// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.

#pragma once

#ifndef _WINDOWS
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#else
#include <Windows.h>
#endif
#include <string>

namespace diskann
{
class MemoryMapper
{
  private:
#ifndef _WINDOWS
    int _fd;
#else
    HANDLE _bareFile;
    HANDLE _fd;

#endif
    char *_buf;
    size_t _fileSize;
    const char *_fileName;

  public:
    MemoryMapper(const char *filename);
    MemoryMapper(const std::string &filename);

    char *getBuf();
    size_t getFileSize();

    ~MemoryMapper();
};
} // namespace diskann