// Copyright 2020 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef BASE_TRACE_EVENT_TRACE_ID_HELPER_H_ #define BASE_TRACE_EVENT_TRACE_ID_HELPER_H_ #include #include "base/base_export.h" namespace base { namespace trace_event { // Returns an globally-unique id which can be used as a flow id or async event // id. This is fast (powered by an memory-order-relaxed atomic int), so use this // function instead of implementing your own counter and hashing it with a // random value. However, consider using TRACE_ID_LOCAL(this) to avoid storing // additional data if possible. BASE_EXPORT uint64_t GetNextGlobalTraceId(); } // namespace trace_event } // namespace base #endif // BASE_TRACE_EVENT_TRACE_ID_HELPER_H_