src/core/timeseries.c

   1 /*
   2  * SysDB - src/core/timeseries.c
   3  * Copyright (C) 2014 Sebastian 'tokkee' Harl <sh@tokkee.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  17  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  18  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
  19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #if HAVE_CONFIG_H
  29 #       include "config.h"
  30 #endif /* HAVE_CONFIG_H */
  31
  32 #include "sysdb.h"
  33 #include "core/timeseries.h"
  34
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 /*
  39  * public API
  40  */
  41
  42 sdb_timeseries_t *
  43 sdb_timeseries_create(size_t data_names_len, const char * const *data_names,
  44                 size_t data_len)
  45 {
  46         sdb_timeseries_t *ts;
  47         size_t i;
  48
  49         ts = calloc(1, sizeof(*ts));
  50         if (! ts)
  51                 return NULL;
  52
  53         ts->data = calloc(data_names_len, sizeof(*ts->data));
  54         if (! ts->data) {
  55                 sdb_timeseries_destroy(ts);
  56                 return NULL;
  57         }
  58         ts->data_names_len = data_names_len;
  59         for (i = 0; i < data_names_len; ++i) {
  60                 ts->data[i] = calloc(data_len, sizeof(**ts->data));
  61                 if (! ts->data[i]) {
  62                         sdb_timeseries_destroy(ts);
  63                         return NULL;
  64                 }
  65         }
  66         ts->data_len = data_len;
  67
  68         ts->data_names = calloc(data_names_len, sizeof(*ts->data_names));
  69         if (! ts->data_names) {
  70                 sdb_timeseries_destroy(ts);
  71                 return NULL;
  72         }
  73         for (i = 0; i < data_names_len; ++i) {
  74                 ts->data_names[i] = strdup(data_names[i]);
  75                 if (! ts->data_names[i]) {
  76                         sdb_timeseries_destroy(ts);
  77                         return NULL;
  78                 }
  79         }
  80         return ts;
  81 } /* sdb_timeseries_create */
  82
  83 void
  84 sdb_timeseries_destroy(sdb_timeseries_t *ts)
  85 {
  86         size_t i;
  87
  88         if (! ts)
  89                 return;
  90
  91         if (ts->data) {
  92                 for (i = 0; i < ts->data_names_len; ++i) {
  93                         if (ts->data[i])
  94                                 free(ts->data[i]);
  95                         ts->data[i] = NULL;
  96                 }
  97                 free(ts->data);
  98         }
  99         ts->data = NULL;
 100         ts->data_len = 0;
 101
 102         if (ts->data_names) {
 103                 for (i = 0; i < ts->data_names_len; ++i) {
 104                         if (ts->data_names[i])
 105                                 free(ts->data_names[i]);
 106                         ts->data_names[i] = NULL;
 107                 }
 108                 free(ts->data_names);
 109         }
 110         ts->data_names = NULL;
 111         ts->data_names_len = 0;
 112         free(ts);
 113 } /* sdb_timeseries_destroy */
 114
 115 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */
 116