components/scheduler/child/null_worker_scheduler.h

   1 // Copyright 2015 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 COMPONENTS_SCHEDULER_CHILD_NULL_WORKER_SCHEDULER_H_
   6 #define COMPONENTS_SCHEDULER_CHILD_NULL_WORKER_SCHEDULER_H_
   7
   8 #include "components/scheduler/child/worker_scheduler.h"
   9
  10 namespace scheduler {
  11
  12 class NullWorkerScheduler : public WorkerScheduler {
  13  public:
  14   NullWorkerScheduler();
  15   ~NullWorkerScheduler() override;
  16
  17   scoped_refptr<base::SingleThreadTaskRunner> DefaultTaskRunner() override;
  18   scoped_refptr<SingleThreadIdleTaskRunner> IdleTaskRunner() override;
  19
  20   void AddTaskObserver(base::MessageLoop::TaskObserver* task_observer) override;
  21   void RemoveTaskObserver(
  22       base::MessageLoop::TaskObserver* task_observer) override;
  23   bool CanExceedIdleDeadlineIfRequired() const override;
  24   bool ShouldYieldForHighPriorityWork() override;
  25   void Init() override;
  26   void Shutdown() override;
  27
  28  private:
  29   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
  30   scoped_refptr<SingleThreadIdleTaskRunner> idle_task_runner_;
  31
  32   DISALLOW_COPY_AND_ASSIGN(NullWorkerScheduler);
  33 };
  34
  35 }  // namespace scheduler
  36
  37 #endif  // COMPONENTS_SCHEDULER_CHILD_NULL_WORKER_SCHEDULER_H_