Method AddMetadataEventsWhileLocked

be/src/kudu/util/debug/trace_event_impl.cc:2070–2127

}

void TraceLog::AddMetadataEventsWhileLocked() {
  DCHECK(lock_.IsHeld());

#if !defined(OS_NACL)  // NaCl shouldn't expose the process id.
  InitializeMetadataEvent(AddEventToThreadSharedChunkWhileLocked(nullptr, false),
                          0,
                          "num_cpus", "number",
                          base::NumCPUs());
#endif


  int current_thread_id = static_cast<int>(kudu::Thread::UniqueThreadId());
  if (process_sort_index_ != 0) {
    InitializeMetadataEvent(AddEventToThreadSharedChunkWhileLocked(nullptr, false),
                            current_thread_id,
                            "process_sort_index", "sort_index",
                            process_sort_index_);
  }

  if (process_name_.size()) {
    InitializeMetadataEvent(AddEventToThreadSharedChunkWhileLocked(nullptr, false),
                            current_thread_id,
                            "process_name", "name",
                            process_name_);
  }

  if (process_labels_.size() > 0) {
    std::vector<std::string> labels;
    for(auto& label : process_labels_) {
      labels.push_back(label.second);
    }
    InitializeMetadataEvent(AddEventToThreadSharedChunkWhileLocked(nullptr, false),
                            current_thread_id,
                            "process_labels", "labels",
                            JoinStrings(labels, ","));
  }

  // Thread sort indices.
  for(auto& sort_index : thread_sort_indices_) {
    if (sort_index.second == 0)
      continue;
    InitializeMetadataEvent(AddEventToThreadSharedChunkWhileLocked(nullptr, false),
                            sort_index.first,
                            "thread_sort_index", "sort_index",
                            sort_index.second);
  }

  // Thread names.
  SpinLockHolder thread_info_lock(&thread_info_lock_);
  for(auto& name : thread_names_) {
    if (name.second.empty())
      continue;
    InitializeMetadataEvent(AddEventToThreadSharedChunkWhileLocked(nullptr, false),
                            name.first,
                            "thread_name", "name",
                            name.second);
  }
}