include/posixwait.h

   1 /* posixwait.h -- job control definitions from POSIX 1003.1 */
   2
   3 /* Copyright (C) 1997 Free Software Foundation, Inc.
   4
   5    This file is part of GNU Bash, the Bourne Again SHell.
   6
   7    Bash is free software; you can redistribute it and/or modify it under
   8    the terms of the GNU General Public License as published by the Free
   9    Software Foundation; either version 2, or (at your option) any later
  10    version.
  11
  12    Bash is distributed in the hope that it will be useful, but WITHOUT ANY
  13    WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15    for more details.
  16
  17    You should have received a copy of the GNU General Public License along
  18    with Bash; see the file COPYING.  If not, write to the Free Software
  19    Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
  20
  21 #if !defined (_POSIXWAIT_H_)
  22 #  define _POSIXWAIT_H_
  23
  24 /* If _POSIX_VERSION is not defined, we assume that <sys/wait.h> defines
  25    a `union wait' and various macros used to manipulate it.  Look in
  26    unionwait.h for the things we expect to find. */
  27 #if defined (HAVE_SYS_WAIT_H)
  28 #  include <sys/wait.h>
  29 #else /* !HAVE_SYS_WAIT_H */
  30 #  if !defined (_POSIX_VERSION)
  31 #    include "unionwait.h"
  32 #  endif
  33 #endif  /* !HAVE_SYS_WAIT_H */
  34
  35 /* How to get the status of a job.  For Posix, this is just an
  36    int, but for other systems we have to crack the union wait. */
  37 #if !defined (_POSIX_VERSION)
  38 typedef union wait WAIT;
  39 #  define WSTATUS(t)  (t.w_status)
  40 #else /* _POSIX_VERSION */
  41 typedef int WAIT;
  42 #  define WSTATUS(t)  (t)
  43 #endif /* _POSIX_VERSION */
  44
  45 /* Make sure that parameters to wait3 are defined. */
  46 #if !defined (WNOHANG)
  47 #  define WNOHANG 1
  48 #  define WUNTRACED 2
  49 #endif /* WNOHANG */
  50
  51 /* More Posix P1003.1 definitions.  In the POSIX versions, the parameter is
  52    passed as an `int', in the non-POSIX version, as `union wait'. */
  53 #if defined (_POSIX_VERSION)
  54
  55 #  if !defined (WSTOPSIG)
  56 #    define WSTOPSIG(s)       ((s) >> 8)
  57 #  endif /* !WSTOPSIG */
  58
  59 #  if !defined (WTERMSIG)
  60 #    define WTERMSIG(s)       ((s) & 0177)
  61 #  endif /* !WTERMSIG */
  62
  63 #  if !defined (WEXITSTATUS)
  64 #    define WEXITSTATUS(s)    ((s) >> 8)
  65 #  endif /* !WEXITSTATUS */
  66
  67 #  if !defined (WIFSTOPPED)
  68 #    define WIFSTOPPED(s)     (((s) & 0177) == 0177)
  69 #  endif /* !WIFSTOPPED */
  70
  71 #  if !defined (WIFEXITED)
  72 #    define WIFEXITED(s)      (((s) & 0377) == 0)
  73 #  endif /* !WIFEXITED */
  74
  75 #  if !defined (WIFSIGNALED)
  76 #    define WIFSIGNALED(s)    (!WIFSTOPPED(s) && !WIFEXITED(s))
  77 #  endif /* !WIFSIGNALED */
  78
  79 #  if !defined (WIFCORED)
  80 #    define WIFCORED(s)       ((s) & 0200)
  81 #  endif /* !WIFCORED */
  82
  83 #else /* !_POSIX_VERSION */
  84
  85 #  if !defined (WSTOPSIG)
  86 #    define WSTOPSIG(s)       ((s).w_stopsig)
  87 #  endif /* !WSTOPSIG */
  88
  89 #  if !defined (WTERMSIG)
  90 #    define WTERMSIG(s)       ((s).w_termsig)
  91 #  endif /* !WTERMSIG */
  92
  93 #  if !defined (WEXITSTATUS)
  94 #    define WEXITSTATUS(s)    ((s).w_retcode)
  95 #  endif /* !WEXITSTATUS */
  96
  97 #  if !defined (WIFCORED)
  98 #    define WIFCORED(s)       ((s).w_coredump)
  99 #  endif /* !WIFCORED */
 100
 101 #endif /* !_POSIX_VERSION */
 102
 103 #endif /* !_POSIXWAIT_H_ */