types/integer.c

   1 /*
   2  * integer.c
   3  *
   4  * BabelTrace - Integer 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/align.h>
  21 #include <babeltrace/format.h>
  22 #include <stdint.h>
  23
  24 static
  25 struct definition *_integer_definition_new(struct declaration *declaration,
  26                                struct definition_scope *parent_scope,
  27                                GQuark field_name, int index,
  28                                const char *root_name);
  29 static
  30 void _integer_definition_free(struct definition *definition);
  31
  32 static
  33 void _integer_declaration_free(struct declaration *declaration)
  34 {
  35         struct declaration_integer *integer_declaration =
  36                 container_of(declaration, struct declaration_integer, p);
  37         g_free(integer_declaration);
  38 }
  39
  40 struct declaration_integer *
  41         integer_declaration_new(size_t len, int byte_order,
  42                          int signedness, size_t alignment, int base)
  43 {
  44         struct declaration_integer *integer_declaration;
  45
  46         integer_declaration = g_new(struct declaration_integer, 1);
  47         integer_declaration->p.id = CTF_TYPE_INTEGER;
  48         integer_declaration->p.alignment = alignment;
  49         integer_declaration->p.declaration_free = _integer_declaration_free;
  50         integer_declaration->p.definition_free = _integer_definition_free;
  51         integer_declaration->p.definition_new = _integer_definition_new;
  52         integer_declaration->p.ref = 1;
  53         integer_declaration->len = len;
  54         integer_declaration->byte_order = byte_order;
  55         integer_declaration->signedness = signedness;
  56         integer_declaration->base = base;
  57         return integer_declaration;
  58 }
  59
  60 static
  61 struct definition *
  62         _integer_definition_new(struct declaration *declaration,
  63                                 struct definition_scope *parent_scope,
  64                                 GQuark field_name, int index,
  65                                 const char *root_name)
  66 {
  67         struct declaration_integer *integer_declaration =
  68                 container_of(declaration, struct declaration_integer, p);
  69         struct definition_integer *integer;
  70         int ret;
  71
  72         integer = g_new(struct definition_integer, 1);
  73         declaration_ref(&integer_declaration->p);
  74         integer->p.declaration = declaration;
  75         integer->declaration = integer_declaration;
  76         integer->p.ref = 1;
  77         /*
  78          * Use INT_MAX order to ensure that all fields of the parent
  79          * scope are seen as being prior to this scope.
  80          */
  81         integer->p.index = root_name ? INT_MAX : index;
  82         integer->p.name = field_name;
  83         integer->p.path = new_definition_path(parent_scope, field_name,
  84                                         root_name);
  85         integer->value._unsigned = 0;
  86         ret = register_field_definition(field_name, &integer->p,
  87                                         parent_scope);
  88         assert(!ret);
  89         return &integer->p;
  90 }
  91
  92 static
  93 void _integer_definition_free(struct definition *definition)
  94 {
  95         struct definition_integer *integer =
  96                 container_of(definition, struct definition_integer, p);
  97
  98         declaration_unref(integer->p.declaration);
  99         g_free(integer);
 100 }