/*      $NetBSD: drvstats.h,v 1.6 2019/06/30 19:57:24 he Exp $  */

/*
 * Copyright (c) 1996 John M. Vinopal
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed for the NetBSD Project
 *      by John M. Vinopal.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/time.h>
#include <sys/sched.h>
#include <unistd.h>

/* poseur disk entry to hold the information we're interested in. */
struct _drive {
        int              *select;       /* Display stats for selected disks. */
        char             **name;        /* Disk names (sd0, wd1, etc). */
        u_int64_t        *rxfer;        /* # of read transfers. */
        u_int64_t        *wxfer;        /* # of write transfers. */
        u_int64_t        *seek; /* # of seeks (currently unused). */
        u_int64_t        *rbytes;       /* # of bytes read. */
        u_int64_t        *wbytes;       /* # of bytes written. */
        int              *scale;        /* Sticky scale for bytes */
        struct timeval   *time;         /* Time spent in disk i/o. */
        struct timeval   *wait;         /* Time spent in queue waiting. */
        struct timeval   *busysum;      /* Time busy * queue length */
        struct timeval   *waitsum;      /* Time waiting * queue length */
        struct timeval   *timestamp;    /* Disk sample time */
        u_int64_t         tk_nin;       /* TTY Chars in. */
        u_int64_t         tk_nout;      /* TTY Chars out. */
        u_int64_t         cp_time[CPUSTATES];   /* System timer ticks. */
        int               cp_ncpu;              /* Number of cpu's */
        double            cp_etime;             /* Elapsed time */
};

extern struct _drive    cur;
extern char             **dr_name;
extern int              *drv_select;
extern size_t           ndrive;

int     drvinit(int);
void    cpureadstats(void);
void    drvreadstats(void);
void    tkreadstats(void);
void    cpuswap(void);
void    drvswap(void);
void    tkswap(void);