Program Listing for File StoreFile.h

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//////////////////////////////////////////////////////////////////////////////
// Copyright 2017-2020 Lawrence Livermore National Security, LLC and other
// UMAP Project Developers. See the top-level LICENSE file for details.
//
// SPDX-License-Identifier: LGPL-2.1-only
//////////////////////////////////////////////////////////////////////////////
#ifndef _UMAP_STORE_FILE_H_
#define _UMAP_STORE_FILE_H_
#include <cstdint>
#include "umap/store/Store.hpp"
#include "umap/umap.h"

namespace Umap {
  class StoreFile : public Store {
    public:
      StoreFile(void* _region_, size_t _rsize_, size_t _alignsize_, int _fd_);

      ssize_t read_from_store(char* buf, size_t nb, off_t off);
      ssize_t  write_to_store(char* buf, size_t nb, off_t off);
    private:
      void* region;
      void* alignment_buffer;
      size_t rsize;
      size_t alignsize;
      int fd;
  };
}
#endif