content/public/utility/utility_thread.cc

   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