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[emacs.git] / src / syswait.h
blob3bc1ec7aa97a0795cf0f988182a1eb9b28934395
1 /* Define wait system call interface for Emacs.
2 Copyright (C) 1993, 1994 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
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.
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.
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
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20 /* Define the structure that the wait system call stores.
21 On many systems, there is a structure defined for this.
22 But on vanilla-ish USG systems there is not. */
24 #ifndef VMS
25 #ifndef WAITTYPE
26 #if (!defined (BSD) && !defined (UNIPLUS) && !defined (STRIDE) && !(defined (HPUX) && !defined (NOMULTIPLEJOBS)) && !defined (HAVE_WAIT_HEADER)) || defined (LINUX)
27 #define WAITTYPE int
28 #define WIFSTOPPED(w) ((w&0377) == 0177)
29 #define WIFSIGNALED(w) ((w&0377) != 0177 && (w&~0377) == 0)
30 #define WIFEXITED(w) ((w&0377) == 0)
31 #define WRETCODE(w) (w >> 8)
32 #define WSTOPSIG(w) (w >> 8)
33 #define WTERMSIG(w) (w & 0377)
34 #ifndef WCOREDUMP
35 #define WCOREDUMP(w) ((w&0200) != 0)
36 #endif
37 #else
38 #ifdef BSD4_1
39 #include <wait.h>
40 #else
41 #include <sys/wait.h>
42 #endif /* not BSD 4.1 */
44 #define WAITTYPE union wait
45 #define WRETCODE(w) w.w_retcode
46 #undef WCOREDUMP /* Later BSDs define this name differently. */
47 #define WCOREDUMP(w) w.w_coredump
49 #if defined (HPUX) || defined (convex)
50 /* HPUX version 7 has broken definitions of these. */
51 /* pvogel@convex.com says the convex does too. */
52 #undef WTERMSIG
53 #undef WSTOPSIG
54 #undef WIFSTOPPED
55 #undef WIFSIGNALED
56 #undef WIFEXITED
57 #endif /* HPUX | convex */
59 #ifndef WTERMSIG
60 #define WTERMSIG(w) w.w_termsig
61 #endif
62 #ifndef WSTOPSIG
63 #define WSTOPSIG(w) w.w_stopsig
64 #endif
65 #ifndef WIFSTOPPED
66 #define WIFSTOPPED(w) (WTERMSIG (w) == 0177)
67 #endif
68 #ifndef WIFSIGNALED
69 #define WIFSIGNALED(w) (WTERMSIG (w) != 0177 && (WSTOPSIG (w)) == 0)
70 #endif
71 #ifndef WIFEXITED
72 #define WIFEXITED(w) (WTERMSIG (w) == 0)
73 #endif
74 #endif /* BSD or UNIPLUS or STRIDE */
75 #endif /* no WAITTYPE */
76 #else /* VMS */
77 #define WAITTYPE int
78 #define WIFSTOPPED(w) 0
79 #define WIFSIGNALED(w) 0
80 #define WIFEXITED(w) ((w) != -1)
81 #define WRETCODE(w) (w)
82 #define WSTOPSIG(w) (w)
83 #define WCOREDUMP(w) 0
84 #define WTERMSIG(w) (w)
85 #include <ssdef.h>
86 #include <iodef.h>
87 #include <clidef.h>
88 #include "vmsproc.h"
89 #endif /* VMS */