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

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2018 Philippe Proulx <pproulx@efficios.com>
   5  */
   6
   7 #include <stdint.h>
   8
   9 #include "ctf-meta-visitors.hpp"
  10
  11 static inline int set_text_array_sequence_field_class(struct ctf_field_class *fc)
  12 {
  13     int ret = 0;
  14     uint64_t i;
  15
  16     if (!fc) {
  17         goto end;
  18     }
  19
  20     switch (fc->type) {
  21     case CTF_FIELD_CLASS_TYPE_STRUCT:
  22     {
  23         struct ctf_field_class_struct *struct_fc = ctf_field_class_as_struct(fc);
  24
  25         for (i = 0; i < struct_fc->members->len; i++) {
  26             struct ctf_named_field_class *named_fc =
  27                 ctf_field_class_struct_borrow_member_by_index(struct_fc, i);
  28
  29             ret = set_text_array_sequence_field_class(named_fc->fc);
  30             if (ret) {
  31                 goto end;
  32             }
  33         }
  34
  35         break;
  36     }
  37     case CTF_FIELD_CLASS_TYPE_VARIANT:
  38     {
  39         struct ctf_field_class_variant *var_fc = ctf_field_class_as_variant(fc);
  40
  41         for (i = 0; i < var_fc->options->len; i++) {
  42             struct ctf_named_field_class *named_fc =
  43                 ctf_field_class_variant_borrow_option_by_index(var_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_ARRAY:
  54     case CTF_FIELD_CLASS_TYPE_SEQUENCE:
  55     {
  56         struct ctf_field_class_array_base *array_fc = ctf_field_class_as_array_base(fc);
  57
  58         if (array_fc->elem_fc->type == CTF_FIELD_CLASS_TYPE_INT ||
  59             array_fc->elem_fc->type == CTF_FIELD_CLASS_TYPE_ENUM) {
  60             struct ctf_field_class_int *int_fc = ctf_field_class_as_int(array_fc->elem_fc);
  61
  62             if (int_fc->base.base.alignment == 8 && int_fc->base.size == 8 &&
  63                 int_fc->encoding == CTF_ENCODING_UTF8) {
  64                 array_fc->is_text = true;
  65
  66                 /*
  67                  * Force integer element to be unsigned;
  68                  * this makes the decoder enter a single
  69                  * path when reading a text
  70                  * array/sequence and we can safely
  71                  * decode bytes as characters anyway.
  72                  */
  73                 int_fc->is_signed = false;
  74             }
  75         }
  76
  77         ret = set_text_array_sequence_field_class(array_fc->elem_fc);
  78         if (ret) {
  79             goto end;
  80         }
  81
  82         break;
  83     }
  84     default:
  85         break;
  86     }
  87
  88 end:
  89     return ret;
  90 }
  91
  92 int ctf_trace_class_update_text_array_sequence(struct ctf_trace_class *ctf_tc)
  93 {
  94     int ret = 0;
  95     uint64_t i;
  96
  97     if (!ctf_tc->is_translated) {
  98         ret = set_text_array_sequence_field_class(ctf_tc->packet_header_fc);
  99         if (ret) {
 100             goto end;
 101         }
 102     }
 103
 104     for (i = 0; i < ctf_tc->stream_classes->len; i++) {
 105         ctf_stream_class *sc = (ctf_stream_class *) ctf_tc->stream_classes->pdata[i];
 106         uint64_t j;
 107
 108         if (!sc->is_translated) {
 109             ret = set_text_array_sequence_field_class(sc->packet_context_fc);
 110             if (ret) {
 111                 goto end;
 112             }
 113
 114             ret = set_text_array_sequence_field_class(sc->event_header_fc);
 115             if (ret) {
 116                 goto end;
 117             }
 118
 119             ret = set_text_array_sequence_field_class(sc->event_common_context_fc);
 120             if (ret) {
 121                 goto end;
 122             }
 123         }
 124
 125         for (j = 0; j < sc->event_classes->len; j++) {
 126             struct ctf_event_class *ec = (ctf_event_class *) sc->event_classes->pdata[j];
 127
 128             if (ec->is_translated) {
 129                 continue;
 130             }
 131
 132             ret = set_text_array_sequence_field_class(ec->spec_context_fc);
 133             if (ret) {
 134                 goto end;
 135             }
 136
 137             ret = set_text_array_sequence_field_class(ec->payload_fc);
 138             if (ret) {
 139                 goto end;
 140             }
 141         }
 142     }
 143
 144 end:
 145     return ret;
 146 }