1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __LIB_UTILS_COMPAT_H
#define __LIB_UTILS_COMPAT_H
#include <unistd.h>
#if defined(__APPLE__)
/* Mac OS has always had a 64-bit off_t, so it doesn't have off64_t. */
typedef off_t off64_t;
static inline off64_t lseek64(int fd, off64_t offset, int whence) {
return lseek(fd, offset, whence);
}
static inline ssize_t pread64(int fd, void* buf, size_t nbytes, off64_t offset) {
return pread(fd, buf, nbytes, offset);
}
static inline ssize_t pwrite64(int fd, const void* buf, size_t nbytes, off64_t offset) {
return pwrite(fd, buf, nbytes, offset);
}
#endif /* __APPLE__ */
#if defined(_WIN32)
#define O_CLOEXEC O_NOINHERIT
#define O_NOFOLLOW 0
#define DEFFILEMODE 0666
#endif /* _WIN32 */
#define ZD "%zd"
#define ZD_TYPE ssize_t
/*
* Needed for cases where something should be constexpr if possible, but not
* being constexpr is fine if in pre-C++11 code (such as a const static float
* member variable).
*/
#if __cplusplus >= 201103L
#define CONSTEXPR constexpr
#else
#define CONSTEXPR
#endif
/*
* TEMP_FAILURE_RETRY is defined by some, but not all, versions of
* <unistd.h>. (Alas, it is not as standard as we'd hoped!) So, if it's
* not already defined, then define it here.
*/
#ifndef TEMP_FAILURE_RETRY
/* Used to retry syscalls that can return EINTR. */
#define TEMP_FAILURE_RETRY(exp) ({ \
typeof (exp) _rc; \
do { \
_rc = (exp); \
} while (_rc == -1 && errno == EINTR); \
_rc; })
#endif
#if defined(_WIN32)
#define OS_PATH_SEPARATOR '\\'
#else
#define OS_PATH_SEPARATOR '/'
#endif
#endif /* __LIB_UTILS_COMPAT_H */
|
