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428
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1 /* Support routines for the NT version of XEmacs.
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2 Copyright (C) 1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
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22 /* Sync'ed with Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
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23
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24 /* #define FULL_DEBUG */
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25
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440
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26 #ifndef INCLUDED_nt_h_
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27 #define INCLUDED_nt_h_
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28
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428
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29 #ifdef DEBUG_XEMACS
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30 #define DebPrint(stuff) _DebPrint stuff
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31 #else
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32 #define DebPrint(stuff)
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33 #endif
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34
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35 #define R_OK 4
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36 #define W_OK 2
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37 #ifdef X_OK
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38 #undef X_OK
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39 #endif
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40 #define X_OK 1
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41 #define F_OK 0
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42
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43 /* File descriptor set emulation. */
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44
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45 #if 0 /* These are defined in winsock.h.
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46 FD_SETSIZE is defined 64. Let's not full the runtime. */
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47
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48 /* The MSVC multithreaded statically-linked runtime library has limit
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49 of 256 descriptors by default (the single-threaded static library
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50 has a limit of 64 descriptors, and the DLL versions both have a
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51 limit of 512). Beware. Should this be set to 512? */
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52 #define FD_SETSIZE 256
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53 typedef struct {
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54 unsigned int bits[FD_SETSIZE / 32];
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55 } fd_set;
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56
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57 /* standard access macros */
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58 #define FD_SET(n, p) \
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59 do { \
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60 if ((n) < FD_SETSIZE) { \
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61 (p)->bits[(n)/32] |= (1 << (n)%32); \
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62 } \
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63 } while (0)
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64 #define FD_CLR(n, p) \
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65 do { \
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66 if ((n) < FD_SETSIZE) { \
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67 (p)->bits[(n)/32] &= ~(1 << (n)%32); \
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68 } \
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69 } while (0)
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70 #define FD_ISSET(n, p) ((n) < FD_SETSIZE ? ((p)->bits[(n)/32] & (1 << (n)%32)) : 0)
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71 #define FD_ZERO(p) memset((p), 0, sizeof(fd_set))
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72
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73 #define SELECT_TYPE fd_set
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74 #define MAXDESC FD_SETSIZE
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75
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76 #endif /* 0 */
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77
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78 /* ------------------------------------------------------------------------- */
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79
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80 /* child_process.status values */
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81 enum {
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82 STATUS_READ_ERROR = -1,
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83 STATUS_READ_READY,
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84 STATUS_READ_IN_PROGRESS,
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85 STATUS_READ_FAILED,
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86 STATUS_READ_SUCCEEDED,
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87 STATUS_READ_ACKNOWLEDGED
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88 };
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89
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90 /* This structure is used for both pipes and sockets; for
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91 a socket, the process handle in pi is NULL. */
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92 typedef struct _child_process
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93 {
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94 int fd;
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95 int pid;
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96 HANDLE char_avail;
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97 HANDLE char_consumed;
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98 HANDLE thrd;
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99 HWND hwnd;
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100 PROCESS_INFORMATION procinfo;
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101 volatile int status;
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102 char chr;
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103 } child_process;
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104
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105 #define MAX_CHILDREN MAXDESC/2
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106 #define CHILD_ACTIVE(cp) ((cp)->char_avail != NULL)
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107
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108 /* parallel array of private info on file handles */
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109 typedef struct
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110 {
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111 unsigned flags;
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112 HANDLE hnd;
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113 child_process * cp;
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114 } filedesc;
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115
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116 extern filedesc fd_info [ MAXDESC ];
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117
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118 /* fd_info flag definitions */
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119 #define FILE_READ 0x0001
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120 #define FILE_WRITE 0x0002
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121 #define FILE_BINARY 0x0010
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122 #define FILE_LAST_CR 0x0020
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123 #define FILE_AT_EOF 0x0040
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124 #define FILE_SEND_SIGCHLD 0x0080
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125 #define FILE_PIPE 0x0100
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126 #define FILE_SOCKET 0x0200
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127
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128 extern child_process * new_child (void);
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129 extern void delete_child (child_process *cp);
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130
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131 /* ------------------------------------------------------------------------- */
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132
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133 /* Get long (aka "true") form of file name, if it exists. */
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134 extern BOOL win32_get_long_filename (char * name, char * buf, int size);
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135
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136 /* Prepare our standard handles for proper inheritance by child processes. */
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137 extern void prepare_standard_handles (int in, int out,
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138 int err, HANDLE handles[4]);
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139
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140 /* Reset our standard handles to their original state. */
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141 extern void reset_standard_handles (int in, int out,
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142 int err, HANDLE handles[4]);
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143
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144 /* Return the string resource associated with KEY of type TYPE. */
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145 extern LPBYTE nt_get_resource (char * key, LPDWORD type);
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146
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147 void set_process_dir (const char * dir);
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148 time_t convert_time (FILETIME ft);
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149
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150 extern void init_ntproc ();
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151 extern void term_ntproc ();
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152
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440
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153 #endif /* INCLUDED_nt_h_ */
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