src/plugins/ctf/common/src/metadata/tsdl/ctf-meta-update-value-storing-indexes.cpp

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2018 Philippe Proulx <pproulx@efficios.com>
   5  */
   6
   7 #include <stdint.h>
   8 #include <string.h>
   9
  10 #include "common/assert.h"
  11
  12 #include "ctf-meta-visitors.hpp"
  13
  14 static int update_field_class_stored_value_index(struct ctf_field_class *fc,
  15                                                  struct ctf_trace_class *tc,
  16                                                  struct ctf_stream_class *sc,
  17                                                  struct ctf_event_class *ec)
  18 {
  19     int ret = 0;
  20     uint64_t i;
  21     struct ctf_field_path *field_path = NULL;
  22     struct ctf_field_class_int *tgt_fc = NULL;
  23     uint64_t *stored_value_index = NULL;
  24
  25     if (!fc) {
  26         goto end;
  27     }
  28
  29     switch (fc->type) {
  30     case CTF_FIELD_CLASS_TYPE_VARIANT:
  31     {
  32         ctf_field_class_variant *var_fc = ctf_field_class_as_variant(fc);
  33
  34         field_path = &var_fc->tag_path;
  35         stored_value_index = &var_fc->stored_tag_index;
  36         tgt_fc = &var_fc->tag_fc->base;
  37         break;
  38     }
  39     case CTF_FIELD_CLASS_TYPE_SEQUENCE:
  40     {
  41         struct ctf_field_class_sequence *seq_fc = ctf_field_class_as_sequence(fc);
  42
  43         field_path = &seq_fc->length_path;
  44         stored_value_index = &seq_fc->stored_length_index;
  45         tgt_fc = seq_fc->length_fc;
  46         break;
  47     }
  48     default:
  49         break;
  50     }
  51
  52     if (field_path) {
  53         BT_ASSERT(tgt_fc);
  54         BT_ASSERT(tgt_fc->base.base.type == CTF_FIELD_CLASS_TYPE_INT ||
  55                   tgt_fc->base.base.type == CTF_FIELD_CLASS_TYPE_ENUM);
  56         if (tgt_fc->storing_index >= 0) {
  57             /* Already storing its value */
  58             *stored_value_index = (uint64_t) tgt_fc->storing_index;
  59         } else {
  60             /* Not storing its value: allocate new index */
  61             tgt_fc->storing_index = tc->stored_value_count;
  62             *stored_value_index = (uint64_t) tgt_fc->storing_index;
  63             tc->stored_value_count++;
  64         }
  65     }
  66
  67     switch (fc->type) {
  68     case CTF_FIELD_CLASS_TYPE_STRUCT:
  69     {
  70         struct ctf_field_class_struct *struct_fc = ctf_field_class_as_struct(fc);
  71
  72         for (i = 0; i < struct_fc->members->len; i++) {
  73             struct ctf_named_field_class *named_fc =
  74                 ctf_field_class_struct_borrow_member_by_index(struct_fc, i);
  75
  76             ret = update_field_class_stored_value_index(named_fc->fc, tc, sc, ec);
  77             if (ret) {
  78                 goto end;
  79             }
  80         }
  81
  82         break;
  83     }
  84     case CTF_FIELD_CLASS_TYPE_VARIANT:
  85     {
  86         struct ctf_field_class_variant *var_fc = ctf_field_class_as_variant(fc);
  87
  88         for (i = 0; i < var_fc->options->len; i++) {
  89             struct ctf_named_field_class *named_fc =
  90                 ctf_field_class_variant_borrow_option_by_index(var_fc, i);
  91
  92             ret = update_field_class_stored_value_index(named_fc->fc, tc, sc, ec);
  93             if (ret) {
  94                 goto end;
  95             }
  96         }
  97
  98         break;
  99     }
 100     case CTF_FIELD_CLASS_TYPE_ARRAY:
 101     case CTF_FIELD_CLASS_TYPE_SEQUENCE:
 102     {
 103         struct ctf_field_class_array_base *array_fc = ctf_field_class_as_array_base(fc);
 104
 105         ret = update_field_class_stored_value_index(array_fc->elem_fc, tc, sc, ec);
 106         if (ret) {
 107             goto end;
 108         }
 109
 110         break;
 111     }
 112     default:
 113         break;
 114     }
 115
 116 end:
 117     return ret;
 118 }
 119
 120 int ctf_trace_class_update_value_storing_indexes(struct ctf_trace_class *ctf_tc)
 121 {
 122     uint64_t i;
 123
 124     if (!ctf_tc->is_translated) {
 125         update_field_class_stored_value_index(ctf_tc->packet_header_fc, ctf_tc, NULL, NULL);
 126     }
 127
 128     for (i = 0; i < ctf_tc->stream_classes->len; i++) {
 129         uint64_t j;
 130         ctf_stream_class *sc = (ctf_stream_class *) ctf_tc->stream_classes->pdata[i];
 131
 132         if (!sc->is_translated) {
 133             update_field_class_stored_value_index(sc->packet_context_fc, ctf_tc, sc, NULL);
 134             update_field_class_stored_value_index(sc->event_header_fc, ctf_tc, sc, NULL);
 135             update_field_class_stored_value_index(sc->event_common_context_fc, ctf_tc, sc, NULL);
 136         }
 137
 138         for (j = 0; j < sc->event_classes->len; j++) {
 139             struct ctf_event_class *ec = (ctf_event_class *) sc->event_classes->pdata[j];
 140
 141             if (!ec->is_translated) {
 142                 update_field_class_stored_value_index(ec->spec_context_fc, ctf_tc, sc, ec);
 143                 update_field_class_stored_value_index(ec->payload_fc, ctf_tc, sc, ec);
 144             }
 145         }
 146     }
 147
 148     return 0;
 149 }