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/* posixwait.h -- job control definitions from POSIX 1003.1 */
/* Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Bash is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Bash. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined (_POSIXWAIT_H_)
# define _POSIXWAIT_H_
/* If _POSIX_VERSION is not defined, we assume that <sys/wait.h> defines
a `union wait' and various macros used to manipulate it. Look in
unionwait.h for the things we expect to find. */
#if defined (HAVE_SYS_WAIT_H)
# include <sys/wait.h>
#else /* !HAVE_SYS_WAIT_H */
# if !defined (_POSIX_VERSION)
# include "unionwait.h"
# endif
#endif /* !HAVE_SYS_WAIT_H */
/* How to get the status of a job. For Posix, this is just an
int, but for other systems we have to crack the union wait. */
#if !defined (_POSIX_VERSION)
typedef union wait WAIT;
# define WSTATUS(t) (t.w_status)
#else /* _POSIX_VERSION */
typedef int WAIT;
# define WSTATUS(t) (t)
#endif /* _POSIX_VERSION */
/* Make sure that parameters to wait3 are defined. */
#if !defined (WNOHANG)
# define WNOHANG 1
# define WUNTRACED 2
#endif /* WNOHANG */
/* More Posix P1003.1 definitions. In the POSIX versions, the parameter is
passed as an `int', in the non-POSIX version, as `union wait'. */
#if defined (_POSIX_VERSION)
# if !defined (WSTOPSIG)
# define WSTOPSIG(s) ((s) >> 8)
# endif /* !WSTOPSIG */
# if !defined (WTERMSIG)
# define WTERMSIG(s) ((s) & 0177)
# endif /* !WTERMSIG */
# if !defined (WEXITSTATUS)
# define WEXITSTATUS(s) ((s) >> 8)
# endif /* !WEXITSTATUS */
# if !defined (WIFSTOPPED)
# define WIFSTOPPED(s) (((s) & 0177) == 0177)
# endif /* !WIFSTOPPED */
# if !defined (WIFEXITED)
# define WIFEXITED(s) (((s) & 0377) == 0)
# endif /* !WIFEXITED */
# if !defined (WIFSIGNALED)
# define WIFSIGNALED(s) (!WIFSTOPPED(s) && !WIFEXITED(s))
# endif /* !WIFSIGNALED */
# if !defined (WIFCORED)
# define WIFCORED(s) ((s) & 0200)
# endif /* !WIFCORED */
#else /* !_POSIX_VERSION */
# if !defined (WSTOPSIG)
# define WSTOPSIG(s) ((s).w_stopsig)
# endif /* !WSTOPSIG */
# if !defined (WTERMSIG)
# define WTERMSIG(s) ((s).w_termsig)
# endif /* !WTERMSIG */
# if !defined (WEXITSTATUS)
# define WEXITSTATUS(s) ((s).w_retcode)
# endif /* !WEXITSTATUS */
# if !defined (WIFCORED)
# define WIFCORED(s) ((s).w_coredump)
# endif /* !WIFCORED */
#endif /* !_POSIX_VERSION */
#endif /* !_POSIXWAIT_H_ */
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