// 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_SCHEDULER_TASK_TRACKER_POSIX_H_
#define BASE_TASK_SCHEDULER_TASK_TRACKER_POSIX_H_

#include <memory>

#include "base/base_export.h"
#include "base/macros.h"
#include "base/task_scheduler/task_tracker.h"

namespace base {

class MessageLoopForIO;

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.
class BASE_EXPORT TaskTrackerPosix : public TaskTracker {
 public:
  // |watch_file_descriptor_message_loop| is used to setup FileDescriptorWatcher
  // in the scope in which a Task runs.
  TaskTrackerPosix(MessageLoopForIO* watch_file_descriptor_message_loop);
  ~TaskTrackerPosix();

 private:
  // TaskTracker:
  void PerformRunTask(std::unique_ptr<Task> task) override;

  MessageLoopForIO* const watch_file_descriptor_message_loop_;

  DISALLOW_COPY_AND_ASSIGN(TaskTrackerPosix);
};

}  // namespace internal
}  // namespace base

#endif  // BASE_TASK_SCHEDULER_TASK_TRACKER_POSIX_H_