// Copyright 2018 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "src/execution/thread-id.h" #include "src/base/lazy-instance.h" #include "src/base/platform/platform.h" namespace v8 { namespace internal { namespace { thread_local int thread_id = 0; std::atomic<int> next_thread_id{1}; } // namespace // static ThreadId ThreadId::TryGetCurrent() { return thread_id == 0 ? Invalid() : ThreadId(thread_id); } // static int ThreadId::GetCurrentThreadId() { if (thread_id == 0) { thread_id = next_thread_id.fetch_add(1); CHECK_LE(1, thread_id); } return thread_id; } } // namespace internal } // namespace v8