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/* Define wait system call interface for Emacs. Copyright (C) 1993 Free Software Foundation, Inc. Copyright (C) 1995 Sun Microsystems. This file is part of XEmacs. XEmacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* Synched up with: FSF 19.28. */ /* Cleaned up by Ben Wing. */ /* Define the structure that the wait system call stores. On many systems, there is a structure defined for this. But on vanilla-ish USG systems there is not. NOTE: POSIX specifies that int, rather than union wait, be used. BSD systems based on BSD 4.3+ or newer generally have int, but those based on BSD 4.3 or older have union wait. */ #ifndef VMS # ifdef HAVE_SYS_WAIT_H # include <sys/wait.h> # endif # if !defined (HAVE_UNION_WAIT) /* the POSIX / SYSV way */ # define WAITTYPE int # ifndef WIFSTOPPED # define WIFSTOPPED(w) (((w) & 0377) == 0177) # endif # ifndef WIFSIGNALED # define WIFSIGNALED(w) (((w) & 0377) != 0177 && ((w) & ~0377) == 0) # endif # ifndef WIFEXITED # define WIFEXITED(w) (((w) & 0377) == 0) # endif # ifndef WRETCODE # ifdef WEXITSTATUS # define WRETCODE(w) WEXITSTATUS (w) # else # define WRETCODE(w) ((w) >> 8) # endif # endif # ifndef WSTOPSIG # define WSTOPSIG(w) ((w) >> 8) # endif # ifndef WTERMSIG # define WTERMSIG(w) ((w) & 0377) # endif # ifndef WCOREDUMP # define WCOREDUMP(w) (((w) & 0200) != 0) # endif # else /* the older BSD way */ # define WAITTYPE union wait # ifndef WRETCODE # ifdef WEXITSTATUS # define WRETCODE(w) WEXITSTATUS(w) # else # define WRETCODE(w) w.w_retcode # endif # endif # undef WCOREDUMP /* Later BSDs define this name differently. */ # define WCOREDUMP(w) w.w_coredump # if defined (HPUX) || defined (convex) /* HPUX version 7 has broken definitions of these. */ /* pvogel@convex.com says the convex does too. */ # undef WTERMSIG # undef WSTOPSIG # undef WIFSTOPPED # undef WIFSIGNALED # undef WIFEXITED # endif /* HPUX | convex */ # ifndef WTERMSIG # define WTERMSIG(w) w.w_termsig # endif # ifndef WSTOPSIG # define WSTOPSIG(w) w.w_stopsig # endif # ifndef WIFSTOPPED # define WIFSTOPPED(w) (WTERMSIG (w) == 0177) # endif # ifndef WIFSIGNALED # define WIFSIGNALED(w) (WTERMSIG (w) != 0177 && (WSTOPSIG (w)) == 0) # endif # ifndef WIFEXITED # define WIFEXITED(w) (WTERMSIG (w) == 0) # endif # endif /* HAVE_UNION_WAIT */ #else /* VMS */ # define WAITTYPE int # define WIFSTOPPED(w) 0 # define WIFSIGNALED(w) 0 # define WIFEXITED(w) ((w) != -1) # define WRETCODE(w) (w) # define WSTOPSIG(w) (w) # define WCOREDUMP(w) 0 # define WTERMSIG(w) (w) # include <ssdef.h> # include <iodef.h> # include <clidef.h> # include "vmsproc.h" #endif /* VMS */
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