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                 integer->value._unsigned = v;
  44                 if (fdest)
  45                         fdest->uint_write(dest, integer_declaration, v);
  46         } else {
  47                 int64_t v;
  48
  49                 v = fsrc->int_read(src, integer_declaration);
  50                 integer->value._signed = v;
  51                 if (fdest)
  52                         fdest->int_write(dest, integer_declaration, v);
  53         }
  54 }
  55
  56 static
  57 void _integer_declaration_free(struct declaration *declaration)
  58 {
  59         struct declaration_integer *integer_declaration =
  60                 container_of(declaration, struct declaration_integer, p);
  61         g_free(integer_declaration);
  62 }
  63
  64 struct declaration_integer *
  65         integer_declaration_new(size_t len, int byte_order,
  66                          int signedness, size_t alignment)
  67 {
  68         struct declaration_integer *integer_declaration;
  69
  70         integer_declaration = g_new(struct declaration_integer, 1);
  71         integer_declaration->p.id = CTF_TYPE_INTEGER;
  72         integer_declaration->p.alignment = alignment;
  73         integer_declaration->p.copy = integer_copy;
  74         integer_declaration->p.declaration_free = _integer_declaration_free;
  75         integer_declaration->p.definition_free = _integer_definition_free;
  76         integer_declaration->p.definition_new = _integer_definition_new;
  77         integer_declaration->p.ref = 1;
  78         integer_declaration->len = len;
  79         integer_declaration->byte_order = byte_order;
  80         integer_declaration->signedness = signedness;
  81         return integer_declaration;
  82 }
  83
  84 static
  85 struct definition *
  86         _integer_definition_new(struct declaration *declaration,
  87                                 struct definition_scope *parent_scope,
  88                                 GQuark field_name, int index)
  89 {
  90         struct declaration_integer *integer_declaration =
  91                 container_of(declaration, struct declaration_integer, p);
  92         struct definition_integer *integer;
  93
  94         integer = g_new(struct definition_integer, 1);
  95         declaration_ref(&integer_declaration->p);
  96         integer->p.declaration = declaration;
  97         integer->declaration = integer_declaration;
  98         integer->p.ref = 1;
  99         integer->p.index = index;
 100         integer->value._unsigned = 0;
 101         return &integer->p;
 102 }
 103
 104 static
 105 void _integer_definition_free(struct definition *definition)
 106 {
 107         struct definition_integer *integer =
 108                 container_of(definition, struct definition_integer, p);
 109
 110         declaration_unref(integer->p.declaration);
 111         g_free(integer);
 112 }