/*
 * sys/mman.h
 * mman-win32
 */

#ifndef _SYS_MMAN_H_
#define _SYS_MMAN_H_

#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

#include <sys/types.h>

#define S_IRWXG (S_IRWXU >> 3)
#define S_IRWXO (S_IRWXG >> 3)

#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
/* Linux-only hint; safe to no-op on Win32 since VirtualAlloc reservations
 * already overcommit at the OS level. */
#define MAP_NORESERVE   0x4000

#define MAP_FAILED      ((void *)-1)

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

/* madvise hints. We only emulate WILLNEED (Win32 PrefetchVirtualMemory) and
 * make every other hint a no-op. */
#define MADV_NORMAL     0
#define MADV_RANDOM     1
#define MADV_SEQUENTIAL 2
#define MADV_WILLNEED   3
#define MADV_DONTNEED   4

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);
int     madvise(void *addr, size_t len, int advice);

#ifdef __cplusplus
};
#endif

#endif /*  _SYS_MMAN_H_ */