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428
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1 /*
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2 Copyright (C) 1995 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 /* Synched up with: Not really in FSF. */
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22
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23 #ifdef HAVE_VFORK_H
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24 # include <vfork.h>
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25 #endif
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26
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27 #include "systime.h" /* necessary for sys/resource.h; also gets the
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28 FD_* defines on some systems. */
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29 #ifndef WINDOWSNT
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30 #include <sys/resource.h>
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31 #endif
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32
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33 #if !defined (NO_SUBPROCESSES)
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34
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35 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
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36 # include <sys/types.h> /* AJK */
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37 # include <sys/socket.h>
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38 # include <netdb.h>
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39 # include <netinet/in.h>
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40 # include <arpa/inet.h>
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41 #ifdef NEED_NET_ERRNO_H
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42 #include <net/errno.h>
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43 #endif /* NEED_NET_ERRNO_H */
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44 #elif defined (SKTPAIR)
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45 # include <sys/socket.h>
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46 #endif /* HAVE_SOCKETS */
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47
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48 /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */
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49 #ifdef HAVE_BROKEN_INET_ADDR
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50 # define IN_ADDR struct in_addr
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51 # define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1)
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52 #else
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53 # if (LONGBITS > 32)
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54 # define IN_ADDR unsigned int
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55 # else
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56 # define IN_ADDR unsigned long
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57 # endif
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58 # define NUMERIC_ADDR_ERROR (numeric_addr == (IN_ADDR) -1)
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59 #endif
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60
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61 /* Define first descriptor number available for subprocesses. */
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62 #define FIRST_PROC_DESC 3
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63
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64 #ifdef IRIS
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65 # include <sys/sysmacros.h> /* for "minor" */
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66 #endif /* not IRIS */
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67
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68 #endif /* !NO_SUBPROCESSES */
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69
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70 #ifdef AIX
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71 #include <sys/select.h>
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72 #endif
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73
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74 #ifdef FD_SET
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75
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76 /* We could get this from param.h, but better not to depend on finding that.
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77 And better not to risk that it might define other symbols used in this
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78 file. */
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79 # ifdef FD_SETSIZE
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80 # define MAXDESC FD_SETSIZE
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81 # else
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82 # define MAXDESC 64
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83 # endif /* FD_SETSIZE */
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84 # define SELECT_TYPE fd_set
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85
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86 #else /* no FD_SET */
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87
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88 # define MAXDESC 32
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89 # define SELECT_TYPE int
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90
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91 /* Define the macros to access a single-int bitmap of descriptors. */
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92 # define FD_SET(n, p) (*(p) |= (1 << (n)))
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93 # define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
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94 # define FD_ISSET(n, p) (*(p) & (1 << (n)))
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95 # define FD_ZERO(p) (*(p) = 0)
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96
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97 #endif /* no FD_SET */
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98
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99 int poll_fds_for_input (SELECT_TYPE mask);
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100
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101 #ifdef MSDOS
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102 /* #include <process.h> */
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103 /* Damn that local process.h! Instead we can define P_WAIT ourselves. */
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104 #define P_WAIT 1
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105 #endif
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