| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef BASE_TASK_TASK_SCHEDULER_SCHEDULER_SEQUENCED_TASK_RUNNER_H_ |
| #define BASE_TASK_TASK_SCHEDULER_SCHEDULER_SEQUENCED_TASK_RUNNER_H_ |
| |
| #include "base/base_export.h" |
| #include "base/callback_forward.h" |
| #include "base/location.h" |
| #include "base/task/task_scheduler/scheduler_task_runner_delegate.h" |
| #include "base/task/task_scheduler/sequence.h" |
| #include "base/task/task_traits.h" |
| #include "base/time/time.h" |
| #include "base/updateable_sequenced_task_runner.h" |
| |
| namespace base { |
| namespace internal { |
| |
| // A task runner that runs tasks in sequence. |
| class BASE_EXPORT SchedulerSequencedTaskRunner |
| : public UpdateableSequencedTaskRunner { |
| public: |
| // Constructs a SchedulerSequencedTaskRunner which can be used to post tasks. |
| SchedulerSequencedTaskRunner( |
| const TaskTraits& traits, |
| SchedulerTaskRunnerDelegate* scheduler_task_runner_delegate); |
| |
| // UpdateableSequencedTaskRunner: |
| bool PostDelayedTask(const Location& from_here, |
| OnceClosure closure, |
| TimeDelta delay) override; |
| |
| bool PostNonNestableDelayedTask(const Location& from_here, |
| OnceClosure closure, |
| TimeDelta delay) override; |
| |
| bool RunsTasksInCurrentSequence() const override; |
| |
| void UpdatePriority(TaskPriority priority) override; |
| |
| private: |
| ~SchedulerSequencedTaskRunner() override; |
| |
| SchedulerTaskRunnerDelegate* const scheduler_task_runner_delegate_; |
| |
| // Sequence for all Tasks posted through this TaskRunner. |
| const scoped_refptr<Sequence> sequence_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SchedulerSequencedTaskRunner); |
| }; |
| |
| } // namespace internal |
| } // namespace base |
| |
| #endif // BASE_TASK_TASK_SCHEDULER_SCHEDULER_SEQUENCED_TASK_RUNNER_H_ |