Avoid all unnecessary calls to TLS during thread teardown

base/tracked_objects.cc

 // Copyright (c) 2011 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.
 
 #include "base/tracked_objects.h"
 
 #include <math.h>
 
 #include "base/format_macros.h"
 #include "base/message_loop.h"
@@ skipping 185 matching lines @@
     worker_thread_data = new ThreadData();
 
   tls_index_.Set(worker_thread_data);
   return worker_thread_data;
 }
 
 // static
 void ThreadData::OnThreadTermination(void* thread_data) {
   if (!kTrackAllTaskObjects)
     return;  // Not compiled in.
-  DCHECK(tls_index_.initialized());
   if (!thread_data)
     return;
   reinterpret_cast<ThreadData*>(thread_data)->OnThreadTerminationCleanup();
 }
 
 void ThreadData::OnThreadTerminationCleanup() const {
   if (!is_a_worker_thread_)
     return;
   base::AutoLock lock(*list_lock_);
   unregistered_thread_data_pool_->push(this);
@@ skipping 919 matching lines @@
                         (combined_selectors_ & BIRTH_THREAD) ? "*" :
                           sample.birth().birth_thread()->thread_name().c_str(),
                         (combined_selectors_ & DEATH_THREAD) ? "*" :
                           sample.DeathThreadName().c_str());
   sample.birth().location().Write(!(combined_selectors_ & BIRTH_FILE),
                                   !(combined_selectors_ & BIRTH_FUNCTION),
                                   output);
 }
 
 }  // namespace tracked_objects