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comparison src/sysdep.h @ 428:3ecd8885ac67 r21-2-22

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Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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427:0a0253eac470 428:3ecd8885ac67
1 /* System-dependent prototypes
2 Copyright (C) 1985, 1993, 1994 Free Software Foundation, Inc.
3
4 This file is part of XEmacs.
5
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
9 later version.
10
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 /* Synched up with: FSF 19.30. Split out of sysdep.c/emacs.c. */
22
23 #ifndef _XEMACS_SYSDEP_H_
24 #define _XEMACS_SYSDEP_H_
25
26 #include <setjmp.h>
27
28 extern char **environ;
29
30 struct emacs_tty;
31 int emacs_get_tty (int fd, struct emacs_tty *settings);
32 int emacs_set_tty (int fd, struct emacs_tty *settings, int waitp);
33
34 int eight_bit_tty (struct device *d);
35
36 void stuff_char (struct console *con, int c);
37
38 void init_baud_rate (struct device *d);
39
40 void set_exclusive_use (int fd);
41
42 void set_descriptor_non_blocking (int fd);
43
44 void wait_without_blocking (void);
45
46 int get_pty_max_bytes (int fd);
47 Bufbyte get_eof_char (int fd);
48
49 /* Wait for subprocess with process id `pid' to terminate and
50 make sure it will get eliminated (not remain forever as a zombie) */
51 void wait_for_termination (int pid);
52
53 /* flush any pending output
54 * (may flush input as well; it does not matter the way we use it)
55 */
56 void flush_pending_output (int channel);
57
58 void child_setup_tty (int out);
59
60 /* Suspend the Emacs process; give terminal to its superior. */
61 void sys_suspend (void);
62 /* Suspend a process if possible; give terminal to its superior. */
63 void sys_suspend_process (int process);
64
65 void request_sigio (void);
66 void unrequest_sigio (void);
67
68 void stop_interrupts (void);
69 void start_interrupts (void);
70 void slow_down_interrupts (void);
71 void speed_up_interrupts (void);
72 void init_poll_for_quit (void);
73 void reset_poll_for_quit (void);
74
75 /* Used so that signals can break out of system calls that aren't
76 naturally interruptible. */
77
78 extern JMP_BUF break_system_call_jump;
79 extern volatile int can_break_system_calls;
80
81 int sys_write_1 (int fildes, CONST void *buf, size_t nbyte,
82 int allow_quit);
83 int sys_read_1 (int fildes, void *buf, size_t nbyte,
84 int allow_quit);
85
86 /* Call these functions if you want to change some terminal parameter --
87 reset the console, change the parameter, and init it again. */
88 void init_one_console (struct console *c);
89 void reset_one_console (struct console *c);
90 void init_one_device (struct device *d);
91 void reset_one_device (struct device *d);
92
93 /* Prepare all terminals for exiting Emacs; move the cursor to the
94 bottom of the frame, turn off special modes, etc. Called at exit.
95 This calls reset_one_console() on all consoles and does some other
96 stuff (e.g. fix the foreground pgroup). */
97
98 void reset_all_consoles (void);
99
100 /* Call these functions if you are going to temporarily exit back to
101 the shell (e.g. when suspending). This calls reset_one_console()
102 on the initial console and does some other stuff (e.g. fix the
103 foreground pgroup). */
104
105 void reset_initial_console (void);
106 void reinit_initial_console (void);
107
108 /* We muck around with our process group. This function needs
109 to be called at startup. The rest of the mucking is done as
110 part of the functions reset_all_consoles(), reset_initial_console(),
111 and reinit_initial_console(). */
112
113 void init_process_group (void);
114 void munge_tty_process_group (void);
115 void unmunge_tty_process_group (void);
116
117 void disconnect_controlling_terminal (void);
118
119 /* Return nonzero if safe to use tabs in output.
120 At the time this is called, init_sys_modes has not been done yet. */
121 int tabs_safe_p (struct device *d);
122
123 /* Get terminal size from system.
124 If zero or a negative number is stored, the value is not valid. */
125 void get_tty_device_size (struct device *d, int *widthp, int *heightp);
126 /* Set the logical window size associated with descriptor FD */
127 int set_window_size (int fd, int height, int width);
128
129 /* Set up the proper status flags for use of a pty. */
130 void setup_pty (int fd);
131
132 /* Return the address of the start of the text segment prior to unexec. */
133 char *start_of_text (void);
134 /* Return the address of the start of the data segment prior to unexec. */
135 void *start_of_data (void);
136 /* Return the address of the end of the text segment prior to unexec. */
137 char *end_of_text (void);
138 /* Return the address of the end of the data segment prior to unexec. */
139 char *end_of_data (void);
140
141 /* Get_system_name returns as its value a string for system-name to return. */
142 void init_system_name (void);
143
144 #ifndef HAVE_GETCWD
145 char *getcwd (char *pathname, int size);
146 #endif
147
148 #ifndef HAVE_RENAME
149 int rename (CONST char *from, CONST char *to);
150 #endif
151
152 #ifndef HAVE_DUP2
153 int dup2 (int oldd, int newd);
154 #endif
155
156 #ifndef HAVE_STRERROR
157 /* X11R6 defines strerror as a macro */
158 # ifdef strerror
159 # undef strerror
160 # endif
161 CONST char *strerror (int);
162 #endif
163
164 #ifdef WINDOWSNT
165 void mswindows_set_errno (unsigned long win32_error);
166 void mswindows_set_last_errno (void);
167 #endif
168
169 int interruptible_open (CONST char *path, int oflag, int mode);
170
171 #ifndef HAVE_H_ERRNO
172 extern int h_errno;
173 #endif
174
175 #ifdef HAVE_REALPATH
176 #define xrealpath realpath
177 #else
178 char *xrealpath(CONST char *path, char resolved_path []);
179 #endif
180
181 #endif /* _XEMACS_SYSDEP_H_ */