xnu-3247.1.106.tar.gz

[apple/xnu.git] / osfmk / kern / host.h

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 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
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 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
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 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
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/*
 * @OSF_COPYRIGHT@
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

/*
 *	kern/host.h
 *
 *	Definitions for host data structures.
 *
 */

#ifndef	_KERN_HOST_H_
#define _KERN_HOST_H_

#include <mach/mach_types.h>
#include <sys/cdefs.h>

#ifdef	MACH_KERNEL_PRIVATE

#include <kern/locks.h>
#include <kern/exception.h>
#include <mach/exception_types.h>
#include <mach/host_special_ports.h>
#include <kern/kern_types.h>
#include <mach/vm_statistics.h>

struct	host {
	decl_lck_mtx_data(,lock)		/* lock to protect exceptions */
	ipc_port_t special[HOST_MAX_SPECIAL_PORT + 1];
	struct exception_action exc_actions[EXC_TYPES_COUNT];
};

typedef struct host	host_data_t;

extern host_data_t	realhost;

#define host_lock(host)		lck_mtx_lock(&(host)->lock)
#define host_unlock(host)	lck_mtx_unlock(&(host)->lock)

extern vm_extmod_statistics_data_t host_extmod_statistics;

typedef struct {
	uint64_t total_user_time;
	uint64_t total_system_time;
	uint64_t task_interrupt_wakeups;
	uint64_t task_platform_idle_wakeups;
	uint64_t task_timer_wakeups_bin_1;
	uint64_t task_timer_wakeups_bin_2;
} expired_task_statistics_t;

extern expired_task_statistics_t dead_task_statistics;

#endif	/* MACH_KERNEL_PRIVATE */

/*
 * Access routines for inside the kernel.
 */

__BEGIN_DECLS

extern host_t			host_self(void);
extern host_priv_t		host_priv_self(void);
extern host_security_t	host_security_self(void);

__END_DECLS

#endif	/* _KERN_HOST_H_ */