text: /*
   *   BSD LICENSE
   *   Copyright (c) 2021 Samsung Electronics Corporation
   *   All rights reserved.
   *
   *   Redistribution and use in source and binary forms, with or without
   *   modification, are permitted provided that the following conditions
   *   are met:
   *
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above copyright
   *       notice, this list of conditions and the following disclaimer in
   *       the documentation and/or other materials provided with the
   *       distribution.
   *     * Neither the name of Intel Corporation nor the names of its
   *       contributors may be used to endorse or promote products derived
   *       from this software without specific prior written permission.
   *
   *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #pragma once
  
  #include <cstdint>
  
  #include "src/io/general_io/volume_io.h"
  #include "src/scheduler/callback.h"
  
  namespace ibofos
  {
  struct IOCtx
  {
      IOCtx(void);
  
      int cnt;
      int needPollingCount;
  };
  
  class VolumeManager;
  
  class AioCompletion : public Callback,
                        public std::enable_shared_from_this<AioCompletion>
  {
  public:
      AioCompletion(VolumeIoSmartPtr volumeIo, ibof_io& ibofIo, IOCtx& ioContext);
      ~AioCompletion(void) override;
  
  private:
      void _SendUserCompletion(void);
      bool _DoSpecificJob(void) override;
  
      VolumeIoSmartPtr volumeIo;
      ibof_io& ibofIo;
      IOCtx& ioContext;
      static VolumeManager& volumeManager;
  };
  
  class AIO
  {
  public:
      AIO(void);
      void SubmitAsyncIO(ibof_io& ibofIo);
      void CompleteIOs(void);
  
  private:
      static thread_local IOCtx ioContext;
      VolumeIoSmartPtr _CreateVolumeIo(ibof_io& ibofIo);
  };
  } // namespace ibofos
  