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      1 // Copyright (c) 2011 The Chromium 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 "content/public/utility/utility_thread.h"
      6 
      7 #include "base/lazy_instance.h"
      8 #include "base/threading/thread_local.h"
      9 
     10 namespace content {
     11 
     12 // Keep the global UtilityThread in a TLS slot so it is impossible to access
     13 // incorrectly from the wrong thread.
     14 static base::LazyInstance<base::ThreadLocalPointer<UtilityThread> >::Leaky
     15     lazy_tls = LAZY_INSTANCE_INITIALIZER;
     16 
     17 UtilityThread* UtilityThread::Get() {
     18   return lazy_tls.Pointer()->Get();
     19 }
     20 
     21 UtilityThread::UtilityThread() {
     22   lazy_tls.Pointer()->Set(this);
     23 }
     24 
     25 UtilityThread::~UtilityThread() {
     26   lazy_tls.Pointer()->Set(NULL);
     27 }
     28 
     29 }  // namespace content
     30 
     31