2 Copyright (C) 1994 Free Software Foundation
4 This file is part of the GNU IO Library. This library is free
5 software; you can redistribute it and/or modify it under the
6 terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option)
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this library; see the file COPYING. If not, write to the Free
17 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 As a special exception, if you link this library with files
20 compiled with a GNU compiler to produce an executable, this does not cause
21 the resulting executable to be covered by the GNU General Public License.
22 This exception does not however invalidate any other reasons why
23 the executable file might be covered by the GNU General Public License. */
26 /* This file provides definitions of _IO_stdin, _IO_stdout, and _IO_stderr
27 for C++ code. Compare stdfiles.c.
28 (The difference is that here the vtable field is set to
29 point to builtinbuf's vtable, so the objects are effectively
30 of class builtinbuf.) */
35 #if !defined(filebuf_vtable) && defined(__cplusplus)
37 extern char filebuf_vtable
[]
38 asm (_G_VTABLE_LABEL_PREFIX
39 #if _G_VTABLE_LABEL_HAS_LENGTH
44 #if _G_VTABLE_LABEL_HAS_LENGTH
45 #define filebuf_vtable _G_VTABLE_LABEL_PREFIX_ID##7filebuf
47 #define filebuf_vtable _G_VTABLE_LABEL_PREFIX_ID##filebuf
49 extern char filebuf_vtable
[];
50 #endif /* !__GNUC__ */
51 #endif /* !defined(filebuf_vtable) && defined(__cplusplus) */
54 #define STD_VTABLE (const struct _IO_jump_t *)filebuf_vtable
57 #define DEF_STDFILE(NAME, FD, CHAIN, FLAGS) \
58 struct _IO_FILE_plus NAME = {FILEBUF_LITERAL(CHAIN, FLAGS, FD), STD_VTABLE}
60 DEF_STDFILE(_IO_stdin_
, 0, 0, _IO_NO_WRITES
);
61 DEF_STDFILE(_IO_stdout_
, 1, &_IO_stdin_
.file
, _IO_NO_READS
);
62 DEF_STDFILE(_IO_stderr_
, 2, &_IO_stdout_
.file
,
63 _IO_NO_READS
+_IO_UNBUFFERED
);
65 #ifdef _STDIO_USES_IOSTREAM
66 _IO_FILE
*_IO_list_all
= &_IO_stderr_
.file
;
67 #else /* !_STDIO_USES_IOSTREAM */
68 #include "stdiostream.h"
70 struct _IO_fake_stdiobuf
{
78 /* Define stdiobuf_vtable as a name for the virtual function table
79 of the stdiobuf class. */
80 #ifndef stdiobuf_vtable
82 extern struct _IO_jump_t stdiobuf_vtable
83 asm (_G_VTABLE_LABEL_PREFIX
84 #if _G_VTABLE_LABEL_HAS_LENGTH
89 #if _G_VTABLE_LABEL_HAS_LENGTH
90 #define stdiobuf_vtable _G_VTABLE_LABEL_PREFIX_ID##8stdiobuf
92 #define stdiobuf_vtable _G_VTABLE_LABEL_PREFIX_ID##stdiobuf
94 extern struct _IO_jump_t stdiobuf_vtable
;
95 #endif /* !__GNUC__ */
96 #endif /* !stdiobuf_vtable */
98 #if _IO_UNIFIED_JUMPTABLES
99 #define JUMP_PTR /* Nothing */
101 #define JUMP_PTR &_IO_streambuf_jumps,
104 #define DEF_STDIOFILE(NAME, FD, FILE, FLAGS, CHAIN) \
105 struct _IO_fake_stdiobuf NAME = \
106 {{{ _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+_IO_UNBUFFERED+FLAGS, \
107 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, CHAIN, JUMP_PTR FD},\
108 &stdiobuf_vtable}, FILE}
110 DEF_STDIOFILE(_IO_stdin_buf
, 0, stdin
, _IO_NO_WRITES
, &_IO_stderr_
.file
);
111 DEF_STDIOFILE(_IO_stdout_buf
, 1, stdout
, _IO_NO_READS
, &_IO_stdin_buf
.s
.file
);
112 DEF_STDIOFILE(_IO_stderr_buf
, 2, stderr
, _IO_NO_READS
, &_IO_stdout_buf
.s
.file
);
114 _IO_FILE
*_IO_list_all
= &_IO_stderr_buf
.s
.file
;
115 #endif /* !_STDIO_USES_IOSTREAM */