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/*
* Mach Operating System
* Copyright (c) 1993-1987 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.
*/
/*
* File: mach/vm_statistics.h
* Author: Avadis Tevanian, Jr., Michael Wayne Young, David Golub
*
* Virtual memory statistics structure.
*
*/
#ifndef _MACH_VM_STATISTICS_H_
#define _MACH_VM_STATISTICS_H_
#include <mach/machine/vm_types.h>
struct vm_statistics {
integer_t pagesize; /* page size in bytes */
integer_t free_count; /* # of pages free */
integer_t active_count; /* # of pages active */
integer_t inactive_count; /* # of pages inactive */
integer_t wire_count; /* # of pages wired down */
integer_t zero_fill_count; /* # of zero fill pages */
integer_t reactivations; /* # of pages reactivated */
integer_t pageins; /* # of pageins */
integer_t pageouts; /* # of pageouts */
integer_t faults; /* # of faults */
integer_t cow_faults; /* # of copy-on-writes */
integer_t lookups; /* object cache lookups */
integer_t hits; /* object cache hits */
};
typedef struct vm_statistics *vm_statistics_t;
typedef struct vm_statistics vm_statistics_data_t;
#ifdef MACH_KERNEL
extern vm_statistics_data_t vm_stat;
#endif /* MACH_KERNEL */
/*
* Each machine dependent implementation is expected to
* keep certain statistics. They may do this anyway they
* so choose, but are expected to return the statistics
* in the following structure.
*/
struct pmap_statistics {
integer_t resident_count; /* # of pages mapped (total)*/
integer_t wired_count; /* # of pages wired */
};
typedef struct pmap_statistics *pmap_statistics_t;
#endif /* _MACH_VM_STATISTICS_H_ */
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