source/utils/CarlaMemUtils.hpp

   1 /*
   2  * Carla shared memory utils
   3  * Copyright (C) 2023 Filipe Coelho <falktx@falktx.com>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of
   8  * the License, or any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * For a full copy of the GNU General Public License see the doc/GPL.txt file.
  16  */
  17
  18 #ifndef CARLA_MEM_UTILS_HPP_INCLUDED
  19 #define CARLA_MEM_UTILS_HPP_INCLUDED
  20
  21 #include "CarlaUtils.hpp"
  22
  23 #if !defined(CARLA_OS_WASM) && !defined(CARLA_OS_WIN)
  24 # include <sys/mman.h>
  25 #endif
  26
  27 // --------------------------------------------------------------------------------------------------------------------
  28
  29 static inline
  30 bool carla_mlock(void* const ptr, const size_t size)
  31 {
  32    #if defined(CARLA_OS_WASM)
  33     // unsupported
  34     return false;
  35     (void)ptr; (void)size;
  36    #elif defined(CARLA_OS_WIN)
  37     return ::VirtualLock(ptr, size) != FALSE;
  38    #else
  39     return ::mlock(ptr, size) == 0;
  40    #endif
  41 }
  42
  43 // --------------------------------------------------------------------------------------------------------------------
  44
  45 #endif // CARLA_MEM_UTILS_HPP_INCLUDED