1 /* 2 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Joerg Sonnenberger <joerg@bec.de>. 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 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS 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 OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/lib/libkinfo/kinfo_sched.c,v 1.1 2004/12/22 11:01:49 joerg Exp $ 35 */ 36 37 #include <sys/param.h> 38 #include <sys/sysctl.h> 39 40 #include <kinfo.h> 41 42 int 43 kinfo_get_cpus(int *ncpus) 44 { 45 size_t len = sizeof(*ncpus); 46 47 return(sysctlbyname("hw.ncpu", ncpus, &len, NULL, 0)); 48 } 49 50 int 51 kinfo_get_sched_ccpu(int *ccpu) 52 { 53 size_t len = sizeof(*ccpu); 54 55 return(sysctlbyname("kern.ccpu", ccpu, &len, NULL, 0)); 56 } 57 58 int 59 kinfo_get_sched_cputime(struct kinfo_cputime *cputime) 60 { 61 size_t len = sizeof(*cputime); 62 63 return(sysctlbyname("kern.cp_time", cputime, &len, NULL, 0)); 64 } 65 66 int 67 kinfo_get_sched_hz(int *hz) 68 { 69 struct kinfo_clockinfo clockinfo; 70 size_t len = sizeof(clockinfo); 71 int retval; 72 73 retval = sysctlbyname("kern.clockrate", &clockinfo, &len, NULL, 0); 74 if (retval) 75 return(retval); 76 77 *hz = clockinfo.ci_hz; 78 return(0); 79 } 80 81 int 82 kinfo_get_sched_stathz(int *stathz) 83 { 84 struct kinfo_clockinfo clockinfo; 85 size_t len = sizeof(clockinfo); 86 int retval; 87 88 retval = sysctlbyname("kern.clockrate", &clockinfo, &len, NULL, 0); 89 if (retval) 90 return(retval); 91 92 *stathz = clockinfo.ci_stathz; 93 return(0); 94 } 95 96 int 97 kinfo_get_sched_profhz(int *profhz) 98 { 99 struct kinfo_clockinfo clockinfo; 100 size_t len = sizeof(clockinfo); 101 int retval; 102 103 retval = sysctlbyname("kern.clockrate", &clockinfo, &len, NULL, 0); 104 if (retval) 105 return(retval); 106 107 *profhz = clockinfo.ci_profhz; 108 return(0); 109 } 110