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
|
/* $OpenBSD: fileext.h,v 1.2 2005/06/17 20:40:32 espie Exp $ */
/* $NetBSD: fileext.h,v 1.5 2003/07/18 21:46:41 nathanw Exp $ */
/*-
* Copyright (c)2001 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Citrus$
*/
#ifndef _FILEEXT_H_
#define _FILEEXT_H_
#include <pthread.h>
#include <stdbool.h>
__BEGIN_DECLS
/*
* file extension
*/
struct __sfileext {
struct __sbuf _ub; /* ungetc buffer */
struct wchar_io_data _wcio; /* wide char io status */
pthread_mutex_t _lock; /* file lock */
bool _stdio_handles_locking; /* __fsetlocking support */
};
#if defined(__cplusplus)
#define _EXT(fp) reinterpret_cast<__sfileext*>((fp)->_ext._base)
#else
#define _EXT(fp) ((struct __sfileext *)((fp)->_ext._base))
#endif
#define _UB(fp) _EXT(fp)->_ub
#define _FLOCK(fp) _EXT(fp)->_lock
#define _FILEEXT_INIT(fp) \
do { \
_UB(fp)._base = NULL; \
_UB(fp)._size = 0; \
WCIO_INIT(fp); \
pthread_mutexattr_t attr; \
pthread_mutexattr_init(&attr); \
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); \
pthread_mutex_init(&_FLOCK(fp), &attr); \
pthread_mutexattr_destroy(&attr); \
_EXT(fp)->_stdio_handles_locking = true; \
} while (0)
#define _FILEEXT_SETUP(f, fext) \
do { \
(f)->_ext._base = (unsigned char *)(fext); \
_FILEEXT_INIT(f); \
} while (0)
__END_DECLS
#endif /* _FILEEXT_H_ */
|
