Mercurial > nand-ecoscentric
annotate packages/language/c/libc/stdio/current/include/stream.hxx @ 171:42f843b391aa
Merge from eCos master repository on 2001-07-18-03:13:25-BST
| author | jlarmour |
|---|---|
| date | Wed, 18 Jul 2001 11:38:39 +0000 |
| parents | b939e9cada46 |
| children | e0c0827131d1 |
| rev | line source |
|---|---|
|
115
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
1 #ifndef CYGONCE_LIBC_STDIO_STREAM_HXX |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
2 #define CYGONCE_LIBC_STDIO_STREAM_HXX |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
3 //======================================================================== |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
4 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
5 // stream.hxx |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
6 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
7 // Internal C library stdio stream interface definitions |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
8 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
9 //======================================================================== |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
10 //####COPYRIGHTBEGIN#### |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
11 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
12 // ------------------------------------------- |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
13 // The contents of this file are subject to the Red Hat eCos Public License |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
14 // Version 1.1 (the "License"); you may not use this file except in |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
15 // compliance with the License. You may obtain a copy of the License at |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
16 // http://www.redhat.com/ |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
17 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
18 // Software distributed under the License is distributed on an "AS IS" |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
19 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
20 // License for the specific language governing rights and limitations under |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
21 // the License. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
22 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
23 // The Original Code is eCos - Embedded Configurable Operating System, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
24 // released September 30, 1998. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
25 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
26 // The Initial Developer of the Original Code is Red Hat. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
27 // Portions created by Red Hat are |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
28 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
29 // All Rights Reserved. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
30 // ------------------------------------------- |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
31 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
32 //####COPYRIGHTEND#### |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
33 //======================================================================== |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
34 //#####DESCRIPTIONBEGIN#### |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
35 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
36 // Author(s): jlarmour |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
37 // Contributors: |
|
156
b939e9cada46
Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
115
diff
changeset
|
38 // Date: 2001-03-16 |
|
115
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
39 // Purpose: |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
40 // Description: |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
41 // Usage: #include <cyg/libc/stdio/stream.hxx> |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
42 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
43 //####DESCRIPTIONEND#### |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
44 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
45 //======================================================================== |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
46 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
47 // CONFIGURATION |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
48 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
49 #include <pkgconf/libc_stdio.h> // Configuration header |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
50 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
51 // INCLUDES |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
52 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
53 #include <cyg/infra/cyg_type.h> // Common project-wide type definitions |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
54 #include <cyg/infra/cyg_ass.h> // Get assertion macros, as appropriate |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
55 #include <errno.h> // Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
56 #include <stdio.h> // fpos_t and IOBUF defines |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
57 #include <cyg/libc/stdio/io.hxx> // Physical IO support |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
58 #include <cyg/libc/stdio/streambuf.hxx> // Stdio stream file buffers |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
59 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
60 #ifdef CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
61 #include <pkgconf/kernel.h> |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
62 #include <cyg/kernel/mutex.hxx> // Cyg_Mutex |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
63 #endif |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
64 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
65 // TYPE DEFINITIONS |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
66 |
|
171
42f843b391aa
Merge from eCos master repository on 2001-07-18-03:13:25-BST
jlarmour
parents:
156
diff
changeset
|
67 class Cyg_StdioStream; |
|
42f843b391aa
Merge from eCos master repository on 2001-07-18-03:13:25-BST
jlarmour
parents:
156
diff
changeset
|
68 __externC Cyg_ErrNo |
|
42f843b391aa
Merge from eCos master repository on 2001-07-18-03:13:25-BST
jlarmour
parents:
156
diff
changeset
|
69 cyg_libc_stdio_flush_all_but( Cyg_StdioStream * ); |
|
42f843b391aa
Merge from eCos master repository on 2001-07-18-03:13:25-BST
jlarmour
parents:
156
diff
changeset
|
70 |
|
115
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
71 class Cyg_StdioStream |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
72 { |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
73 friend int setvbuf( FILE *, char *, int, size_t ); |
|
171
42f843b391aa
Merge from eCos master repository on 2001-07-18-03:13:25-BST
jlarmour
parents:
156
diff
changeset
|
74 friend Cyg_ErrNo |
|
42f843b391aa
Merge from eCos master repository on 2001-07-18-03:13:25-BST
jlarmour
parents:
156
diff
changeset
|
75 cyg_libc_stdio_flush_all_but( Cyg_StdioStream * ); |
|
115
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
76 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
77 private: |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
78 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
79 // error status for this file |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
80 Cyg_ErrNo error; |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
81 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
82 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
83 cyg_stdio_handle_t my_device; |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
84 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
85 #ifdef CYGFUN_LIBC_STDIO_ungetc |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
86 cyg_uint8 unread_char_buf; |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
87 #endif |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
88 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
89 #ifdef CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
90 Cyg_StdioStreamBuffer io_buf; // read/write buffer |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
91 #endif |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
92 cyg_uint8 readbuf_char; // a one character emergency "buffer" |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
93 // only used when configured to not buffer |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
94 // (i.e. !CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO) |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
95 // or set at runtime to not buffer (i.e. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
96 // buffering mode is _IONBF) |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
