1/*
2 * Copyright 2016-present Facebook, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#pragma once
18
19#ifndef _WIN32
20
21#include <sys/mman.h>
22
23// MAP_ANONYMOUS is named MAP_ANON on OSX/BSD.
24#if defined(__APPLE__) || defined(__FreeBSD__)
25#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
26#define MAP_ANONYMOUS MAP_ANON
27#endif
28#endif
29
30#else
31
32#include <cstdint>
33
34#include <sys/types.h>
35
36#define MAP_ANONYMOUS 1
37#define MAP_ANON MAP_ANONYMOUS
38#define MAP_SHARED 2
39#define MAP_PRIVATE 4
40#define MAP_POPULATE 8
41#define MAP_NORESERVE 16
42#define MAP_FIXED 32
43
44#define MAP_FAILED ((void*)-1)
45
46#define PROT_NONE 0
47#define PROT_READ 1
48#define PROT_WRITE 2
49#define PROT_EXEC 4
50
51#define MADV_NORMAL 0
52#define MADV_DONTNEED 0
53#define MADV_SEQUENTIAL 0
54
55extern "C" {
56int madvise(const void* addr, size_t len, int advise);
57int mlock(const void* addr, size_t len);
58void* mmap(void* addr, size_t length, int prot, int flags, int fd, off_t off);
59int mprotect(void* addr, size_t size, int prot);
60int munlock(const void* addr, size_t length);
61int munmap(void* addr, size_t length);
62}
63
64#endif
65