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Annotation of OSKit-Mach/include/mach/vm_statistics.h, revision 1.1.1.1

1.1       root        1: /* 
                      2:  * Mach Operating System
                      3:  * Copyright (c) 1993-1987 Carnegie Mellon University
                      4:  * All Rights Reserved.
                      5:  * 
                      6:  * Permission to use, copy, modify and distribute this software and its
                      7:  * documentation is hereby granted, provided that both the copyright
                      8:  * notice and this permission notice appear in all copies of the
                      9:  * software, derivative works or modified versions, and any portions
                     10:  * thereof, and that both notices appear in supporting documentation.
                     11:  * 
                     12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
                     14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     15:  * 
                     16:  * Carnegie Mellon requests users of this software to return to
                     17:  * 
                     18:  *  Software Distribution Coordinator  or  [email protected]
                     19:  *  School of Computer Science
                     20:  *  Carnegie Mellon University
                     21:  *  Pittsburgh PA 15213-3890
                     22:  * 
                     23:  * any improvements or extensions that they make and grant Carnegie Mellon
                     24:  * the rights to redistribute these changes.
                     25:  */
                     26: /*
                     27:  *     File:   mach/vm_statistics.h
                     28:  *     Author: Avadis Tevanian, Jr., Michael Wayne Young, David Golub
                     29:  *
                     30:  *     Virtual memory statistics structure.
                     31:  *
                     32:  */
                     33: 
                     34: #ifndef        _MACH_VM_STATISTICS_H_
                     35: #define        _MACH_VM_STATISTICS_H_
                     36: 
                     37: #include <mach/machine/vm_types.h>
                     38: 
                     39: struct vm_statistics {
                     40:        integer_t       pagesize;               /* page size in bytes */
                     41:        integer_t       free_count;             /* # of pages free */
                     42:        integer_t       active_count;           /* # of pages active */
                     43:        integer_t       inactive_count;         /* # of pages inactive */
                     44:        integer_t       wire_count;             /* # of pages wired down */
                     45:        integer_t       zero_fill_count;        /* # of zero fill pages */
                     46:        integer_t       reactivations;          /* # of pages reactivated */
                     47:        integer_t       pageins;                /* # of pageins */
                     48:        integer_t       pageouts;               /* # of pageouts */
                     49:        integer_t       faults;                 /* # of faults */
                     50:        integer_t       cow_faults;             /* # of copy-on-writes */
                     51:        integer_t       lookups;                /* object cache lookups */
                     52:        integer_t       hits;                   /* object cache hits */
                     53: };
                     54: 
                     55: typedef struct vm_statistics   *vm_statistics_t;
                     56: typedef struct vm_statistics   vm_statistics_data_t;
                     57: 
                     58: #ifdef MACH_KERNEL
                     59: extern vm_statistics_data_t    vm_stat;
                     60: #endif /* MACH_KERNEL */
                     61: 
                     62: /*
                     63:  *     Each machine dependent implementation is expected to
                     64:  *     keep certain statistics.  They may do this anyway they
                     65:  *     so choose, but are expected to return the statistics
                     66:  *     in the following structure.
                     67:  */
                     68: 
                     69: struct pmap_statistics {
                     70:        integer_t               resident_count; /* # of pages mapped (total)*/
                     71:        integer_t               wired_count;    /* # of pages wired */
                     72: };
                     73: 
                     74: typedef struct pmap_statistics *pmap_statistics_t;
                     75: #endif /* _MACH_VM_STATISTICS_H_ */

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