types/array.c

   1 /*
   2  * array.c
   3  *
   4  * BabelTrace - Array Type Converter
   5  *
   6  * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  */
  18
  19 #include <babeltrace/compiler.h>
  20 #include <babeltrace/format.h>
  21
  22 static
  23 struct definition *_array_definition_new(struct declaration *declaration,
  24                         struct definition_scope *parent_scope);
  25 static
  26 void _array_definition_free(struct definition *definition);
  27
  28 void array_copy(struct stream_pos *dest, const struct format *fdest,
  29                 struct stream_pos *src, const struct format *fsrc,
  30                 struct definition *definition)
  31 {
  32         struct definition_array *array =
  33                 container_of(definition, struct definition_array, p);
  34         struct declaration_array *array_declaration = array->declaration;
  35         uint64_t i;
  36
  37         fsrc->array_begin(src, array_declaration);
  38         fdest->array_begin(dest, array_declaration);
  39
  40         for (i = 0; i < array_declaration->len; i++) {
  41                 struct definition *elem = array->current_element.definition;
  42                 elem->declaration->copy(dest, fdest, src, fsrc, elem);
  43         }
  44         fsrc->array_end(src, array_declaration);
  45         fdest->array_end(dest, array_declaration);
  46 }
  47
  48 static
  49 void _array_declaration_free(struct declaration *declaration)
  50 {
  51         struct declaration_array *array_declaration =
  52                 container_of(declaration, struct declaration_array, p);
  53
  54         free_declaration_scope(array_declaration->scope);
  55         declaration_unref(array_declaration->elem);
  56         g_free(array_declaration);
  57 }
  58
  59 struct declaration_array *
  60         array_declaration_new(const char *name, size_t len,
  61                               struct declaration *elem_declaration,
  62                               struct declaration_scope *parent_scope)
  63 {
  64         struct declaration_array *array_declaration;
  65         struct declaration *declaration;
  66
  67         array_declaration = g_new(struct declaration_array, 1);
  68         declaration = &array_declaration->p;
  69         array_declaration->len = len;
  70         declaration_ref(elem_declaration);
  71         array_declaration->elem = elem_declaration;
  72         array_declaration->scope = new_declaration_scope(parent_scope);
  73         declaration->id = CTF_TYPE_ARRAY;
  74         declaration->name = g_quark_from_string(name);
  75         /* No need to align the array, the first element will align itself */
  76         declaration->alignment = 1;
  77         declaration->copy = array_copy;
  78         declaration->declaration_free = _array_declaration_free;
  79         declaration->definition_new = _array_definition_new;
  80         declaration->definition_free = _array_definition_free;
  81         declaration->ref = 1;
  82         return array_declaration;
  83 }
  84
  85 static
  86 struct definition *
  87         _array_definition_new(struct declaration *declaration,
  88                               struct definition_scope *parent_scope)
  89 {
  90         struct declaration_array *array_declaration =
  91                 container_of(declaration, struct declaration_array, p);
  92         struct definition_array *array;
  93
  94         array = g_new(struct definition_array, 1);
  95         declaration_ref(&array_declaration->p);
  96         array->p.declaration = declaration;
  97         array->declaration = array_declaration;
  98         array->p.ref = 1;
  99         array->scope = new_definition_scope(parent_scope);
 100         array->current_element.definition =
 101                 array_declaration->elem->definition_new(array_declaration->elem,
 102                                                   parent_scope);
 103         return &array->p;
 104 }
 105
 106 static
 107 void _array_definition_free(struct definition *definition)
 108 {
 109         struct definition_array *array =
 110                 container_of(definition, struct definition_array, p);
 111         struct definition *elem_definition =
 112                 array->current_element.definition;
 113
 114         elem_definition->declaration->definition_free(elem_definition);
 115         free_definition_scope(array->scope);
 116         declaration_unref(array->p.declaration);
 117         g_free(array);
 118 }