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100
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1 #ifndef _NT_H_
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2 #define _NT_H_
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3
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4 /* Support routines for the NT version of XEmacs.
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5 Copyright (C) 1994 Free Software Foundation, Inc.
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6
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7 This file is part of XEmacs.
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8
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9 XEmacs is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 2, or (at your option) any
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12 later version.
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13
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14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with XEmacs; see the file COPYING. If not, write to
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21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 Boston, MA 02111-1307, USA. */
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23
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24 /* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
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209
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25 /* Sync'ed with Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
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100
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26
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27 /* #define FULL_DEBUG */
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28 #define EMACSDEBUG
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29
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30 #ifdef EMACSDEBUG
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31 #define DebPrint(stuff) _DebPrint stuff
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32 #else
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33 #define DebPrint(stuff)
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34 #endif
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35
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36 #define R_OK 4
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37 #define W_OK 2
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38 #define X_OK 1
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39 #define F_OK 0
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40
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41 /* File descriptor set emulation. */
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42
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43 /* MSVC runtime library has limit of 64 descriptors by default */
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44 #define FD_SETSIZE 64
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45 typedef struct {
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46 unsigned int bits[FD_SETSIZE / 32];
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47 } fd_set;
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48
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49 /* standard access macros */
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50 #define FD_SET(n, p) \
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51 do { \
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52 if ((n) < FD_SETSIZE) { \
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53 (p)->bits[(n)/32] |= (1 << (n)%32); \
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54 } \
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55 } while (0)
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56 #define FD_CLR(n, p) \
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57 do { \
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58 if ((n) < FD_SETSIZE) { \
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59 (p)->bits[(n)/32] &= ~(1 << (n)%32); \
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60 } \
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61 } while (0)
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62 #define FD_ISSET(n, p) ((n) < FD_SETSIZE ? ((p)->bits[(n)/32] & (1 << (n)%32)) : 0)
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63 #define FD_ZERO(p) memset((p), 0, sizeof(fd_set))
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64
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65 #define SELECT_TYPE fd_set
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66
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67 /* ------------------------------------------------------------------------- */
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68
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69 /* child_process.status values */
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70 enum {
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71 STATUS_READ_ERROR = -1,
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72 STATUS_READ_READY,
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73 STATUS_READ_IN_PROGRESS,
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74 STATUS_READ_FAILED,
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75 STATUS_READ_SUCCEEDED,
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76 STATUS_READ_ACKNOWLEDGED
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77 };
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78
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79 /* This structure is used for both pipes and sockets; for
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80 a socket, the process handle in pi is NULL. */
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81 typedef struct _child_process
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82 {
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83 int fd;
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84 int pid;
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85 HANDLE char_avail;
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86 HANDLE char_consumed;
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87 HANDLE thrd;
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209
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88 HWND hwnd;
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100
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89 PROCESS_INFORMATION procinfo;
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90 volatile int status;
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91 char chr;
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92 } child_process;
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93
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94 #define MAXDESC FD_SETSIZE
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95 #define MAX_CHILDREN MAXDESC/2
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96 #define CHILD_ACTIVE(cp) ((cp)->char_avail != NULL)
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97
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98 /* parallel array of private info on file handles */
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99 typedef struct
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100 {
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101 unsigned flags;
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102 HANDLE hnd;
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103 child_process * cp;
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104 } filedesc;
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105
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106 extern filedesc fd_info [ MAXDESC ];
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107
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108 /* fd_info flag definitions */
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109 #define FILE_READ 0x0001
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110 #define FILE_WRITE 0x0002
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111 #define FILE_BINARY 0x0010
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209
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112 #define FILE_LAST_CR 0x0020
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113 #define FILE_AT_EOF 0x0040
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114 #define FILE_SEND_SIGCHLD 0x0080
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100
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115 #define FILE_PIPE 0x0100
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116 #define FILE_SOCKET 0x0200
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117
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118 extern child_process * new_child (void);
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119 extern void delete_child (child_process *cp);
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120
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121 /* ------------------------------------------------------------------------- */
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122
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209
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123 /* Get long (aka "true") form of file name, if it exists. */
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124 extern BOOL win32_get_long_filename (char * name, char * buf, int size);
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100
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125
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126 /* Prepare our standard handles for proper inheritance by child processes. */
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127 extern void prepare_standard_handles (int in, int out,
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128 int err, HANDLE handles[4]);
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129
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130 /* Reset our standard handles to their original state. */
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131 extern void reset_standard_handles (int in, int out,
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132 int err, HANDLE handles[4]);
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133
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134 /* Return the string resource associated with KEY of type TYPE. */
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135 extern LPBYTE nt_get_resource (char * key, LPDWORD type);
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136
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137 extern void init_ntproc ();
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138 extern void term_ntproc ();
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139
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140 #endif /* _NT_H_ */
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