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comparison src/nt.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 #ifndef _NT_H_
2 #define _NT_H_
3
4 /* Support routines for the NT version of XEmacs.
5 Copyright (C) 1994 Free Software Foundation, Inc.
6
7 This file is part of XEmacs.
8
9 XEmacs is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by the
11 Free Software Foundation; either version 2, or (at your option) any
12 later version.
13
14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with XEmacs; see the file COPYING. If not, write to
21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
23
24 /* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
25 /* Sync'ed with Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
26
27 /* #define FULL_DEBUG */
28
29 #ifdef DEBUG_XEMACS
30 #define DebPrint(stuff) _DebPrint stuff
31 #else
32 #define DebPrint(stuff)
33 #endif
34
35 #define R_OK 4
36 #define W_OK 2
37 #ifdef X_OK
38 #undef X_OK
39 #endif
40 #define X_OK 1
41 #define F_OK 0
42
43 /* File descriptor set emulation. */
44
45 #if 0 /* These are defined in winsock.h.
46 FD_SETSIZE is defined 64. Let's not full the runtime. */
47
48 /* The MSVC multithreaded statically-linked runtime library has limit
49 of 256 descriptors by default (the single-threaded static library
50 has a limit of 64 descriptors, and the DLL versions both have a
51 limit of 512). Beware. Should this be set to 512? */
52 #define FD_SETSIZE 256
53 typedef struct {
54 unsigned int bits[FD_SETSIZE / 32];
55 } fd_set;
56
57 /* standard access macros */
58 #define FD_SET(n, p) \
59 do { \
60 if ((n) < FD_SETSIZE) { \
61 (p)->bits[(n)/32] |= (1 << (n)%32); \
62 } \
63 } while (0)
64 #define FD_CLR(n, p) \
65 do { \
66 if ((n) < FD_SETSIZE) { \
67 (p)->bits[(n)/32] &= ~(1 << (n)%32); \
68 } \
69 } while (0)
70 #define FD_ISSET(n, p) ((n) < FD_SETSIZE ? ((p)->bits[(n)/32] & (1 << (n)%32)) : 0)
71 #define FD_ZERO(p) memset((p), 0, sizeof(fd_set))
72
73 #define SELECT_TYPE fd_set
74 #define MAXDESC FD_SETSIZE
75
76 #endif /* 0 */
77
78 /* ------------------------------------------------------------------------- */
79
80 /* child_process.status values */
81 enum {
82 STATUS_READ_ERROR = -1,
83 STATUS_READ_READY,
84 STATUS_READ_IN_PROGRESS,
85 STATUS_READ_FAILED,
86 STATUS_READ_SUCCEEDED,
87 STATUS_READ_ACKNOWLEDGED
88 };
89
90 /* This structure is used for both pipes and sockets; for
91 a socket, the process handle in pi is NULL. */
92 typedef struct _child_process
93 {
94 int fd;
95 int pid;
96 HANDLE char_avail;
97 HANDLE char_consumed;
98 HANDLE thrd;
99 HWND hwnd;
100 PROCESS_INFORMATION procinfo;
101 volatile int status;
102 char chr;
103 } child_process;
104
105 #define MAX_CHILDREN MAXDESC/2
106 #define CHILD_ACTIVE(cp) ((cp)->char_avail != NULL)
107
108 /* parallel array of private info on file handles */
109 typedef struct
110 {
111 unsigned flags;
112 HANDLE hnd;
113 child_process * cp;
114 } filedesc;
115
116 extern filedesc fd_info [ MAXDESC ];
117
118 /* fd_info flag definitions */
119 #define FILE_READ 0x0001
120 #define FILE_WRITE 0x0002
121 #define FILE_BINARY 0x0010
122 #define FILE_LAST_CR 0x0020
123 #define FILE_AT_EOF 0x0040
124 #define FILE_SEND_SIGCHLD 0x0080
125 #define FILE_PIPE 0x0100
126 #define FILE_SOCKET 0x0200
127
128 extern child_process * new_child (void);
129 extern void delete_child (child_process *cp);
130
131 /* ------------------------------------------------------------------------- */
132
133 /* Get long (aka "true") form of file name, if it exists. */
134 extern BOOL win32_get_long_filename (char * name, char * buf, int size);
135
136 /* Prepare our standard handles for proper inheritance by child processes. */
137 extern void prepare_standard_handles (int in, int out,
138 int err, HANDLE handles[4]);
139
140 /* Reset our standard handles to their original state. */
141 extern void reset_standard_handles (int in, int out,
142 int err, HANDLE handles[4]);
143
144 /* Return the string resource associated with KEY of type TYPE. */
145 extern LPBYTE nt_get_resource (char * key, LPDWORD type);
146
147 void set_process_dir (const char * dir);
148 time_t convert_time (FILETIME ft);
149
150 extern void init_ntproc ();
151 extern void term_ntproc ();
152
153 #endif /* _NT_H_ */