Commit | Line | Data |
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43626ea4 | 1 | /* Define wait system call interface for Emacs. |
d72c1cad | 2 | Copyright (C) 1993, 1994, 1995, 2000 Free Software Foundation, Inc. |
43626ea4 RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
43626ea4 RS |
20 | |
21 | /* Define the structure that the wait system call stores. | |
22 | On many systems, there is a structure defined for this. | |
23 | But on vanilla-ish USG systems there is not. */ | |
24 | ||
d72c1cad DL |
25 | #ifndef EMACS_SYSWAIT_H |
26 | #define EMACS_SYSWAIT_H | |
27 | ||
43626ea4 | 28 | #ifndef VMS |
d72c1cad DL |
29 | |
30 | /* Try the approach recommended by autoconf. If this doesn't cause | |
31 | trouble anywhere, remove the original code, which is #if'd out | |
32 | below. */ | |
33 | ||
34 | #if 1 | |
d72c1cad | 35 | #include <sys/types.h> |
1f0bb0ab | 36 | |
3bddb272 | 37 | #ifdef HAVE_SYS_WAIT_H /* We have sys/wait.h with POSIXoid definitions. */ |
1f0bb0ab | 38 | |
d72c1cad | 39 | #include <sys/wait.h> |
1f0bb0ab DL |
40 | #ifndef WCOREDUMP /* not POSIX */ |
41 | #define WCOREDUMP(status) ((status) & 0x80) | |
d72c1cad DL |
42 | #endif |
43 | ||
1f0bb0ab DL |
44 | #else /* !HAVE_SYS_WAIT_H */ |
45 | ||
46 | /* Note that sys/wait.h may still be included by stdlib.h or something | |
47 | according to XPG. */ | |
48 | ||
49 | #undef WEXITSTATUS | |
50 | #define WEXITSTATUS(status) (((status) & 0xff00) >> 8) | |
51 | #undef WIFEXITED | |
52 | #define WIFEXITED(status) (WTERMSIG(status) == 0) | |
d72c1cad | 53 | #undef WIFSTOPPED |
1f0bb0ab | 54 | #define WIFSTOPPED(status) (((status) & 0xff) == 0x7f) |
d72c1cad | 55 | #undef WIFSIGNALED |
1f0bb0ab DL |
56 | #define WIFSIGNALED(status) (!WIFSTOPPED(status) && !WIFEXITED(status)) |
57 | #undef WSTOPSIG | |
58 | #define WSTOPSIG(status) WEXITSTATUS(status) | |
59 | #undef WTERMSIG | |
60 | #define WTERMSIG(status) ((status) & 0x7f) | |
61 | #undef WCOREDUMP | |
62 | #define WCOREDUMP(status) ((status) & 0x80) | |
63 | #endif /* HAVE_SYS_WAIT_H */ | |
d72c1cad | 64 | |
1f0bb0ab DL |
65 | #undef WAITTYPE |
66 | #define WAITTYPE int | |
67 | #undef WRETCODE | |
68 | #define WRETCODE(status) WEXITSTATUS (status) | |
d72c1cad DL |
69 | |
70 | #else /* !1 */ | |
71 | ||
43626ea4 | 72 | #ifndef WAITTYPE |
da149a8f RS |
73 | |
74 | #ifdef WAIT_USE_INT | |
75 | /* Some systems have union wait in their header, but we should use | |
76 | int regardless of that. */ | |
77 | #include <sys/wait.h> | |
78 | #define WAITTYPE int | |
79 | #define WRETCODE(w) WEXITSTATUS (w) | |
80 | ||
81 | #else /* not WAIT_USE_INT */ | |
82 | ||
