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File: [cvs.NetBSD.org] / src / bin / ps / nlist.c (download)

Revision 1.26, Mon Apr 28 20:22:51 2008 UTC (12 years, 6 months ago) by martin
Branch: MAIN
CVS Tags: yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-revivesa, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, pgoyette-localcount-base, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, netbsd-5-base, netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, netbsd-5, matt-premerge-20091211, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb4-mips64-k7-u2a-k9b, matt-mips64-premerge-20101231, matt-mips64-base2, localcount-20160914, khorben-n900, jym-xensuspend-nbase, jym-xensuspend-base, jym-xensuspend, hpcarm-cleanup-nbase, cherry-xenmp-base, cherry-xenmp, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2, agc-symver-base, agc-symver
Branch point for: pgoyette-localcount, matt-nb5-mips64
Changes since 1.25: +2 -9 lines

Remove clause 3 and 4 from TNF licenses

/*	$NetBSD: nlist.c,v 1.26 2008/04/28 20:22:51 martin Exp $	*/

/*
 * Copyright (c) 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Simon Burge.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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.
 */

/*
 * Copyright (c) 1990, 1993, 1994
 *	The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)nlist.c	8.4 (Berkeley) 4/2/94";
#else
__RCSID("$NetBSD: nlist.c,v 1.26 2008/04/28 20:22:51 martin Exp $");
#endif
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#include <sys/lwp.h>
#include <sys/proc.h>
#include <sys/resource.h>
#include <sys/sysctl.h>

#include <err.h>
#include <errno.h>
#include <kvm.h>
#include <math.h>
#include <nlist.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "ps.h"

struct	nlist psnl[] = {
	{ .n_name = "_fscale" },
#define	X_FSCALE	0
	{ .n_name = "_ccpu" },
#define	X_CCPU		1
	{ .n_name = "_physmem" },
#define	X_PHYSMEM	2
	{ .n_name = "_maxslp" },
#define	X_MAXSLP	3
	{ .n_name = NULL }
};

double	ccpu;				/* kernel _ccpu variable */
int	nlistread;			/* if nlist already read. */
int	mempages;			/* number of pages of phys. memory */
int	fscale;				/* kernel _fscale variable */
int	maxslp;				/* kernel _maxslp variable */
int	uspace;				/* kernel USPACE value */

#define	kread(x, v) \
	kvm_read(kd, psnl[x].n_value, (char *)&v, sizeof v) != sizeof(v)

int
donlist(void)
{
	int rval;
	fixpt_t xccpu;

	rval = 0;
	nlistread = 1;
	if (kvm_nlist(kd, psnl)) {
		nlisterr(psnl);
		eval = 1;
		return (1);
	}
	if (kread(X_FSCALE, fscale)) {
		warnx("fscale: %s", kvm_geterr(kd));
		eval = rval = 1;
	}
	if (kread(X_PHYSMEM, mempages)) {
		warnx("avail_start: %s", kvm_geterr(kd));
		eval = rval = 1;
	}
	if (kread(X_CCPU, xccpu)) {
		warnx("ccpu: %s", kvm_geterr(kd));
		eval = rval = 1;
	}
	if (kread(X_MAXSLP, maxslp)) {
		warnx("maxslp: %s", kvm_geterr(kd));
		eval = rval = 1;
	}
	ccpu = (double)xccpu / fscale;
	return (rval);
}

int
donlist_sysctl(void)
{
	int mib[2];
	size_t size;
	fixpt_t xccpu;
	uint64_t memsize;

	nlistread = 1;
	mib[0] = CTL_HW;
	mib[1] = HW_PHYSMEM64;
	size = sizeof(memsize);
	if (sysctl(mib, 2, &memsize, &size, NULL, 0) == 0)
		mempages = memsize / getpagesize();
	else
		mempages = 0;

	mib[0] = CTL_KERN;
	mib[1] = KERN_FSCALE;
	size = sizeof(fscale);
	if (sysctl(mib, 2, &fscale, &size, NULL, 0) == -1)
		fscale = (1 << 8);	/* XXX Hopefully reasonable default */

	mib[0] = CTL_KERN;
	mib[1] = KERN_CCPU;
	size = sizeof(xccpu);
	if (sysctl(mib, 2, &xccpu, &size, NULL, 0) == -1)
		ccpu = exp(-1.0 / 20.0); /* XXX Hopefully reasonable default */
	else
		ccpu = (double)xccpu / fscale;

	mib[0] = CTL_VM;
	mib[1] = VM_MAXSLP;
	size = sizeof(maxslp);
	if (sysctl(mib, 2, &maxslp, &size, NULL, 0) == -1)
#ifdef MAXSLP
		maxslp = MAXSLP;
#else
		maxslp = 20;		/* XXX Hopefully reasonable default */
#endif

	mib[0] = CTL_VM;
	mib[1] = VM_USPACE;
	size = sizeof(uspace);
	if (sysctl(mib, 2, &uspace, &size, NULL, 0) == -1)
#ifdef USPACE
		uspace = USPACE;
#else
		uspace = getpagesize();	/* XXX Hopefully reasonable default */
#endif

	return 0;
}

void
nlisterr(struct nlist nl[])
{
	int i;

	(void)fprintf(stderr, "ps: nlist: can't find following symbols:");
	for (i = 0; nl[i].n_name != NULL; i++)
		if (nl[i].n_value == 0)
			(void)fprintf(stderr, " %s", nl[i].n_name);
	(void)fprintf(stderr, "\n");
}