1995-02-18 09:27:10 +08:00
|
|
|
/* Definitions of status bits for `wait' et al.
|
2019-01-01 08:11:28 +08:00
|
|
|
Copyright (C) 1992-2019 Free Software Foundation, Inc.
|
1996-11-15 12:08:00 +08:00
|
|
|
This file is part of the GNU C Library.
|
|
|
|
|
|
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
2001-07-06 12:58:11 +08:00
|
|
|
modify it under the terms of the GNU Lesser General Public
|
|
|
|
|
License as published by the Free Software Foundation; either
|
|
|
|
|
version 2.1 of the License, or (at your option) any later version.
|
1996-11-15 12:08:00 +08:00
|
|
|
|
|
|
|
|
The GNU C Library 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
|
2001-07-06 12:58:11 +08:00
|
|
|
Lesser General Public License for more details.
|
1996-11-15 12:08:00 +08:00
|
|
|
|
2001-07-06 12:58:11 +08:00
|
|
|
You should have received a copy of the GNU Lesser General Public
|
2012-02-10 07:18:22 +08:00
|
|
|
License along with the GNU C Library; if not, see
|
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
1995-02-18 09:27:10 +08:00
|
|
|
|
2000-02-24 16:04:43 +08:00
|
|
|
#if !defined _SYS_WAIT_H && !defined _STDLIB_H
|
1997-11-26 12:23:08 +08:00
|
|
|
# error "Never include <bits/waitstatus.h> directly; use <sys/wait.h> instead."
|
1997-06-21 10:59:26 +08:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
1995-02-18 09:27:10 +08:00
|
|
|
/* Everything extant so far uses these same bits. */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* If WIFEXITED(STATUS), the low-order 8 bits of the status. */
|
|
|
|
|
#define __WEXITSTATUS(status) (((status) & 0xff00) >> 8)
|
|
|
|
|
|
|
|
|
|
/* If WIFSIGNALED(STATUS), the terminating signal. */
|
|
|
|
|
#define __WTERMSIG(status) ((status) & 0x7f)
|
|
|
|
|
|
|
|
|
|
/* If WIFSTOPPED(STATUS), the signal that stopped the child. */
|
|
|
|
|
#define __WSTOPSIG(status) __WEXITSTATUS(status)
|
|
|
|
|
|
|
|
|
|
/* Nonzero if STATUS indicates normal termination. */
|
|
|
|
|
#define __WIFEXITED(status) (__WTERMSIG(status) == 0)
|
|
|
|
|
|
|
|
|
|
/* Nonzero if STATUS indicates termination by a signal. */
|
2004-09-28 09:42:49 +08:00
|
|
|
#define __WIFSIGNALED(status) \
|
2004-09-28 09:58:03 +08:00
|
|
|
(((signed char) (((status) & 0x7f) + 1) >> 1) > 0)
|
1995-02-18 09:27:10 +08:00
|
|
|
|
|
|
|
|
/* Nonzero if STATUS indicates the child is stopped. */
|
|
|
|
|
#define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
|
|
|
|
|
|
2004-09-28 09:42:49 +08:00
|
|
|
/* Nonzero if STATUS indicates the child continued after a stop. We only
|
|
|
|
|
define this if <bits/waitflags.h> provides the WCONTINUED flag bit. */
|
|
|
|
|
#ifdef WCONTINUED
|
|
|
|
|
# define __WIFCONTINUED(status) ((status) == __W_CONTINUED)
|
|
|
|
|
#endif
|
|
|
|
|
|
1995-02-18 09:27:10 +08:00
|
|
|
/* Nonzero if STATUS indicates the child dumped core. */
|
|
|
|
|
#define __WCOREDUMP(status) ((status) & __WCOREFLAG)
|
|
|
|
|
|
|
|
|
|
/* Macros for constructing status values. */
|
|
|
|
|
#define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
|
|
|
|
|
#define __W_STOPCODE(sig) ((sig) << 8 | 0x7f)
|
2004-09-28 09:42:49 +08:00
|
|
|
#define __W_CONTINUED 0xffff
|
1995-02-18 09:27:10 +08:00
|
|
|
#define __WCOREFLAG 0x80
|
