tc.wait.h revision 316957
1/* $Header: /p/tcsh/cvsroot/tcsh/tc.wait.h,v 3.15 2011/02/04 18:00:26 christos Exp $ */ 2/* 3 * tc.wait.h: <sys/wait.h> for machines that don't have it or have it and 4 * is incorrect. 5 */ 6/*- 7 * Copyright (c) 1980, 1991 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34#ifndef _h_tc_wait 35#define _h_tc_wait 36 37/* 38 * a little complicated #include <sys/wait.h>! :-( 39 * We try to use the system's wait.h when we can... 40 */ 41 42#if SYSVREL > 0 && !defined(__linux__) && !defined(__GNU__) && !defined(__GLIBC__) 43# ifdef hpux 44# ifndef __hpux 45# define NEEDwait 46# else 47# ifndef POSIX 48# define _BSD 49# endif 50# ifndef _CLASSIC_POSIX_TYPES 51# define _CLASSIC_POSIX_TYPES 52# endif 53# include <sys/wait.h> /* 7.0 fixed it again */ 54# endif /* __hpux */ 55# else /* hpux */ 56# if (defined(OREO) || defined(IRIS4D) || defined(POSIX)) && !defined(_VMS_POSIX) 57# include <sys/wait.h> 58# else /* OREO || IRIS4D || POSIX */ 59# define NEEDwait 60# endif /* OREO || IRIS4D || POSIX */ 61# endif /* hpux */ 62#else /* SYSVREL == 0 || glibc */ 63# ifdef _MINIX 64# undef NEEDwait 65# include "mi.wait.h" 66# else 67# ifndef WINNT_NATIVE 68# include <sys/wait.h> 69# endif /* WINNT_NATIVE */ 70# endif /* _MINIX */ 71#endif /* SYSVREL == 0 || glibc */ 72 73#ifdef NEEDwait 74/* 75 * This wait is for big-endians and little endians 76 */ 77union wait { 78 int w_status; 79# ifdef _SEQUENT_ 80 struct { 81 unsigned short w_Termsig:7; 82 unsigned short w_Coredump:1; 83 unsigned short w_Retcode:8; 84 } w_T; 85 struct { 86 unsigned short w_Stopval:8; 87 unsigned short w_Stopsig:8; 88 } w_S; 89}; 90 91# define w_termsig w_T.w_Termsig 92# define w_coredump w_T.w_Coredump 93# define w_retcode w_T.w_Retcode 94# define w_stopval w_S.w_Stopval 95# define w_stopsig w_S.w_Stopsig 96# else /* _SEQUENT_ */ 97# if defined(vax) || defined(__vax__) || defined(i386) || defined(_I386) || defined(__i386__) 98 union { 99 struct { 100 unsigned int w_Termsig:7; 101 unsigned int w_Coredump:1; 102 unsigned int w_Retcode:8; 103 unsigned int w_Dummy:16; 104 } w_T; 105 struct { 106 unsigned int w_Stopval:8; 107 unsigned int w_Stopsig:8; 108 unsigned int w_Dummy:16; 109 } w_S; 110 } w_P; 111# else /* mc68000 || sparc || ??? */ 112# if defined(_CRAY) || defined(ANY_OTHER_64BIT_MACHINE) 113# define DUMMY_BITS 48 114# else /* _CRAY */ 115# define DUMMY_BITS 16 116# endif /* _CRAY */ 117 union { 118 struct { 119 unsigned int w_Dummy:DUMMY_BITS; 120 unsigned int w_Retcode:8; 121 unsigned int w_Coredump:1; 122 unsigned int w_Termsig:7; 123 } w_T; 124 struct { 125 unsigned int w_Dummy:DUMMY_BITS; 126 unsigned int w_Stopsig:8; 127 unsigned int w_Stopval:8; 128 } w_S; 129 } w_P; 130# endif /* vax || __vax__ || i386 || _I386 || __i386__ */ 131}; 132 133# define w_termsig w_P.w_T.w_Termsig 134# define w_coredump w_P.w_T.w_Coredump 135# define w_retcode w_P.w_T.w_Retcode 136# define w_stopval w_P.w_S.w_Stopval 137# define w_stopsig w_P.w_S.w_Stopsig 138# endif /* _SEQUENT_ */ 139 140 141# ifndef WNOHANG 142# define WNOHANG 1 /* dont hang in wait */ 143# endif 144 145# ifndef WUNTRACED 146# define WUNTRACED 2 /* tell about stopped, untraced children */ 147# endif 148 149# define WSTOPPED 0177 150# define WIFSTOPPED(x) ((x).w_stopval == WSTOPPED) 151# define WIFSIGNALED(x) (((x).w_stopval != WSTOPPED) && ((x).w_termsig != 0)) 152 153#endif /* NEEDwait */ 154 155#endif /* _h_tc_wait */ 156