6df54671 | 83 | #if (!defined (BSD_SYSTEM) && !defined (UNIPLUS) && !defined (STRIDE) && !(defined (HPUX) && !defined (NOMULTIPLEJOBS)) && !defined (HAVE_WAIT_HEADER)) |
43626ea4 RS |
84 | #define WAITTYPE int |
85 | #define WIFSTOPPED(w) ((w&0377) == 0177) | |
86 | #define WIFSIGNALED(w) ((w&0377) != 0177 && (w&~0377) == 0) | |
87 | #define WIFEXITED(w) ((w&0377) == 0) | |
88 | #define WRETCODE(w) (w >> 8) | |
89 | #define WSTOPSIG(w) (w >> 8) | |
1f0bb0ab | 90 | #define WTERMSIG(w) (w & 0177) |
43626ea4 RS |
91 | #ifndef WCOREDUMP |
92 | #define WCOREDUMP(w) ((w&0200) != 0) | |
93 | #endif | |
da149a8f | 94 | |
43626ea4 | 95 | #else |
da149a8f | 96 | |
43626ea4 RS |
97 | #ifdef BSD4_1 |
98 | #include <wait.h> | |
99 | #else | |
100 | #include <sys/wait.h> | |
101 | #endif /* not BSD 4.1 */ | |
102 | ||
103 | #define WAITTYPE union wait | |
104 | #define WRETCODE(w) w.w_retcode | |
4f480b74 | 105 | #undef WCOREDUMP /* Later BSDs define this name differently. */ |
43626ea4 RS |
106 | #define WCOREDUMP(w) w.w_coredump |
107 | ||
b01b093a | 108 | #if defined (HPUX) || defined (convex) |
43626ea4 | 109 | /* HPUX version 7 has broken definitions of these. */ |
b01b093a | 110 | /* pvogel@convex.com says the convex does too. */ |
43626ea4 RS |
111 | #undef WTERMSIG |
112 | #undef WSTOPSIG | |
113 | #undef WIFSTOPPED | |
114 | #undef WIFSIGNALED | |
115 | #undef WIFEXITED | |
b01b093a | 116 | #endif /* HPUX | convex */ |
43626ea4 RS |
117 | |
118 | #ifndef WTERMSIG | |
119 | #define WTERMSIG(w) w.w_termsig | |
120 | #endif | |
121 | #ifndef WSTOPSIG | |
122 | #define WSTOPSIG(w) w.w_stopsig | |
123 | #endif | |
124 | #ifndef WIFSTOPPED | |
125 | #define WIFSTOPPED(w) (WTERMSIG (w) == 0177) | |
126 | #endif | |
127 | #ifndef WIFSIGNALED | |
128 | #define WIFSIGNALED(w) (WTERMSIG (w) != 0177 && (WSTOPSIG (w)) == 0) | |
129 | #endif | |
130 | #ifndef WIFEXITED | |
131 | #define WIFEXITED(w) (WTERMSIG (w) == 0) | |
132 | #endif | |
6df54671 | 133 | #endif /* BSD_SYSTEM || UNIPLUS || STRIDE || HPUX */ |
da149a8f | 134 | #endif /* not WAIT_USE_INT */ |
43626ea4 | 135 | #endif /* no WAITTYPE */ |
da149a8f | 136 | |
d72c1cad DL |
137 | #endif /* 1 */ |
138 | ||
43626ea4 | 139 | #else /* VMS */ |
da149a8f | 140 | |
43626ea4 RS |
141 | #define WAITTYPE int |
142 | #define WIFSTOPPED(w) 0 | |
143 | #define WIFSIGNALED(w) 0 | |
144 | #define WIFEXITED(w) ((w) != -1) | |
145 | #define WRETCODE(w) (w) | |
146 | #define WSTOPSIG(w) (w) | |
147 | #define WCOREDUMP(w) 0 | |
148 | #define WTERMSIG(w) (w) | |
149 | #include <ssdef.h> | |
150 | #include <iodef.h> | |
151 | #include <clidef.h> | |
152 | #include "vmsproc.h" | |
da149a8f | 153 | |
43626ea4 | 154 | #endif /* VMS */ |
d72c1cad DL |
155 | |
156 | #endif /* EMACS_SYSWAIT_H */ |