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diff --git a/mit-pthreads/machdep/hpux-10.20/wait.h b/mit-pthreads/machdep/hpux-10.20/wait.h
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+/*
+ * 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.
+ *
+ *	from: @(#)wait.h	8.1 (Berkeley) 6/2/93
+ *	$Id$
+ */
+
+#ifndef _SYS_WAIT_H_
+#define _SYS_WAIT_H_
+
+/*
+ * Macros to test the exit status returned by wait
+ * and extract the relevant values.
+ */
+#define	_W_INT(i)	(i)
+#define	WCOREFLAG	0200
+
+#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
+
+#define WNOHANG		1	/* dont hang in wait */
+#define WUNTRACED	2	/* tell about stopped, untraced children */
+
+#ifndef _POSIX_SOURCE
+/* POSIX extensions and 4.2/4.3 compatability: */
+
+/*
+ * 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>
+
+__BEGIN_DECLS
+struct rusage;	/* forward declaration */
+
+pid_t	wait __P_((int *));
+pid_t	waitpid __P_((pid_t, int *, int));
+
+#ifndef _POSIX_SOURCE
+pid_t	wait3 __P_((int *, int, void *));
+#endif
+
+__END_DECLS
+
+#endif