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/* $NetBSD: wait.h,v 1.7 1994/06/29 06:46:23 cgd Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)wait.h 8.1 (Berkeley) 6/2/93
*/
/*
* This file holds definitions relevent to the wait4 system call
* and the alternate interfaces that use it (wait, wait3, waitpid).
*/
/*
* Macros to test the exit status returned by wait and extract the
* relevant values. Union wait is no supported with pthreads.
*/
#define __W_INT(i) (i)
#define __WSTATUS(x) (__W_INT(x) & 0177)
#define __WSTOPPED 0177 /* __WSTATUS if process is stopped */
#define WIFSTOPPED(x) (__WSTATUS(x) == __WSTOPPED)
#define WSTOPSIG(x) (__W_INT(x) >> 8)
#define WIFSIGNALED(x) (__WSTATUS(x) != __WSTOPPED && __WSTATUS(x) != 0)
#define WTERMSIG(x) (__WSTATUS(x))
#define WIFEXITED(x) (__WSTATUS(x) == 0)
#define WEXITSTATUS(x) (__W_INT(x) >> 8)
#ifndef _POSIX_SOURCE
#define WCOREDUMP(x) (__W_INT(x) & WCOREFLAG)
#define W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
#define W_STOPCODE(sig) ((sig) << 8 | __WSTOPPED)
#endif
/*
* Option bits for the third argument of wait4. WNOHANG causes the
* wait to not hang if there are no stopped or terminated processes, rather
* returning an error indication in this case (pid==0). WUNTRACED
* indicates that the caller should receive status about untraced children
* which stop due to signals. If children are stopped and a wait without
* this option is done, it is as though they were still running... nothing
* about them is returned.
*/
#define WNOHANG 1 /* dont hang in wait */
#define WUNTRACED 2 /* tell about stopped, untraced children */
#ifndef _POSIX_SOURCE
/* Tokens for special values of the "pid" parameter to wait4. */
#define WAIT_ANY (-1) /* any process */
#define WAIT_MYPGRP 0 /* any process in my process group */
#define WSTOPPED __WSTOPPED
#endif /* _POSIX_SOURCE */
#include <sys/types.h>
#include <sys/cdefs.h>
#ifndef __WAIT_STATUS
#define __WAIT_STATUS int *
#endif
__BEGIN_DECLS
pid_t wait __P_((int *));
pid_t waitpid __P_((pid_t, int *, int));
#ifndef _POSIX_SOURCE
pid_t wait3 __P_((int *, int, void *));
pid_t wait4 __P_((pid_t, int *, int, void *));
#endif
__END_DECLS
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