////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///     http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
/// @author Achim Brandt
////////////////////////////////////////////////////////////////////////////////

#ifndef ARANGOD_SCHEDULER_TASK_MANAGER_H
#define ARANGOD_SCHEDULER_TASK_MANAGER_H 1

#include "Basics/Common.h"

#include "Scheduler/events.h"

namespace arangodb {
namespace rest {
class Task;
class Scheduler;

////////////////////////////////////////////////////////////////////////////////
/// @ingroup Scheduler
/// @brief abstract base class for tasks
////////////////////////////////////////////////////////////////////////////////

class TaskManager {
 private:
  TaskManager(TaskManager const&);
  TaskManager& operator=(TaskManager const&);

 public:
  TaskManager() {}

  virtual ~TaskManager() {}

 public:
  //////////////////////////////////////////////////////////////////////////////
  /// @brief deletes a task
  //////////////////////////////////////////////////////////////////////////////

  void deleteTask(Task* task);

  //////////////////////////////////////////////////////////////////////////////
  /// @brief called to setup the callback information
  ///
  /// Called to setup all the necessary information within the event loop. In
  /// case
  /// of a multi-threaded scheduler the event loop identifier is supplied.
  //////////////////////////////////////////////////////////////////////////////

  bool setupTask(Task*, Scheduler*, EventLoop loop);

  //////////////////////////////////////////////////////////////////////////////
  /// @brief called to clear the callback information
  //////////////////////////////////////////////////////////////////////////////

  void cleanupTask(Task*);
};
}
}

#endif