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/*
* Mach Operating System
* Copyright (c) 1987 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
* File: mach/vm_statistics.h
* Author: Avadis Tevanian, Jr., Michael Wayne Young, David Golub
*
* Copyright (C) 1986, Avadis Tevanian, Jr., Michael Wayne Young,
* David Golub
*
* Virtual memory statistics structure.
*
************************************************************************
* HISTORY
* 30-Sep-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Changed "reclaim" to "inactive."
*
* 22-Aug-86 Michael Young (mwyoung) at Carnegie-Mellon University
* Made vm_stat structure kernel-only.
*
* 22-May-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Defined vm_statistics_data_t as a real typedef so that
* MatchMaker can deal with it.
*
* 14-Feb-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Created.
*
************************************************************************
*/
#ifndef _MACH_VM_STATISTICS_H_
#define _MACH_VM_STATISTICS_H_
struct vm_statistics {
long pagesize; /* page size in bytes */
long free_count; /* # of pages free */
long active_count; /* # of pages active */
long inactive_count; /* # of pages inactive */
long wire_count; /* # of pages wired down */
long zero_fill_count; /* # of zero fill pages */
long reactivations; /* # of pages reactivated */
long pageins; /* # of pageins */
long pageouts; /* # of pageouts */
long faults; /* # of faults */
long cow_faults; /* # of copy-on-writes */
long lookups; /* object cache lookups */
long hits; /* object cache hits */
};
typedef struct vm_statistics *vm_statistics_t;
typedef struct vm_statistics vm_statistics_data_t;
#ifdef KERNEL
extern vm_statistics_data_t vm_stat;
#endif
/*
* 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 {
long resident_count; /* # of pages mapped (total)*/
long wired_count; /* # of pages wired */
};
typedef struct pmap_statistics *pmap_statistics_t;
#endif
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