bin/make/wait.h

   1 /* NAME:
   2  *      wait.h - compensate for what vendors leave out
   3  *
   4  * AUTHOR:
   5  *      Simon J. Gerraty <sjg@crufty.net>
   6  */
   7 /*
   8  * RCSid:
   9  *      $Id: wait.h,v 1.6 2002/11/26 07:53:06 sjg Exp $
  10  *
  11  *      @(#)Copyright (c) 1994, Simon J. Gerraty.
  12  *
  13  *      This is free software.  It comes with NO WARRANTY.
  14  *      Permission to use, modify and distribute this source code
  15  *      is granted subject to the following conditions.
  16  *      1/ that the above copyright notice and this notice
  17  *      are preserved in all copies and that due credit be given
  18  *      to the author.
  19  *      2/ that any changes to this code are clearly commented
  20  *      as such so that the author does not get blamed for bugs
  21  *      other than his own.
  22  *
  23  *      Please send copies of changes and bug-fixes to:
  24  *      sjg@crufty.net
  25  */
  26
  27 #include <sys/wait.h>
  28
  29 #ifdef sun386
  30 # define UNION_WAIT
  31 # define WEXITSTATUS(x) ((&x)->w_retcode)
  32 # define WTERMSIG(x) ((&x)->w_termsig)
  33 # define WSTOPSIG(x) ((&x)->w_stopsig)
  34 # define HAVE_WAIT4
  35 #endif
  36
  37 #ifndef WAIT_T
  38 # ifdef UNION_WAIT
  39 #   define WAIT_T union wait
  40 #   define WAIT_STATUS(x) (x).w_status
  41 # else
  42 #   define WAIT_T int
  43 #   define WAIT_STATUS(x) x
  44 # endif
  45 #endif
  46
  47 #ifndef WEXITSTATUS
  48 # define WEXITSTATUS(_X)       (((int)(_X)>>8)&0377)
  49 #endif
  50 #ifndef WSTOPPED
  51 # define WSTOPPED 0177
  52 #endif
  53 #ifndef WSTOPSIG
  54 # define WSTOPSIG(x) WSTOPPED
  55 #endif
  56
  57 #ifdef UNION_WAIT
  58 #ifndef WSET_STOPCODE
  59 #define WSET_STOPCODE(x, sig) ((&x)->w_stopsig = (sig))
  60 #endif
  61 #ifndef WSET_EXITCODE
  62 #define WSET_EXITCODE(x, ret, sig) ((&x)->w_termsig = (sig), (&x)->w_retcode = (ret))
  63 #endif
  64 #else
  65 #ifndef WSET_STOPCODE
  66 #define WSET_STOPCODE(x, sig) ((x) = ((sig) << 8) | 0177)
  67 #endif
  68 #ifndef WSET_EXITCODE
  69 #define WSET_EXITCODE(x, ret, sig) ((x) = (ret << 8) | (sig))
  70 #endif
  71 #endif
  72
  73 #ifndef HAVE_WAITPID
  74 # ifdef HAVE_WAIT4
  75 #   define waitpid(pid, statusp, flags)  wait4(pid, statusp, flags, (char *)0)
  76 # else
  77 #   ifdef HAVE_WAIT3
  78 #     define waitpid(pid, statusp, flags) wait3(statusp, flags, (char *)0)
  79 #   endif
  80 # endif
  81 #endif