| // Copyright 2020 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/trace_event/trace_id_helper.h" |
| |
| #include "base/atomic_sequence_num.h" |
| #include "base/rand_util.h" |
| |
| namespace base::trace_event { |
| |
| uint64_t GetNextGlobalTraceId() { |
| static const uint64_t kPerProcessRandomValue = base::RandUint64(); |
| static base::AtomicSequenceNumber counter; |
| return kPerProcessRandomValue ^ static_cast<uint64_t>(counter.GetNext()); |
| } |
| |
| } // namespace base::trace_event |
