/* $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 #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 #include #include #include #include #include #include #include #include #include #include #include #include #include #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"); }