xnu-7195.101.1.tar.gz

[apple/xnu.git] / bsd / sys / kernel.h

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/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*-
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * 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.
 *
 *	@(#)kernel.h	8.3 (Berkeley) 1/21/94
 */
#ifndef _SYS_KERNEL_H_
#define _SYS_KERNEL_H_

#include <sys/appleapiopts.h>

#ifdef  KERNEL

#include <sys/param.h>

#ifdef BSD_KERNEL_PRIVATE
#include <stdbool.h>
#include <kern/locks.h>

/* Global variables for the kernel. */

/* 1.1 */
extern long hostid;
extern char hostname[MAXHOSTNAMELEN];
extern lck_mtx_t hostname_lock;
extern char domainname[MAXHOSTNAMELEN];
extern lck_mtx_t domainname_lock;

/* 1.2 */
extern int stathz;              /* statistics clock's frequency */
extern int profhz;              /* profiling clock's frequency */

extern bool send_sigsys;
#endif /* BSD_KERNEL_PRIVATE */


#ifdef KERNEL_PRIVATE
extern struct timezone tz;                      /* XXX */

extern int tick;                /* usec per tick (1000000 / hz) */
extern int hz;                  /* system clock's frequency */

#endif /* KERNEL_PRIVATE */

#endif  /* KERNEL */

#endif  /* !_SYS_KERNEL_H_ */