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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __G_IOCHANNEL_H__
#define __G_IOCHANNEL_H__
#include <gtypes.h>
G_BEGIN_DECLS
/* GIOChannel
*/
typedef struct _GIOChannel GIOChannel;
typedef struct _GIOFuncs GIOFuncs;
typedef enum
{
G_IO_ERROR_NONE,
G_IO_ERROR_AGAIN,
G_IO_ERROR_INVAL,
G_IO_ERROR_UNKNOWN
} GIOError;
typedef enum
{
G_SEEK_CUR,
G_SEEK_SET,
G_SEEK_END
} GSeekType;
typedef enum
{
G_IO_IN GLIB_SYSDEF_POLLIN,
G_IO_OUT GLIB_SYSDEF_POLLOUT,
G_IO_PRI GLIB_SYSDEF_POLLPRI,
G_IO_ERR GLIB_SYSDEF_POLLERR,
G_IO_HUP GLIB_SYSDEF_POLLHUP,
G_IO_NVAL GLIB_SYSDEF_POLLNVAL
} GIOCondition;
struct _GIOChannel
{
guint channel_flags;
guint ref_count;
GIOFuncs *funcs;
};
typedef gboolean (*GIOFunc) (GIOChannel *source,
GIOCondition condition,
gpointer data);
struct _GIOFuncs
{
GIOError (*io_read) (GIOChannel *channel,
gchar *buf,
guint count,
guint *bytes_read);
GIOError (*io_write) (GIOChannel *channel,
gchar *buf,
guint count,
guint *bytes_written);
GIOError (*io_seek) (GIOChannel *channel,
gint offset,
GSeekType type);
void (*io_close) (GIOChannel *channel);
guint (*io_add_watch) (GIOChannel *channel,
gint priority,
GIOCondition condition,
GIOFunc func,
gpointer user_data,
GDestroyNotify notify);
void (*io_free) (GIOChannel *channel);
};
void g_io_channel_init (GIOChannel *channel);
void g_io_channel_ref (GIOChannel *channel);
void g_io_channel_unref (GIOChannel *channel);
GIOError g_io_channel_read (GIOChannel *channel,
gchar *buf,
guint count,
guint *bytes_read);
GIOError g_io_channel_write (GIOChannel *channel,
gchar *buf,
guint count,
guint *bytes_written);
GIOError g_io_channel_seek (GIOChannel *channel,
gint offset,
GSeekType type);
void g_io_channel_close (GIOChannel *channel);
guint g_io_add_watch_full (GIOChannel *channel,
gint priority,
GIOCondition condition,
GIOFunc func,
gpointer user_data,
GDestroyNotify notify);
guint g_io_add_watch (GIOChannel *channel,
GIOCondition condition,
GIOFunc func,
gpointer user_data);
/* On Unix, IO channels created with this function for any file
* descriptor or socket.
*
* On Win32, use this only for files opened with the MSVCRT (the
* Microsoft run-time C library) _open() or _pipe, including file
* descriptors 0, 1 and 2 (corresponding to stdin, stdout and stderr).
*
* The term file descriptor as used in the context of Win32 refers to
* the emulated Unix-like file descriptors MSVCRT provides. The native
* corresponding concept is file HANDLE. There isn't as of yet a way to
* get GIOChannels for file HANDLEs.
*/
GIOChannel* g_io_channel_unix_new (int fd);
gint g_io_channel_unix_get_fd (GIOChannel *channel);
#ifdef G_OS_WIN32
#define G_WIN32_MSG_HANDLE 19981206
/* Use this to get a GPollFD from a GIOChannel, so that you can call
* g_io_channel_win32_poll(). After calling this you should only use
* g_io_channel_read() to read from the GIOChannel, i.e. never read()
* or recv() from the underlying file descriptor or SOCKET.
*/
void g_io_channel_win32_make_pollfd (GIOChannel *channel,
GIOCondition condition,
GPollFD *fd);
/* This can be used to wait a until at least one of the channels is readable.
* On Unix you would do a select() on the file descriptors of the channels.
* This should probably be available for all platforms?
*/
gint g_io_channel_win32_poll (GPollFD *fds,
gint n_fds,
gint timeout);
/* This is used to add polling for Windows messages. GDK (GTk+) programs
* should *not* use this.
*/
void g_main_poll_win32_msg_add (gint priority,
GPollFD *fd,
guint hwnd);
/* An IO channel for Windows messages for window handle hwnd. */
GIOChannel *g_io_channel_win32_new_messages (guint hwnd);
/* An IO channel for C runtime (emulated Unix-like) file
* descriptors. Identical to g_io_channel_unix_new above.
* After calling g_io_add_watch() on a IO channel returned
* by this function, you shouldn't call read() on the file
* descriptor.
*/
GIOChannel* g_io_channel_win32_new_fd (int fd);
/* Get the C runtime file descriptor of a channel. */
gint g_io_channel_win32_get_fd (GIOChannel *channel);
/* An IO channel for a SOCK_STREAM winsock socket. The parameter
* should be a SOCKET. After calling g_io_add_watch() on a IO channel
* returned by this function, you shouldn't call recv() on the SOCKET.
*/
GIOChannel *g_io_channel_win32_new_stream_socket (int socket);
#endif
G_END_DECLS
#endif /* __G_IOCHANNEL_H__ */
|
