Line data    Source code

       1             : // Copyright 2018 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include "src/thread-id.h"
       6             : #include "src/base/lazy-instance.h"
       7             : #include "src/base/platform/platform.h"
       8             : 
       9             : namespace v8 {
      10             : namespace internal {
      11             : 
      12             : base::Atomic32 ThreadId::highest_thread_id_ = 0;
      13             : 
      14             : namespace {
      15             : 
      16      791137 : DEFINE_LAZY_LEAKY_OBJECT_GETTER(base::Thread::LocalStorageKey, GetThreadIdKey,
      17             :                                 base::Thread::CreateThreadLocalKey());
      18             : 
      19             : }  // namespace
      20             : 
      21             : // static
      22        1499 : ThreadId ThreadId::TryGetCurrent() {
      23        1499 :   int thread_id = base::Thread::GetThreadLocalInt(*GetThreadIdKey());
      24        3491 :   return thread_id == 0 ? Invalid() : ThreadId(thread_id);
      25             : }
      26             : 
      27             : // static
      28      662594 : int ThreadId::GetCurrentThreadId() {
      29      662594 :   int thread_id = base::Thread::GetThreadLocalInt(*GetThreadIdKey());
      30      662589 :   if (thread_id == 0) {
      31             :     thread_id = AllocateThreadId();
      32       67561 :     base::Thread::SetThreadLocalInt(*GetThreadIdKey(), thread_id);
      33             :   }
      34      662591 :   return thread_id;
      35             : }
      36             : 
      37             : }  // namespace internal
      38             : }  // namespace v8