| // Copyright 2016 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_THREAD_POOL_TASK_TRACKER_POSIX_H_ |
| #define BASE_TASK_THREAD_POOL_TASK_TRACKER_POSIX_H_ |
| |
| #include <memory> |
| |
| #include "base/base_export.h" |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/task/thread_pool/task_tracker.h" |
| #include "base/threading/platform_thread.h" |
| |
| namespace base { |
| namespace internal { |
| |
| struct Task; |
| |
| // A TaskTracker that instantiates a FileDescriptorWatcher in the scope in which |
| // a task runs. Used on all POSIX platforms except NaCl SFI. |
| // set_io_thread_task_runner() must be called before the |
| // TaskTracker can run tasks. |
| class BASE_EXPORT TaskTrackerPosix : public TaskTracker { |
| public: |
| TaskTrackerPosix(StringPiece name); |
| ~TaskTrackerPosix() override; |
| |
| // Sets the task runner with which to setup FileDescriptorWatcher in |
| // the scope in which tasks run. |io_thread_task_runner| must refer to |
| // a Thread with MessageLoop::TYPE_IO. |
| // Must be called before starting to run tasks. |
| // External synchronization is required between a call to this and a call to |
| // RunTask(). |
| void set_io_thread_task_runner( |
| scoped_refptr<SingleThreadTaskRunner> io_thread_task_runner) { |
| io_thread_task_runner_ = std::move(io_thread_task_runner); |
| } |
| |
| protected: |
| // TaskTracker: |
| void RunOrSkipTask(Task task, |
| TaskSource* task_source, |
| const TaskTraits& traits, |
| bool can_run_task) override; |
| |
| private: |
| scoped_refptr<SingleThreadTaskRunner> io_thread_task_runner_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TaskTrackerPosix); |
| }; |
| |
| } // namespace internal |
| } // namespace base |
| |
| #endif // BASE_TASK_THREAD_POOL_TASK_TRACKER_POSIX_H_ |