1995-02-18 09:27:10 +08:00
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/* Definitions of status bits for `wait' et al.
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2018-01-01 08:32:25 +08:00
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Copyright (C) 1992-2018 Free Software Foundation, Inc.
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1996-11-15 12:08:00 +08:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 12:58:11 +08:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1996-11-15 12:08:00 +08:00
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The GNU C Library 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 GNU
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2001-07-06 12:58:11 +08:00
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Lesser General Public License for more details.
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1996-11-15 12:08:00 +08:00
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2001-07-06 12:58:11 +08:00
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You should have received a copy of the GNU Lesser General Public
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2012-02-10 07:18:22 +08:00
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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1995-02-18 09:27:10 +08:00
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2000-02-24 16:04:43 +08:00
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#if !defined _SYS_WAIT_H && !defined _STDLIB_H
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1997-11-26 12:23:08 +08:00
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# error "Never include <bits/waitstatus.h> directly; use <sys/wait.h> instead."
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1997-06-21 10:59:26 +08:00
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#endif
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1995-02-18 09:27:10 +08:00
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/* Everything extant so far uses these same bits. */
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/* If WIFEXITED(STATUS), the low-order 8 bits of the status. */
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#define __WEXITSTATUS(status) (((status) & 0xff00) >> 8)
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/* If WIFSIGNALED(STATUS), the terminating signal. */
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#define __WTERMSIG(status) ((status) & 0x7f)
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/* If WIFSTOPPED(STATUS), the signal that stopped the child. */
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#define __WSTOPSIG(status) __WEXITSTATUS(status)
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/* Nonzero if STATUS indicates normal termination. */
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#define __WIFEXITED(status) (__WTERMSIG(status) == 0)
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/* Nonzero if STATUS indicates termination by a signal. */
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2004-09-28 09:42:49 +08:00
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#define __WIFSIGNALED(status) \
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2004-09-28 09:58:03 +08:00
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(((signed char) (((status) & 0x7f) + 1) >> 1) > 0)
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1995-02-18 09:27:10 +08:00
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/* Nonzero if STATUS indicates the child is stopped. */
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#define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
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2004-09-28 09:42:49 +08:00
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/* Nonzero if STATUS indicates the child continued after a stop. We only
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define this if <bits/waitflags.h> provides the WCONTINUED flag bit. */
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#ifdef WCONTINUED
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# define __WIFCONTINUED(status) ((status) == __W_CONTINUED)
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#endif
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1995-02-18 09:27:10 +08:00
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/* Nonzero if STATUS indicates the child dumped core. */
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#define __WCOREDUMP(status) ((status) & __WCOREFLAG)
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/* Macros for constructing status values. */
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#define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
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#define __W_STOPCODE(sig) ((sig) << 8 | 0x7f)
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2004-09-28 09:42:49 +08:00
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#define __W_CONTINUED 0xffff
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1995-02-18 09:27:10 +08:00
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#define __WCOREFLAG 0x80
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