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 | |
55 | extern "C" { |
56 | int madvise(const void* addr, size_t len, int advise); |
57 | int mlock(const void* addr, size_t len); |
58 | void* mmap(void* addr, size_t length, int prot, int flags, int fd, off_t off); |
59 | int mprotect(void* addr, size_t size, int prot); |
60 | int munlock(const void* addr, size_t length); |
61 | int munmap(void* addr, size_t length); |
62 | } |
63 | |
64 | #endif |
65 | |