| 1 | /* Define wait system call interface for Emacs. |
| 2 | Copyright (C) 1993, 1994, 1995, 2000, 2001, 2002, 2003, 2004, |
| 3 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | /* Define the structure that the wait system call stores. |
| 23 | On many systems, there is a structure defined for this. |
| 24 | But on vanilla-ish USG systems there is not. */ |
| 25 | |
| 26 | #ifndef EMACS_SYSWAIT_H |
| 27 | #define EMACS_SYSWAIT_H |
| 28 | |
| 29 | #ifndef VMS |
| 30 | |
| 31 | /* This is now really the approach recommended by Autoconf. If this |
| 32 | doesn't cause trouble anywhere, remove the original code, which is |
| 33 | #if'd out below. */ |
| 34 | |
| 35 | #if 1 |
| 36 | #include <sys/types.h> |
| 37 | |
| 38 | #ifdef HAVE_SYS_WAIT_H /* We have sys/wait.h with POSIXoid definitions. */ |
| 39 | #include <sys/wait.h> |
| 40 | #endif /* !HAVE_SYS_WAIT_H */ |
| 41 | |
| 42 | #ifndef WCOREDUMP /* not POSIX */ |
| 43 | #define WCOREDUMP(status) ((status) & 0x80) |
| 44 | #endif |
| 45 | #ifndef WEXITSTATUS |
| 46 | #define WEXITSTATUS(status) (((status) & 0xff00) >> 8) |
| 47 | #endif |
| 48 | #ifndef WIFEXITED |
| 49 | #define WIFEXITED(status) (WTERMSIG(status) == 0) |
| 50 | #endif |
| 51 | #ifndef WIFSTOPPED |
| 52 | #define WIFSTOPPED(status) (((status) & 0xff) == 0x7f) |
| 53 | #endif |
| 54 | #ifndef WIFSIGNALED |
| 55 | #define WIFSIGNALED(status) (!WIFSTOPPED(status) && !WIFEXITED(status)) |
| 56 | #endif |
| 57 | #ifndef WSTOPSIG |
| 58 | #define WSTOPSIG(status) WEXITSTATUS(status) |
| 59 | #endif |
| 60 | #ifndef WTERMSIG |
| 61 | #define WTERMSIG(status) ((status) & 0x7f) |
| 62 | #endif |
| 63 | |
| 64 | #undef WAITTYPE |
| 65 | #define WAITTYPE int |
| 66 | #undef WRETCODE |
| 67 | #define WRETCODE(status) WEXITSTATUS (status) |
| 68 | |
| 69 | #else /* 0 */ |
| 70 | |
| 71 | #ifndef WAITTYPE |
| 72 | |
| 73 | #ifdef WAIT_USE_INT |
| 74 | /* Some systems have union wait in their header, but we should use |
| 75 | int regardless of that. */ |
| 76 | #include <sys/wait.h> |
| 77 | #define WAITTYPE int |
| 78 | #define WRETCODE(w) WEXITSTATUS (w) |
| 79 | |
| 80 | #else /* not WAIT_USE_INT */ |
| 81 | |
| 82 | #if (!defined (BSD_SYSTEM) && !(defined (HPUX) && !defined (NOMULTIPLEJOBS)) && !defined (HAVE_WAIT_HEADER)) |
| 83 | #define WAITTYPE int |
| 84 | #define WIFSTOPPED(w) ((w&0377) == 0177) |
| 85 | #define WIFSIGNALED(w) ((w&0377) != 0177 && (w&~0377) == 0) |
| 86 | #define WIFEXITED(w) ((w&0377) == 0) |
| 87 | #define WRETCODE(w) (w >> 8) |
| 88 | #define WSTOPSIG(w) (w >> 8) |
| 89 | #define WTERMSIG(w) (w & 0177) |
| 90 | #ifndef WCOREDUMP |
| 91 | #define WCOREDUMP(w) ((w&0200) != 0) |
| 92 | #endif |
| 93 | |
| 94 | #else |
| 95 | |
| 96 | #ifdef BSD4_1 |
| 97 | #include <wait.h> |
| 98 | #else |
| 99 | #include <sys/wait.h> |
| 100 | #endif /* not BSD 4.1 */ |
| 101 | |
| 102 | #define WAITTYPE union wait |
| 103 | #define WRETCODE(w) w.w_retcode |
| 104 | #undef WCOREDUMP /* Later BSDs define this name differently. */ |
| 105 | #define WCOREDUMP(w) w.w_coredump |
| 106 | |
| 107 | #if defined (HPUX) || defined (convex) |
| 108 | /* HPUX version 7 has broken definitions of these. */ |
| 109 | /* pvogel@convex.com says the convex does too. */ |
| 110 | #undef WTERMSIG |
| 111 | #undef WSTOPSIG |
| 112 | #undef WIFSTOPPED |
| 113 | #undef WIFSIGNALED |
| 114 | #undef WIFEXITED |
| 115 | #endif /* HPUX | convex */ |
| 116 | |
| 117 | #ifndef WTERMSIG |
| 118 | #define WTERMSIG(w) w.w_termsig |
| 119 | #endif |
| 120 | #ifndef WSTOPSIG |
| 121 | #define WSTOPSIG(w) w.w_stopsig |
| 122 | #endif |
| 123 | #ifndef WIFSTOPPED |
| 124 | #define WIFSTOPPED(w) (WTERMSIG (w) == 0177) |
| 125 | #endif |
| 126 | #ifndef WIFSIGNALED |
| 127 | #define WIFSIGNALED(w) (WTERMSIG (w) != 0177 && (WSTOPSIG (w)) == 0) |
| 128 | #endif |
| 129 | #ifndef WIFEXITED |
| 130 | #define WIFEXITED(w) (WTERMSIG (w) == 0) |
| 131 | #endif |
| 132 | #endif /* BSD_SYSTEM || HPUX */ |
| 133 | #endif /* not WAIT_USE_INT */ |
| 134 | #endif /* no WAITTYPE */ |
| 135 | |
| 136 | #endif /* 0 */ |
| 137 | |
| 138 | #else /* VMS */ |
| 139 | |
| 140 | #define WAITTYPE int |
| 141 | #define WIFSTOPPED(w) 0 |
| 142 | #define WIFSIGNALED(w) 0 |
| 143 | #define WIFEXITED(w) ((w) != -1) |
| 144 | #define WRETCODE(w) (w) |
| 145 | #define WSTOPSIG(w) (w) |
| 146 | #define WCOREDUMP(w) 0 |
| 147 | #define WTERMSIG(w) (w) |
| 148 | #include <ssdef.h> |
| 149 | #include <iodef.h> |
| 150 | #include <clidef.h> |
| 151 | #include "vmsproc.h" |
| 152 | |
| 153 | #endif /* VMS */ |
| 154 | |
| 155 | #endif /* EMACS_SYSWAIT_H */ |
| 156 | |
| 157 | /* arch-tag: 7e5d9719-ec66-4b6f-89bb-563eea16a899 |
| 158 | (do not change this comment) */ |