qdevices/dynar.h

   1 /*
   2  * Copyright (c) 2015-2017 Red Hat, Inc.
   3  *
   4  * All rights reserved.
   5  *
   6  * Author: Jan Friesse (jfriesse@redhat.com)
   7  *
   8  * This software licensed under BSD license, the text of which follows:
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions are met:
  12  *
  13  * - Redistributions of source code must retain the above copyright notice,
  14  *   this list of conditions and the following disclaimer.
  15  * - Redistributions in binary form must reproduce the above copyright notice,
  16  *   this list of conditions and the following disclaimer in the documentation
  17  *   and/or other materials provided with the distribution.
  18  * - Neither the name of the Red Hat, Inc. nor the names of its
  19  *   contributors may be used to endorse or promote products derived from this
  20  *   software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  32  * THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #ifndef _DYNAR_H_
  36 #define _DYNAR_H_
  37
  38 #include <sys/types.h>
  39 #include <inttypes.h>
  40
  41 #ifdef __cplusplus
  42 extern "C" {
  43 #endif
  44
  45 /*
  46  * Dynamic array structure
  47  */
  48 struct dynar {
  49         char *data;
  50         size_t size;
  51         size_t allocated;
  52         size_t maximum_size;
  53 };
  54
  55 extern void      dynar_init(struct dynar *array, size_t maximum_size);
  56
  57 extern void      dynar_destroy(struct dynar *array);
  58
  59 extern void      dynar_clean(struct dynar *array);
  60
  61 extern size_t    dynar_size(const struct dynar *array);
  62
  63 extern size_t    dynar_max_size(const struct dynar *array);
  64
  65 extern void      dynar_set_max_size(struct dynar *array, size_t maximum_size);
  66
  67 extern char     *dynar_data(const struct dynar *array);
  68
  69 extern int       dynar_cat(struct dynar *array, const void *src, size_t size);
  70
  71 extern int       dynar_prealloc(struct dynar *array, size_t size);
  72
  73 extern int       dynar_prepend(struct dynar *array, const void *src, size_t size);
  74
  75 extern int       dynar_set_size(struct dynar *array, size_t size);
  76
  77 #ifdef __cplusplus
  78 }
  79 #endif
  80
  81 #endif /* _DYNAR_H_ */