1/* Define wait system call interface for Emacs. 2 Copyright (C) 1993, 1994, 1995, 2000, 2001, 2002, 2003, 2004, 3 2005, 2006, 2007 Free Software Foundation, Inc. 4 5This file is part of GNU Emacs. 6 7GNU Emacs is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU Emacs is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU Emacs; see the file COPYING. If not, write to 19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20Boston, 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 (UNIPLUS) && !defined (STRIDE) && !(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 || UNIPLUS || STRIDE || 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) */ 159