mojo/shell/task_runners.h

   1 // Copyright 2013 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 #ifndef MOJO_SHELL_TASK_RUNNERS_H_
   6 #define MOJO_SHELL_TASK_RUNNERS_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/message_loop/message_loop_proxy.h"
  12 #include "base/threading/thread.h"
  13
  14 namespace base {
  15 class SequencedWorkerPool;
  16 }
  17
  18 namespace mojo {
  19 namespace shell {
  20
  21 // A context object that contains the common task runners for the shell's main
  22 // process.
  23 class TaskRunners {
  24  public:
  25   explicit TaskRunners(base::SingleThreadTaskRunner* ui_runner);
  26   ~TaskRunners();
  27
  28   base::SingleThreadTaskRunner* ui_runner() const {
  29     return ui_runner_.get();
  30   }
  31
  32   base::SingleThreadTaskRunner* io_runner() const {
  33     return io_thread_->message_loop_proxy();
  34   }
  35
  36   base::SingleThreadTaskRunner* file_runner() const {
  37     return file_thread_->message_loop_proxy();
  38   }
  39
  40   base::MessageLoopProxy* cache_runner() const {
  41     return cache_thread_->message_loop_proxy();
  42   }
  43
  44   base::SequencedWorkerPool* blocking_pool() const {
  45     return blocking_pool_.get();
  46   }
  47
  48  private:
  49   // TODO(beng): should this be named shell_runner_?
  50   scoped_refptr<base::SingleThreadTaskRunner> ui_runner_;
  51   scoped_ptr<base::Thread> cache_thread_;
  52   scoped_ptr<base::Thread> io_thread_;
  53   scoped_ptr<base::Thread> file_thread_;
  54
  55   scoped_refptr<base::SequencedWorkerPool> blocking_pool_;
  56
  57   DISALLOW_COPY_AND_ASSIGN(TaskRunners);
  58 };
  59
  60 }  // namespace shell
  61 }  // namespace mojo
  62
  63 #endif  // MOJO_SHELL_TASK_RUNNERS_H_