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