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428
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1 /* Processes implementation header
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2 Copyright (C) 1985, 1992, 1993, 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 /* This file must be only included by the process implementation files:
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22 process-unix.c, process-msw.c etc. The Lisp_Process structure and other
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23 contents of this file is not exported to the rest of the world */
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24
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440
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25 #ifndef INCLUDED_procimpl_h_
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26 #define INCLUDED_procimpl_h_
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428
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27
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28 /*
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29 * Structure which keeps methods of the process implementation.
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30 * There is only one object of this class exists in a particular
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31 * XEmacs implementation.
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32 */
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33
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34 /* #### Comment me... */
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35
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36 struct process_methods
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37 {
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440
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38 void (*mark_process_data) (Lisp_Process *proc);
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39 void (*print_process_data) (Lisp_Process *proc, Lisp_Object printcharfun);
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40 void (*finalize_process_data) (Lisp_Process *proc, int for_disksave);
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41 void (*alloc_process_data) (Lisp_Process *p);
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42 void (*init_process_io_handles) (Lisp_Process *p,
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428
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43 void* in, void* out, int flags);
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440
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44 int (*create_process) (Lisp_Process *p,
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428
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45 Lisp_Object *argv, int nargv,
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46 Lisp_Object program, Lisp_Object cur_dir);
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440
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47 int (*tooltalk_connection_p) (Lisp_Process *p);
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428
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48 #ifdef HAVE_SOCKETS
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49 void (*open_network_stream) (Lisp_Object name, Lisp_Object host,
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50 Lisp_Object service, Lisp_Object protocol,
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51 void** vinfd, void** voutfd);
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52 #ifdef HAVE_MULTICAST
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53 void (*open_multicast_group) (Lisp_Object name, Lisp_Object dest,
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54 Lisp_Object port, Lisp_Object ttl,
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55 void** vinfd, void** voutfd);
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56 #endif /* HAVE_MULTICAST */
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57 #endif /* HAVE_SOCKETS */
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58 Lisp_Object (*canonicalize_host_name) (Lisp_Object host);
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440
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59 int (*set_window_size) (Lisp_Process* p, int height, int width);
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428
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60 void (*send_process) (Lisp_Object proc, struct lstream* lstream);
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61 void (*reap_exited_processes) (void);
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440
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62 void (*update_status_if_terminated) (Lisp_Process* p);
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428
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63 void (*kill_child_process) (Lisp_Object proc, int signo,
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64 int current_group, int nomsg);
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65 int (*kill_process_by_pid) (int pid, int sigcode);
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66 int (*process_send_eof) (Lisp_Object proc);
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440
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67 Lisp_Object (*get_tty_name) (Lisp_Process *p);
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68 USID (*deactivate_process) (Lisp_Process *p);
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428
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69 void (*init_process) (void);
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70 };
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71
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72 extern struct process_methods the_process_methods;
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73
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74 /*
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75 * Accessors for process_methods
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76 */
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77
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78 #define HAS_PROCMETH_P(name) (the_process_methods.name != 0)
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79 #define PROCMETH(name, par) ((the_process_methods.name) par)
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80 #define PROCMETH_OR_GIVEN(name, par, given) (HAS_PROCMETH_P(name) ? PROCMETH(name, par) : (given))
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81 #define MAYBE_PROCMETH(name, par) do { if (HAS_PROCMETH_P(name)) PROCMETH(name, par); } while (0);
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82 #define MAYBE_LISP_PROCMETH(name, par) PROCMETH_OR_GIVEN(name, par, Qnil)
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83 #define MAYBE_INT_PROCMETH(name, par) PROCMETH_OR_GIVEN(name, par, 0)
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84 #define PROCESS_HAS_METHOD(os, name) the_process_methods.name = os##_##name
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85
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86 /*
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87 * Structure records pertinent information about open channels.
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88 * There is one channel associated with each process.
