f6aac1c3b5
Moving include/sys NetBSD headers to /sys/sys Moving include/arch/*/ NetBSD headers to /sys/arch/*/include Change-Id: Ia1a45d4e83ab806c84093ec2b61bdbea9bed65a0
98 lines
3.8 KiB
C
98 lines
3.8 KiB
C
/* $NetBSD: wait.h,v 1.26 2009/01/11 02:45:56 christos Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)wait.h 8.2 (Berkeley) 7/10/94
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*/
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#ifndef _SYS_WAIT_H_
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#define _SYS_WAIT_H_
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <sys/featuretest.h>
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/* The <sys/wait.h> header contains macros related to wait(). The value
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* returned by wait() and waitpid() depends on whether the process
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* terminated by an exit() call, was killed by a signal, or was stopped
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* due to job control, as follows:
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*
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* High byte Low byte
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* +---------------------+
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* exit(status) | status | 0 |
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* +---------------------+
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* killed by signal | 0 | signal |
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* +---------------------+
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* stopped (job control) | signal | 0177 |
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* +---------------------+
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*/
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/*
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* Macros to test the exit status returned by wait
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* and extract the relevant values.
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*/
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#define _LOW(v) ( (v) & 0377)
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#define _HIGH(v) ( ((v) >> 8) & 0377)
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#define WIFEXITED(s) (_LOW(s) == 0) /* normal exit */
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#define WEXITSTATUS(s) (_HIGH(s)) /* exit status */
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#define WTERMSIG(s) (_LOW(s) & 0177) /* sig value */
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#define WIFSIGNALED(s) ((((unsigned int)(s)-1) & 0xFFFFU) < 0xFFU) /* signaled */
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#define WIFSTOPPED(s) (_LOW(s) == 0177) /* stopped */
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#define WSTOPSIG(s) (_HIGH(s) & 0377) /* stop signal */
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/*
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* Option bits for the third argument of waitpid. WNOHANG causes the
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* wait to not hang if there are no stopped or terminated processes, rather
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* returning an error indication in this case (pid==0). WUNTRACED
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* indicates that the caller should receive status about untraced children
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* which stop due to signals. If children are stopped and a wait without
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* this option is done, it is as though they were still running... nothing
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* about them is returned.
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*/
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#define WNOHANG 0x00000001 /* don't hang in wait */
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#define WUNTRACED 0x00000002 /* tell about stopped,
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untraced children */
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/* POSIX extensions and 4.2/4.3 compatibility: */
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/*
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* Tokens for special values of the "pid" parameter to waitpid.
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*/
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#define WAIT_ANY (-1) /* any process */
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#define WAIT_MYPGRP 0 /* any process in my process group */
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__BEGIN_DECLS
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pid_t wait(int *);
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pid_t waitpid(pid_t, int *, int);
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__END_DECLS
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#endif /* !_SYS_WAIT_H_ */
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