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Diffstat (limited to 'bin/ps/nlist.c')
| -rw-r--r-- | bin/ps/nlist.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/bin/ps/nlist.c b/bin/ps/nlist.c new file mode 100644 index 0000000..42471ea --- /dev/null +++ b/bin/ps/nlist.c @@ -0,0 +1,234 @@ +/* $NetBSD: nlist.c,v 1.27 2016/11/28 08:19:23 rin 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 1.27 2016/11/28 08:19:23 rin 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 log_ccpu; /* log of 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 */ + +/* XXX Hopefully reasonable default */ +#define MEMPAGES 0 +#ifndef FSCALE +#define FSCALE (1 << 8) +#endif +#define LOG_CCPU (-1.0 / 20.0) +#ifndef MAXSLP +#define MAXSLP 20 +#endif +#ifndef USPACE +#define USPACE (getpagesize()) +#endif + +#define kread(x, v) \ + kvm_read(kd, psnl[x].n_value, (char *)&v, sizeof v) != sizeof(v) + +void +donlist(void) +{ + fixpt_t xccpu; + + nlistread = 1; + + if (kvm_nlist(kd, psnl)) { + nlisterr(psnl); + eval = 1; + fscale = FSCALE; + mempages = MEMPAGES; + log_ccpu = LOG_CCPU; + maxslp = MAXSLP; + return; + } + + if (kread(X_FSCALE, fscale)) { + warnx("fscale: %s", kvm_geterr(kd)); + eval = 1; + fscale = FSCALE; + } + + if (kread(X_PHYSMEM, mempages)) { + warnx("avail_start: %s", kvm_geterr(kd)); + eval = 1; + mempages = MEMPAGES; + } + + if (kread(X_CCPU, xccpu)) { + warnx("ccpu: %s", kvm_geterr(kd)); + eval = 1; + log_ccpu = LOG_CCPU; + } else + log_ccpu = log((double)xccpu / fscale); + + if (kread(X_MAXSLP, maxslp)) { + warnx("maxslp: %s", kvm_geterr(kd)); + eval = 1; + maxslp = MAXSLP; + } +} + +void +donlist_sysctl(void) +{ + int mib[2]; + size_t size; + fixpt_t xccpu; + uint64_t memsize; + + nlistread = 1; + + mib[0] = CTL_KERN; + mib[1] = KERN_FSCALE; + size = sizeof(fscale); + if (sysctl(mib, 2, &fscale, &size, NULL, 0)) { + warn("fscale"); + eval = 1; + fscale = FSCALE; + } + + mib[0] = CTL_HW; + mib[1] = HW_PHYSMEM64; + size = sizeof(memsize); + if (sysctl(mib, 2, &memsize, &size, NULL, 0)) { + warn("avail_start"); + eval = 1; + mempages = MEMPAGES; + } else + mempages = memsize / getpagesize(); + + mib[0] = CTL_KERN; + mib[1] = KERN_CCPU; + size = sizeof(xccpu); + if (sysctl(mib, 2, &xccpu, &size, NULL, 0)) { + warn("ccpu"); + eval = 1; + log_ccpu = LOG_CCPU; + } else + log_ccpu = log((double)xccpu / fscale); + + mib[0] = CTL_VM; + mib[1] = VM_MAXSLP; + size = sizeof(maxslp); + if (sysctl(mib, 2, &maxslp, &size, NULL, 0)) { + warn("maxslp"); + eval = 1; + maxslp = MAXSLP; + } + + mib[0] = CTL_VM; + mib[1] = VM_USPACE; + size = sizeof(uspace); + if (sysctl(mib, 2, &uspace, &size, NULL, 0)) { + warn("uspace"); + eval = 1; + uspace = USPACE; + } +} + +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"); +} |