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