xref: /aosp_15_r20/external/federated-compute/fcp/tracing/tracing_span_id.cc (revision 14675a029014e728ec732f129a32e299b2da0601)

// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "fcp/tracing/tracing_span_id.h"

namespace fcp {

std::atomic<std::int64_t> TracingSpanId::id_source = 1;

TracingSpanId TracingSpanId::NextUniqueId() {
  std::int64_t new_id = id_source.fetch_add(1, std::memory_order_seq_cst);
  return TracingSpanId(new_id);
}

}  // namespace fcp