Method ComputeMetadataOffsets

core/metadata.cc:443–486

Main entry point for calculating metadata offsets. */

/* Main entry point for calculating metadata offsets. */
int Pipeline::ComputeMetadataOffsets() {
  int ret;

  ret = PrepareMetadataComputation();

  if (ret) {
    CleanupMetadataComputation();
    return ret;
  }

  for (const auto &it : ModuleGraph::GetAllModules()) {
    Module *m = it.second;
    if (!m) {
      break;
    }

    size_t i = 0;
    for (const auto &attr : m->all_attrs()) {
      if (attr.mode == Attribute::AccessMode::kRead ||
          attr.mode == Attribute::AccessMode::kUpdate) {
        m->set_attr_offset(i, kMetadataOffsetNoRead);
      } else if (attr.mode == Attribute::AccessMode::kWrite) {
        m->set_attr_offset(i, kMetadataOffsetNoWrite);
        if (attr.scope_id == -1) {
          IdentifySingleScopeComponent(m, &attr);
        }
      }
      i++;
    }
  }

  ComputeScopeDegrees();
  std::sort(scope_components_.begin(), scope_components_.end(), DegreeComp);
  AssignOffsets();

  if (VLOG_IS_ON(1)) {
    LogAllScopes();
  }

  CheckOrphanReaders();

  CleanupMetadataComputation();
  return 0;
}

int Pipeline::RegisterAttribute(const std::string &attr_name, size_t size) {
  const auto &it = registered_attrs_.find(attr_name);