components/scheduler/child/web_scheduler_impl.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 CONTENT_CHILD_SCHEDULER_BASE_WEB_SCHEDULER_IMPL_H_
   6 #define CONTENT_CHILD_SCHEDULER_BASE_WEB_SCHEDULER_IMPL_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/time/time.h"
  11 #include "components/scheduler/scheduler_export.h"
  12 #include "third_party/WebKit/public/platform/WebScheduler.h"
  13 #include "third_party/WebKit/public/platform/WebThread.h"
  14
  15 namespace base {
  16 class SingleThreadTaskRunner;
  17 }
  18
  19 namespace scheduler {
  20
  21 class ChildScheduler;
  22 class SingleThreadIdleTaskRunner;
  23
  24 class SCHEDULER_EXPORT WebSchedulerImpl : public blink::WebScheduler {
  25  public:
  26   WebSchedulerImpl(
  27       ChildScheduler* child_scheduler,
  28       scoped_refptr<SingleThreadIdleTaskRunner> idle_task_runner,
  29       scoped_refptr<base::SingleThreadTaskRunner> loading_task_runner,
  30       scoped_refptr<base::SingleThreadTaskRunner> timer_task_runner);
  31   ~WebSchedulerImpl() override;
  32
  33   // blink::WebScheduler implementation:
  34   virtual void shutdown();
  35   virtual bool shouldYieldForHighPriorityWork();
  36   virtual bool canExceedIdleDeadlineIfRequired();
  37   virtual void postIdleTask(const blink::WebTraceLocation& location,
  38                             blink::WebThread::IdleTask* task);
  39   virtual void postNonNestableIdleTask(const blink::WebTraceLocation& location,
  40                                        blink::WebThread::IdleTask* task);
  41   virtual void postIdleTaskAfterWakeup(const blink::WebTraceLocation& location,
  42                                        blink::WebThread::IdleTask* task);
  43   virtual void postLoadingTask(const blink::WebTraceLocation& location,
  44                                blink::WebThread::Task* task);
  45   virtual void postTimerTask(const blink::WebTraceLocation& location,
  46                              blink::WebThread::Task* task,
  47                              long long delayMs);
  48
  49  private:
  50   static void runIdleTask(scoped_ptr<blink::WebThread::IdleTask> task,
  51                           base::TimeTicks deadline);
  52   static void runTask(scoped_ptr<blink::WebThread::Task> task);
  53
  54   ChildScheduler* child_scheduler_;  // NOT OWNED
  55   scoped_refptr<SingleThreadIdleTaskRunner> idle_task_runner_;
  56   scoped_refptr<base::SingleThreadTaskRunner> loading_task_runner_;
  57   scoped_refptr<base::SingleThreadTaskRunner> timer_task_runner_;
  58 };
  59
  60 }  // namespace scheduler
  61
  62 #endif  // CONTENT_CHILD_SCHEDULER_BASE_WEB_SCHEDULER_IMPL_H_