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 static
  29 void _integer_definition_free(struct definition *definition);
  30
  31 void integer_copy(struct stream_pos *dest, const struct format *fdest,
  32                   struct stream_pos *src, const struct format *fsrc,
  33                   struct definition *definition)
  34 {
  35         struct definition_integer *integer =
  36                 container_of(definition, struct definition_integer, p);
  37         struct declaration_integer *integer_declaration = integer->declaration;
  38
  39         if (!integer_declaration->signedness) {
  40                 uint64_t v;
  41
  42                 v = fsrc->uint_read(src, integer_declaration);
  43                 if (fdest)
  44                         fdest->uint_write(dest, integer_declaration, v);
  45         } else {
  46                 int64_t v;
  47
  48                 v = fsrc->int_read(src, integer_declaration);
  49                 if (fdest)
  50                         fdest->int_write(dest, integer_declaration, v);
  51         }
  52 }
  53
  54 static
  55 void _integer_declaration_free(struct declaration *declaration)
  56 {
  57         struct declaration_integer *integer_declaration =
  58                 container_of(declaration, struct declaration_integer, p);
  59         g_free(integer_declaration);
  60 }
  61
  62 struct declaration_integer *
  63         integer_declaration_new(size_t len, int byte_order,
  64                          int signedness, size_t alignment)
  65 {
  66         struct declaration_integer *integer_declaration;
  67
  68         integer_declaration = g_new(struct declaration_integer, 1);
  69         integer_declaration->p.id = CTF_TYPE_INTEGER;
  70         integer_declaration->p.alignment = alignment;
  71         integer_declaration->p.copy = integer_copy;
  72         integer_declaration->p.declaration_free = _integer_declaration_free;
  73         integer_declaration->p.definition_free = _integer_definition_free;
  74         integer_declaration->p.definition_new = _integer_definition_new;
  75         integer_declaration->p.ref = 1;
  76         integer_declaration->len = len;
  77         integer_declaration->byte_order = byte_order;
  78         integer_declaration->signedness = signedness;
  79         return integer_declaration;
  80 }
  81
  82 static
  83 struct definition *
  84         _integer_definition_new(struct declaration *declaration,
  85                                 struct definition_scope *parent_scope,
  86                                 GQuark field_name, int index)
  87 {
  88         struct declaration_integer *integer_declaration =
  89                 container_of(declaration, struct declaration_integer, p);
  90         struct definition_integer *integer;
  91
  92         integer = g_new(struct definition_integer, 1);
  93         declaration_ref(&integer_declaration->p);
  94         integer->p.declaration = declaration;
  95         integer->declaration = integer_declaration;
  96         integer->p.ref = 1;
  97         integer->p.index = index;
  98         integer->value._unsigned = 0;
  99         return &integer->p;
 100 }
 101
 102 static
 103 void _integer_definition_free(struct definition *definition)
 104 {
 105         struct definition_integer *integer =
 106                 container_of(definition, struct definition_integer, p);
 107
 108         declaration_unref(integer->p.declaration);
 109         g_free(integer);
 110 }