formats/ctf/types/enum.c

   1 /*
   2  * Common Trace Format
   3  *
   4  * Enumeration mapping strings (quarks) from/to integers.
   5  *
   6  * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
   7  *
   8  * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   9  *
  10  * Permission is hereby granted, free of charge, to any person obtaining a copy
  11  * of this software and associated documentation files (the "Software"), to deal
  12  * in the Software without restriction, including without limitation the rights
  13  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14  * copies of the Software, and to permit persons to whom the Software is
  15  * furnished to do so, subject to the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be included in
  18  * all copies or substantial portions of the Software.
  19  */
  20
  21 #include <babeltrace/ctf/types.h>
  22 #include <inttypes.h>
  23 #include <stdint.h>
  24 #include <glib.h>
  25
  26 int ctf_enum_read(struct stream_pos *ppos, struct definition *definition)
  27 {
  28         struct definition_enum *enum_definition =
  29                 container_of(definition, struct definition_enum, p);
  30         const struct declaration_enum *enum_declaration =
  31                 enum_definition->declaration;
  32         struct definition_integer *integer_definition =
  33                 enum_definition->integer;
  34         const struct declaration_integer *integer_declaration =
  35                 integer_definition->declaration;
  36         GArray *qs;
  37         int ret;
  38
  39         ret = ctf_integer_read(ppos, &integer_definition->p);
  40         if (ret)
  41                 return ret;
  42         if (!integer_declaration->signedness) {
  43                 qs = enum_uint_to_quark_set(enum_declaration,
  44                         integer_definition->value._unsigned);
  45                 if (!qs) {
  46                         fprintf(stderr, "[warning] Unknown value %" PRIu64 " in enum.\n",
  47                                 integer_definition->value._unsigned);
  48                 }
  49         } else {
  50                 qs = enum_int_to_quark_set(enum_declaration,
  51                         integer_definition->value._signed);
  52                 if (!qs) {
  53                         fprintf(stderr, "[warning] Unknown value %" PRId64 " in enum.\n",
  54                                 integer_definition->value._signed);
  55                 }
  56         }
  57         /* unref previous quark set */
  58         if (enum_definition->value)
  59                 g_array_unref(enum_definition->value);
  60         enum_definition->value = qs;
  61         return 0;
  62 }
  63
  64 int ctf_enum_write(struct stream_pos *pos, struct definition *definition)
  65 {
  66         struct definition_enum *enum_definition =
  67                 container_of(definition, struct definition_enum, p);
  68         struct definition_integer *integer_definition =
  69                 enum_definition->integer;
  70
  71         return ctf_integer_write(pos, &integer_definition->p);
  72 }