1 | /* $NetBSD: fileext.h,v 1.6 2010/01/11 20:39:29 joerg Exp $ */␊ |
2 | ␊ |
3 | /*-␊ |
4 | * Copyright (c)2001 Citrus Project,␊ |
5 | * All rights reserved.␊ |
6 | *␊ |
7 | * Redistribution and use in source and binary forms, with or without␊ |
8 | * modification, are permitted provided that the following conditions␊ |
9 | * are met:␊ |
10 | * 1. Redistributions of source code must retain the above copyright␊ |
11 | * notice, this list of conditions and the following disclaimer.␊ |
12 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
13 | * notice, this list of conditions and the following disclaimer in the␊ |
14 | * documentation and/or other materials provided with the distribution.␊ |
15 | *␊ |
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND␊ |
17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE␊ |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE␊ |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE␊ |
20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL␊ |
21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS␊ |
22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)␊ |
23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT␊ |
24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY␊ |
25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF␊ |
26 | * SUCH DAMAGE.␊ |
27 | *␊ |
28 | * $Citrus$␊ |
29 | */␊ |
30 | ␊ |
31 | /*␊ |
32 | * file extension␊ |
33 | */␊ |
34 | struct __sfileext {␊ |
35 | ␉struct␉__sbuf _ub; /* ungetc buffer */␊ |
36 | ␉//struct wchar_io_data _wcio;␉/* wide char i/o status */␊ |
37 | ␉size_t _fgetstr_len;␊ |
38 | ␉char *_fgetstr_buf;␊ |
39 | #ifdef _REENTRANT␊ |
40 | ␉mutex_t␉_lock;␉/* Lock for FLOCKFILE/FUNLOCKFILE */␊ |
41 | ␉cond_t _lockcond; /* Condition variable for signalling lock releases */␊ |
42 | ␉thr_t _lockowner; /* The thread currently holding the lock */␊ |
43 | ␉int _lockcount; /* Count of recursive locks */␊ |
44 | ␉int _lockinternal; /* Flag of whether the lock is held inside stdio */␊ |
45 | ␉int _lockcancelstate; /* Stashed cancellation state on internal lock */␊ |
46 | #endif␉␊ |
47 | };␊ |
48 | ␊ |
49 | #define _EXT(fp) ((struct __sfileext *)(void *)((fp)->_ext._base))␊ |
50 | #define _UB(fp) _EXT(fp)->_ub␊ |
51 | #ifdef _REENTRANT␊ |
52 | #define _LOCK(fp) (_EXT(fp)->_lock)␊ |
53 | #define _LOCKCOND(fp) (_EXT(fp)->_lockcond)␊ |
54 | #define _LOCKOWNER(fp) (_EXT(fp)->_lockowner)␊ |
55 | #define _LOCKCOUNT(fp) (_EXT(fp)->_lockcount)␊ |
56 | #define _LOCKINTERNAL(fp) (_EXT(fp)->_lockinternal)␊ |
57 | #define _LOCKCANCELSTATE(fp) (_EXT(fp)->_lockcancelstate)␊ |
58 | #define _FILEEXT_SETUP(f, fext) do { \␊ |
59 | /* LINTED */(f)->_ext._base = (unsigned char *)(fext); \␊ |
60 | (fext)->_fgetstr_len = 0; \␊ |
61 | (fext)->_fgetstr_buf = NULL; \␊ |
62 | mutex_init(&_LOCK(f), NULL); \␊ |
63 | cond_init(&_LOCKCOND(f), 0, NULL); \␊ |
64 | _LOCKOWNER(f) = NULL; \␊ |
65 | _LOCKCOUNT(f) = 0; \␊ |
66 | _LOCKINTERNAL(f) = 0; \␊ |
67 | } while (/* CONSTCOND */ 0)␊ |
68 | #else␊ |
69 | #define _FILEEXT_SETUP(f, fext) do { \␊ |
70 | /* LINTED */(f)->_extra->_base = (unsigned char *)(fext); \␊ |
71 | (fext)->_fgetstr_len = 0; \␊ |
72 | (fext)->_fgetstr_buf = NULL; \␊ |
73 | } while (/* CONSTCOND */ 0)␊ |
74 | #endif␊ |
75 | |