1 /* 2 * Copyright (c) 2004, 2005 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Hiten Pandya <hmp@dragonflybsd.org>. 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_pcpu.h,v 1.2 2005/04/27 16:16:30 hmp Exp $ 35 */ 36 37 /* 38 * Common code for managing per-cpu statistics counters. 39 */ 40 41 #ifndef _STRING_H_ 42 #include <string.h> 43 #endif 44 45 #define PCPU_STATISTICS_PROT(proto,type) \ 46 void proto ##_pcpu_statistics(type *percpu, type *total, int ncpu) 47 48 #define PCPU_STATISTICS_FUNC(proto,type,fldtype) \ 49 void \ 50 proto ##_pcpu_statistics(type *percpu, type *total, int ncpu) \ 51 { \ 52 int cpu, off, siz; \ 53 siz = sizeof(type); \ 54 \ 55 if (!percpu || !total) \ 56 return; \ 57 \ 58 bzero(total, siz); \ 59 if (ncpu == 1) { \ 60 *total = percpu[0]; \ 61 } else { \ 62 for (cpu = 0; cpu < ncpu; ++cpu) { \ 63 for (off = 0; off < siz; off += sizeof(fldtype)) {\ 64 *(fldtype *)((char *)(*(&total)) + off) += \ 65 *(fldtype *)((char *)&percpu[cpu] + off); \ 66 } \ 67 } \ 68 } \ 69 } 70