include/sys/var.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 #ifndef _SYS_VAR_H
  31 #define _SYS_VAR_H
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /*
  38  * System Configuration Information
  39  */
  40 struct var {
  41         int     v_buf;          /* Nbr of I/O buffers.                  */
  42         int     v_call;         /* Nbr of callout (timeout) entries.    */
  43         int     v_proc;         /* Max processes system wide            */
  44         int     v_maxupttl;     /* Max user processes system wide       */
  45         int     v_nglobpris;    /* Nbr of global sched prios configured */
  46         int     v_maxsyspri;    /* Max global pri used by sys class.    */
  47         int     v_clist;        /* Nbr of clists allocated.             */
  48         int     v_maxup;        /* Max number of processes per user.    */
  49         int     v_hbuf;         /* Nbr of hash buffers to allocate.     */
  50         int     v_hmask;        /* Hash mask for buffers.               */
  51         int     v_pbuf;         /* Nbr of physical I/O buffers.         */
  52         int     v_sptmap;       /* Size of system virtual space         */
  53                                 /* allocation map.                      */
  54         int     v_maxpmem;      /* The maximum physical memory to use.  */
  55                                 /* If v_maxpmem == 0, then use all      */
  56                                 /* available physical memory.           */
  57                                 /* Otherwise, value is amount of mem to */
  58                                 /* use specified in pages.              */
  59         int     v_autoup;       /* The age a delayed-write buffer must  */
  60                                 /* be in seconds before bdflush will    */
  61                                 /* write it out.                        */
  62         int     v_bufhwm;       /* high-water-mark of buffer cache      */
  63                                 /* memory usage, in units of K Bytes    */
  64 };
  65
  66 extern struct var v;
  67
  68 #ifdef  __cplusplus
  69 }
  70 #endif
  71
  72 #endif  /* _SYS_VAR_H */