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Annotation of Net2/vm/vm_statistics.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Copyright (c) 1991 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * The Mach Operating System project at Carnegie-Mellon University.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. All advertising materials mentioning features or use of this software
        !            17:  *    must display the following acknowledgement:
        !            18:  *     This product includes software developed by the University of
        !            19:  *     California, Berkeley and its contributors.
        !            20:  * 4. Neither the name of the University nor the names of its contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *     @(#)vm_statistics.h     7.2 (Berkeley) 4/21/91
        !            37:  *
        !            38:  *
        !            39:  * Copyright (c) 1987, 1990 Carnegie-Mellon University.
        !            40:  * All rights reserved.
        !            41:  *
        !            42:  * Authors: Avadis Tevanian, Jr., Michael Wayne Young, David Golub
        !            43:  * 
        !            44:  * Permission to use, copy, modify and distribute this software and
        !            45:  * its documentation is hereby granted, provided that both the copyright
        !            46:  * notice and this permission notice appear in all copies of the
        !            47:  * software, derivative works or modified versions, and any portions
        !            48:  * thereof, and that both notices appear in supporting documentation.
        !            49:  * 
        !            50:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
        !            51:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
        !            52:  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            53:  * 
        !            54:  * Carnegie Mellon requests users of this software to return to
        !            55:  *
        !            56:  *  Software Distribution Coordinator  or  [email protected]
        !            57:  *  School of Computer Science
        !            58:  *  Carnegie Mellon University
        !            59:  *  Pittsburgh PA 15213-3890
        !            60:  *
        !            61:  * any improvements or extensions that they make and grant Carnegie the
        !            62:  * rights to redistribute these changes.
        !            63:  */
        !            64: 
        !            65: /*
        !            66:  *     Virtual memory statistics structure.
        !            67:  */
        !            68: 
        !            69: #ifndef        _VM_STATISTICS_
        !            70: #define        _VM_STATISTICS_
        !            71: 
        !            72: struct vm_statistics {
        !            73:        long    pagesize;               /* page size in bytes */
        !            74:        long    free_count;             /* # of pages free */
        !            75:        long    active_count;           /* # of pages active */
        !            76:        long    inactive_count;         /* # of pages inactive */
        !            77:        long    wire_count;             /* # of pages wired down */
        !            78:        long    zero_fill_count;        /* # of zero fill pages */
        !            79:        long    reactivations;          /* # of pages reactivated */
        !            80:        long    pageins;                /* # of pageins */
        !            81:        long    pageouts;               /* # of pageouts */
        !            82:        long    faults;                 /* # of faults */
        !            83:        long    cow_faults;             /* # of copy-on-writes */
        !            84:        long    lookups;                /* object cache lookups */
        !            85:        long    hits;                   /* object cache hits */
        !            86: };
        !            87: 
        !            88: typedef struct vm_statistics   *vm_statistics_t;
        !            89: typedef struct vm_statistics   vm_statistics_data_t;
        !            90: 
        !            91: #ifdef KERNEL
        !            92: vm_statistics_data_t   vm_stat;
        !            93: #endif KERNEL
        !            94: 
        !            95: /*
        !            96:  *     Each machine dependent implementation is expected to
        !            97:  *     keep certain statistics.  They may do this anyway they
        !            98:  *     so choose, but are expected to return the statistics
        !            99:  *     in the following structure.
        !           100:  */
        !           101: 
        !           102: struct pmap_statistics {
        !           103:        long            resident_count; /* # of pages mapped (total)*/
        !           104:        long            wired_count;    /* # of pages wired */
        !           105: };
        !           106: 
        !           107: typedef struct pmap_statistics *pmap_statistics_t;
        !           108: #endif _VM_STATISTICS_

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