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89 */
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90
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91 struct Lisp_Process
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92 {
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93 struct lcrecord_header header;
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94 /* Name of this process */
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95 Lisp_Object name;
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96 /* List of command arguments that this process was run with */
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97 Lisp_Object command;
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98 /* (funcall FILTER PROC STRING) (if FILTER is non-nil)
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99 to dispose of a bunch of chars from the process all at once */
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100 Lisp_Object filter;
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101 /* (funcall SENTINEL PROCESS) when process state changes */
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102 Lisp_Object sentinel;
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103 /* Buffer that output is going to */
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104 Lisp_Object buffer;
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105 /* Marker set to end of last buffer-inserted output from this process */
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106 Lisp_Object mark;
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107 /* Lisp_Int of subprocess' PID, or a cons of
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108 service/host if this is really a network connection */
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109 Lisp_Object pid;
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110
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111 /* Symbol indicating status of process.
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112 This may be a symbol: run, stop, exit, signal */
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113 Lisp_Object status_symbol;
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114
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115 /* Exit code if process has terminated,
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116 signal which stopped/interrupted process
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117 or 0 if process is running */
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118 int exit_code;
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119 /* Non-false if process has exited and "dumped core" on its way down */
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120 char core_dumped;
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121
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122 /* This next field is only actually used #ifdef ENERGIZE */
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123 /* if this flag is not NIL, then filter will do the read on the
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124 channel, rather than having a call to make_string.
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125 This only works if the filter is a subr. */
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126 char filter_does_read;
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127 /* Non-nil means kill silently if Emacs is exited. */
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128 char kill_without_query;
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129 char selected;
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130 /* Event-count of last event in which this process changed status. */
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131 volatile int tick;
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132 /* Event-count of last such event reported. */
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133 int update_tick;
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134 /* Low level streams used in input and output, connected to child */
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135 Lisp_Object pipe_instream;
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136 Lisp_Object pipe_outstream;
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137 #ifdef FILE_CODING
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138 /* Data end streams, decoding and encoding pipe_* streams */
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139 Lisp_Object coding_instream;
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140 Lisp_Object coding_outstream;
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141 #endif
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142
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143 /* Implementation dependent data */
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144 void *process_data;
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145 };
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146
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147 /* Macros to refer to data connection streams */
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148 #ifdef FILE_CODING
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149 #define DATA_INSTREAM(p) (p)->coding_instream
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150 #define DATA_OUTSTREAM(p) (p)->coding_outstream
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151 #else
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152 #define DATA_INSTREAM(p) (p)->pipe_instream
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153 #define DATA_OUTSTREAM(p) (p)->pipe_outstream
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154 #endif
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155
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156 /* Random externs from process.c */
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157 extern Lisp_Object Qrun, Qstop, Qopen, Qclosed;
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158 extern Lisp_Object Qtcp, Qudp;
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159 extern Lisp_Object Vprocess_connection_type;
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160 extern Lisp_Object Vprocess_list;
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161
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162 extern struct hash_table *usid_to_process;
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163
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164 extern volatile int process_tick;
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165
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166 extern int windowed_process_io;
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167
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168 #ifdef HAVE_MULTICAST
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169 extern Lisp_Object Qmulticast;
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170 #endif
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171
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172 #ifdef PROCESS_IO_BLOCKING
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173 extern Lisp_Object network_stream_blocking_port_list;
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174 #endif /* PROCESS_IO_BLOCKING */
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175
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176 Lisp_Object make_process_internal (Lisp_Object name);
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440
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177 void init_process_io_handles (Lisp_Process *p, void* in,
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428
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178 void* out, int flags);
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179 void send_process (Lisp_Object proc,
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180 Lisp_Object relocatable,
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442
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181 const Bufbyte *nonrelocatable,
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428
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182 int start, int len);
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183
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440
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184 #endif /* INCLUDED_procimpl_h_ */
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