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/* $OpenBSD: loadavg.h,v 1.3 2002/07/15 17:20:36 deraadt Exp $ */
/*
* Top users/processes display for Unix
* Version 3
*
* Copyright (c) 1984, 1989, William LeFebvre, Rice University
* Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University
*
* 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 AUTHOR ``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 AUTHOR OR HIS EMPLOYER 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.
*/
/*
* Top - a top users display for Berkeley Unix
*
* Defines required to access load average figures.
*
* This include file sets up everything we need to access the load average
* values in the kernel in a machine independent way. First, it sets the
* typedef "load_avg" to be either double or long (depending on what is
* needed), then it defines these macros appropriately:
*
* loaddouble(la) - convert load_avg to double.
* intload(i) - convert integer to load_avg.
*/
/*
* We assume that if FSCALE is defined, then avenrun and ccpu are type long.
* If your machine is an exception (mips, perhaps?) then make adjustments
* here.
*
* Defined types: load_avg for load averages, pctcpu for cpu percentages.
*/
#if defined(mips) && !defined(__OpenBSD__)
# include <sys/fixpoint.h>
# if defined(FBITS) && !defined(FSCALE)
# define FSCALE (1 << FBITS) /* mips */
# endif
#endif
#ifdef FSCALE
# define FIXED_LOADAVG FSCALE
# define FIXED_PCTCPU FSCALE
#endif
#ifdef ibm032
# undef FIXED_LOADAVG
# undef FIXED_PCTCPU
# define FIXED_PCTCPU PCT_SCALE
#endif
#ifdef FIXED_PCTCPU
typedef long pctcpu;
# define pctdouble(p) ((double)(p) / FIXED_PCTCPU)
#else
typedef double pctcpu;
# define pctdouble(p) (p)
#endif
#ifdef FIXED_LOADAVG
typedef long load_avg;
# define loaddouble(la) ((double)(la) / FIXED_LOADAVG)
# define intload(i) ((int)((i) * FIXED_LOADAVG))
#else
typedef double load_avg;
# define loaddouble(la) (la)
# define intload(i) ((double)(i))
#endif
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