97 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
98 // some flags indicating the state of the file. Some of it is internal |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
99 // state, which should not be public. Use bitfields to save |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
100 // space, which means using "unsigned int" rather than cyg_uintX |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
101 struct { |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
102 unsigned int at_eof : 1; // Have we reached eof? |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
103 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
104 unsigned int opened_for_read : 1; // opened_for_read and |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
105 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
106 unsigned int opened_for_write : 1; // opened_for_write can |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
107 // be set simultaneously |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
108 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
109 unsigned int binary : 1; // opened for binary or |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
110 // text mode? |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
111 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
112 #ifdef CYGFUN_LIBC_STDIO_ungetc |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
113 unsigned int unread_char_buf_in_use : 1; // unget buf in use? |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
114 #endif |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
115 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
116 #ifdef CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
117 unsigned int buffering : 1; // Is this file buffered? |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
118 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
119 unsigned int line_buffering : 1; // If so, is it line |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
120 // buffered? If it is |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
121 // buffered, but NOT line |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
122 // buffered, it must be |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
123 // fully buffered |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
124 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
125 unsigned int last_buffer_op_was_read : 1; // did we last read from |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
126 // the buffer. If not we |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
127 // must have written |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
128 #endif |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
129 unsigned int readbuf_char_in_use : 1; // is the above |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
130 // readbuf_char in use? |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
131 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
132 } flags; |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
133 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
134 // current position for reading/writing |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
135 fpos_t position; |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
136 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
137 #ifdef CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
138 Cyg_Mutex stream_lock; // used for locking this stream |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
139 #endif // ifdef CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
140 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
141 #ifdef CYGDBG_USE_ASSERTS |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
142 // a value to check that this class is hopefully valid |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
143 cyg_ucount32 magic_validity_word; |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
144 #endif |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
145 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
146 public: |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
147 // different modes when constructing (i.e. opening). |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
148 typedef enum { |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
149 CYG_STREAM_READ, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
150 CYG_STREAM_WRITE, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
151 CYG_STREAM_READWRITE |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
152 } OpenMode; |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
153 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
154 // CONSTRUCTORS |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
155 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
156 // This constructs the stream - effectively opens the file. This is |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
157 // used for static initialisation, and actually calls construct below |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
158 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
159 // dev is a valid Cyg_Device_Table_t, although it does not have to |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
160 // be a member of the device table object itself |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
161 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
162 // open_mode is one of CYG_STREAM_READ, CYG_STREAM_WRITE or |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
163 // CYG_STREAM_READWRITE |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
164 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
165 // append is true if the file position should be set at EOF on opening |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
166 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
167 // binary is true if this is a binary stream. Otherwise it is a text |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
168 // stream and character conversions (especially newline) may occur |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
169 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
170 // buffer_mode is one of _IONBF, _IOLBF, _IOFBF (from <stdio.h>) |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
171 // If buffer_mode is _IONBF, buffer_size should still be set to 0 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
172 // and buffer_addr to NULL. If buffering is not configured, none |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
173 // of buffer_mode, buffer_size and buffer_addr have any effect |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
174 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
175 // buffer_size is the size of buffer to use |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
176 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
177 // buffer_addr is the address of a user supplied buffer. By default |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
178 // (when NULL) a system one is provided. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
179 // |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
180 // The "return code" is set by assignment to the error member of this |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
181 // stream - use the get_error() method to check |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
182 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
183 Cyg_StdioStream( cyg_stdio_handle_t dev, OpenMode open_mode, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
184 cyg_bool append, cyg_bool binary, int buffer_mode, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
185 cyg_ucount32 buffer_size=BUFSIZ, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
186 cyg_uint8 *buffer_addr=NULL ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
187 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
188 Cyg_StdioStream( OpenMode open_mode, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
189 cyg_ucount32 buffer_size=BUFSIZ, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
190 cyg_uint8 *buffer_addr=NULL ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
191 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
192 private: |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
193 void initialize( cyg_stdio_handle_t dev, OpenMode open_mode, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
194 cyg_bool append, cyg_bool binary, int buffer_mode, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
195 cyg_ucount32 buffer_size=BUFSIZ, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
196 cyg_uint8 *buffer_addr=NULL ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
197 public: |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
198 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
