88 lines
3.0 KiB
C
88 lines
3.0 KiB
C
/* $NetBSD: loadavg.h,v 1.3 2002/07/16 00:40:51 itojun Exp $ */
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/*
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* Top users/processes display for Unix
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* Version 3
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*
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* Copyright (c) 1984, 1989, William LeFebvre, Rice University
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* Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR HIS EMPLOYER BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Top - a top users display for Berkeley Unix
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*
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* Defines required to access load average figures.
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*
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* This include file sets up everything we need to access the load average
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* values in the kernel in a machine independent way. First, it sets the
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* typedef "load_avg" to be either double or long (depending on what is
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* needed), then it defines these macros appropriately:
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*
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* loaddouble(la) - convert load_avg to double.
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* intload(i) - convert integer to load_avg.
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*/
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/*
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* We assume that if FSCALE is defined, then avenrun and ccpu are type long.
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* If your machine is an exception (mips, perhaps?) then make adjustments
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* here.
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*
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* Defined types: load_avg for load averages, pctcpu for cpu percentages.
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*/
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#if defined(mips) && !defined(NetBSD)
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# include <sys/fixpoint.h>
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# if defined(FBITS) && !defined(FSCALE)
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# define FSCALE (1 << FBITS) /* mips */
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# endif
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#endif
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#ifdef FSCALE
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# define FIXED_LOADAVG FSCALE
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# define FIXED_PCTCPU FSCALE
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#endif
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#ifdef ibm032
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# undef FIXED_LOADAVG
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# undef FIXED_PCTCPU
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# define FIXED_PCTCPU PCT_SCALE
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#endif
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#ifdef FIXED_PCTCPU
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typedef long pctcpu;
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# define pctdouble(p) ((double)(p) / FIXED_PCTCPU)
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#else
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typedef double pctcpu;
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# define pctdouble(p) (p)
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#endif
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#ifdef FIXED_LOADAVG
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typedef long load_avg;
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# define loaddouble(la) ((double)(la) / FIXED_LOADAVG)
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# define intload(i) ((int)((i) * FIXED_LOADAVG))
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#else
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typedef double load_avg;
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# define loaddouble(la) (la)
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# define intload(i) ((double)(i))
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#endif
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