xbmc/platform/posix/utils/Mmap.h

   1 /*
   2  *  Copyright (C) 2017-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #pragma once
  10
  11 #include <cstddef>
  12
  13 #include <sys/mman.h>
  14
  15 namespace KODI
  16 {
  17 namespace UTILS
  18 {
  19 namespace POSIX
  20 {
  21
  22 /**
  23  * Wrapper for mapped memory that automatically calls munmap on destruction
  24  */
  25 class CMmap
  26 {
  27 public:
  28   /**
  29    * See mmap(3p) for parameter description
  30    */
  31   CMmap(void* addr, std::size_t length, int prot, int flags, int fildes, off_t offset);
  32   ~CMmap();
  33
  34   void* Data() const
  35   {
  36     return m_memory;
  37   }
  38   std::size_t Size() const
  39   {
  40     return m_size;
  41   }
  42
  43 private:
  44   CMmap(CMmap const& other) = delete;
  45   CMmap& operator=(CMmap const& other) = delete;
  46
  47   std::size_t m_size;
  48   void* m_memory;
  49 };
  50
  51 }
  52 }
  53 }