199 // DESTRUCTOR |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
200 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
201 ~Cyg_StdioStream(); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
202 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
203 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
204 // MEMBER FUNCTIONS |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
205 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
206 // Close the stream. This should be called before the destructor, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
207 // so we can see and report any errors produced. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
208 Cyg_ErrNo close(); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
209 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
210 // Refill read buffer from the stream - note this blocks until |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
211 // something arrives on the stream |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
212 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
213 refill_read_buffer( void ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
214 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
215 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
216 // Read not more than buffer_length bytes from the read buffer into the |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
217 // user buffer. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
218 // The number of bytes put into the user buffer is written |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
219 // into *bytes_read |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
220 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
221 read( cyg_uint8 *user_buffer, cyg_ucount32 buffer_length, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
222 cyg_ucount32 *bytes_read ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
223 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
224 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
225 // Read a single byte from the stream. Returns EAGAIN if no character |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
226 // available or EEOF if end of file (as well as setting the EOF state) |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
227 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
228 read_byte( cyg_uint8 *c ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
229 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
230 // Read a single byte from the stream, but don't remove it. Returns |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
231 // EAGAIN if no character available or EEOF if end of file (as well |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
232 // as setting the EOF state) |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
233 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
234 peek_byte( cyg_uint8 *c ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
235 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
236 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
237 // Return a byte into the stream - basically the same as ungetc() |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
238 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
239 unread_byte( cyg_uint8 c ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
240 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
241 // the number of bytes available to read without needing to refill the |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
242 // buffer |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
243 cyg_ucount32 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
244 bytes_available_to_read( void ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
245 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
246 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
247 write( const cyg_uint8 *buffer, cyg_ucount32 buffer_length, |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
248 cyg_ucount32 *bytes_written ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
249 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
250 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
251 write_byte( cyg_uint8 c ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
252 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
253 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
254 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
255 flush_output( void ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
256 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
257 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
258 flush_output_unlocked( void ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
259 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
260 // prevent multiple access in thread safe mode |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
261 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
262 // lock_me() returns false if it couldn't be locked, which could |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
263 // happen if the file descriptor is bad |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
264 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
265 cyg_bool |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
266 lock_me( void ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
267 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
268 // trylock_me() returns false if it couldn't be locked, probably |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
269 // because it is already locked |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
270 cyg_bool |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
271 trylock_me( void ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
272 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
273 void |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
274 unlock_me( void ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
275 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
276 // get error status for this file |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
277 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
278 get_error( void ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
279 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
280 // set error status for this file. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
281 void |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
282 set_error( Cyg_ErrNo errno_to_set ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
283 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
284 // are we at EOF? true means we are, false means no |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
285 cyg_bool |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
286 get_eof_state( void ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
287 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
288 // Set whether we are at EOF. |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
289 void |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
290 set_eof_state( cyg_bool eof_to_set ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
291 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
292 // retrieve position |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
293 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
294 get_position( fpos_t *pos ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
295 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
296 // set absolute position. whence is SEEK_SET, SEEK_CUR, or SEEK_END |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
297 Cyg_ErrNo |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
298 set_position( fpos_t pos, int whence ); |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
299 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
300 // Return my_device |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
301 cyg_stdio_handle_t get_dev() { return my_device; }; |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
302 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
303 CYGDBG_DEFINE_CHECK_THIS |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
304 }; |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
305 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
306 // INLINE FUNCTIONS |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
307 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
308 #include <cyg/libc/stdio/stream.inl> |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
309 |
|
156
b939e9cada46
Merge from eCos master repository on 2001-03-29-21:44:39-BST
jlarmour
parents:
115
diff
changeset
|
310 #endif // CYGONCE_LIBC_STDIO_STREAM_HXX multiple inclusion protection |
|
115
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
311 |
|
6ed91473a1cd
Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff
changeset
|
312 // EOF stream.hxx |
