contrib/tcsh-6/tc.wait.h

   1 /* $Header: /p/tcsh/cvsroot/tcsh/tc.wait.h,v 3.14 2004/12/25 21:15:08 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  */
  77 union 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 */