GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/systat/iostat.c Lines: 0 81 0.0 %
Date: 2016-12-06 Branches: 0 18 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: iostat.c,v 1.45 2015/01/16 00:03:37 deraadt Exp $	*/
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/*	$NetBSD: iostat.c,v 1.5 1996/05/10 23:16:35 thorpej Exp $	*/
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/*
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 * Copyright (c) 1980, 1992, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <sys/signal.h>
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#include <sys/sched.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <string.h>
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#include <stdlib.h>
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#include <paths.h>
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#include "systat.h"
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#include "dkstats.h"
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extern struct _disk	cur, last;
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struct bcachestats	bclast, bccur;
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static double etime;
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void showtotal(void);
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void showdrive(int);
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void print_io(void);
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int read_io(void);
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int select_io(void);
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void showbcache(void);
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#define ATIME(x,y) ((double)x[y].tv_sec + \
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        ((double)x[y].tv_usec / (double)1000000))
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field_def fields_io[] = {
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	{"DEVICE", 8, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0},
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	{"READ", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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	{"WRITE", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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	{"RTPS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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	{"WTPS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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	{"SEC", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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	{"", 8, 19, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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	{"STATS", 12, 15, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}
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};
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#define FLD_IO_DEVICE	FIELD_ADDR(fields_io,0)
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#define FLD_IO_READ	FIELD_ADDR(fields_io,1)
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#define FLD_IO_WRITE	FIELD_ADDR(fields_io,2)
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#define FLD_IO_RTPS	FIELD_ADDR(fields_io,3)
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#define FLD_IO_WTPS	FIELD_ADDR(fields_io,4)
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#define FLD_IO_SEC	FIELD_ADDR(fields_io,5)
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/* This is a hack that stuffs bcache statistics to the last two columns! */
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#define FLD_IO_SVAL	FIELD_ADDR(fields_io,6)
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#define FLD_IO_SSTR	FIELD_ADDR(fields_io,7)
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/* Define views */
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field_def *view_io_0[] = {
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	FLD_IO_DEVICE, FLD_IO_READ, FLD_IO_WRITE, FLD_IO_RTPS,
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	FLD_IO_WTPS, FLD_IO_SEC, FLD_IO_SVAL, FLD_IO_SSTR, NULL
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};
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/* Define view managers */
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struct view_manager iostat_mgr = {
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	"Iostat", select_io, read_io, NULL, print_header,
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	print_io, keyboard_callback, NULL, NULL
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};
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field_view views_io[] = {
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	{view_io_0, "iostat", '2', &iostat_mgr},
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	{NULL, NULL, 0, NULL}
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};
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int
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select_io(void)
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{
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	num_disp = cur.dk_ndrive + 1;
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	return (0);
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}
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int
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read_io(void)
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{
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	int mib[3];
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	size_t size;
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	dkreadstats();
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	dkswap();
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	num_disp = cur.dk_ndrive + 1;
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	bclast = bccur;
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	mib[0] = CTL_VFS;
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	mib[1] = VFS_GENERIC;
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	mib[2] = VFS_BCACHESTAT;
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	size = sizeof(bccur);
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	if (sysctl(mib, 3, &bccur, &size, NULL, 0) < 0)
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		error("cannot get vfs.bcachestat");
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	if (bclast.numbufs == 0)
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		bclast = bccur;
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	return 0;
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}
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void
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print_io(void)
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{
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	int n, count = 0;
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	int curr;
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	etime = naptime;
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	/* XXX engine internals: save and restore curr_line for bcache */
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	curr = curr_line;
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	for (n = dispstart; n < num_disp - 1; n++) {
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		showdrive(n);
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		count++;
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		if (maxprint > 0 && count >= maxprint)
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			break;
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	}
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	if (maxprint == 0 || count < maxprint)
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		showtotal();
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	curr_line = curr;
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	showbcache();
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}
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int
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initiostat(void)
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{
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	field_view *v;
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	dkinit(1);
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	dkreadstats();
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	bzero(&bccur, sizeof(bccur));
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	for (v = views_io; v->name != NULL; v++)
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		add_view(v);
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	return(1);
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}
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void
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showtotal(void)
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{
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	double rsum, wsum, rtsum, wtsum, mssum;
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	int dn;
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	rsum = wsum = rtsum = wtsum = mssum = 0.0;
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	for (dn = 0; dn < cur.dk_ndrive; dn++) {
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		rsum += cur.dk_rbytes[dn] / etime;
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		wsum += cur.dk_wbytes[dn] / etime;
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		rtsum += cur.dk_rxfer[dn] / etime;
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		wtsum += cur.dk_wxfer[dn] / etime;
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		mssum += ATIME(cur.dk_time, dn) / etime;
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	}
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	print_fld_str(FLD_IO_DEVICE, "Totals");
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	print_fld_size(FLD_IO_READ, rsum);
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	print_fld_size(FLD_IO_WRITE, wsum);
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	print_fld_size(FLD_IO_RTPS, rtsum);
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	print_fld_size(FLD_IO_WTPS, wtsum);
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	print_fld_float(FLD_IO_SEC, mssum, 1);
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	end_line();
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}
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void
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showdrive(int dn)
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{
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	print_fld_str(FLD_IO_DEVICE, cur.dk_name[dn]);
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	print_fld_size(FLD_IO_READ, cur.dk_rbytes[dn]/etime);
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	print_fld_size(FLD_IO_WRITE, cur.dk_wbytes[dn]/ etime);
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	print_fld_size(FLD_IO_RTPS, cur.dk_rxfer[dn] / etime);
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	print_fld_size(FLD_IO_WTPS, cur.dk_wxfer[dn] / etime);
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	print_fld_float(FLD_IO_SEC, ATIME(cur.dk_time, dn) / etime, 1);
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	end_line();
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}
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void
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showbcache(void)
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{
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	print_fld_str(FLD_IO_SSTR, "total pages");
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	print_fld_ssize(FLD_IO_SVAL, bccur.numbufpages);
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	end_line();
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	print_fld_str(FLD_IO_SSTR, "dirty pages");
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	print_fld_ssize(FLD_IO_SVAL, bccur.numdirtypages);
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	end_line();
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	print_fld_str(FLD_IO_SSTR, "delwri bufs");
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	print_fld_ssize(FLD_IO_SVAL, bccur.delwribufs);
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	end_line();
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	print_fld_str(FLD_IO_SSTR, "busymap bufs");
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	print_fld_ssize(FLD_IO_SVAL, bccur.busymapped);
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	end_line();
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	print_fld_str(FLD_IO_SSTR, "avail kvaslots");
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	print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots_avail);
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	end_line();
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	print_fld_str(FLD_IO_SSTR, "kvaslots");
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	print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots);
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	end_line();
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	print_fld_str(FLD_IO_SSTR, "pending writes");
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	print_fld_ssize(FLD_IO_SVAL, bccur.pendingwrites);
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	end_line();
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	print_fld_str(FLD_IO_SSTR, "pending reads");
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	print_fld_ssize(FLD_IO_SVAL, bccur.pendingreads);
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	end_line();
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	print_fld_str(FLD_IO_SSTR, "cache hits");
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	print_fld_ssize(FLD_IO_SVAL, bccur.cachehits - bclast.cachehits);
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	end_line();
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}