/* Copyright  (C) 2010-2020 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (memmap.h).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef _MEMMAP_H
#define _MEMMAP_H

#ifdef _WIN32

#ifndef _WIN32_WINNT            /* Allow use of features specific to Windows XP or later. */
#define _WIN32_WINNT 0x0501     /* Change this to the appropriate value to target other versions of Windows. */
#endif                                          

/* All the headers include this file. */
#ifndef _MSC_VER
#include <_mingw.h>
#endif

#endif //_WIN32

#if defined(_WIN32) || !P_HAVE_MMAP
#include <sys/types.h>

#ifdef __cplusplus
extern "C" {
#endif

#define PROT_NONE       0
#define PROT_READ       1
#define PROT_WRITE      2
#define PROT_EXEC       4

#define MAP_FILE        0
#define MAP_SHARED      1
#define MAP_PRIVATE     2
#define MAP_TYPE        0xf
#define MAP_FIXED       0x10
#define MAP_ANONYMOUS   0x20
#define MAP_ANON        MAP_ANONYMOUS

#define MAP_FAILED      ((void *)-1)

/* Flags for msync. */
#define MS_ASYNC        1
#define MS_SYNC         2
#define MS_INVALIDATE   4

#ifdef _WIN32
void*   mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off);
int     munmap(void *addr, size_t len);
int     mprotect(void *addr, size_t len, int prot);
int     msync(void *addr, size_t len, int flags);
int     mlock(const void *addr, size_t len);
int     munlock(const void *addr, size_t len);
#endif

#ifdef __cplusplus
};
#endif

#else
#include <sys/mman.h>
#endif

#endif
