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106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/* Define wait system call interface for Emacs.
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Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Define the structure that the wait system call stores.
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On many systems, there is a structure defined for this.
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But on vanilla-ish USG systems there is not. */
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#ifndef VMS
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#ifndef WAITTYPE
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#ifdef WAIT_USE_INT
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/* Some systems have union wait in their header, but we should use
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int regardless of that. */
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#include <sys/wait.h>
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#define WAITTYPE int
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#define WRETCODE(w) WEXITSTATUS (w)
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#else /* not WAIT_USE_INT */
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#if (!defined (BSD) && !defined (UNIPLUS) && !defined (STRIDE) && !(defined (HPUX) && !defined (NOMULTIPLEJOBS)) && !defined (HAVE_WAIT_HEADER)) || defined (LINUX)
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#define WAITTYPE int
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#define WIFSTOPPED(w) ((w&0377) == 0177)
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#define WIFSIGNALED(w) ((w&0377) != 0177 && (w&~0377) == 0)
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#define WIFEXITED(w) ((w&0377) == 0)
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#define WRETCODE(w) (w >> 8)
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#define WSTOPSIG(w) (w >> 8)
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#define WTERMSIG(w) (w & 0377)
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#ifndef WCOREDUMP
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#define WCOREDUMP(w) ((w&0200) != 0)
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#endif
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#else
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#ifdef BSD4_1
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#include <wait.h>
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#else
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#include <sys/wait.h>
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#endif /* not BSD 4.1 */
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#define WAITTYPE union wait
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#define WRETCODE(w) w.w_retcode
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#undef WCOREDUMP /* Later BSDs define this name differently. */
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#define WCOREDUMP(w) w.w_coredump
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#if defined (HPUX) || defined (convex)
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/* HPUX version 7 has broken definitions of these. */
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/* pvogel@convex.com says the convex does too. */
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#undef WTERMSIG
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#undef WSTOPSIG
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#undef WIFSTOPPED
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#undef WIFSIGNALED
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#undef WIFEXITED
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#endif /* HPUX | convex */
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#ifndef WTERMSIG
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#define WTERMSIG(w) w.w_termsig
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#endif
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#ifndef WSTOPSIG
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#define WSTOPSIG(w) w.w_stopsig
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#endif
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#ifndef WIFSTOPPED
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#define WIFSTOPPED(w) (WTERMSIG (w) == 0177)
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#endif
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#ifndef WIFSIGNALED
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#define WIFSIGNALED(w) (WTERMSIG (w) != 0177 && (WSTOPSIG (w)) == 0)
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#endif
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#ifndef WIFEXITED
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#define WIFEXITED(w) (WTERMSIG (w) == 0)
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#endif
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#endif /* BSD or UNIPLUS or STRIDE */
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#endif /* not WAIT_USE_INT */
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#endif /* no WAITTYPE */
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#else /* VMS */
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#define WAITTYPE int
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#define WIFSTOPPED(w) 0
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#define WIFSIGNALED(w) 0
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#define WIFEXITED(w) ((w) != -1)
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#define WRETCODE(w) (w)
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#define WSTOPSIG(w) (w)
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#define WCOREDUMP(w) 0
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#define WTERMSIG(w) (w)
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#include <ssdef.h>
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#include <iodef.h>
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#include <clidef.h>
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#include "vmsproc.h"
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#endif /* VMS */
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