
| void **my_list = (void **)list; |
| |
| free(*my_list); |
| *my_list = NULL; |
| *num_el = 0; |
| *max_el = 0; |
| } |
| |
| void sensors_add_array_el(const void *el, void *list, int *num_el, |
| int *max_el, int el_size) |
| { |
| int new_max_el; |
| void **my_list = (void *)list; |
| if (*num_el + 1 > *max_el) { |
| new_max_el = *max_el + A_BUNCH; |
| *my_list = realloc(*my_list, new_max_el * el_size); |
| if (! *my_list) |
| sensors_fatal_error(__func__, |
| "Allocating new elements"); |
| *max_el = new_max_el; |
| } |
| memcpy(((char *) *my_list) + *num_el * el_size, el, el_size); |
| (*num_el) ++; |
| } |
| |
| void sensors_add_array_els(const void *els, int nr_els, void *list, |
| int *num_el, int *max_el, int el_size) |
| { |
| int new_max_el; |
| void **my_list = (void *)list; |
| if (*num_el + nr_els > *max_el) { |
| new_max_el = (*max_el + nr_els + A_BUNCH); |
| new_max_el -= new_max_el % A_BUNCH; |
| *my_list = realloc(*my_list, new_max_el * el_size); |
| if (! *my_list) |
| sensors_fatal_error(__func__, |
| "Allocating new elements"); |
| *max_el = new_max_el; |
| } |
| memcpy(((char *)*my_list) + *num_el * el_size, els, el_size * nr_els); |
| *num_el += nr_els; |
| } |