chromium/chrome/browser/sync_file_system/drive_backend/sync_task_manager.h

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_
#define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_

#include <stddef.h>
#include <stdint.h>

#include <memory>
#include <queue>
#include <unordered_map>
#include <vector>

#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "chrome/browser/sync_file_system/drive_backend/task_dependency_manager.h"
#include "chrome/browser/sync_file_system/sync_callbacks.h"
#include "chrome/browser/sync_file_system/sync_status_code.h"
#include "chrome/browser/sync_file_system/task_logger.h"

namespace base {
class Location;
class SequencedTaskRunner;
}

namespace sync_file_system {
namespace drive_backend {

class SyncTask;
class SyncTaskToken;
struct TaskBlocker;

// This class manages asynchronous tasks for Sync FileSystem.  Each task must be
// either a Task or a SyncTask.
// The instance runs single task as the foreground task, and multiple tasks as
// background tasks.  Running background task has a TaskBlocker that
// describes which task can run in parallel.  When a task start running as a
// background task, SyncTaskManager checks if any running background task
// doesn't block the new background task, and queues it up if it can't run.
class SyncTaskManager { … };

}  // namespace drive_backend
}  // namespace sync_file_system

#endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_