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      1 /*	$NetBSD: drvstats.h,v 1.6 2019/06/30 19:57:24 he Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1996 John M. Vinopal
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed for the NetBSD Project
     18  *      by John M. Vinopal.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/time.h>
     36 #include <sys/sched.h>
     37 #include <unistd.h>
     38 
     39 /* poseur disk entry to hold the information we're interested in. */
     40 struct _drive {
     41 	int		 *select;	/* Display stats for selected disks. */
     42 	char		 **name;	/* Disk names (sd0, wd1, etc). */
     43 	u_int64_t	 *rxfer;	/* # of read transfers. */
     44 	u_int64_t	 *wxfer;	/* # of write transfers. */
     45 	u_int64_t	 *seek;	/* # of seeks (currently unused). */
     46 	u_int64_t	 *rbytes;	/* # of bytes read. */
     47 	u_int64_t	 *wbytes;	/* # of bytes written. */
     48 	int		 *scale;	/* Sticky scale for bytes */
     49 	struct timeval	 *time;		/* Time spent in disk i/o. */
     50 	struct timeval	 *wait;		/* Time spent in queue waiting. */
     51 	struct timeval	 *busysum;	/* Time busy * queue length */
     52 	struct timeval	 *waitsum;	/* Time waiting * queue length */
     53 	struct timeval	 *timestamp;	/* Disk sample time */
     54 	u_int64_t	  tk_nin;	/* TTY Chars in. */
     55 	u_int64_t	  tk_nout;	/* TTY Chars out. */
     56 	u_int64_t	  cp_time[CPUSTATES];	/* System timer ticks. */
     57 	int	 	  cp_ncpu;		/* Number of cpu's */
     58 	double		  cp_etime;		/* Elapsed time */
     59 };
     60 
     61 extern struct _drive	cur;
     62 extern char		**dr_name;
     63 extern int		*drv_select;
     64 extern size_t		ndrive;
     65 
     66 int	drvinit(int);
     67 void	cpureadstats(void);
     68 void	drvreadstats(void);
     69 void	tkreadstats(void);
     70 void	cpuswap(void);
     71 void	drvswap(void);
     72 void	tkswap(void);
     73