/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     snd_Task.h

  Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Revision: 17878 $
 *---------------------------------------------------------------------------*/

#ifndef NW_SND_TASK_H_
#define NW_SND_TASK_H_

#include <nw/ut/ut_LinkList.h>      // ut::LinkListNode
#include <nw/ut/ut_PreProcessor.h>

namespace nw {
namespace snd {
namespace internal {

/* ========================================================================
        Task class
   ======================================================================== */
class TaskManager;

class Task
{
    friend class TaskManager;
    
  public:
    enum Status {
        STATUS_FREE,
        STATUS_APPEND,
        STATUS_EXECUTE,
        STATUS_DONE,
        STATUS_CANCEL
    };
    
    Task();
    virtual ~Task();
    
    void SetId( u32 id ) { m_Id = id; }
    Status GetStatus() const { return m_Status; }
    
    void Wait() { m_Event.Wait(); }
    
  protected:
    // タスク処理を実装する
    // NOTE: Execute関数内で、Taskインスタンスを解放しないこと
    virtual void Execute() = 0;

  private:
    NW_DISALLOW_COPY_AND_ASSIGN( Task );
    
    ut::LinkListNode m_TaskLink;
    nn::os::LightEvent m_Event;
    Status m_Status;
    u32 m_Id;
};

} // namespace nw::snd::internal
} // namespace nw::snd
} // namespace nw


#endif /* NW_SND_TASK_H_ */