src/common/dynamic-array.c

   1 /*
   2  * Copyright (C) 2019 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License, version 2.1 only,
   6  * as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
  11  * for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this program; if not, write to the Free Software Foundation,
  15  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  16  */
  17
  18 #include <common/dynamic-array.h>
  19
  20 LTTNG_HIDDEN
  21 void lttng_dynamic_array_init(struct lttng_dynamic_array *array,
  22                 size_t element_size)
  23 {
  24         lttng_dynamic_buffer_init(&array->buffer);
  25         array->element_size = element_size;
  26 }
  27
  28 LTTNG_HIDDEN
  29 int lttng_dynamic_array_add_element(struct lttng_dynamic_array *array,
  30                 const void *element)
  31 {
  32         int ret;
  33
  34         if (!array || !element) {
  35                 ret = -1;
  36                 goto end;
  37         }
  38
  39         ret = lttng_dynamic_buffer_append(&array->buffer, element,
  40                         array->element_size);
  41         if (ret) {
  42                 goto end;
  43         }
  44         array->size++;
  45 end:
  46         return ret;
  47 }
  48
  49 LTTNG_HIDDEN
  50 void lttng_dynamic_array_reset(struct lttng_dynamic_array *array,
  51                 lttng_dynamic_array_element_destructor destructor)
  52 {
  53         if (destructor) {
  54                 size_t i;
  55
  56                 for (i = 0; i < lttng_dynamic_array_get_count(array); i++) {
  57                         destructor(lttng_dynamic_array_get_element(array, i));
  58                 }
  59         }
  60
  61         lttng_dynamic_buffer_reset(&array->buffer);
  62         array->size = 0;
  63 }
  64
  65 LTTNG_HIDDEN
  66 void lttng_dynamic_pointer_array_init(
  67                 struct lttng_dynamic_pointer_array *array)
  68 {
  69         lttng_dynamic_array_init(&array->array, sizeof(void *));
  70 }
  71
  72 /* Release any memory used by the dynamic array. */
  73 LTTNG_HIDDEN
  74 void lttng_dynamic_pointer_array_reset(
  75                 struct lttng_dynamic_pointer_array *array,
  76                 lttng_dynamic_pointer_array_destructor destructor)
  77 {
  78         if (destructor) {
  79                 size_t i, count = lttng_dynamic_pointer_array_get_count(array);
  80
  81                 for (i = 0; i < count; i++) {
  82                         void *ptr = lttng_dynamic_pointer_array_get_pointer(
  83                                         array, i);
  84                         destructor(ptr);
  85                 }
  86         }
  87         lttng_dynamic_array_reset(&array->array, NULL);
  88 }