src/plugins/ctf/common/metadata/ctf-meta-update-text-array-sequence.c

   1 /*
   2  * Copyright 2018 - Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  */
  14
  15 #include <babeltrace2/babeltrace.h>
  16 #include "common/macros.h"
  17 #include "common/assert.h"
  18 #include <glib.h>
  19 #include <stdint.h>
  20 #include <string.h>
  21 #include <inttypes.h>
  22
  23 #include "ctf-meta-visitors.h"
  24
  25 static inline
  26 int set_text_array_sequence_field_class(struct ctf_field_class *fc)
  27 {
  28         int ret = 0;
  29         uint64_t i;
  30
  31         if (!fc) {
  32                 goto end;
  33         }
  34
  35         switch (fc->type) {
  36         case CTF_FIELD_CLASS_TYPE_STRUCT:
  37         {
  38                 struct ctf_field_class_struct *struct_fc = (void *) fc;
  39
  40                 for (i = 0; i < struct_fc->members->len; i++) {
  41                         struct ctf_named_field_class *named_fc =
  42                                 ctf_field_class_struct_borrow_member_by_index(
  43                                         struct_fc, i);
  44
  45                         ret = set_text_array_sequence_field_class(named_fc->fc);
  46                         if (ret) {
  47                                 goto end;
  48                         }
  49                 }
  50
  51                 break;
  52         }
  53         case CTF_FIELD_CLASS_TYPE_VARIANT:
  54         {
  55                 struct ctf_field_class_variant *var_fc = (void *) fc;
  56
  57                 for (i = 0; i < var_fc->options->len; i++) {
  58                         struct ctf_named_field_class *named_fc =
  59                                 ctf_field_class_variant_borrow_option_by_index(
  60                                         var_fc, i);
  61
  62                         ret = set_text_array_sequence_field_class(named_fc->fc);
  63                         if (ret) {
  64                                 goto end;
  65                         }
  66                 }
  67
  68                 break;
  69         }
  70         case CTF_FIELD_CLASS_TYPE_ARRAY:
  71         case CTF_FIELD_CLASS_TYPE_SEQUENCE:
  72         {
  73                 struct ctf_field_class_array_base *array_fc = (void *) fc;
  74
  75                 if (array_fc->elem_fc->type == CTF_FIELD_CLASS_TYPE_INT ||
  76                                 array_fc->elem_fc->type == CTF_FIELD_CLASS_TYPE_ENUM) {
  77                         struct ctf_field_class_int *int_fc =
  78                                 (void *) array_fc->elem_fc;
  79
  80                         if (int_fc->base.base.alignment == 8 &&
  81                                         int_fc->base.size == 8 &&
  82                                         int_fc->encoding == CTF_ENCODING_UTF8) {
  83                                 array_fc->is_text = true;
  84
  85                                 /*
  86                                  * Force integer element to be unsigned;
  87                                  * this makes the decoder enter a single
  88                                  * path when reading a text
  89                                  * array/sequence and we can safely
  90                                  * decode bytes as characters anyway.
  91                                  */
  92                                 int_fc->is_signed = false;
  93                         }
  94                 }
  95
  96                 ret = set_text_array_sequence_field_class(array_fc->elem_fc);
  97                 if (ret) {
  98                         goto end;
  99                 }
 100
 101                 break;
 102         }
 103         default:
 104                 break;
 105         }
 106
 107 end:
 108         return ret;
 109 }
 110
 111 BT_HIDDEN
 112 int ctf_trace_class_update_text_array_sequence(struct ctf_trace_class *ctf_tc)
 113 {
 114         int ret = 0;
 115         uint64_t i;
 116
 117         if (!ctf_tc->is_translated) {
 118                 ret = set_text_array_sequence_field_class(
 119                         ctf_tc->packet_header_fc);
 120                 if (ret) {
 121                         goto end;
 122                 }
 123         }
 124
 125         for (i = 0; i < ctf_tc->stream_classes->len; i++) {
 126                 struct ctf_stream_class *sc = ctf_tc->stream_classes->pdata[i];
 127                 uint64_t j;
 128
 129                 if (!sc->is_translated) {
 130                         ret = set_text_array_sequence_field_class(
 131                                 sc->packet_context_fc);
 132                         if (ret) {
 133                                 goto end;
 134                         }
 135
 136                         ret = set_text_array_sequence_field_class(
 137                                 sc->event_header_fc);
 138                         if (ret) {
 139                                 goto end;
 140                         }
 141
 142                         ret = set_text_array_sequence_field_class(
 143                                 sc->event_common_context_fc);
 144                         if (ret) {
 145                                 goto end;
 146                         }
 147                 }
 148
 149                 for (j = 0; j < sc->event_classes->len; j++) {
 150                         struct ctf_event_class *ec =
 151                                 sc->event_classes->pdata[j];
 152
 153                         if (ec->is_translated) {
 154                                 continue;
 155                         }
 156
 157                         ret = set_text_array_sequence_field_class(
 158                                 ec->spec_context_fc);
 159                         if (ret) {
 160                                 goto end;
 161                         }
 162
 163                         ret = set_text_array_sequence_field_class(
 164                                 ec->payload_fc);
 165                         if (ret) {
 166                                 goto end;
 167                         }
 168                 }
 169         }
 170
 171 end:
 172         return ret;
 173 }