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e588809c JR |
1 | #ifndef EMACS_W32_H |
2 | #define EMACS_W32_H | |
b3fa71dc | 3 | |
95ed0025 | 4 | /* Support routines for the NT version of Emacs. |
429ab54e | 5 | Copyright (C) 1994, 2001, 2002, 2003, 2004, 2005, |
8cabe764 | 6 | 2006, 2007, 2008 Free Software Foundation, Inc. |
95ed0025 RS |
7 | |
8 | This file is part of GNU Emacs. | |
9 | ||
10 | GNU Emacs is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 12 | the Free Software Foundation; either version 3, or (at your option) |
95ed0025 RS |
13 | any later version. |
14 | ||
15 | GNU Emacs is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
22 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
23 | Boston, MA 02110-1301, USA. */ | |
95ed0025 | 24 | |
7482f2ec | 25 | |
b3fa71dc GV |
26 | /* File descriptor set emulation. */ |
27 | ||
28 | /* MSVC runtime library has limit of 64 descriptors by default */ | |
29 | #define FD_SETSIZE 64 | |
30 | typedef struct { | |
31 | unsigned int bits[FD_SETSIZE / 32]; | |
32 | } fd_set; | |
33 | ||
34 | /* standard access macros */ | |
35 | #define FD_SET(n, p) \ | |
36 | do { \ | |
37 | if ((n) < FD_SETSIZE) { \ | |
38 | (p)->bits[(n)/32] |= (1 << (n)%32); \ | |
39 | } \ | |
40 | } while (0) | |
41 | #define FD_CLR(n, p) \ | |
42 | do { \ | |
43 | if ((n) < FD_SETSIZE) { \ | |
44 | (p)->bits[(n)/32] &= ~(1 << (n)%32); \ | |
45 | } \ | |
46 | } while (0) | |
47 | #define FD_ISSET(n, p) ((n) < FD_SETSIZE ? ((p)->bits[(n)/32] & (1 << (n)%32)) : 0) | |
48 | #define FD_ZERO(p) memset((p), 0, sizeof(fd_set)) | |
49 | ||
95ed0025 | 50 | #define SELECT_TYPE fd_set |
95ed0025 | 51 | |
b3fa71dc GV |
52 | /* ------------------------------------------------------------------------- */ |
53 | ||
54 | /* child_process.status values */ | |
55 | enum { | |
56 | STATUS_READ_ERROR = -1, | |
57 | STATUS_READ_READY, | |
58 | STATUS_READ_IN_PROGRESS, | |
59 | STATUS_READ_FAILED, | |
60 | STATUS_READ_SUCCEEDED, | |
61 | STATUS_READ_ACKNOWLEDGED | |
62 | }; | |
63 | ||
64 | /* This structure is used for both pipes and sockets; for | |
65 | a socket, the process handle in pi is NULL. */ | |
66 | typedef struct _child_process | |
67 | { | |
68 | int fd; | |
69 | int pid; | |
70 | HANDLE char_avail; | |
71 | HANDLE char_consumed; | |
72 | HANDLE thrd; | |
bb06745d | 73 | HWND hwnd; |
b3fa71dc GV |
74 | PROCESS_INFORMATION procinfo; |
75 | volatile int status; | |
76 | char chr; | |
77 | } child_process; | |
78 | ||
79 | #define MAXDESC FD_SETSIZE | |
80 | #define MAX_CHILDREN MAXDESC/2 | |
81 | #define CHILD_ACTIVE(cp) ((cp)->char_avail != NULL) | |
82 | ||
83 | /* parallel array of private info on file handles */ | |
84 | typedef struct | |
85 | { | |
86 | unsigned flags; | |
87 | HANDLE hnd; | |
88 | child_process * cp; | |
89 | } filedesc; | |
90 | ||
91 | extern filedesc fd_info [ MAXDESC ]; | |
92 | ||
93 | /* fd_info flag definitions */ | |
ead2be98 GV |
94 | #define FILE_READ 0x0001 |
95 | #define FILE_WRITE 0x0002 | |
d18f316e | 96 | #define FILE_LISTEN 0x0004 |
ead2be98 GV |
97 | #define FILE_BINARY 0x0010 |
98 | #define FILE_LAST_CR 0x0020 | |
99 | #define FILE_AT_EOF 0x0040 | |
100 | #define FILE_SEND_SIGCHLD 0x0080 | |
101 | #define FILE_PIPE 0x0100 | |
102 | #define FILE_SOCKET 0x0200 | |
2c0c4d35 | 103 | #define FILE_NDELAY 0x0400 |
b3fa71dc GV |
104 | |
105 | extern child_process * new_child (void); | |
106 | extern void delete_child (child_process *cp); | |
107 | ||
108 | /* ------------------------------------------------------------------------- */ | |
109 | ||
7482f2ec AI |
110 | /* Equivalent of strerror for W32 error codes. */ |
111 | extern char * w32_strerror (int error_no); | |
112 | ||
0c5c0e3d EZ |
113 | /* Validate a pointer. */ |
114 | extern int w32_valid_pointer_p (void *, int); | |
115 | ||
bb06745d GV |
116 | /* Get long (aka "true") form of file name, if it exists. */ |
117 | extern BOOL w32_get_long_filename (char * name, char * buf, int size); | |
95ed0025 RS |
118 | |
119 | /* Prepare our standard handles for proper inheritance by child processes. */ | |
177c0ea7 | 120 | extern void prepare_standard_handles (int in, int out, |
95ed0025 RS |
121 | int err, HANDLE handles[4]); |
122 | ||
123 | /* Reset our standard handles to their original state. */ | |
177c0ea7 | 124 | extern void reset_standard_handles (int in, int out, |
95ed0025 RS |
125 | int err, HANDLE handles[4]); |
126 | ||
46c91229 | 127 | /* Return the string resource associated with KEY of type TYPE. */ |
fbd6baed | 128 | extern LPBYTE w32_get_resource (char * key, LPDWORD type); |
b3fa71dc | 129 | |
52c7f9ee JR |
130 | extern void init_ntproc (void); |
131 | extern void term_ntproc (void); | |
132 | extern void globals_of_w32 (void); | |
133 | extern void syms_of_w32term (void); | |
134 | extern void syms_of_w32fns (void); | |
135 | extern void globals_of_w32fns (void); | |
136 | extern void syms_of_w32select (void); | |
137 | extern void globals_of_w32select (void); | |
138 | extern void term_w32select (void); | |
139 | extern void syms_of_w32menu (void); | |
140 | extern void globals_of_w32menu (void); | |
141 | extern void syms_of_fontset (void); | |
46c91229 | 142 | |
c8b67880 KS |
143 | extern int _sys_read_ahead (int fd); |
144 | extern int _sys_wait_accept (int fd); | |
145 | ||
e588809c | 146 | #endif /* EMACS_W32_H */ |
ab5796a9 MB |
147 | |
148 | /* arch-tag: 02c36b00-312b-4c4d-a1d9-f905c5e968f0 | |
149 | (do not change this comment) */ |