formats/ctf/types/enum.c

   1 /*
   2  * Common Trace Format
   3  *
   4  * Enumeration mapping strings (quarks) from/to integers.
   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/ctf/types.h>
  20 #include <stdint.h>
  21 #include <glib.h>
  22
  23 int ctf_enum_read(struct stream_pos *ppos, struct definition *definition)
  24 {
  25         struct definition_enum *enum_definition =
  26                 container_of(definition, struct definition_enum, p);
  27         const struct declaration_enum *enum_declaration =
  28                 enum_definition->declaration;
  29         struct definition_integer *integer_definition =
  30                 enum_definition->integer;
  31         const struct declaration_integer *integer_declaration =
  32                 integer_definition->declaration;
  33         GArray *qs;
  34         int ret;
  35
  36         ret = ctf_integer_read(ppos, &integer_definition->p);
  37         if (ret)
  38                 return ret;
  39         if (!integer_declaration->signedness)
  40                 qs = enum_uint_to_quark_set(enum_declaration,
  41                         integer_definition->value._unsigned);
  42         else
  43                 qs = enum_int_to_quark_set(enum_declaration,
  44                         integer_definition->value._signed);
  45         assert(qs);
  46         /* unref previous quark set */
  47         if (enum_definition->value)
  48                 g_array_unref(enum_definition->value);
  49         enum_definition->value = qs;
  50         return 0;
  51 }
  52
  53 int ctf_enum_write(struct stream_pos *pos, struct definition *definition)
  54 {
  55         struct definition_enum *enum_definition =
  56                 container_of(definition, struct definition_enum, p);
  57         struct definition_integer *integer_definition =
  58                 enum_definition->integer;
  59
  60         return ctf_integer_write(pos, &integer_definition->p);
  61 }